remove acorn compiled source
This commit is contained in:
Sebastian McKenzie
parent
3c8f3cb521
commit
ca79fff0c4
@ -1,32 +0,0 @@
|
||||
List of Acorn contributors. Updated before every release.
|
||||
|
||||
Alistair Braidwood
|
||||
Aparajita Fishman
|
||||
Arian Stolwijk
|
||||
Artem Govorov
|
||||
Brandon Mills
|
||||
Charles Hughes
|
||||
Conrad Irwin
|
||||
David Bonnet
|
||||
impinball
|
||||
Ingvar Stepanyan
|
||||
Jiaxing Wang
|
||||
Johannes Herr
|
||||
Jürg Lehni
|
||||
keeyipchan
|
||||
krator
|
||||
Marijn Haverbeke
|
||||
Martin Carlberg
|
||||
Mathias Bynens
|
||||
Mathieu 'p01' Henri
|
||||
Max Schaefer
|
||||
Mihai Bazon
|
||||
Mike Rennie
|
||||
Oskar Schöldström
|
||||
Paul Harper
|
||||
Peter Rust
|
||||
PlNG
|
||||
r-e-d
|
||||
Rich Harris
|
||||
Sebastian McKenzie
|
||||
zsjforcn
|
||||
@ -1,19 +0,0 @@
|
||||
Copyright (C) 2012-2014 by various contributors (see AUTHORS)
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in
|
||||
all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
THE SOFTWARE.
|
||||
@ -1,44 +0,0 @@
|
||||
{
|
||||
"name": "acorn",
|
||||
"description": "ECMAScript parser",
|
||||
"homepage": "https://github.com/marijnh/acorn",
|
||||
"main": "src/index.js",
|
||||
"version": "1.0.0",
|
||||
"engines": {
|
||||
"node": ">=0.4.0"
|
||||
},
|
||||
"maintainers": [
|
||||
{
|
||||
"name": "Marijn Haverbeke",
|
||||
"email": "marijnh@gmail.com",
|
||||
"web": "http://marijnhaverbeke.nl"
|
||||
},
|
||||
{
|
||||
"name": "Ingvar Stepanyan",
|
||||
"email": "me@rreverser.com",
|
||||
"web": "http://rreverser.com/"
|
||||
}
|
||||
],
|
||||
"repository": {
|
||||
"type": "git",
|
||||
"url": "https://github.com/marijnh/acorn.git"
|
||||
},
|
||||
"licenses": [
|
||||
{
|
||||
"type": "MIT",
|
||||
"url": "https://raw.githubusercontent.com/marijnh/acorn/master/LICENSE"
|
||||
}
|
||||
],
|
||||
"scripts": {
|
||||
"test": "node test/run.js",
|
||||
"prepublish": "node bin/prepublish.sh"
|
||||
},
|
||||
"bin": {
|
||||
"acorn": "./bin/acorn"
|
||||
},
|
||||
"devDependencies": {
|
||||
"babelify": "^5.0.4",
|
||||
"browserify": "^9.0.3",
|
||||
"unicode-7.0.0": "~0.1.5"
|
||||
}
|
||||
}
|
||||
@ -1,818 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
var acorn = require("..");
|
||||
|
||||
var pp = acorn.Parser.prototype;
|
||||
var tt = acorn.tokTypes;
|
||||
|
||||
pp.isRelational = function (op) {
|
||||
return this.type === tt.relational && this.value === op;
|
||||
};
|
||||
|
||||
pp.expectRelational = function (op) {
|
||||
if (this.isRelational(op)) {
|
||||
this.next();
|
||||
} else {
|
||||
this.unexpected();
|
||||
}
|
||||
};
|
||||
|
||||
pp.flow_parseDeclareClass = function (node) {
|
||||
this.next();
|
||||
this.flow_parseInterfaceish(node, true);
|
||||
return this.finishNode(node, "DeclareClass");
|
||||
};
|
||||
|
||||
pp.flow_parseDeclareFunction = function (node) {
|
||||
this.next();
|
||||
|
||||
var id = node.id = this.parseIdent();
|
||||
|
||||
var typeNode = this.startNode();
|
||||
var typeContainer = this.startNode();
|
||||
|
||||
if (this.isRelational("<")) {
|
||||
typeNode.typeParameters = this.flow_parseTypeParameterDeclaration();
|
||||
} else {
|
||||
typeNode.typeParameters = null;
|
||||
}
|
||||
|
||||
this.expect(tt.parenL);
|
||||
var tmp = this.flow_parseFunctionTypeParams();
|
||||
typeNode.params = tmp.params;
|
||||
typeNode.rest = tmp.rest;
|
||||
this.expect(tt.parenR);
|
||||
|
||||
this.expect(tt.colon);
|
||||
typeNode.returnType = this.flow_parseType();
|
||||
|
||||
typeContainer.typeAnnotation = this.finishNode(typeNode, "FunctionTypeAnnotation");
|
||||
id.typeAnnotation = this.finishNode(typeContainer, "TypeAnnotation");
|
||||
|
||||
this.finishNode(id, id.type);
|
||||
|
||||
this.semicolon();
|
||||
|
||||
return this.finishNode(node, "DeclareFunction");
|
||||
};
|
||||
|
||||
pp.flow_parseDeclare = function (node) {
|
||||
if (this.type === tt._class) {
|
||||
return this.flow_parseDeclareClass(node);
|
||||
} else if (this.type === tt._function) {
|
||||
return this.flow_parseDeclareFunction(node);
|
||||
} else if (this.type === tt._var) {
|
||||
return this.flow_parseDeclareVariable(node);
|
||||
} else if (this.isContextual("module")) {
|
||||
return this.flow_parseDeclareModule(node);
|
||||
} else {
|
||||
this.unexpected();
|
||||
}
|
||||
};
|
||||
|
||||
pp.flow_parseDeclareVariable = function (node) {
|
||||
this.next();
|
||||
node.id = this.flow_parseTypeAnnotatableIdentifier();
|
||||
this.semicolon();
|
||||
return this.finishNode(node, "DeclareVariable");
|
||||
};
|
||||
|
||||
pp.flow_parseDeclareModule = function (node) {
|
||||
this.next();
|
||||
|
||||
if (this.type === tt.string) {
|
||||
node.id = this.parseExprAtom();
|
||||
} else {
|
||||
node.id = this.parseIdent();
|
||||
}
|
||||
|
||||
var bodyNode = node.body = this.startNode();
|
||||
var body = bodyNode.body = [];
|
||||
this.expect(tt.braceL);
|
||||
while (this.type !== tt.braceR) {
|
||||
var node2 = this.startNode();
|
||||
|
||||
// todo: declare check
|
||||
this.next();
|
||||
|
||||
body.push(this.flow_parseDeclare(node2));
|
||||
}
|
||||
this.expect(tt.braceR);
|
||||
|
||||
this.finishNode(bodyNode, "BlockStatement");
|
||||
return this.finishNode(node, "DeclareModule");
|
||||
};
|
||||
|
||||
// Interfaces
|
||||
|
||||
pp.flow_parseInterfaceish = function (node, allowStatic) {
|
||||
node.id = this.parseIdent();
|
||||
|
||||
if (this.isRelational("<")) {
|
||||
node.typeParameters = this.flow_parseTypeParameterDeclaration();
|
||||
} else {
|
||||
node.typeParameters = null;
|
||||
}
|
||||
|
||||
node["extends"] = [];
|
||||
|
||||
if (this.eat(tt._extends)) {
|
||||
do {
|
||||
node["extends"].push(this.flow_parseInterfaceExtends());
|
||||
} while (this.eat(tt.comma));
|
||||
}
|
||||
|
||||
node.body = this.flow_parseObjectType(allowStatic);
|
||||
};
|
||||
|
||||
pp.flow_parseInterfaceExtends = function () {
|
||||
var node = this.startNode();
|
||||
|
||||
node.id = this.parseIdent();
|
||||
if (this.isRelational("<")) {
|
||||
node.typeParameters = this.flow_parseTypeParameterInstantiation();
|
||||
} else {
|
||||
node.typeParameters = null;
|
||||
}
|
||||
|
||||
return this.finishNode(node, "InterfaceExtends");
|
||||
};
|
||||
|
||||
pp.flow_parseInterface = function (node) {
|
||||
this.flow_parseInterfaceish(node, false);
|
||||
return this.finishNode(node, "InterfaceDeclaration");
|
||||
};
|
||||
|
||||
// Type aliases
|
||||
|
||||
pp.flow_parseTypeAlias = function (node) {
|
||||
node.id = this.parseIdent();
|
||||
|
||||
if (this.isRelational("<")) {
|
||||
node.typeParameters = this.flow_parseTypeParameterDeclaration();
|
||||
} else {
|
||||
node.typeParameters = null;
|
||||
}
|
||||
|
||||
this.expect(tt.eq);
|
||||
|
||||
node.right = this.flow_parseType();
|
||||
|
||||
this.semicolon();
|
||||
|
||||
return this.finishNode(node, "TypeAlias");
|
||||
};
|
||||
|
||||
// Type annotations
|
||||
|
||||
pp.flow_parseTypeParameterDeclaration = function () {
|
||||
var node = this.startNode();
|
||||
node.params = [];
|
||||
|
||||
this.expectRelational("<");
|
||||
while (!this.isRelational(">")) {
|
||||
node.params.push(this.flow_parseTypeAnnotatableIdentifier());
|
||||
if (!this.isRelational(">")) {
|
||||
this.expect(tt.comma);
|
||||
}
|
||||
}
|
||||
this.expectRelational(">");
|
||||
|
||||
return this.finishNode(node, "TypeParameterDeclaration");
|
||||
};
|
||||
|
||||
pp.flow_parseTypeParameterInstantiation = function () {
|
||||
var node = this.startNode(),
|
||||
oldInType = this.inType;
|
||||
node.params = [];
|
||||
|
||||
this.inType = true;
|
||||
|
||||
this.expectRelational("<");
|
||||
while (!this.isRelational(">")) {
|
||||
node.params.push(this.flow_parseType());
|
||||
if (!this.isRelational(">")) {
|
||||
this.expect(tt.comma);
|
||||
}
|
||||
}
|
||||
this.expectRelational(">");
|
||||
|
||||
this.inType = oldInType;
|
||||
|
||||
return this.finishNode(node, "TypeParameterInstantiation");
|
||||
};
|
||||
|
||||
pp.flow_parseObjectPropertyKey = function () {
|
||||
return this.type === tt.num || this.type === tt.string ? this.parseExprAtom() : this.parseIdent(true);
|
||||
};
|
||||
|
||||
pp.flow_parseObjectTypeIndexer = function (node, isStatic) {
|
||||
node["static"] = isStatic;
|
||||
|
||||
this.expect(tt.bracketL);
|
||||
node.id = this.flow_parseObjectPropertyKey();
|
||||
this.expect(tt.colon);
|
||||
node.key = this.flow_parseType();
|
||||
this.expect(tt.bracketR);
|
||||
this.expect(tt.colon);
|
||||
node.value = this.flow_parseType();
|
||||
|
||||
return this.finishNode(node, "ObjectTypeIndexer");
|
||||
};
|
||||
|
||||
pp.flow_parseObjectTypeMethodish = function (node) {
|
||||
node.params = [];
|
||||
node.rest = null;
|
||||
node.typeParameters = null;
|
||||
|
||||
if (this.isRelational("<")) {
|
||||
node.typeParameters = this.flow_parseTypeParameterDeclaration();
|
||||
}
|
||||
|
||||
this.expect(tt.parenL);
|
||||
while (this.type === tt.name) {
|
||||
node.params.push(this.flow_parseFunctionTypeParam());
|
||||
if (this.type !== tt.parenR) {
|
||||
this.expect(tt.comma);
|
||||
}
|
||||
}
|
||||
|
||||
if (this.eat(tt.ellipsis)) {
|
||||
node.rest = this.flow_parseFunctionTypeParam();
|
||||
}
|
||||
this.expect(tt.parenR);
|
||||
this.expect(tt.colon);
|
||||
node.returnType = this.flow_parseType();
|
||||
|
||||
return this.finishNode(node, "FunctionTypeAnnotation");
|
||||
};
|
||||
|
||||
pp.flow_parseObjectTypeMethod = function (start, isStatic, key) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.value = this.flow_parseObjectTypeMethodish(this.startNodeAt(start));
|
||||
node["static"] = isStatic;
|
||||
node.key = key;
|
||||
node.optional = false;
|
||||
return this.finishNode(node, "ObjectTypeProperty");
|
||||
};
|
||||
|
||||
pp.flow_parseObjectTypeCallProperty = function (node, isStatic) {
|
||||
var valueNode = this.startNode();
|
||||
node["static"] = isStatic;
|
||||
node.value = this.flow_parseObjectTypeMethodish(valueNode);
|
||||
return this.finishNode(node, "ObjectTypeCallProperty");
|
||||
};
|
||||
|
||||
pp.flow_parseObjectType = function (allowStatic) {
|
||||
var nodeStart = this.startNode();
|
||||
var node;
|
||||
var optional = false;
|
||||
var property;
|
||||
var propertyKey;
|
||||
var propertyTypeAnnotation;
|
||||
var token;
|
||||
var isStatic;
|
||||
|
||||
nodeStart.callProperties = [];
|
||||
nodeStart.properties = [];
|
||||
nodeStart.indexers = [];
|
||||
|
||||
this.expect(tt.braceL);
|
||||
|
||||
while (this.type !== tt.braceR) {
|
||||
var start = this.markPosition();
|
||||
node = this.startNode();
|
||||
if (allowStatic && this.isContextual("static")) {
|
||||
this.next();
|
||||
isStatic = true;
|
||||
}
|
||||
|
||||
if (this.type === tt.bracketL) {
|
||||
nodeStart.indexers.push(this.flow_parseObjectTypeIndexer(node, isStatic));
|
||||
} else if (this.type === tt.parenL || this.isRelational("<")) {
|
||||
nodeStart.callProperties.push(this.flow_parseObjectTypeCallProperty(node, allowStatic));
|
||||
} else {
|
||||
if (isStatic && this.type === tt.colon) {
|
||||
propertyKey = this.parseIdent();
|
||||
} else {
|
||||
propertyKey = this.flow_parseObjectPropertyKey();
|
||||
}
|
||||
if (this.isRelational("<") || this.type === tt.parenL) {
|
||||
// This is a method property
|
||||
nodeStart.properties.push(this.flow_parseObjectTypeMethod(start, isStatic, propertyKey));
|
||||
} else {
|
||||
if (this.eat(tt.question)) {
|
||||
optional = true;
|
||||
}
|
||||
this.expect(tt.colon);
|
||||
node.key = propertyKey;
|
||||
node.value = this.flow_parseType();
|
||||
node.optional = optional;
|
||||
node["static"] = isStatic;
|
||||
nodeStart.properties.push(this.finishNode(node, "ObjectTypeProperty"));
|
||||
}
|
||||
}
|
||||
|
||||
if (!this.eat(tt.semi) && this.type !== tt.braceR) {
|
||||
this.unexpected();
|
||||
}
|
||||
}
|
||||
|
||||
this.expect(tt.braceR);
|
||||
|
||||
return this.finishNode(nodeStart, "ObjectTypeAnnotation");
|
||||
};
|
||||
|
||||
pp.flow_parseGenericType = function (start, id) {
|
||||
var node = this.startNodeAt(start);
|
||||
|
||||
node.typeParameters = null;
|
||||
node.id = id;
|
||||
|
||||
while (this.eat(tt.dot)) {
|
||||
var node2 = this.startNodeAt(start);
|
||||
node2.qualification = node.id;
|
||||
node2.id = this.parseIdent();
|
||||
node.id = this.finishNode(node2, "QualifiedTypeIdentifier");
|
||||
}
|
||||
|
||||
if (this.isRelational("<")) {
|
||||
node.typeParameters = this.flow_parseTypeParameterInstantiation();
|
||||
}
|
||||
|
||||
return this.finishNode(node, "GenericTypeAnnotation");
|
||||
};
|
||||
|
||||
pp.flow_parseVoidType = function () {
|
||||
var node = this.startNode();
|
||||
this.expect(tt._void);
|
||||
return this.finishNode(node, "VoidTypeAnnotation");
|
||||
};
|
||||
|
||||
pp.flow_parseTypeofType = function () {
|
||||
var node = this.startNode();
|
||||
this.expect(tt._typeof);
|
||||
node.argument = this.flow_parsePrimaryType();
|
||||
return this.finishNode(node, "TypeofTypeAnnotation");
|
||||
};
|
||||
|
||||
pp.flow_parseTupleType = function () {
|
||||
var node = this.startNode();
|
||||
node.types = [];
|
||||
this.expect(tt.bracketL);
|
||||
// We allow trailing commas
|
||||
while (this.pos < this.input.length && this.type !== tt.bracketR) {
|
||||
node.types.push(this.flow_parseType());
|
||||
if (this.type === tt.bracketR) break;
|
||||
this.expect(tt.comma);
|
||||
}
|
||||
this.expect(tt.bracketR);
|
||||
return this.finishNode(node, "TupleTypeAnnotation");
|
||||
};
|
||||
|
||||
pp.flow_parseFunctionTypeParam = function () {
|
||||
var optional = false;
|
||||
var node = this.startNode();
|
||||
node.name = this.parseIdent();
|
||||
if (this.eat(tt.question)) {
|
||||
optional = true;
|
||||
}
|
||||
this.expect(tt.colon);
|
||||
node.optional = optional;
|
||||
node.typeAnnotation = this.flow_parseType();
|
||||
return this.finishNode(node, "FunctionTypeParam");
|
||||
};
|
||||
|
||||
pp.flow_parseFunctionTypeParams = function () {
|
||||
var ret = { params: [], rest: null };
|
||||
while (this.type === tt.name) {
|
||||
ret.params.push(this.flow_parseFunctionTypeParam());
|
||||
if (this.type !== tt.parenR) {
|
||||
this.expect(tt.comma);
|
||||
}
|
||||
}
|
||||
if (this.eat(tt.ellipsis)) {
|
||||
ret.rest = this.flow_parseFunctionTypeParam();
|
||||
}
|
||||
return ret;
|
||||
};
|
||||
|
||||
pp.flow_identToTypeAnnotation = function (start, node, id) {
|
||||
switch (id.name) {
|
||||
case "any":
|
||||
return this.finishNode(node, "AnyTypeAnnotation");
|
||||
|
||||
case "bool":
|
||||
case "boolean":
|
||||
return this.finishNode(node, "BooleanTypeAnnotation");
|
||||
|
||||
case "number":
|
||||
return this.finishNode(node, "NumberTypeAnnotation");
|
||||
|
||||
case "string":
|
||||
return this.finishNode(node, "StringTypeAnnotation");
|
||||
|
||||
default:
|
||||
return this.flow_parseGenericType(start, id);
|
||||
}
|
||||
};
|
||||
|
||||
// The parsing of types roughly parallels the parsing of expressions, and
|
||||
// primary types are kind of like primary expressions...they're the
|
||||
// primitives with which other types are constructed.
|
||||
pp.flow_parsePrimaryType = function () {
|
||||
var typeIdentifier = null;
|
||||
var params = null;
|
||||
var returnType = null;
|
||||
var start = this.markPosition();
|
||||
var node = this.startNode();
|
||||
var rest = null;
|
||||
var tmp;
|
||||
var typeParameters;
|
||||
var token;
|
||||
var type;
|
||||
var isGroupedType = false;
|
||||
|
||||
switch (this.type) {
|
||||
case tt.name:
|
||||
return this.flow_identToTypeAnnotation(start, node, this.parseIdent());
|
||||
|
||||
case tt.braceL:
|
||||
return this.flow_parseObjectType();
|
||||
|
||||
case tt.bracketL:
|
||||
return this.flow_parseTupleType();
|
||||
|
||||
case tt.relational:
|
||||
if (this.value === "<") {
|
||||
node.typeParameters = this.flow_parseTypeParameterDeclaration();
|
||||
this.expect(tt.parenL);
|
||||
tmp = this.flow_parseFunctionTypeParams();
|
||||
node.params = tmp.params;
|
||||
node.rest = tmp.rest;
|
||||
this.expect(tt.parenR);
|
||||
|
||||
this.expect(tt.arrow);
|
||||
|
||||
node.returnType = this.flow_parseType();
|
||||
|
||||
return this.finishNode(node, "FunctionTypeAnnotation");
|
||||
}
|
||||
|
||||
case tt.parenL:
|
||||
this.next();
|
||||
|
||||
// Check to see if this is actually a grouped type
|
||||
if (this.type !== tt.parenR && this.type !== tt.ellipsis) {
|
||||
if (this.type === tt.name) {
|
||||
var token = this.lookahead().type;
|
||||
isGroupedType = token !== tt.question && token !== tt.colon;
|
||||
} else {
|
||||
isGroupedType = true;
|
||||
}
|
||||
}
|
||||
|
||||
if (isGroupedType) {
|
||||
type = this.flow_parseType();
|
||||
this.expect(tt.parenR);
|
||||
|
||||
// If we see a => next then someone was probably confused about
|
||||
// function types, so we can provide a better error message
|
||||
if (this.eat(tt.arrow)) {
|
||||
this.raise(node, "Unexpected token =>. It looks like " + "you are trying to write a function type, but you ended up " + "writing a grouped type followed by an =>, which is a syntax " + "error. Remember, function type parameters are named so function " + "types look like (name1: type1, name2: type2) => returnType. You " + "probably wrote (type1) => returnType");
|
||||
}
|
||||
|
||||
return type;
|
||||
}
|
||||
|
||||
tmp = this.flow_parseFunctionTypeParams();
|
||||
node.params = tmp.params;
|
||||
node.rest = tmp.rest;
|
||||
|
||||
this.expect(tt.parenR);
|
||||
|
||||
this.expect(tt.arrow);
|
||||
|
||||
node.returnType = this.flow_parseType();
|
||||
node.typeParameters = null;
|
||||
|
||||
return this.finishNode(node, "FunctionTypeAnnotation");
|
||||
|
||||
case tt.string:
|
||||
node.value = this.value;
|
||||
node.raw = this.input.slice(this.start, this.end);
|
||||
this.next();
|
||||
return this.finishNode(node, "StringLiteralTypeAnnotation");
|
||||
|
||||
default:
|
||||
if (this.type.keyword) {
|
||||
switch (this.type.keyword) {
|
||||
case "void":
|
||||
return this.flow_parseVoidType();
|
||||
|
||||
case "typeof":
|
||||
return this.flow_parseTypeofType();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
this.unexpected();
|
||||
};
|
||||
|
||||
pp.flow_parsePostfixType = function () {
|
||||
var node = this.startNode();
|
||||
var type = node.elementType = this.flow_parsePrimaryType();
|
||||
if (this.type === tt.bracketL) {
|
||||
this.expect(tt.bracketL);
|
||||
this.expect(tt.bracketR);
|
||||
return this.finishNode(node, "ArrayTypeAnnotation");
|
||||
}
|
||||
return type;
|
||||
};
|
||||
|
||||
pp.flow_parsePrefixType = function () {
|
||||
var node = this.startNode();
|
||||
if (this.eat(tt.question)) {
|
||||
node.typeAnnotation = this.flow_parsePrefixType();
|
||||
return this.finishNode(node, "NullableTypeAnnotation");
|
||||
}
|
||||
return this.flow_parsePostfixType();
|
||||
};
|
||||
|
||||
pp.flow_parseIntersectionType = function () {
|
||||
var node = this.startNode();
|
||||
var type = this.flow_parsePrefixType();
|
||||
node.types = [type];
|
||||
while (this.eat(tt.bitwiseAND)) {
|
||||
node.types.push(this.flow_parsePrefixType());
|
||||
}
|
||||
return node.types.length === 1 ? type : this.finishNode(node, "IntersectionTypeAnnotation");
|
||||
};
|
||||
|
||||
pp.flow_parseUnionType = function () {
|
||||
var node = this.startNode();
|
||||
var type = this.flow_parseIntersectionType();
|
||||
node.types = [type];
|
||||
while (this.eat(tt.bitwiseOR)) {
|
||||
node.types.push(this.flow_parseIntersectionType());
|
||||
}
|
||||
return node.types.length === 1 ? type : this.finishNode(node, "UnionTypeAnnotation");
|
||||
};
|
||||
|
||||
pp.flow_parseType = function () {
|
||||
var oldInType = this.inType;
|
||||
this.inType = true;
|
||||
var type = this.flow_parseUnionType();
|
||||
this.inType = oldInType;
|
||||
return type;
|
||||
};
|
||||
|
||||
pp.flow_parseTypeAnnotation = function () {
|
||||
var node = this.startNode();
|
||||
|
||||
var oldInType = this.inType;
|
||||
this.inType = true;
|
||||
this.expect(tt.colon);
|
||||
node.typeAnnotation = this.flow_parseType();
|
||||
this.inType = oldInType;
|
||||
|
||||
return this.finishNode(node, "TypeAnnotation");
|
||||
};
|
||||
|
||||
pp.flow_parseTypeAnnotatableIdentifier = function (requireTypeAnnotation, canBeOptionalParam) {
|
||||
var node = this.startNode();
|
||||
var ident = this.parseIdent();
|
||||
var isOptionalParam = false;
|
||||
|
||||
if (canBeOptionalParam && this.eat(tt.question)) {
|
||||
this.expect(tt.question);
|
||||
isOptionalParam = true;
|
||||
}
|
||||
|
||||
if (requireTypeAnnotation || this.type === tt.colon) {
|
||||
ident.typeAnnotation = this.flow_parseTypeAnnotation();
|
||||
this.finishNode(ident, ident.type);
|
||||
}
|
||||
|
||||
if (isOptionalParam) {
|
||||
ident.optional = true;
|
||||
this.finishNode(ident, ident.type);
|
||||
}
|
||||
|
||||
return ident;
|
||||
};
|
||||
|
||||
acorn.plugins.flow = function (instance) {
|
||||
// function name(): string {}
|
||||
instance.extend("parseFunctionBody", function (inner) {
|
||||
return function (node, allowExpression) {
|
||||
if (this.type === tt.colon) {
|
||||
node.returnType = this.flow_parseTypeAnnotation();
|
||||
}
|
||||
|
||||
return inner.call(this, node, allowExpression);
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("parseStatement", function (inner) {
|
||||
return function (declaration, topLevel) {
|
||||
// strict mode handling of `interface` since it's a reserved word
|
||||
if (this.strict && this.type === tt.name && this.value === "interface") {
|
||||
var node = this.startNode();
|
||||
this.next();
|
||||
return this.flow_parseInterface(node);
|
||||
} else {
|
||||
return inner.call(this, declaration, topLevel);
|
||||
}
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("parseExpressionStatement", function (inner) {
|
||||
return function (node, expr) {
|
||||
if (expr.type === "Identifier") {
|
||||
if (expr.name === "declare") {
|
||||
if (this.type === tt._class || this.type === tt.name || this.type === tt._function || this.type === tt._var) {
|
||||
return this.flow_parseDeclare(node);
|
||||
}
|
||||
} else if (this.type === tt.name) {
|
||||
if (expr.name === "interface") {
|
||||
return this.flow_parseInterface(node);
|
||||
} else if (expr.name === "type") {
|
||||
return this.flow_parseTypeAlias(node);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return inner.call(this, node, expr);
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("shouldParseExportDeclaration", function (inner) {
|
||||
return function () {
|
||||
return this.isContextual("type") || inner.call(this);
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("parseParenItem", function (inner) {
|
||||
return function (node, start) {
|
||||
if (this.type === tt.colon) {
|
||||
var typeCastNode = this.startNodeAt(start);
|
||||
typeCastNode.expression = node;
|
||||
typeCastNode.typeAnnotation = this.flow_parseTypeAnnotation();
|
||||
return this.finishNode(typeCastNode, "TypeCastExpression");
|
||||
} else {
|
||||
return node;
|
||||
}
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("parseClassId", function (inner) {
|
||||
return function (node, isStatement) {
|
||||
inner.call(this, node, isStatement);
|
||||
if (this.isRelational("<")) {
|
||||
node.typeParameters = this.flow_parseTypeParameterDeclaration();
|
||||
}
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("readToken", function (inner) {
|
||||
return function (code) {
|
||||
if (this.inType && (code === 62 || code === 60)) {
|
||||
return this.finishOp(tt.relational, 1);
|
||||
} else {
|
||||
return inner.call(this, code);
|
||||
}
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("jsx_readToken", function (inner) {
|
||||
return function () {
|
||||
if (!this.inType) return inner.call(this);
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("parseParenArrowList", function (inner) {
|
||||
return function (start, exprList, isAsync) {
|
||||
for (var i = 0; i < exprList.length; i++) {
|
||||
var listItem = exprList[i];
|
||||
if (listItem.type === "TypeCastExpression") {
|
||||
var expr = listItem.expression;
|
||||
expr.typeAnnotation = listItem.typeAnnotation;
|
||||
exprList[i] = expr;
|
||||
}
|
||||
}
|
||||
return inner.call(this, start, exprList, isAsync);
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("parseClassMethod", function (inner) {
|
||||
return function (classBody, method, isGenerator, isAsync) {
|
||||
var classProperty = false;
|
||||
|
||||
if (this.type === tt.colon) {
|
||||
method.typeAnnotation = this.flow_parseTypeAnnotation();
|
||||
classProperty = true;
|
||||
}
|
||||
|
||||
if (classProperty) {
|
||||
this.semicolon();
|
||||
classBody.body.push(this.finishNode(method, "ClassProperty"));
|
||||
} else {
|
||||
var typeParameters;
|
||||
if (this.isRelational("<")) {
|
||||
typeParameters = this.flow_parseTypeParameterDeclaration();
|
||||
}
|
||||
method.value = this.parseMethod(isGenerator, isAsync);
|
||||
method.value.typeParameters = typeParameters;
|
||||
classBody.body.push(this.finishNode(method, "MethodDefinition"));
|
||||
}
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("parseClassSuper", function (inner) {
|
||||
return function (node, isStatement) {
|
||||
inner.call(this, node, isStatement);
|
||||
if (node.superClass && this.isRelational("<")) {
|
||||
node.superTypeParameters = this.flow_parseTypeParameterInstantiation();
|
||||
}
|
||||
if (this.isContextual("implements")) {
|
||||
this.next();
|
||||
var implemented = node["implements"] = [];
|
||||
do {
|
||||
var node = this.startNode();
|
||||
node.id = this.parseIdent();
|
||||
if (this.isRelational("<")) {
|
||||
node.typeParameters = this.flow_parseTypeParameterInstantiation();
|
||||
} else {
|
||||
node.typeParameters = null;
|
||||
}
|
||||
implemented.push(this.finishNode(node, "ClassImplements"));
|
||||
} while (this.eat(tt.comma));
|
||||
}
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("parseObjPropValue", function (inner) {
|
||||
return function (prop) {
|
||||
var typeParameters;
|
||||
if (this.isRelational("<")) {
|
||||
typeParameters = this.flow_parseTypeParameterDeclaration();
|
||||
if (this.type !== tt.parenL) this.unexpected();
|
||||
}
|
||||
inner.apply(this, arguments);
|
||||
prop.value.typeParameters = typeParameters;
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("parseAssignableListItemTypes", function (inner) {
|
||||
return function (param) {
|
||||
if (this.eat(tt.question)) {
|
||||
param.optional = true;
|
||||
}
|
||||
if (this.type === tt.colon) {
|
||||
param.typeAnnotation = this.flow_parseTypeAnnotation();
|
||||
}
|
||||
this.finishNode(param, param.type);
|
||||
return param;
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("parseImportSpecifiers", function (inner) {
|
||||
return function (node) {
|
||||
node.isType = false;
|
||||
if (this.isContextual("type")) {
|
||||
var start = this.markPosition();
|
||||
var typeId = this.parseIdent();
|
||||
if (this.type === tt.name && this.value !== "from" || this.type === tt.braceL || this.type === tt.star) {
|
||||
node.isType = true;
|
||||
} else {
|
||||
node.specifiers.push(this.parseImportSpecifierDefault(typeId, start));
|
||||
if (this.isContextual("from")) return;
|
||||
this.eat(tt.comma);
|
||||
}
|
||||
}
|
||||
inner.call(this, node);
|
||||
};
|
||||
});
|
||||
|
||||
// function foo<T>() {}
|
||||
instance.extend("parseFunctionParams", function (inner) {
|
||||
return function (node) {
|
||||
if (this.isRelational("<")) {
|
||||
node.typeParameters = this.flow_parseTypeParameterDeclaration();
|
||||
}
|
||||
inner.call(this, node);
|
||||
};
|
||||
});
|
||||
|
||||
// var foo: string = bar
|
||||
instance.extend("parseVarHead", function (inner) {
|
||||
return function (decl) {
|
||||
inner.call(this, decl);
|
||||
if (this.type === tt.colon) {
|
||||
decl.id.typeAnnotation = this.flow_parseTypeAnnotation();
|
||||
this.finishNode(decl.id, decl.id.type);
|
||||
}
|
||||
};
|
||||
});
|
||||
};
|
||||
@ -1,637 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
var acorn = require("..");
|
||||
|
||||
var tt = acorn.tokTypes;
|
||||
var tc = acorn.tokContexts;
|
||||
|
||||
tc.j_oTag = new acorn.TokContext("<tag", false);
|
||||
tc.j_cTag = new acorn.TokContext("</tag", false);
|
||||
tc.j_expr = new acorn.TokContext("<tag>...</tag>", true, true);
|
||||
|
||||
tt.jsxName = new acorn.TokenType("jsxName");
|
||||
tt.jsxText = new acorn.TokenType("jsxText", { beforeExpr: true });
|
||||
tt.jsxTagStart = new acorn.TokenType("jsxTagStart");
|
||||
tt.jsxTagEnd = new acorn.TokenType("jsxTagEnd");
|
||||
|
||||
tt.jsxTagStart.updateContext = function () {
|
||||
this.context.push(tc.j_expr); // treat as beginning of JSX expression
|
||||
this.context.push(tc.j_oTag); // start opening tag context
|
||||
this.exprAllowed = false;
|
||||
};
|
||||
tt.jsxTagEnd.updateContext = function (prevType) {
|
||||
var out = this.context.pop();
|
||||
if (out === tc.j_oTag && prevType === tt.slash || out === tc.j_cTag) {
|
||||
this.context.pop();
|
||||
this.exprAllowed = this.curContext() === tc.j_expr;
|
||||
} else {
|
||||
this.exprAllowed = true;
|
||||
}
|
||||
};
|
||||
|
||||
var pp = acorn.Parser.prototype;
|
||||
|
||||
// Reads inline JSX contents token.
|
||||
|
||||
pp.jsx_readToken = function () {
|
||||
var out = "",
|
||||
chunkStart = this.pos;
|
||||
for (;;) {
|
||||
if (this.pos >= this.input.length) this.raise(this.start, "Unterminated JSX contents");
|
||||
var ch = this.input.charCodeAt(this.pos);
|
||||
|
||||
switch (ch) {
|
||||
case 60: // '<'
|
||||
case 123:
|
||||
// '{'
|
||||
if (this.pos === this.start) {
|
||||
if (ch === 60 && this.exprAllowed) {
|
||||
++this.pos;
|
||||
return this.finishToken(tt.jsxTagStart);
|
||||
}
|
||||
return this.getTokenFromCode(ch);
|
||||
}
|
||||
out += this.input.slice(chunkStart, this.pos);
|
||||
return this.finishToken(tt.jsxText, out);
|
||||
|
||||
case 38:
|
||||
// '&'
|
||||
out += this.input.slice(chunkStart, this.pos);
|
||||
out += this.jsx_readEntity();
|
||||
chunkStart = this.pos;
|
||||
break;
|
||||
|
||||
default:
|
||||
if (acorn.isNewLine(ch)) {
|
||||
out += this.input.slice(chunkStart, this.pos);
|
||||
++this.pos;
|
||||
if (ch === 13 && this.input.charCodeAt(this.pos) === 10) {
|
||||
++this.pos;
|
||||
out += "\n";
|
||||
} else {
|
||||
out += String.fromCharCode(ch);
|
||||
}
|
||||
if (this.options.locations) {
|
||||
++this.curLine;
|
||||
this.lineStart = this.pos;
|
||||
}
|
||||
chunkStart = this.pos;
|
||||
} else {
|
||||
++this.pos;
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
pp.jsx_readString = function (quote) {
|
||||
var out = "",
|
||||
chunkStart = ++this.pos;
|
||||
for (;;) {
|
||||
if (this.pos >= this.input.length) this.raise(this.start, "Unterminated string constant");
|
||||
var ch = this.input.charCodeAt(this.pos);
|
||||
if (ch === quote) break;
|
||||
if (ch === 38) {
|
||||
// '&'
|
||||
out += this.input.slice(chunkStart, this.pos);
|
||||
out += this.jsx_readEntity();
|
||||
chunkStart = this.pos;
|
||||
} else {
|
||||
++this.pos;
|
||||
}
|
||||
}
|
||||
out += this.input.slice(chunkStart, this.pos++);
|
||||
return this.finishToken(tt.string, out);
|
||||
};
|
||||
|
||||
var XHTMLEntities = {
|
||||
quot: "\"",
|
||||
amp: "&",
|
||||
apos: "'",
|
||||
lt: "<",
|
||||
gt: ">",
|
||||
nbsp: " ",
|
||||
iexcl: "¡",
|
||||
cent: "¢",
|
||||
pound: "£",
|
||||
curren: "¤",
|
||||
yen: "¥",
|
||||
brvbar: "¦",
|
||||
sect: "§",
|
||||
uml: "¨",
|
||||
copy: "©",
|
||||
ordf: "ª",
|
||||
laquo: "«",
|
||||
not: "¬",
|
||||
shy: "",
|
||||
reg: "®",
|
||||
macr: "¯",
|
||||
deg: "°",
|
||||
plusmn: "±",
|
||||
sup2: "²",
|
||||
sup3: "³",
|
||||
acute: "´",
|
||||
micro: "µ",
|
||||
para: "¶",
|
||||
middot: "·",
|
||||
cedil: "¸",
|
||||
sup1: "¹",
|
||||
ordm: "º",
|
||||
raquo: "»",
|
||||
frac14: "¼",
|
||||
frac12: "½",
|
||||
frac34: "¾",
|
||||
iquest: "¿",
|
||||
Agrave: "À",
|
||||
Aacute: "Á",
|
||||
Acirc: "Â",
|
||||
Atilde: "Ã",
|
||||
Auml: "Ä",
|
||||
Aring: "Å",
|
||||
AElig: "Æ",
|
||||
Ccedil: "Ç",
|
||||
Egrave: "È",
|
||||
Eacute: "É",
|
||||
Ecirc: "Ê",
|
||||
Euml: "Ë",
|
||||
Igrave: "Ì",
|
||||
Iacute: "Í",
|
||||
Icirc: "Î",
|
||||
Iuml: "Ï",
|
||||
ETH: "Ð",
|
||||
Ntilde: "Ñ",
|
||||
Ograve: "Ò",
|
||||
Oacute: "Ó",
|
||||
Ocirc: "Ô",
|
||||
Otilde: "Õ",
|
||||
Ouml: "Ö",
|
||||
times: "×",
|
||||
Oslash: "Ø",
|
||||
Ugrave: "Ù",
|
||||
Uacute: "Ú",
|
||||
Ucirc: "Û",
|
||||
Uuml: "Ü",
|
||||
Yacute: "Ý",
|
||||
THORN: "Þ",
|
||||
szlig: "ß",
|
||||
agrave: "à",
|
||||
aacute: "á",
|
||||
acirc: "â",
|
||||
atilde: "ã",
|
||||
auml: "ä",
|
||||
aring: "å",
|
||||
aelig: "æ",
|
||||
ccedil: "ç",
|
||||
egrave: "è",
|
||||
eacute: "é",
|
||||
ecirc: "ê",
|
||||
euml: "ë",
|
||||
igrave: "ì",
|
||||
iacute: "í",
|
||||
icirc: "î",
|
||||
iuml: "ï",
|
||||
eth: "ð",
|
||||
ntilde: "ñ",
|
||||
ograve: "ò",
|
||||
oacute: "ó",
|
||||
ocirc: "ô",
|
||||
otilde: "õ",
|
||||
ouml: "ö",
|
||||
divide: "÷",
|
||||
oslash: "ø",
|
||||
ugrave: "ù",
|
||||
uacute: "ú",
|
||||
ucirc: "û",
|
||||
uuml: "ü",
|
||||
yacute: "ý",
|
||||
thorn: "þ",
|
||||
yuml: "ÿ",
|
||||
OElig: "Œ",
|
||||
oelig: "œ",
|
||||
Scaron: "Š",
|
||||
scaron: "š",
|
||||
Yuml: "Ÿ",
|
||||
fnof: "ƒ",
|
||||
circ: "ˆ",
|
||||
tilde: "˜",
|
||||
Alpha: "Α",
|
||||
Beta: "Β",
|
||||
Gamma: "Γ",
|
||||
Delta: "Δ",
|
||||
Epsilon: "Ε",
|
||||
Zeta: "Ζ",
|
||||
Eta: "Η",
|
||||
Theta: "Θ",
|
||||
Iota: "Ι",
|
||||
Kappa: "Κ",
|
||||
Lambda: "Λ",
|
||||
Mu: "Μ",
|
||||
Nu: "Ν",
|
||||
Xi: "Ξ",
|
||||
Omicron: "Ο",
|
||||
Pi: "Π",
|
||||
Rho: "Ρ",
|
||||
Sigma: "Σ",
|
||||
Tau: "Τ",
|
||||
Upsilon: "Υ",
|
||||
Phi: "Φ",
|
||||
Chi: "Χ",
|
||||
Psi: "Ψ",
|
||||
Omega: "Ω",
|
||||
alpha: "α",
|
||||
beta: "β",
|
||||
gamma: "γ",
|
||||
delta: "δ",
|
||||
epsilon: "ε",
|
||||
zeta: "ζ",
|
||||
eta: "η",
|
||||
theta: "θ",
|
||||
iota: "ι",
|
||||
kappa: "κ",
|
||||
lambda: "λ",
|
||||
mu: "μ",
|
||||
nu: "ν",
|
||||
xi: "ξ",
|
||||
omicron: "ο",
|
||||
pi: "π",
|
||||
rho: "ρ",
|
||||
sigmaf: "ς",
|
||||
sigma: "σ",
|
||||
tau: "τ",
|
||||
upsilon: "υ",
|
||||
phi: "φ",
|
||||
chi: "χ",
|
||||
psi: "ψ",
|
||||
omega: "ω",
|
||||
thetasym: "ϑ",
|
||||
upsih: "ϒ",
|
||||
piv: "ϖ",
|
||||
ensp: " ",
|
||||
emsp: " ",
|
||||
thinsp: " ",
|
||||
zwnj: "",
|
||||
zwj: "",
|
||||
lrm: "",
|
||||
rlm: "",
|
||||
ndash: "–",
|
||||
mdash: "—",
|
||||
lsquo: "‘",
|
||||
rsquo: "’",
|
||||
sbquo: "‚",
|
||||
ldquo: "“",
|
||||
rdquo: "”",
|
||||
bdquo: "„",
|
||||
dagger: "†",
|
||||
Dagger: "‡",
|
||||
bull: "•",
|
||||
hellip: "…",
|
||||
permil: "‰",
|
||||
prime: "′",
|
||||
Prime: "″",
|
||||
lsaquo: "‹",
|
||||
rsaquo: "›",
|
||||
oline: "‾",
|
||||
frasl: "⁄",
|
||||
euro: "€",
|
||||
image: "ℑ",
|
||||
weierp: "℘",
|
||||
real: "ℜ",
|
||||
trade: "™",
|
||||
alefsym: "ℵ",
|
||||
larr: "←",
|
||||
uarr: "↑",
|
||||
rarr: "→",
|
||||
darr: "↓",
|
||||
harr: "↔",
|
||||
crarr: "↵",
|
||||
lArr: "⇐",
|
||||
uArr: "⇑",
|
||||
rArr: "⇒",
|
||||
dArr: "⇓",
|
||||
hArr: "⇔",
|
||||
forall: "∀",
|
||||
part: "∂",
|
||||
exist: "∃",
|
||||
empty: "∅",
|
||||
nabla: "∇",
|
||||
isin: "∈",
|
||||
notin: "∉",
|
||||
ni: "∋",
|
||||
prod: "∏",
|
||||
sum: "∑",
|
||||
minus: "−",
|
||||
lowast: "∗",
|
||||
radic: "√",
|
||||
prop: "∝",
|
||||
infin: "∞",
|
||||
ang: "∠",
|
||||
and: "∧",
|
||||
or: "∨",
|
||||
cap: "∩",
|
||||
cup: "∪",
|
||||
int: "∫",
|
||||
there4: "∴",
|
||||
sim: "∼",
|
||||
cong: "≅",
|
||||
asymp: "≈",
|
||||
ne: "≠",
|
||||
equiv: "≡",
|
||||
le: "≤",
|
||||
ge: "≥",
|
||||
sub: "⊂",
|
||||
sup: "⊃",
|
||||
nsub: "⊄",
|
||||
sube: "⊆",
|
||||
supe: "⊇",
|
||||
oplus: "⊕",
|
||||
otimes: "⊗",
|
||||
perp: "⊥",
|
||||
sdot: "⋅",
|
||||
lceil: "⌈",
|
||||
rceil: "⌉",
|
||||
lfloor: "⌊",
|
||||
rfloor: "⌋",
|
||||
lang: "〈",
|
||||
rang: "〉",
|
||||
loz: "◊",
|
||||
spades: "♠",
|
||||
clubs: "♣",
|
||||
hearts: "♥",
|
||||
diams: "♦"
|
||||
};
|
||||
|
||||
var hexNumber = /^[\da-fA-F]+$/;
|
||||
var decimalNumber = /^\d+$/;
|
||||
|
||||
pp.jsx_readEntity = function () {
|
||||
var str = "",
|
||||
count = 0,
|
||||
entity;
|
||||
var ch = this.input[this.pos];
|
||||
if (ch !== "&") this.raise(this.pos, "Entity must start with an ampersand");
|
||||
var startPos = ++this.pos;
|
||||
while (this.pos < this.input.length && count++ < 10) {
|
||||
ch = this.input[this.pos++];
|
||||
if (ch === ";") {
|
||||
if (str[0] === "#") {
|
||||
if (str[1] === "x") {
|
||||
str = str.substr(2);
|
||||
if (hexNumber.test(str)) entity = String.fromCharCode(parseInt(str, 16));
|
||||
} else {
|
||||
str = str.substr(1);
|
||||
if (decimalNumber.test(str)) entity = String.fromCharCode(parseInt(str, 10));
|
||||
}
|
||||
} else {
|
||||
entity = XHTMLEntities[str];
|
||||
}
|
||||
break;
|
||||
}
|
||||
str += ch;
|
||||
}
|
||||
if (!entity) {
|
||||
this.pos = startPos;
|
||||
return "&";
|
||||
}
|
||||
return entity;
|
||||
};
|
||||
|
||||
// Read a JSX identifier (valid tag or attribute name).
|
||||
//
|
||||
// Optimized version since JSX identifiers can't contain
|
||||
// escape characters and so can be read as single slice.
|
||||
// Also assumes that first character was already checked
|
||||
// by isIdentifierStart in readToken.
|
||||
|
||||
pp.jsx_readWord = function () {
|
||||
var ch,
|
||||
start = this.pos;
|
||||
do {
|
||||
ch = this.input.charCodeAt(++this.pos);
|
||||
} while (acorn.isIdentifierChar(ch) || ch === 45); // '-'
|
||||
return this.finishToken(tt.jsxName, this.input.slice(start, this.pos));
|
||||
};
|
||||
|
||||
// Transforms JSX element name to string.
|
||||
|
||||
function getQualifiedJSXName(object) {
|
||||
if (object.type === "JSXIdentifier") return object.name;
|
||||
|
||||
if (object.type === "JSXNamespacedName") return object.namespace.name + ":" + object.name.name;
|
||||
|
||||
if (object.type === "JSXMemberExpression") return getQualifiedJSXName(object.object) + "." + getQualifiedJSXName(object.property);
|
||||
}
|
||||
|
||||
// Parse next token as JSX identifier
|
||||
|
||||
pp.jsx_parseIdentifier = function () {
|
||||
var node = this.startNode();
|
||||
if (this.type === tt.jsxName) node.name = this.value;else if (this.type.keyword) node.name = this.type.keyword;else this.unexpected();
|
||||
this.next();
|
||||
return this.finishNode(node, "JSXIdentifier");
|
||||
};
|
||||
|
||||
// Parse namespaced identifier.
|
||||
|
||||
pp.jsx_parseNamespacedName = function () {
|
||||
var start = this.markPosition();
|
||||
var name = this.jsx_parseIdentifier();
|
||||
if (!this.eat(tt.colon)) return name;
|
||||
var node = this.startNodeAt(start);
|
||||
node.namespace = name;
|
||||
node.name = this.jsx_parseIdentifier();
|
||||
return this.finishNode(node, "JSXNamespacedName");
|
||||
};
|
||||
|
||||
// Parses element name in any form - namespaced, member
|
||||
// or single identifier.
|
||||
|
||||
pp.jsx_parseElementName = function () {
|
||||
var start = this.markPosition();
|
||||
var node = this.jsx_parseNamespacedName();
|
||||
while (this.eat(tt.dot)) {
|
||||
var newNode = this.startNodeAt(start);
|
||||
newNode.object = node;
|
||||
newNode.property = this.jsx_parseIdentifier();
|
||||
node = this.finishNode(newNode, "JSXMemberExpression");
|
||||
}
|
||||
return node;
|
||||
};
|
||||
|
||||
// Parses any type of JSX attribute value.
|
||||
|
||||
pp.jsx_parseAttributeValue = function () {
|
||||
switch (this.type) {
|
||||
case tt.braceL:
|
||||
var node = this.jsx_parseExpressionContainer();
|
||||
if (node.expression.type === "JSXEmptyExpression") this.raise(node.start, "JSX attributes must only be assigned a non-empty expression");
|
||||
return node;
|
||||
|
||||
case tt.jsxTagStart:
|
||||
case tt.string:
|
||||
return this.parseExprAtom();
|
||||
|
||||
default:
|
||||
this.raise(this.start, "JSX value should be either an expression or a quoted JSX text");
|
||||
}
|
||||
};
|
||||
|
||||
// JSXEmptyExpression is unique type since it doesn't actually parse anything,
|
||||
// and so it should start at the end of last read token (left brace) and finish
|
||||
// at the beginning of the next one (right brace).
|
||||
|
||||
pp.jsx_parseEmptyExpression = function () {
|
||||
var tmp = this.start;
|
||||
this.start = this.lastTokEnd;
|
||||
this.lastTokEnd = tmp;
|
||||
|
||||
tmp = this.startLoc;
|
||||
this.startLoc = this.lastTokEndLoc;
|
||||
this.lastTokEndLoc = tmp;
|
||||
|
||||
return this.finishNode(this.startNode(), "JSXEmptyExpression");
|
||||
};
|
||||
|
||||
// Parses JSX expression enclosed into curly brackets.
|
||||
|
||||
pp.jsx_parseExpressionContainer = function () {
|
||||
var node = this.startNode();
|
||||
this.next();
|
||||
node.expression = this.type === tt.braceR ? this.jsx_parseEmptyExpression() : this.parseExpression();
|
||||
this.expect(tt.braceR);
|
||||
return this.finishNode(node, "JSXExpressionContainer");
|
||||
};
|
||||
|
||||
// Parses following JSX attribute name-value pair.
|
||||
|
||||
pp.jsx_parseAttribute = function () {
|
||||
var node = this.startNode();
|
||||
if (this.eat(tt.braceL)) {
|
||||
this.expect(tt.ellipsis);
|
||||
node.argument = this.parseMaybeAssign();
|
||||
this.expect(tt.braceR);
|
||||
return this.finishNode(node, "JSXSpreadAttribute");
|
||||
}
|
||||
node.name = this.jsx_parseNamespacedName();
|
||||
node.value = this.eat(tt.eq) ? this.jsx_parseAttributeValue() : null;
|
||||
return this.finishNode(node, "JSXAttribute");
|
||||
};
|
||||
|
||||
// Parses JSX opening tag starting after '<'.
|
||||
|
||||
pp.jsx_parseOpeningElementAt = function (start) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.attributes = [];
|
||||
node.name = this.jsx_parseElementName();
|
||||
while (this.type !== tt.slash && this.type !== tt.jsxTagEnd) node.attributes.push(this.jsx_parseAttribute());
|
||||
node.selfClosing = this.eat(tt.slash);
|
||||
this.expect(tt.jsxTagEnd);
|
||||
return this.finishNode(node, "JSXOpeningElement");
|
||||
};
|
||||
|
||||
// Parses JSX closing tag starting after '</'.
|
||||
|
||||
pp.jsx_parseClosingElementAt = function (start) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.name = this.jsx_parseElementName();
|
||||
this.expect(tt.jsxTagEnd);
|
||||
return this.finishNode(node, "JSXClosingElement");
|
||||
};
|
||||
|
||||
// Parses entire JSX element, including it's opening tag
|
||||
// (starting after '<'), attributes, contents and closing tag.
|
||||
|
||||
pp.jsx_parseElementAt = function (start) {
|
||||
var node = this.startNodeAt(start);
|
||||
var children = [];
|
||||
var openingElement = this.jsx_parseOpeningElementAt(start);
|
||||
var closingElement = null;
|
||||
|
||||
if (!openingElement.selfClosing) {
|
||||
contents: for (;;) {
|
||||
switch (this.type) {
|
||||
case tt.jsxTagStart:
|
||||
start = this.markPosition();
|
||||
this.next();
|
||||
if (this.eat(tt.slash)) {
|
||||
closingElement = this.jsx_parseClosingElementAt(start);
|
||||
break contents;
|
||||
}
|
||||
children.push(this.jsx_parseElementAt(start));
|
||||
break;
|
||||
|
||||
case tt.jsxText:
|
||||
children.push(this.parseExprAtom());
|
||||
break;
|
||||
|
||||
case tt.braceL:
|
||||
children.push(this.jsx_parseExpressionContainer());
|
||||
break;
|
||||
|
||||
default:
|
||||
this.unexpected();
|
||||
}
|
||||
}
|
||||
if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) this.raise(closingElement.start, "Expected corresponding JSX closing tag for <" + getQualifiedJSXName(openingElement.name) + ">");
|
||||
}
|
||||
|
||||
node.openingElement = openingElement;
|
||||
node.closingElement = closingElement;
|
||||
node.children = children;
|
||||
return this.finishNode(node, "JSXElement");
|
||||
};
|
||||
|
||||
// Parses entire JSX element from current position.
|
||||
|
||||
pp.jsx_parseElement = function () {
|
||||
var start = this.markPosition();
|
||||
this.next();
|
||||
return this.jsx_parseElementAt(start);
|
||||
};
|
||||
|
||||
acorn.plugins.jsx = function (instance) {
|
||||
instance.extend("parseExprAtom", function (inner) {
|
||||
return function (refShortHandDefaultPos) {
|
||||
if (this.type === tt.jsxText) return this.parseLiteral(this.value);else if (this.type === tt.jsxTagStart) return this.jsx_parseElement();else return inner.call(this, refShortHandDefaultPos);
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("readToken", function (inner) {
|
||||
return function (code) {
|
||||
var context = this.curContext();
|
||||
|
||||
if (context === tc.j_expr) return this.jsx_readToken();
|
||||
|
||||
if (context === tc.j_oTag || context === tc.j_cTag) {
|
||||
if (acorn.isIdentifierStart(code)) return this.jsx_readWord();
|
||||
|
||||
if (code == 62) {
|
||||
++this.pos;
|
||||
return this.finishToken(tt.jsxTagEnd);
|
||||
}
|
||||
|
||||
if ((code === 34 || code === 39) && context == tc.j_oTag) return this.jsx_readString(code);
|
||||
}
|
||||
|
||||
if (code === 60 && this.exprAllowed) {
|
||||
++this.pos;
|
||||
return this.finishToken(tt.jsxTagStart);
|
||||
}
|
||||
return inner.call(this, code);
|
||||
};
|
||||
});
|
||||
|
||||
instance.extend("updateContext", function (inner) {
|
||||
return function (prevType) {
|
||||
if (this.type == tt.braceL) {
|
||||
var curContext = this.curContext();
|
||||
if (curContext == tc.j_oTag) this.context.push(tc.b_expr);else if (curContext == tc.j_expr) this.context.push(tc.b_tmpl);else inner.call(this, prevType);
|
||||
this.exprAllowed = true;
|
||||
} else if (this.type === tt.slash && prevType === tt.jsxTagStart) {
|
||||
this.context.length -= 2; // do not consider JSX expr -> JSX open tag -> ... anymore
|
||||
this.context.push(tc.j_cTag); // reconsider as closing tag context
|
||||
this.exprAllowed = false;
|
||||
} else {
|
||||
return inner.call(this, prevType);
|
||||
}
|
||||
};
|
||||
});
|
||||
};
|
||||
@ -1,668 +0,0 @@
|
||||
// A recursive descent parser operates by defining functions for all
|
||||
// syntactic elements, and recursively calling those, each function
|
||||
// advancing the input stream and returning an AST node. Precedence
|
||||
// of constructs (for example, the fact that `!x[1]` means `!(x[1])`
|
||||
// instead of `(!x)[1]` is handled by the fact that the parser
|
||||
// function that parses unary prefix operators is called first, and
|
||||
// in turn calls the function that parses `[]` subscripts — that
|
||||
// way, it'll receive the node for `x[1]` already parsed, and wraps
|
||||
// *that* in the unary operator node.
|
||||
//
|
||||
// Acorn uses an [operator precedence parser][opp] to handle binary
|
||||
// operator precedence, because it is much more compact than using
|
||||
// the technique outlined above, which uses different, nesting
|
||||
// functions to specify precedence, for all of the ten binary
|
||||
// precedence levels that JavaScript defines.
|
||||
//
|
||||
// [opp]: http://en.wikipedia.org/wiki/Operator-precedence_parser
|
||||
|
||||
import {types as tt} from "./tokentype"
|
||||
import {Parser} from "./state"
|
||||
import {reservedWords} from "./identifier"
|
||||
import {has} from "./util"
|
||||
|
||||
const pp = Parser.prototype
|
||||
|
||||
// Check if property name clashes with already added.
|
||||
// Object/class getters and setters are not allowed to clash —
|
||||
// either with each other or with an init property — and in
|
||||
// strict mode, init properties are also not allowed to be repeated.
|
||||
|
||||
pp.checkPropClash = function(prop, propHash) {
|
||||
if (this.options.ecmaVersion >= 6) return
|
||||
let key = prop.key, name
|
||||
switch (key.type) {
|
||||
case "Identifier": name = key.name; break
|
||||
case "Literal": name = String(key.value); break
|
||||
default: return
|
||||
}
|
||||
let kind = prop.kind || "init", other
|
||||
if (has(propHash, name)) {
|
||||
other = propHash[name]
|
||||
let isGetSet = kind !== "init"
|
||||
if ((this.strict || isGetSet) && other[kind] || !(isGetSet ^ other.init))
|
||||
this.raise(key.start, "Redefinition of property")
|
||||
} else {
|
||||
other = propHash[name] = {
|
||||
init: false,
|
||||
get: false,
|
||||
set: false
|
||||
}
|
||||
}
|
||||
other[kind] = true
|
||||
}
|
||||
|
||||
// ### Expression parsing
|
||||
|
||||
// These nest, from the most general expression type at the top to
|
||||
// 'atomic', nondivisible expression types at the bottom. Most of
|
||||
// the functions will simply let the function(s) below them parse,
|
||||
// and, *if* the syntactic construct they handle is present, wrap
|
||||
// the AST node that the inner parser gave them in another node.
|
||||
|
||||
// Parse a full expression. The optional arguments are used to
|
||||
// forbid the `in` operator (in for loops initalization expressions)
|
||||
// and provide reference for storing '=' operator inside shorthand
|
||||
// property assignment in contexts where both object expression
|
||||
// and object pattern might appear (so it's possible to raise
|
||||
// delayed syntax error at correct position).
|
||||
|
||||
pp.parseExpression = function(noIn, refShorthandDefaultPos) {
|
||||
let start = this.markPosition()
|
||||
let expr = this.parseMaybeAssign(noIn, refShorthandDefaultPos)
|
||||
if (this.type === tt.comma) {
|
||||
let node = this.startNodeAt(start)
|
||||
node.expressions = [expr]
|
||||
while (this.eat(tt.comma)) node.expressions.push(this.parseMaybeAssign(noIn, refShorthandDefaultPos))
|
||||
return this.finishNode(node, "SequenceExpression")
|
||||
}
|
||||
return expr
|
||||
}
|
||||
|
||||
// Parse an assignment expression. This includes applications of
|
||||
// operators like `+=`.
|
||||
|
||||
pp.parseMaybeAssign = function(noIn, refShorthandDefaultPos) {
|
||||
if (this.type == tt._yield && this.inGenerator) return this.parseYield()
|
||||
|
||||
let failOnShorthandAssign
|
||||
if (!refShorthandDefaultPos) {
|
||||
refShorthandDefaultPos = {start: 0}
|
||||
failOnShorthandAssign = true
|
||||
} else {
|
||||
failOnShorthandAssign = false
|
||||
}
|
||||
let start = this.markPosition()
|
||||
let left = this.parseMaybeConditional(noIn, refShorthandDefaultPos)
|
||||
if (this.type.isAssign) {
|
||||
let node = this.startNodeAt(start)
|
||||
node.operator = this.value
|
||||
node.left = this.type === tt.eq ? this.toAssignable(left) : left
|
||||
refShorthandDefaultPos.start = 0; // reset because shorthand default was used correctly
|
||||
this.checkLVal(left)
|
||||
this.next()
|
||||
node.right = this.parseMaybeAssign(noIn)
|
||||
return this.finishNode(node, "AssignmentExpression")
|
||||
} else if (failOnShorthandAssign && refShorthandDefaultPos.start) {
|
||||
this.unexpected(refShorthandDefaultPos.start)
|
||||
}
|
||||
return left
|
||||
}
|
||||
|
||||
// Parse a ternary conditional (`?:`) operator.
|
||||
|
||||
pp.parseMaybeConditional = function(noIn, refShorthandDefaultPos) {
|
||||
let start = this.markPosition()
|
||||
let expr = this.parseExprOps(noIn, refShorthandDefaultPos)
|
||||
if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr
|
||||
if (this.eat(tt.question)) {
|
||||
let node = this.startNodeAt(start)
|
||||
node.test = expr
|
||||
node.consequent = this.parseMaybeAssign()
|
||||
this.expect(tt.colon)
|
||||
node.alternate = this.parseMaybeAssign(noIn)
|
||||
return this.finishNode(node, "ConditionalExpression")
|
||||
}
|
||||
return expr
|
||||
}
|
||||
|
||||
// Start the precedence parser.
|
||||
|
||||
pp.parseExprOps = function(noIn, refShorthandDefaultPos) {
|
||||
let start = this.markPosition()
|
||||
let expr = this.parseMaybeUnary(refShorthandDefaultPos)
|
||||
if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr
|
||||
return this.parseExprOp(expr, start, -1, noIn)
|
||||
}
|
||||
|
||||
// Parse binary operators with the operator precedence parsing
|
||||
// algorithm. `left` is the left-hand side of the operator.
|
||||
// `minPrec` provides context that allows the function to stop and
|
||||
// defer further parser to one of its callers when it encounters an
|
||||
// operator that has a lower precedence than the set it is parsing.
|
||||
|
||||
pp.parseExprOp = function(left, leftStart, minPrec, noIn) {
|
||||
let prec = this.type.binop
|
||||
if (prec != null && (!noIn || this.type !== tt._in)) {
|
||||
if (prec > minPrec) {
|
||||
let node = this.startNodeAt(leftStart)
|
||||
node.left = left
|
||||
node.operator = this.value
|
||||
let op = this.type
|
||||
this.next()
|
||||
let start = this.markPosition()
|
||||
node.right = this.parseExprOp(this.parseMaybeUnary(), start, op.rightAssociative ? (prec - 1) : prec, noIn)
|
||||
this.finishNode(node, (op === tt.logicalOR || op === tt.logicalAND) ? "LogicalExpression" : "BinaryExpression")
|
||||
return this.parseExprOp(node, leftStart, minPrec, noIn)
|
||||
}
|
||||
}
|
||||
return left
|
||||
}
|
||||
|
||||
// Parse unary operators, both prefix and postfix.
|
||||
|
||||
pp.parseMaybeUnary = function(refShorthandDefaultPos) {
|
||||
if (this.type.prefix) {
|
||||
let node = this.startNode(), update = this.type === tt.incDec
|
||||
node.operator = this.value
|
||||
node.prefix = true
|
||||
this.next()
|
||||
node.argument = this.parseMaybeUnary()
|
||||
if (refShorthandDefaultPos && refShorthandDefaultPos.start) this.unexpected(refShorthandDefaultPos.start)
|
||||
if (update) this.checkLVal(node.argument)
|
||||
else if (this.strict && node.operator === "delete" &&
|
||||
node.argument.type === "Identifier")
|
||||
this.raise(node.start, "Deleting local variable in strict mode")
|
||||
return this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression")
|
||||
}
|
||||
let start = this.markPosition()
|
||||
let expr = this.parseExprSubscripts(refShorthandDefaultPos)
|
||||
if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr
|
||||
while (this.type.postfix && !this.canInsertSemicolon()) {
|
||||
let node = this.startNodeAt(start)
|
||||
node.operator = this.value
|
||||
node.prefix = false
|
||||
node.argument = expr
|
||||
this.checkLVal(expr)
|
||||
this.next()
|
||||
expr = this.finishNode(node, "UpdateExpression")
|
||||
}
|
||||
return expr
|
||||
}
|
||||
|
||||
// Parse call, dot, and `[]`-subscript expressions.
|
||||
|
||||
pp.parseExprSubscripts = function(refShorthandDefaultPos) {
|
||||
let start = this.markPosition()
|
||||
let expr = this.parseExprAtom(refShorthandDefaultPos)
|
||||
if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr
|
||||
return this.parseSubscripts(expr, start)
|
||||
}
|
||||
|
||||
pp.parseSubscripts = function(base, start, noCalls) {
|
||||
if (this.eat(tt.dot)) {
|
||||
let node = this.startNodeAt(start)
|
||||
node.object = base
|
||||
node.property = this.parseIdent(true)
|
||||
node.computed = false
|
||||
return this.parseSubscripts(this.finishNode(node, "MemberExpression"), start, noCalls)
|
||||
} else if (this.eat(tt.bracketL)) {
|
||||
let node = this.startNodeAt(start)
|
||||
node.object = base
|
||||
node.property = this.parseExpression()
|
||||
node.computed = true
|
||||
this.expect(tt.bracketR)
|
||||
return this.parseSubscripts(this.finishNode(node, "MemberExpression"), start, noCalls)
|
||||
} else if (!noCalls && this.eat(tt.parenL)) {
|
||||
let node = this.startNodeAt(start)
|
||||
node.callee = base
|
||||
node.arguments = this.parseExprList(tt.parenR, false)
|
||||
return this.parseSubscripts(this.finishNode(node, "CallExpression"), start, noCalls)
|
||||
} else if (this.type === tt.backQuote) {
|
||||
let node = this.startNodeAt(start)
|
||||
node.tag = base
|
||||
node.quasi = this.parseTemplate()
|
||||
return this.parseSubscripts(this.finishNode(node, "TaggedTemplateExpression"), start, noCalls)
|
||||
} return base
|
||||
}
|
||||
|
||||
// Parse an atomic expression — either a single token that is an
|
||||
// expression, an expression started by a keyword like `function` or
|
||||
// `new`, or an expression wrapped in punctuation like `()`, `[]`,
|
||||
// or `{}`.
|
||||
|
||||
pp.parseExprAtom = function(refShorthandDefaultPos) {
|
||||
let node
|
||||
switch (this.type) {
|
||||
case tt._this:
|
||||
case tt._super:
|
||||
let type = this.type === tt._this ? "ThisExpression" : "Super"
|
||||
node = this.startNode()
|
||||
this.next()
|
||||
return this.finishNode(node, type)
|
||||
|
||||
case tt._yield:
|
||||
if (this.inGenerator) unexpected()
|
||||
|
||||
case tt.name:
|
||||
let start = this.markPosition()
|
||||
let id = this.parseIdent(this.type !== tt.name)
|
||||
if (!this.canInsertSemicolon() && this.eat(tt.arrow)) {
|
||||
return this.parseArrowExpression(this.startNodeAt(start), [id])
|
||||
}
|
||||
return id
|
||||
|
||||
case tt.regexp:
|
||||
let value = this.value
|
||||
node = this.parseLiteral(value.value)
|
||||
node.regex = {pattern: value.pattern, flags: value.flags}
|
||||
return node
|
||||
|
||||
case tt.num: case tt.string:
|
||||
return this.parseLiteral(this.value)
|
||||
|
||||
case tt._null: case tt._true: case tt._false:
|
||||
node = this.startNode()
|
||||
node.value = this.type === tt._null ? null : this.type === tt._true
|
||||
node.raw = this.type.keyword
|
||||
this.next()
|
||||
return this.finishNode(node, "Literal")
|
||||
|
||||
case tt.parenL:
|
||||
return this.parseParenAndDistinguishExpression()
|
||||
|
||||
case tt.bracketL:
|
||||
node = this.startNode()
|
||||
this.next()
|
||||
// check whether this is array comprehension or regular array
|
||||
if ((this.options.ecmaVersion >= 7 || this.option.features["es7.comprehensions"]) && this.type === tt._for) {
|
||||
return this.parseComprehension(node, false)
|
||||
}
|
||||
node.elements = this.parseExprList(tt.bracketR, true, true, refShorthandDefaultPos)
|
||||
return this.finishNode(node, "ArrayExpression")
|
||||
|
||||
case tt.braceL:
|
||||
return this.parseObj(false, refShorthandDefaultPos)
|
||||
|
||||
case tt._function:
|
||||
node = this.startNode()
|
||||
this.next()
|
||||
return this.parseFunction(node, false)
|
||||
|
||||
case tt._class:
|
||||
return this.parseClass(this.startNode(), false)
|
||||
|
||||
case tt._new:
|
||||
return this.parseNew()
|
||||
|
||||
case tt.backQuote:
|
||||
return this.parseTemplate()
|
||||
|
||||
default:
|
||||
this.unexpected()
|
||||
}
|
||||
}
|
||||
|
||||
pp.parseLiteral = function(value) {
|
||||
let node = this.startNode()
|
||||
node.value = value
|
||||
node.raw = this.input.slice(this.start, this.end)
|
||||
this.next()
|
||||
return this.finishNode(node, "Literal")
|
||||
}
|
||||
|
||||
pp.parseParenExpression = function() {
|
||||
this.expect(tt.parenL)
|
||||
let val = this.parseExpression()
|
||||
this.expect(tt.parenR)
|
||||
return val
|
||||
}
|
||||
|
||||
pp.parseParenAndDistinguishExpression = function(start, isAsync) {
|
||||
start = start || this.markPosition()
|
||||
var val
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
this.next()
|
||||
|
||||
if ((this.options.features["es7.comprehensions"] || this.options.ecmaVersion >= 7) && this.type === tt._for) {
|
||||
return this.parseComprehension(this.startNodeAt(start), true)
|
||||
}
|
||||
|
||||
var innerStart = this.markPosition(), exprList = [], first = true
|
||||
var refShorthandDefaultPos = {start: 0}, spreadStart, innerParenStart
|
||||
while (this.type !== tt.parenR) {
|
||||
first ? first = false : this.expect(tt.comma)
|
||||
if (this.type === tt.ellipsis) {
|
||||
var spreadNodeStart = this.markPosition()
|
||||
spreadStart = this.start
|
||||
exprList.push(this.parseParenItem(this.parseRest(), spreadNodeStart))
|
||||
break
|
||||
} else {
|
||||
if (this.type === tt.parenL && !innerParenStart) {
|
||||
innerParenStart = this.start
|
||||
}
|
||||
exprList.push(this.parseMaybeAssign(false, refShorthandDefaultPos, this.parseParenItem))
|
||||
}
|
||||
}
|
||||
var innerEnd = this.markPosition()
|
||||
this.expect(tt.parenR)
|
||||
|
||||
if (!this.canInsertSemicolon() && this.eat(tt.arrow)) {
|
||||
if (innerParenStart) this.unexpected(innerParenStart)
|
||||
return this.parseParenArrowList(start, exprList, isAsync)
|
||||
}
|
||||
|
||||
if (!exprList.length) this.unexpected(this.lastTokStart)
|
||||
if (spreadStart) this.unexpected(spreadStart)
|
||||
if (refShorthandDefaultPos.start) this.unexpected(refShorthandDefaultPos.start)
|
||||
|
||||
if (exprList.length > 1) {
|
||||
val = this.startNodeAt(innerStart)
|
||||
val.expressions = exprList
|
||||
this.finishNodeAt(val, "SequenceExpression", innerEnd)
|
||||
} else {
|
||||
val = exprList[0]
|
||||
}
|
||||
} else {
|
||||
val = this.parseParenExpression()
|
||||
}
|
||||
|
||||
if (this.options.preserveParens) {
|
||||
var par = this.startNodeAt(start)
|
||||
par.expression = val
|
||||
return this.finishNode(par, "ParenthesizedExpression")
|
||||
} else {
|
||||
return val
|
||||
}
|
||||
}
|
||||
|
||||
pp.parseParenArrowList = function (start, exprList, isAsync) {
|
||||
return this.parseArrowExpression(this.startNodeAt(start), exprList, isAsync)
|
||||
}
|
||||
|
||||
pp.parseParenItem = function (node, start) {
|
||||
return node
|
||||
}
|
||||
|
||||
// New's precedence is slightly tricky. It must allow its argument
|
||||
// to be a `[]` or dot subscript expression, but not a call — at
|
||||
// least, not without wrapping it in parentheses. Thus, it uses the
|
||||
|
||||
const empty = []
|
||||
|
||||
pp.parseNew = function() {
|
||||
let node = this.startNode()
|
||||
let meta = this.parseIdent(true)
|
||||
if (this.options.ecmaVersion >= 6 && this.eat(tt.dot)) {
|
||||
node.meta = meta
|
||||
node.property = this.parseIdent(true)
|
||||
if (node.property.name !== "target")
|
||||
this.raise(node.property.start, "The only valid meta property for new is new.target")
|
||||
return this.finishNode(node, "MetaProperty")
|
||||
}
|
||||
let start = this.markPosition()
|
||||
node.callee = this.parseSubscripts(this.parseExprAtom(), start, true)
|
||||
if (this.eat(tt.parenL)) node.arguments = this.parseExprList(tt.parenR, false)
|
||||
else node.arguments = empty
|
||||
return this.finishNode(node, "NewExpression")
|
||||
}
|
||||
|
||||
// Parse template expression.
|
||||
|
||||
pp.parseTemplateElement = function() {
|
||||
let elem = this.startNode()
|
||||
elem.value = {
|
||||
raw: this.input.slice(this.start, this.end),
|
||||
cooked: this.value
|
||||
}
|
||||
this.next()
|
||||
elem.tail = this.type === tt.backQuote
|
||||
return this.finishNode(elem, "TemplateElement")
|
||||
}
|
||||
|
||||
pp.parseTemplate = function() {
|
||||
let node = this.startNode()
|
||||
this.next()
|
||||
node.expressions = []
|
||||
let curElt = this.parseTemplateElement()
|
||||
node.quasis = [curElt]
|
||||
while (!curElt.tail) {
|
||||
this.expect(tt.dollarBraceL)
|
||||
node.expressions.push(this.parseExpression())
|
||||
this.expect(tt.braceR)
|
||||
node.quasis.push(curElt = this.parseTemplateElement())
|
||||
}
|
||||
this.next()
|
||||
return this.finishNode(node, "TemplateLiteral")
|
||||
}
|
||||
|
||||
// Parse an object literal or binding pattern.
|
||||
|
||||
pp.parseObj = function(isPattern, refShorthandDefaultPos) {
|
||||
let node = this.startNode(), first = true, propHash = {}
|
||||
node.properties = []
|
||||
this.next()
|
||||
while (!this.eat(tt.braceR)) {
|
||||
if (!first) {
|
||||
this.expect(tt.comma)
|
||||
if (this.afterTrailingComma(tt.braceR)) break
|
||||
} else first = false
|
||||
|
||||
let prop = this.startNode(), isGenerator, start
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
prop.method = false
|
||||
prop.shorthand = false
|
||||
if (isPattern || refShorthandDefaultPos)
|
||||
start = this.markPosition()
|
||||
if (!isPattern)
|
||||
isGenerator = this.eat(tt.star)
|
||||
}
|
||||
this.parsePropertyName(prop)
|
||||
if (this.eat(tt.colon)) {
|
||||
prop.value = isPattern ? this.parseMaybeDefault() : this.parseMaybeAssign(false, refShorthandDefaultPos)
|
||||
prop.kind = "init"
|
||||
} else if (this.options.ecmaVersion >= 6 && this.type === tt.parenL) {
|
||||
if (isPattern) this.unexpected()
|
||||
prop.kind = "init"
|
||||
prop.method = true
|
||||
prop.value = this.parseMethod(isGenerator)
|
||||
} else if (this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" &&
|
||||
(prop.key.name === "get" || prop.key.name === "set") &&
|
||||
(this.type != tt.comma && this.type != tt.braceR)) {
|
||||
if (isGenerator || isPattern) this.unexpected()
|
||||
prop.kind = prop.key.name
|
||||
this.parsePropertyName(prop)
|
||||
prop.value = this.parseMethod(false)
|
||||
} else if (this.options.ecmaVersion >= 6 && !prop.computed && prop.key.type === "Identifier") {
|
||||
prop.kind = "init"
|
||||
if (isPattern) {
|
||||
if (this.isKeyword(prop.key.name) ||
|
||||
(this.strict && (reservedWords.strictBind(prop.key.name) || reservedWords.strict(prop.key.name))) ||
|
||||
(!this.options.allowReserved && this.isReservedWord(prop.key.name)))
|
||||
this.raise(prop.key.start, "Binding " + prop.key.name)
|
||||
prop.value = this.parseMaybeDefault(start, prop.key)
|
||||
} else if (this.type === tt.eq && refShorthandDefaultPos) {
|
||||
if (!refShorthandDefaultPos.start)
|
||||
refShorthandDefaultPos.start = this.start
|
||||
prop.value = this.parseMaybeDefault(start, prop.key)
|
||||
} else {
|
||||
prop.value = prop.key
|
||||
}
|
||||
prop.shorthand = true
|
||||
} else this.unexpected()
|
||||
|
||||
this.checkPropClash(prop, propHash)
|
||||
node.properties.push(this.finishNode(prop, "Property"))
|
||||
}
|
||||
return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression")
|
||||
}
|
||||
|
||||
pp.parsePropertyName = function(prop) {
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
if (this.eat(tt.bracketL)) {
|
||||
prop.computed = true
|
||||
prop.key = this.parseMaybeAssign()
|
||||
this.expect(tt.bracketR)
|
||||
return
|
||||
} else {
|
||||
prop.computed = false
|
||||
}
|
||||
}
|
||||
prop.key = (this.type === tt.num || this.type === tt.string) ? this.parseExprAtom() : this.parseIdent(true)
|
||||
}
|
||||
|
||||
// Initialize empty function node.
|
||||
|
||||
pp.initFunction = function(node) {
|
||||
node.id = null
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
node.generator = false
|
||||
node.expression = false
|
||||
}
|
||||
}
|
||||
|
||||
// Parse object or class method.
|
||||
|
||||
pp.parseMethod = function(isGenerator) {
|
||||
let node = this.startNode()
|
||||
this.initFunction(node)
|
||||
this.expect(tt.parenL)
|
||||
node.params = this.parseBindingList(tt.parenR, false, false)
|
||||
let allowExpressionBody
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
node.generator = isGenerator
|
||||
allowExpressionBody = true
|
||||
} else {
|
||||
allowExpressionBody = false
|
||||
}
|
||||
this.parseFunctionBody(node, allowExpressionBody)
|
||||
return this.finishNode(node, "FunctionExpression")
|
||||
}
|
||||
|
||||
// Parse arrow function expression with given parameters.
|
||||
|
||||
pp.parseArrowExpression = function(node, params) {
|
||||
this.initFunction(node)
|
||||
node.params = this.toAssignableList(params, true)
|
||||
this.parseFunctionBody(node, true)
|
||||
return this.finishNode(node, "ArrowFunctionExpression")
|
||||
}
|
||||
|
||||
// Parse function body and check parameters.
|
||||
|
||||
pp.parseFunctionBody = function(node, allowExpression) {
|
||||
let isExpression = allowExpression && this.type !== tt.braceL
|
||||
|
||||
if (isExpression) {
|
||||
node.body = this.parseMaybeAssign()
|
||||
node.expression = true
|
||||
} else {
|
||||
// Start a new scope with regard to labels and the `inFunction`
|
||||
// flag (restore them to their old value afterwards).
|
||||
let oldInFunc = this.inFunction, oldInGen = this.inGenerator, oldLabels = this.labels
|
||||
this.inFunction = true; this.inGenerator = node.generator; this.labels = []
|
||||
node.body = this.parseBlock(true)
|
||||
node.expression = false
|
||||
this.inFunction = oldInFunc; this.inGenerator = oldInGen; this.labels = oldLabels
|
||||
}
|
||||
|
||||
// If this is a strict mode function, verify that argument names
|
||||
// are not repeated, and it does not try to bind the words `eval`
|
||||
// or `arguments`.
|
||||
if (this.strict || !isExpression && node.body.body.length && this.isUseStrict(node.body.body[0])) {
|
||||
let nameHash = {}, oldStrict = this.strict
|
||||
this.strict = true
|
||||
if (node.id)
|
||||
this.checkLVal(node.id, true)
|
||||
for (let i = 0; i < node.params.length; i++)
|
||||
this.checkLVal(node.params[i], true, nameHash)
|
||||
this.strict = oldStrict
|
||||
}
|
||||
}
|
||||
|
||||
// Parses a comma-separated list of expressions, and returns them as
|
||||
// an array. `close` is the token type that ends the list, and
|
||||
// `allowEmpty` can be turned on to allow subsequent commas with
|
||||
// nothing in between them to be parsed as `null` (which is needed
|
||||
// for array literals).
|
||||
|
||||
pp.parseExprList = function(close, allowTrailingComma, allowEmpty, refShorthandDefaultPos) {
|
||||
let elts = [], first = true
|
||||
while (!this.eat(close)) {
|
||||
if (!first) {
|
||||
this.expect(tt.comma)
|
||||
if (allowTrailingComma && this.afterTrailingComma(close)) break
|
||||
} else first = false
|
||||
|
||||
if (allowEmpty && this.type === tt.comma) {
|
||||
elts.push(null)
|
||||
} else {
|
||||
if (this.type === tt.ellipsis)
|
||||
elts.push(this.parseSpread(refShorthandDefaultPos))
|
||||
else
|
||||
elts.push(this.parseMaybeAssign(false, refShorthandDefaultPos))
|
||||
}
|
||||
}
|
||||
return elts
|
||||
}
|
||||
|
||||
// Parse the next token as an identifier. If `liberal` is true (used
|
||||
// when parsing properties), it will also convert keywords into
|
||||
// identifiers.
|
||||
|
||||
pp.parseIdent = function(liberal) {
|
||||
let node = this.startNode()
|
||||
if (liberal && this.options.allowReserved == "never") liberal = false
|
||||
if (this.type === tt.name) {
|
||||
if (!liberal &&
|
||||
((!this.options.allowReserved && this.isReservedWord(this.value)) ||
|
||||
(this.strict && reservedWords.strict(this.value)) &&
|
||||
(this.options.ecmaVersion >= 6 ||
|
||||
this.input.slice(this.start, this.end).indexOf("\\") == -1)))
|
||||
this.raise(this.start, "The keyword '" + this.value + "' is reserved")
|
||||
node.name = this.value
|
||||
} else if (liberal && this.type.keyword) {
|
||||
node.name = this.type.keyword
|
||||
} else {
|
||||
this.unexpected()
|
||||
}
|
||||
this.next()
|
||||
return this.finishNode(node, "Identifier")
|
||||
}
|
||||
|
||||
// Parses yield expression inside generator.
|
||||
|
||||
pp.parseYield = function() {
|
||||
let node = this.startNode()
|
||||
this.next()
|
||||
if (this.type == tt.semi || this.canInsertSemicolon() || (this.type != tt.star && !this.type.startsExpr)) {
|
||||
node.delegate = false
|
||||
node.argument = null
|
||||
} else {
|
||||
node.delegate = this.eat(tt.star)
|
||||
node.argument = this.parseMaybeAssign()
|
||||
}
|
||||
return this.finishNode(node, "YieldExpression")
|
||||
}
|
||||
|
||||
// Parses array and generator comprehensions.
|
||||
|
||||
pp.parseComprehension = function(node, isGenerator) {
|
||||
node.blocks = []
|
||||
while (this.type === tt._for) {
|
||||
let block = this.startNode()
|
||||
this.next()
|
||||
this.expect(tt.parenL)
|
||||
block.left = this.parseBindingAtom()
|
||||
this.checkLVal(block.left, true)
|
||||
this.expectContextual("of")
|
||||
block.right = this.parseExpression()
|
||||
this.expect(tt.parenR)
|
||||
node.blocks.push(this.finishNode(block, "ComprehensionBlock"))
|
||||
}
|
||||
node.filter = this.eat(tt._if) ? this.parseParenExpression() : null
|
||||
node.body = this.parseExpression()
|
||||
this.expect(isGenerator ? tt.parenR : tt.bracketR)
|
||||
node.generator = isGenerator
|
||||
return this.finishNode(node, "ComprehensionExpression")
|
||||
}
|
||||
@ -1,744 +0,0 @@
|
||||
// A recursive descent parser operates by defining functions for all
|
||||
// syntactic elements, and recursively calling those, each function
|
||||
// advancing the input stream and returning an AST node. Precedence
|
||||
// of constructs (for example, the fact that `!x[1]` means `!(x[1])`
|
||||
// instead of `(!x)[1]` is handled by the fact that the parser
|
||||
// function that parses unary prefix operators is called first, and
|
||||
// in turn calls the function that parses `[]` subscripts — that
|
||||
// way, it'll receive the node for `x[1]` already parsed, and wraps
|
||||
// *that* in the unary operator node.
|
||||
//
|
||||
// Acorn uses an [operator precedence parser][opp] to handle binary
|
||||
// operator precedence, because it is much more compact than using
|
||||
// the technique outlined above, which uses different, nesting
|
||||
// functions to specify precedence, for all of the ten binary
|
||||
// precedence levels that JavaScript defines.
|
||||
//
|
||||
// [opp]: http://en.wikipedia.org/wiki/Operator-precedence_parser
|
||||
|
||||
"use strict";
|
||||
|
||||
var tt = require("./tokentype").types;
|
||||
|
||||
var Parser = require("./state").Parser;
|
||||
|
||||
var reservedWords = require("./identifier").reservedWords;
|
||||
|
||||
var has = require("./util").has;
|
||||
|
||||
var pp = Parser.prototype;
|
||||
|
||||
// Check if property name clashes with already added.
|
||||
// Object/class getters and setters are not allowed to clash —
|
||||
// either with each other or with an init property — and in
|
||||
// strict mode, init properties are also not allowed to be repeated.
|
||||
|
||||
pp.checkPropClash = function (prop, propHash) {
|
||||
if (this.options.ecmaVersion >= 6) return;
|
||||
var key = prop.key,
|
||||
name = undefined;
|
||||
switch (key.type) {
|
||||
case "Identifier":
|
||||
name = key.name;break;
|
||||
case "Literal":
|
||||
name = String(key.value);break;
|
||||
default:
|
||||
return;
|
||||
}
|
||||
var kind = prop.kind || "init",
|
||||
other = undefined;
|
||||
if (has(propHash, name)) {
|
||||
other = propHash[name];
|
||||
var isGetSet = kind !== "init";
|
||||
if ((this.strict || isGetSet) && other[kind] || !(isGetSet ^ other.init)) this.raise(key.start, "Redefinition of property");
|
||||
} else {
|
||||
other = propHash[name] = {
|
||||
init: false,
|
||||
get: false,
|
||||
set: false
|
||||
};
|
||||
}
|
||||
other[kind] = true;
|
||||
};
|
||||
|
||||
// ### Expression parsing
|
||||
|
||||
// These nest, from the most general expression type at the top to
|
||||
// 'atomic', nondivisible expression types at the bottom. Most of
|
||||
// the functions will simply let the function(s) below them parse,
|
||||
// and, *if* the syntactic construct they handle is present, wrap
|
||||
// the AST node that the inner parser gave them in another node.
|
||||
|
||||
// Parse a full expression. The optional arguments are used to
|
||||
// forbid the `in` operator (in for loops initalization expressions)
|
||||
// and provide reference for storing '=' operator inside shorthand
|
||||
// property assignment in contexts where both object expression
|
||||
// and object pattern might appear (so it's possible to raise
|
||||
// delayed syntax error at correct position).
|
||||
|
||||
pp.parseExpression = function (noIn, refShorthandDefaultPos) {
|
||||
var start = this.markPosition();
|
||||
var expr = this.parseMaybeAssign(noIn, refShorthandDefaultPos);
|
||||
if (this.type === tt.comma) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.expressions = [expr];
|
||||
while (this.eat(tt.comma)) node.expressions.push(this.parseMaybeAssign(noIn, refShorthandDefaultPos));
|
||||
return this.finishNode(node, "SequenceExpression");
|
||||
}
|
||||
return expr;
|
||||
};
|
||||
|
||||
// Parse an assignment expression. This includes applications of
|
||||
// operators like `+=`.
|
||||
|
||||
pp.parseMaybeAssign = function (noIn, refShorthandDefaultPos, afterLeftParse) {
|
||||
if (this.type == tt._yield && this.inGenerator) return this.parseYield();
|
||||
|
||||
var failOnShorthandAssign = undefined;
|
||||
if (!refShorthandDefaultPos) {
|
||||
refShorthandDefaultPos = { start: 0 };
|
||||
failOnShorthandAssign = true;
|
||||
} else {
|
||||
failOnShorthandAssign = false;
|
||||
}
|
||||
var start = this.markPosition();
|
||||
var left = this.parseMaybeConditional(noIn, refShorthandDefaultPos);
|
||||
if (afterLeftParse) left = afterLeftParse.call(this, left, start);
|
||||
if (this.type.isAssign) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.operator = this.value;
|
||||
node.left = this.type === tt.eq ? this.toAssignable(left) : left;
|
||||
refShorthandDefaultPos.start = 0; // reset because shorthand default was used correctly
|
||||
this.checkLVal(left);
|
||||
this.next();
|
||||
node.right = this.parseMaybeAssign(noIn);
|
||||
return this.finishNode(node, "AssignmentExpression");
|
||||
} else if (failOnShorthandAssign && refShorthandDefaultPos.start) {
|
||||
this.unexpected(refShorthandDefaultPos.start);
|
||||
}
|
||||
return left;
|
||||
};
|
||||
|
||||
// Parse a ternary conditional (`?:`) operator.
|
||||
|
||||
pp.parseMaybeConditional = function (noIn, refShorthandDefaultPos) {
|
||||
var start = this.markPosition();
|
||||
var expr = this.parseExprOps(noIn, refShorthandDefaultPos);
|
||||
if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr;
|
||||
if (this.eat(tt.question)) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.test = expr;
|
||||
node.consequent = this.parseMaybeAssign();
|
||||
this.expect(tt.colon);
|
||||
node.alternate = this.parseMaybeAssign(noIn);
|
||||
return this.finishNode(node, "ConditionalExpression");
|
||||
}
|
||||
return expr;
|
||||
};
|
||||
|
||||
// Start the precedence parser.
|
||||
|
||||
pp.parseExprOps = function (noIn, refShorthandDefaultPos) {
|
||||
var start = this.markPosition();
|
||||
var expr = this.parseMaybeUnary(refShorthandDefaultPos);
|
||||
if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr;
|
||||
return this.parseExprOp(expr, start, -1, noIn);
|
||||
};
|
||||
|
||||
// Parse binary operators with the operator precedence parsing
|
||||
// algorithm. `left` is the left-hand side of the operator.
|
||||
// `minPrec` provides context that allows the function to stop and
|
||||
// defer further parser to one of its callers when it encounters an
|
||||
// operator that has a lower precedence than the set it is parsing.
|
||||
|
||||
pp.parseExprOp = function (left, leftStart, minPrec, noIn) {
|
||||
var prec = this.type.binop;
|
||||
if (prec != null && (!noIn || this.type !== tt._in)) {
|
||||
if (prec > minPrec) {
|
||||
var node = this.startNodeAt(leftStart);
|
||||
node.left = left;
|
||||
node.operator = this.value;
|
||||
var op = this.type;
|
||||
this.next();
|
||||
var start = this.markPosition();
|
||||
node.right = this.parseExprOp(this.parseMaybeUnary(), start, op.rightAssociative ? prec - 1 : prec, noIn);
|
||||
this.finishNode(node, op === tt.logicalOR || op === tt.logicalAND ? "LogicalExpression" : "BinaryExpression");
|
||||
return this.parseExprOp(node, leftStart, minPrec, noIn);
|
||||
}
|
||||
}
|
||||
return left;
|
||||
};
|
||||
|
||||
// Parse unary operators, both prefix and postfix.
|
||||
|
||||
pp.parseMaybeUnary = function (refShorthandDefaultPos) {
|
||||
if (this.type.prefix) {
|
||||
var node = this.startNode(),
|
||||
update = this.type === tt.incDec;
|
||||
node.operator = this.value;
|
||||
node.prefix = true;
|
||||
this.next();
|
||||
node.argument = this.parseMaybeUnary();
|
||||
if (refShorthandDefaultPos && refShorthandDefaultPos.start) this.unexpected(refShorthandDefaultPos.start);
|
||||
if (update) this.checkLVal(node.argument);else if (this.strict && node.operator === "delete" && node.argument.type === "Identifier") this.raise(node.start, "Deleting local variable in strict mode");
|
||||
return this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
|
||||
}
|
||||
var start = this.markPosition();
|
||||
var expr = this.parseExprSubscripts(refShorthandDefaultPos);
|
||||
if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr;
|
||||
while (this.type.postfix && !this.canInsertSemicolon()) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.operator = this.value;
|
||||
node.prefix = false;
|
||||
node.argument = expr;
|
||||
this.checkLVal(expr);
|
||||
this.next();
|
||||
expr = this.finishNode(node, "UpdateExpression");
|
||||
}
|
||||
return expr;
|
||||
};
|
||||
|
||||
// Parse call, dot, and `[]`-subscript expressions.
|
||||
|
||||
pp.parseExprSubscripts = function (refShorthandDefaultPos) {
|
||||
var start = this.markPosition();
|
||||
var expr = this.parseExprAtom(refShorthandDefaultPos);
|
||||
if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr;
|
||||
return this.parseSubscripts(expr, start);
|
||||
};
|
||||
|
||||
pp.parseSubscripts = function (base, start, noCalls) {
|
||||
if (this.eat(tt.dot)) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.object = base;
|
||||
node.property = this.parseIdent(true);
|
||||
node.computed = false;
|
||||
return this.parseSubscripts(this.finishNode(node, "MemberExpression"), start, noCalls);
|
||||
} else if (this.eat(tt.bracketL)) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.object = base;
|
||||
node.property = this.parseExpression();
|
||||
node.computed = true;
|
||||
this.expect(tt.bracketR);
|
||||
return this.parseSubscripts(this.finishNode(node, "MemberExpression"), start, noCalls);
|
||||
} else if (!noCalls && this.eat(tt.parenL)) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.callee = base;
|
||||
node.arguments = this.parseExprList(tt.parenR, false);
|
||||
return this.parseSubscripts(this.finishNode(node, "CallExpression"), start, noCalls);
|
||||
} else if (this.type === tt.backQuote) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.tag = base;
|
||||
node.quasi = this.parseTemplate();
|
||||
return this.parseSubscripts(this.finishNode(node, "TaggedTemplateExpression"), start, noCalls);
|
||||
}return base;
|
||||
};
|
||||
|
||||
// Parse an atomic expression — either a single token that is an
|
||||
// expression, an expression started by a keyword like `function` or
|
||||
// `new`, or an expression wrapped in punctuation like `()`, `[]`,
|
||||
// or `{}`.
|
||||
|
||||
pp.parseExprAtom = function (refShorthandDefaultPos) {
|
||||
var node = undefined;
|
||||
switch (this.type) {
|
||||
case tt._this:
|
||||
case tt._super:
|
||||
var type = this.type === tt._this ? "ThisExpression" : "Super";
|
||||
node = this.startNode();
|
||||
this.next();
|
||||
return this.finishNode(node, type);
|
||||
|
||||
case tt._yield:
|
||||
if (this.inGenerator) unexpected();
|
||||
|
||||
case tt.name:
|
||||
var start = this.markPosition();
|
||||
node = this.startNode();
|
||||
var id = this.parseIdent(this.type !== tt.name);
|
||||
|
||||
//
|
||||
if (this.options.features["es7.asyncFunctions"]) {
|
||||
// async functions!
|
||||
if (id.name === "async") {
|
||||
// arrow functions
|
||||
if (this.type === tt.parenL) {
|
||||
var expr = this.parseParenAndDistinguishExpression(start, true);
|
||||
if (expr.type === "ArrowFunctionExpression") {
|
||||
return expr;
|
||||
} else {
|
||||
node.callee = id;
|
||||
if (expr.type === "SequenceExpression") {
|
||||
node.arguments = expr.expressions;
|
||||
} else {
|
||||
node.arguments = [expr];
|
||||
}
|
||||
return this.parseSubscripts(this.finishNode(node, "CallExpression"), start);
|
||||
}
|
||||
} else if (this.type === tt.name) {
|
||||
id = this.parseIdent();
|
||||
this.expect(tt.arrow);
|
||||
return this.parseArrowExpression(node, [id], true);
|
||||
}
|
||||
|
||||
// normal functions
|
||||
if (this.type === tt._function && !this.canInsertSemicolon()) {
|
||||
this.next();
|
||||
return this.parseFunction(node, false, false, true);
|
||||
}
|
||||
} else if (id.name === "await") {
|
||||
if (this.inAsync) return this.parseAwait(node);
|
||||
}
|
||||
}
|
||||
//
|
||||
|
||||
if (!this.canInsertSemicolon() && this.eat(tt.arrow)) {
|
||||
return this.parseArrowExpression(this.startNodeAt(start), [id]);
|
||||
}
|
||||
return id;
|
||||
|
||||
case tt.regexp:
|
||||
var value = this.value;
|
||||
node = this.parseLiteral(value.value);
|
||||
node.regex = { pattern: value.pattern, flags: value.flags };
|
||||
return node;
|
||||
|
||||
case tt.num:case tt.string:
|
||||
return this.parseLiteral(this.value);
|
||||
|
||||
case tt._null:case tt._true:case tt._false:
|
||||
node = this.startNode();
|
||||
node.value = this.type === tt._null ? null : this.type === tt._true;
|
||||
node.raw = this.type.keyword;
|
||||
this.next();
|
||||
return this.finishNode(node, "Literal");
|
||||
|
||||
case tt.parenL:
|
||||
return this.parseParenAndDistinguishExpression();
|
||||
|
||||
case tt.bracketL:
|
||||
node = this.startNode();
|
||||
this.next();
|
||||
// check whether this is array comprehension or regular array
|
||||
if ((this.options.ecmaVersion >= 7 || this.options.features["es7.comprehensions"]) && this.type === tt._for) {
|
||||
return this.parseComprehension(node, false);
|
||||
}
|
||||
node.elements = this.parseExprList(tt.bracketR, true, true, refShorthandDefaultPos);
|
||||
return this.finishNode(node, "ArrayExpression");
|
||||
|
||||
case tt.braceL:
|
||||
return this.parseObj(false, refShorthandDefaultPos);
|
||||
|
||||
case tt._function:
|
||||
node = this.startNode();
|
||||
this.next();
|
||||
return this.parseFunction(node, false);
|
||||
|
||||
case tt._class:
|
||||
return this.parseClass(this.startNode(), false);
|
||||
|
||||
case tt._new:
|
||||
return this.parseNew();
|
||||
|
||||
case tt.backQuote:
|
||||
return this.parseTemplate();
|
||||
|
||||
default:
|
||||
this.unexpected();
|
||||
}
|
||||
};
|
||||
|
||||
pp.parseLiteral = function (value) {
|
||||
var node = this.startNode();
|
||||
node.value = value;
|
||||
node.raw = this.input.slice(this.start, this.end);
|
||||
this.next();
|
||||
return this.finishNode(node, "Literal");
|
||||
};
|
||||
|
||||
pp.parseParenExpression = function () {
|
||||
this.expect(tt.parenL);
|
||||
var val = this.parseExpression();
|
||||
this.expect(tt.parenR);
|
||||
return val;
|
||||
};
|
||||
|
||||
pp.parseParenAndDistinguishExpression = function (start, isAsync) {
|
||||
start = start || this.markPosition();
|
||||
var val = undefined;
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
this.next();
|
||||
|
||||
if ((this.options.features["es7.comprehensions"] || this.options.ecmaVersion >= 7) && this.type === tt._for) {
|
||||
return this.parseComprehension(this.startNodeAt(start), true);
|
||||
}
|
||||
|
||||
var innerStart = this.markPosition(),
|
||||
exprList = [],
|
||||
first = true;
|
||||
var refShorthandDefaultPos = { start: 0 },
|
||||
spreadStart = undefined,
|
||||
innerParenStart = undefined;
|
||||
while (this.type !== tt.parenR) {
|
||||
first ? first = false : this.expect(tt.comma);
|
||||
if (this.type === tt.ellipsis) {
|
||||
var spreadNodeStart = this.markPosition();
|
||||
spreadStart = this.start;
|
||||
exprList.push(this.parseParenItem(this.parseRest(), spreadNodeStart));
|
||||
break;
|
||||
} else {
|
||||
if (this.type === tt.parenL && !innerParenStart) {
|
||||
innerParenStart = this.start;
|
||||
}
|
||||
exprList.push(this.parseMaybeAssign(false, refShorthandDefaultPos, this.parseParenItem));
|
||||
}
|
||||
}
|
||||
var innerEnd = this.markPosition();
|
||||
this.expect(tt.parenR);
|
||||
|
||||
if (!this.canInsertSemicolon() && this.eat(tt.arrow)) {
|
||||
if (innerParenStart) this.unexpected(innerParenStart);
|
||||
return this.parseParenArrowList(start, exprList, isAsync);
|
||||
}
|
||||
|
||||
if (!exprList.length) this.unexpected(this.lastTokStart);
|
||||
if (spreadStart) this.unexpected(spreadStart);
|
||||
if (refShorthandDefaultPos.start) this.unexpected(refShorthandDefaultPos.start);
|
||||
|
||||
if (exprList.length > 1) {
|
||||
val = this.startNodeAt(innerStart);
|
||||
val.expressions = exprList;
|
||||
this.finishNodeAt(val, "SequenceExpression", innerEnd);
|
||||
} else {
|
||||
val = exprList[0];
|
||||
}
|
||||
} else {
|
||||
val = this.parseParenExpression();
|
||||
}
|
||||
|
||||
if (this.options.preserveParens) {
|
||||
var par = this.startNodeAt(start);
|
||||
par.expression = val;
|
||||
return this.finishNode(par, "ParenthesizedExpression");
|
||||
} else {
|
||||
return val;
|
||||
}
|
||||
};
|
||||
|
||||
pp.parseParenArrowList = function (start, exprList, isAsync) {
|
||||
return this.parseArrowExpression(this.startNodeAt(start), exprList, isAsync);
|
||||
};
|
||||
|
||||
pp.parseParenItem = function (node, start) {
|
||||
return node;
|
||||
};
|
||||
|
||||
// New's precedence is slightly tricky. It must allow its argument
|
||||
// to be a `[]` or dot subscript expression, but not a call — at
|
||||
// least, not without wrapping it in parentheses. Thus, it uses the
|
||||
|
||||
var empty = [];
|
||||
|
||||
pp.parseNew = function () {
|
||||
var node = this.startNode();
|
||||
var meta = this.parseIdent(true);
|
||||
if (this.options.ecmaVersion >= 6 && this.eat(tt.dot)) {
|
||||
node.meta = meta;
|
||||
node.property = this.parseIdent(true);
|
||||
if (node.property.name !== "target") this.raise(node.property.start, "The only valid meta property for new is new.target");
|
||||
return this.finishNode(node, "MetaProperty");
|
||||
}
|
||||
var start = this.markPosition();
|
||||
node.callee = this.parseSubscripts(this.parseExprAtom(), start, true);
|
||||
if (this.eat(tt.parenL)) node.arguments = this.parseExprList(tt.parenR, false);else node.arguments = empty;
|
||||
return this.finishNode(node, "NewExpression");
|
||||
};
|
||||
|
||||
// Parse template expression.
|
||||
|
||||
pp.parseTemplateElement = function () {
|
||||
var elem = this.startNode();
|
||||
elem.value = {
|
||||
raw: this.input.slice(this.start, this.end),
|
||||
cooked: this.value
|
||||
};
|
||||
this.next();
|
||||
elem.tail = this.type === tt.backQuote;
|
||||
return this.finishNode(elem, "TemplateElement");
|
||||
};
|
||||
|
||||
pp.parseTemplate = function () {
|
||||
var node = this.startNode();
|
||||
this.next();
|
||||
node.expressions = [];
|
||||
var curElt = this.parseTemplateElement();
|
||||
node.quasis = [curElt];
|
||||
while (!curElt.tail) {
|
||||
this.expect(tt.dollarBraceL);
|
||||
node.expressions.push(this.parseExpression());
|
||||
this.expect(tt.braceR);
|
||||
node.quasis.push(curElt = this.parseTemplateElement());
|
||||
}
|
||||
this.next();
|
||||
return this.finishNode(node, "TemplateLiteral");
|
||||
};
|
||||
|
||||
// Parse an object literal or binding pattern.
|
||||
|
||||
pp.parseObj = function (isPattern, refShorthandDefaultPos) {
|
||||
var node = this.startNode(),
|
||||
first = true,
|
||||
propHash = {};
|
||||
node.properties = [];
|
||||
this.next();
|
||||
while (!this.eat(tt.braceR)) {
|
||||
if (!first) {
|
||||
this.expect(tt.comma);
|
||||
if (this.afterTrailingComma(tt.braceR)) break;
|
||||
} else first = false;
|
||||
|
||||
var prop = this.startNode(),
|
||||
isGenerator = false,
|
||||
isAsync = false,
|
||||
start = undefined;
|
||||
if (this.options.features["es7.objectRestSpread"] && this.type === tt.ellipsis) {
|
||||
prop = this.parseSpread();
|
||||
prop.type = "SpreadProperty";
|
||||
node.properties.push(prop);
|
||||
continue;
|
||||
}
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
prop.method = false;
|
||||
prop.shorthand = false;
|
||||
if (isPattern || refShorthandDefaultPos) start = this.markPosition();
|
||||
if (!isPattern) isGenerator = this.eat(tt.star);
|
||||
}
|
||||
if (this.options.features["es7.asyncFunctions"] && this.isContextual("async")) {
|
||||
if (isGenerator || isPattern) this.unexpected();
|
||||
var asyncId = this.parseIdent();
|
||||
if (this.type === tt.colon || this.type === tt.parenL) {
|
||||
prop.key = asyncId;
|
||||
} else {
|
||||
isAsync = true;
|
||||
this.parsePropertyName(prop);
|
||||
}
|
||||
} else {
|
||||
this.parsePropertyName(prop);
|
||||
}
|
||||
this.parseObjPropValue(prop, start, isGenerator, isAsync, isPattern, refShorthandDefaultPos);
|
||||
this.checkPropClash(prop, propHash);
|
||||
node.properties.push(this.finishNode(prop, "Property"));
|
||||
}
|
||||
return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression");
|
||||
};
|
||||
|
||||
pp.parseObjPropValue = function (prop, start, isGenerator, isAsync, isPattern, refShorthandDefaultPos) {
|
||||
if (this.eat(tt.colon)) {
|
||||
prop.value = isPattern ? this.parseMaybeDefault() : this.parseMaybeAssign(false, refShorthandDefaultPos);
|
||||
prop.kind = "init";
|
||||
} else if (this.options.ecmaVersion >= 6 && this.type === tt.parenL) {
|
||||
if (isPattern) this.unexpected();
|
||||
prop.kind = "init";
|
||||
prop.method = true;
|
||||
prop.value = this.parseMethod(isGenerator, isAsync);
|
||||
} else if (this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" && (prop.key.name === "get" || prop.key.name === "set") && (this.type != tt.comma && this.type != tt.braceR)) {
|
||||
if (isGenerator || isAsync || isPattern) this.unexpected();
|
||||
prop.kind = prop.key.name;
|
||||
this.parsePropertyName(prop);
|
||||
prop.value = this.parseMethod(false);
|
||||
} else if (this.options.ecmaVersion >= 6 && !prop.computed && prop.key.type === "Identifier") {
|
||||
prop.kind = "init";
|
||||
if (isPattern) {
|
||||
if (this.isKeyword(prop.key.name) || this.strict && (reservedWords.strictBind(prop.key.name) || reservedWords.strict(prop.key.name)) || !this.options.allowReserved && this.isReservedWord(prop.key.name)) this.raise(prop.key.start, "Binding " + prop.key.name);
|
||||
prop.value = this.parseMaybeDefault(start, prop.key);
|
||||
} else if (this.type === tt.eq && refShorthandDefaultPos) {
|
||||
if (!refShorthandDefaultPos.start) refShorthandDefaultPos.start = this.start;
|
||||
prop.value = this.parseMaybeDefault(start, prop.key);
|
||||
} else {
|
||||
prop.value = prop.key;
|
||||
}
|
||||
prop.shorthand = true;
|
||||
} else this.unexpected();
|
||||
};
|
||||
|
||||
pp.parsePropertyName = function (prop) {
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
if (this.eat(tt.bracketL)) {
|
||||
prop.computed = true;
|
||||
prop.key = this.parseMaybeAssign();
|
||||
this.expect(tt.bracketR);
|
||||
return;
|
||||
} else {
|
||||
prop.computed = false;
|
||||
}
|
||||
}
|
||||
prop.key = this.type === tt.num || this.type === tt.string ? this.parseExprAtom() : this.parseIdent(true);
|
||||
};
|
||||
|
||||
// Initialize empty function node.
|
||||
|
||||
pp.initFunction = function (node, isAsync) {
|
||||
node.id = null;
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
node.generator = false;
|
||||
node.expression = false;
|
||||
}
|
||||
if (this.options.features["es7.asyncFunctions"]) {
|
||||
node.async = !!isAsync;
|
||||
}
|
||||
};
|
||||
|
||||
// Parse object or class method.
|
||||
|
||||
pp.parseMethod = function (isGenerator, isAsync) {
|
||||
var node = this.startNode();
|
||||
this.initFunction(node, isAsync);
|
||||
this.expect(tt.parenL);
|
||||
node.params = this.parseBindingList(tt.parenR, false, false);
|
||||
var allowExpressionBody = undefined;
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
node.generator = isGenerator;
|
||||
allowExpressionBody = true;
|
||||
} else {
|
||||
allowExpressionBody = false;
|
||||
}
|
||||
this.parseFunctionBody(node, allowExpressionBody);
|
||||
return this.finishNode(node, "FunctionExpression");
|
||||
};
|
||||
|
||||
// Parse arrow function expression with given parameters.
|
||||
|
||||
pp.parseArrowExpression = function (node, params, isAsync) {
|
||||
this.initFunction(node, isAsync);
|
||||
node.params = this.toAssignableList(params, true);
|
||||
this.parseFunctionBody(node, true);
|
||||
return this.finishNode(node, "ArrowFunctionExpression");
|
||||
};
|
||||
|
||||
// Parse function body and check parameters.
|
||||
|
||||
pp.parseFunctionBody = function (node, allowExpression) {
|
||||
var isExpression = allowExpression && this.type !== tt.braceL;
|
||||
|
||||
var oldInAsync = this.inAsync;
|
||||
this.inAsync = node.async;
|
||||
if (isExpression) {
|
||||
node.body = this.parseMaybeAssign();
|
||||
node.expression = true;
|
||||
} else {
|
||||
// Start a new scope with regard to labels and the `inFunction`
|
||||
// flag (restore them to their old value afterwards).
|
||||
var oldInFunc = this.inFunction,
|
||||
oldInGen = this.inGenerator,
|
||||
oldLabels = this.labels;
|
||||
this.inFunction = true;this.inGenerator = node.generator;this.labels = [];
|
||||
node.body = this.parseBlock(true);
|
||||
node.expression = false;
|
||||
this.inFunction = oldInFunc;this.inGenerator = oldInGen;this.labels = oldLabels;
|
||||
}
|
||||
this.inAsync = oldInAsync;
|
||||
|
||||
// If this is a strict mode function, verify that argument names
|
||||
// are not repeated, and it does not try to bind the words `eval`
|
||||
// or `arguments`.
|
||||
if (this.strict || !isExpression && node.body.body.length && this.isUseStrict(node.body.body[0])) {
|
||||
var nameHash = {},
|
||||
oldStrict = this.strict;
|
||||
this.strict = true;
|
||||
if (node.id) this.checkLVal(node.id, true);
|
||||
for (var i = 0; i < node.params.length; i++) {
|
||||
this.checkLVal(node.params[i], true, nameHash);
|
||||
}this.strict = oldStrict;
|
||||
}
|
||||
};
|
||||
|
||||
// Parses a comma-separated list of expressions, and returns them as
|
||||
// an array. `close` is the token type that ends the list, and
|
||||
// `allowEmpty` can be turned on to allow subsequent commas with
|
||||
// nothing in between them to be parsed as `null` (which is needed
|
||||
// for array literals).
|
||||
|
||||
pp.parseExprList = function (close, allowTrailingComma, allowEmpty, refShorthandDefaultPos) {
|
||||
var elts = [],
|
||||
first = true;
|
||||
while (!this.eat(close)) {
|
||||
if (!first) {
|
||||
this.expect(tt.comma);
|
||||
if (allowTrailingComma && this.afterTrailingComma(close)) break;
|
||||
} else first = false;
|
||||
|
||||
if (allowEmpty && this.type === tt.comma) {
|
||||
elts.push(null);
|
||||
} else {
|
||||
if (this.type === tt.ellipsis) elts.push(this.parseSpread(refShorthandDefaultPos));else elts.push(this.parseMaybeAssign(false, refShorthandDefaultPos));
|
||||
}
|
||||
}
|
||||
return elts;
|
||||
};
|
||||
|
||||
// Parse the next token as an identifier. If `liberal` is true (used
|
||||
// when parsing properties), it will also convert keywords into
|
||||
// identifiers.
|
||||
|
||||
pp.parseIdent = function (liberal) {
|
||||
var node = this.startNode();
|
||||
if (liberal && this.options.allowReserved == "never") liberal = false;
|
||||
if (this.type === tt.name) {
|
||||
if (!liberal && (!this.options.allowReserved && this.isReservedWord(this.value) || this.strict && reservedWords.strict(this.value) && (this.options.ecmaVersion >= 6 || this.input.slice(this.start, this.end).indexOf("\\") == -1))) this.raise(this.start, "The keyword '" + this.value + "' is reserved");
|
||||
node.name = this.value;
|
||||
} else if (liberal && this.type.keyword) {
|
||||
node.name = this.type.keyword;
|
||||
} else {
|
||||
this.unexpected();
|
||||
}
|
||||
this.next();
|
||||
return this.finishNode(node, "Identifier");
|
||||
};
|
||||
|
||||
// Parses await expression inside async function.
|
||||
|
||||
pp.parseAwait = function (node) {
|
||||
if (this.eat(tt.semi) || this.canInsertSemicolon()) {
|
||||
this.unexpected();
|
||||
}
|
||||
node.all = this.eat(tt.star);
|
||||
node.argument = this.parseMaybeAssign(true);
|
||||
return this.finishNode(node, "AwaitExpression");
|
||||
};
|
||||
|
||||
// Parses yield expression inside generator.
|
||||
|
||||
pp.parseYield = function () {
|
||||
var node = this.startNode();
|
||||
this.next();
|
||||
if (this.type == tt.semi || this.canInsertSemicolon() || this.type != tt.star && !this.type.startsExpr) {
|
||||
node.delegate = false;
|
||||
node.argument = null;
|
||||
} else {
|
||||
node.delegate = this.eat(tt.star);
|
||||
node.argument = this.parseMaybeAssign();
|
||||
}
|
||||
return this.finishNode(node, "YieldExpression");
|
||||
};
|
||||
|
||||
// Parses array and generator comprehensions.
|
||||
|
||||
pp.parseComprehension = function (node, isGenerator) {
|
||||
node.blocks = [];
|
||||
while (this.type === tt._for) {
|
||||
var block = this.startNode();
|
||||
this.next();
|
||||
this.expect(tt.parenL);
|
||||
block.left = this.parseBindingAtom();
|
||||
this.checkLVal(block.left, true);
|
||||
this.expectContextual("of");
|
||||
block.right = this.parseExpression();
|
||||
this.expect(tt.parenR);
|
||||
node.blocks.push(this.finishNode(block, "ComprehensionBlock"));
|
||||
}
|
||||
node.filter = this.eat(tt._if) ? this.parseParenExpression() : null;
|
||||
node.body = this.parseExpression();
|
||||
this.expect(isGenerator ? tt.parenR : tt.bracketR);
|
||||
node.generator = isGenerator;
|
||||
return this.finishNode(node, "ComprehensionExpression");
|
||||
};
|
||||
@ -1,143 +0,0 @@
|
||||
|
||||
|
||||
// Test whether a given character code starts an identifier.
|
||||
|
||||
"use strict";
|
||||
|
||||
exports.isIdentifierStart = isIdentifierStart;
|
||||
|
||||
// Test whether a given character is part of an identifier.
|
||||
|
||||
exports.isIdentifierChar = isIdentifierChar;
|
||||
exports.__esModule = true;
|
||||
// This is a trick taken from Esprima. It turns out that, on
|
||||
// non-Chrome browsers, to check whether a string is in a set, a
|
||||
// predicate containing a big ugly `switch` statement is faster than
|
||||
// a regular expression, and on Chrome the two are about on par.
|
||||
// This function uses `eval` (non-lexical) to produce such a
|
||||
// predicate from a space-separated string of words.
|
||||
//
|
||||
// It starts by sorting the words by length.
|
||||
|
||||
function makePredicate(words) {
|
||||
words = words.split(" ");
|
||||
var f = "",
|
||||
cats = [];
|
||||
out: for (var i = 0; i < words.length; ++i) {
|
||||
for (var j = 0; j < cats.length; ++j) {
|
||||
if (cats[j][0].length == words[i].length) {
|
||||
cats[j].push(words[i]);
|
||||
continue out;
|
||||
}
|
||||
}cats.push([words[i]]);
|
||||
}
|
||||
function compareTo(arr) {
|
||||
if (arr.length == 1) return f += "return str === " + JSON.stringify(arr[0]) + ";";
|
||||
f += "switch(str){";
|
||||
for (var i = 0; i < arr.length; ++i) {
|
||||
f += "case " + JSON.stringify(arr[i]) + ":";
|
||||
}f += "return true}return false;";
|
||||
}
|
||||
|
||||
// When there are more than three length categories, an outer
|
||||
// switch first dispatches on the lengths, to save on comparisons.
|
||||
|
||||
if (cats.length > 3) {
|
||||
cats.sort(function (a, b) {
|
||||
return b.length - a.length;
|
||||
});
|
||||
f += "switch(str.length){";
|
||||
for (var i = 0; i < cats.length; ++i) {
|
||||
var cat = cats[i];
|
||||
f += "case " + cat[0].length + ":";
|
||||
compareTo(cat);
|
||||
}
|
||||
f += "}"
|
||||
|
||||
// Otherwise, simply generate a flat `switch` statement.
|
||||
|
||||
;
|
||||
} else {
|
||||
compareTo(words);
|
||||
}
|
||||
return new Function("str", f);
|
||||
}
|
||||
|
||||
// Reserved word lists for various dialects of the language
|
||||
|
||||
var reservedWords = {
|
||||
3: makePredicate("abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile"),
|
||||
5: makePredicate("class enum extends super const export import"),
|
||||
6: makePredicate("enum await"),
|
||||
strict: makePredicate("implements interface let package private protected public static yield"),
|
||||
strictBind: makePredicate("eval arguments")
|
||||
};
|
||||
|
||||
exports.reservedWords = reservedWords;
|
||||
// And the keywords
|
||||
|
||||
var ecma5AndLessKeywords = "break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this";
|
||||
|
||||
var keywords = {
|
||||
5: makePredicate(ecma5AndLessKeywords),
|
||||
6: makePredicate(ecma5AndLessKeywords + " let const class extends export import yield super")
|
||||
};
|
||||
|
||||
exports.keywords = keywords;
|
||||
// ## Character categories
|
||||
|
||||
// Big ugly regular expressions that match characters in the
|
||||
// whitespace, identifier, and identifier-start categories. These
|
||||
// are only applied when a character is found to actually have a
|
||||
// code point above 128.
|
||||
// Generated by `tools/generate-identifier-regex.js`.
|
||||
|
||||
var nonASCIIidentifierStartChars = "ªµºÀ-ÖØ-öø-ˁˆ-ˑˠ-ˤˬˮͰ-ʹͶͷͺ-ͽͿΆΈ-ΊΌΎ-ΡΣ-ϵϷ-ҁҊ-ԯԱ-Ֆՙա-ևא-תװ-ײؠ-يٮٯٱ-ۓەۥۦۮۯۺ-ۼۿܐܒ-ܯݍ-ޥޱߊ-ߪߴߵߺࠀ-ࠕࠚࠤࠨࡀ-ࡘࢠ-ࢲऄ-हऽॐक़-ॡॱ-ঀঅ-ঌএঐও-নপ-রলশ-হঽৎড়ঢ়য়-ৡৰৱਅ-ਊਏਐਓ-ਨਪ-ਰਲਲ਼ਵਸ਼ਸਹਖ਼-ੜਫ਼ੲ-ੴઅ-ઍએ-ઑઓ-નપ-રલળવ-હઽૐૠૡଅ-ଌଏଐଓ-ନପ-ରଲଳଵ-ହଽଡ଼ଢ଼ୟ-ୡୱஃஅ-ஊஎ-ஐஒ-கஙசஜஞடணதந-பம-ஹௐఅ-ఌఎ-ఐఒ-నప-హఽౘౙౠౡಅ-ಌಎ-ಐಒ-ನಪ-ಳವ-ಹಽೞೠೡೱೲഅ-ഌഎ-ഐഒ-ഺഽൎൠൡൺ-ൿඅ-ඖක-නඳ-රලව-ෆก-ะาำเ-ๆກຂຄງຈຊຍດ-ທນ-ຟມ-ຣລວສຫອ-ະາຳຽເ-ໄໆໜ-ໟༀཀ-ཇཉ-ཬྈ-ྌက-ဪဿၐ-ၕၚ-ၝၡၥၦၮ-ၰၵ-ႁႎႠ-ჅჇჍა-ჺჼ-ቈቊ-ቍቐ-ቖቘቚ-ቝበ-ኈኊ-ኍነ-ኰኲ-ኵኸ-ኾዀዂ-ዅወ-ዖዘ-ጐጒ-ጕጘ-ፚᎀ-ᎏᎠ-Ᏼᐁ-ᙬᙯ-ᙿᚁ-ᚚᚠ-ᛪᛮ-ᛸᜀ-ᜌᜎ-ᜑᜠ-ᜱᝀ-ᝑᝠ-ᝬᝮ-ᝰក-ឳៗៜᠠ-ᡷᢀ-ᢨᢪᢰ-ᣵᤀ-ᤞᥐ-ᥭᥰ-ᥴᦀ-ᦫᧁ-ᧇᨀ-ᨖᨠ-ᩔᪧᬅ-ᬳᭅ-ᭋᮃ-ᮠᮮᮯᮺ-ᯥᰀ-ᰣᱍ-ᱏᱚ-ᱽᳩ-ᳬᳮ-ᳱᳵᳶᴀ-ᶿḀ-ἕἘ-Ἕἠ-ὅὈ-Ὅὐ-ὗὙὛὝὟ-ώᾀ-ᾴᾶ-ᾼιῂ-ῄῆ-ῌῐ-ΐῖ-Ίῠ-Ῥῲ-ῴῶ-ῼⁱⁿₐ-ₜℂℇℊ-ℓℕ℘-ℝℤΩℨK-ℹℼ-ℿⅅ-ⅉⅎⅠ-ↈⰀ-Ⱞⰰ-ⱞⱠ-ⳤⳫ-ⳮⳲⳳⴀ-ⴥⴧⴭⴰ-ⵧⵯⶀ-ⶖⶠ-ⶦⶨ-ⶮⶰ-ⶶⶸ-ⶾⷀ-ⷆⷈ-ⷎⷐ-ⷖⷘ-ⷞ々-〇〡-〩〱-〵〸-〼ぁ-ゖ゛-ゟァ-ヺー-ヿㄅ-ㄭㄱ-ㆎㆠ-ㆺㇰ-ㇿ㐀-䶵一-鿌ꀀ-ꒌꓐ-ꓽꔀ-ꘌꘐ-ꘟꘪꘫꙀ-ꙮꙿ-ꚝꚠ-ꛯꜗ-ꜟꜢ-ꞈꞋ-ꞎꞐ-ꞭꞰꞱꟷ-ꠁꠃ-ꠅꠇ-ꠊꠌ-ꠢꡀ-ꡳꢂ-ꢳꣲ-ꣷꣻꤊ-ꤥꤰ-ꥆꥠ-ꥼꦄ-ꦲꧏꧠ-ꧤꧦ-ꧯꧺ-ꧾꨀ-ꨨꩀ-ꩂꩄ-ꩋꩠ-ꩶꩺꩾ-ꪯꪱꪵꪶꪹ-ꪽꫀꫂꫛ-ꫝꫠ-ꫪꫲ-ꫴꬁ-ꬆꬉ-ꬎꬑ-ꬖꬠ-ꬦꬨ-ꬮꬰ-ꭚꭜ-ꭟꭤꭥꯀ-ꯢ가-힣ힰ-ퟆퟋ-ퟻ豈-舘並-龎ff-stﬓ-ﬗיִײַ-ﬨשׁ-זּטּ-לּמּנּסּףּפּצּ-ﮱﯓ-ﴽﵐ-ﶏﶒ-ﷇﷰ-ﷻﹰ-ﹴﹶ-ﻼＡ-Ｚａ-ｚｦ-ﾾￂ-ￇￊ-ￏￒ-ￗￚ-ￜ";
|
||||
var nonASCIIidentifierChars = "·̀-ͯ·҃-֑҇-ׇֽֿׁׂׅׄؐ-ًؚ-٩ٰۖ-ۜ۟-۪ۤۧۨ-ۭ۰-۹ܑܰ-݊ަ-ް߀-߉߫-߳ࠖ-࠙ࠛ-ࠣࠥ-ࠧࠩ-࡙࠭-࡛ࣤ-ःऺ-़ा-ॏ॑-ॗॢॣ०-९ঁ-ঃ়া-ৄেৈো-্ৗৢৣ০-৯ਁ-ਃ਼ਾ-ੂੇੈੋ-੍ੑ੦-ੱੵઁ-ઃ઼ા-ૅે-ૉો-્ૢૣ૦-૯ଁ-ଃ଼ା-ୄେୈୋ-୍ୖୗୢୣ୦-୯ஂா-ூெ-ைொ-்ௗ௦-௯ఀ-ఃా-ౄె-ైొ-్ౕౖౢౣ౦-౯ಁ-ಃ಼ಾ-ೄೆ-ೈೊ-್ೕೖೢೣ೦-೯ഁ-ഃാ-ൄെ-ൈൊ-്ൗൢൣ൦-൯ංඃ්ා-ුූෘ-ෟ෦-෯ෲෳัิ-ฺ็-๎๐-๙ັິ-ູົຼ່-ໍ໐-໙༘༙༠-༩༹༵༷༾༿ཱ-྄྆྇ྍ-ྗྙ-ྼ࿆ါ-ှ၀-၉ၖ-ၙၞ-ၠၢ-ၤၧ-ၭၱ-ၴႂ-ႍႏ-ႝ፝-፟፩-፱ᜒ-᜔ᜲ-᜴ᝒᝓᝲᝳ឴-៓៝០-៩᠋-᠍᠐-᠙ᢩᤠ-ᤫᤰ-᤻᥆-᥏ᦰ-ᧀᧈᧉ᧐-᧚ᨗ-ᨛᩕ-ᩞ᩠-᩿᩼-᪉᪐-᪙᪰-᪽ᬀ-ᬄ᬴-᭄᭐-᭙᭫-᭳ᮀ-ᮂᮡ-ᮭ᮰-᮹᯦-᯳ᰤ-᰷᱀-᱉᱐-᱙᳐-᳔᳒-᳨᳭ᳲ-᳴᳸᳹᷀-᷵᷼-᷿‿⁀⁔⃐-⃥⃜⃡-⃰⳯-⵿⳱ⷠ-〪ⷿ-゙゚〯꘠-꘩꙯ꙴ-꙽ꚟ꛰꛱ꠂ꠆ꠋꠣ-ꠧꢀꢁꢴ-꣄꣐-꣙꣠-꣱꤀-꤉ꤦ-꤭ꥇ-꥓ꦀ-ꦃ꦳-꧀꧐-꧙ꧥ꧰-꧹ꨩ-ꨶꩃꩌꩍ꩐-꩙ꩻ-ꩽꪰꪲ-ꪴꪷꪸꪾ꪿꫁ꫫ-ꫯꫵ꫶ꯣ-ꯪ꯬꯭꯰-꯹ﬞ︀-️︠-︭︳︴﹍-﹏０-９＿";
|
||||
|
||||
var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
|
||||
var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");
|
||||
|
||||
nonASCIIidentifierStartChars = nonASCIIidentifierChars = null;
|
||||
|
||||
// These are a run-length and offset encoded representation of the
|
||||
// >0xffff code points that are a valid part of identifiers. The
|
||||
// offset starts at 0x10000, and each pair of numbers represents an
|
||||
// offset to the next range, and then a size of the range. They were
|
||||
// generated by tools/generate-identifier-regex.js
|
||||
var astralIdentifierStartCodes = [0, 11, 2, 25, 2, 18, 2, 1, 2, 14, 3, 13, 35, 122, 70, 52, 268, 28, 4, 48, 48, 31, 17, 26, 6, 37, 11, 29, 3, 35, 5, 7, 2, 4, 43, 157, 99, 39, 9, 51, 157, 310, 10, 21, 11, 7, 153, 5, 3, 0, 2, 43, 2, 1, 4, 0, 3, 22, 11, 22, 10, 30, 98, 21, 11, 25, 71, 55, 7, 1, 65, 0, 16, 3, 2, 2, 2, 26, 45, 28, 4, 28, 36, 7, 2, 27, 28, 53, 11, 21, 11, 18, 14, 17, 111, 72, 955, 52, 76, 44, 33, 24, 27, 35, 42, 34, 4, 0, 13, 47, 15, 3, 22, 0, 38, 17, 2, 24, 133, 46, 39, 7, 3, 1, 3, 21, 2, 6, 2, 1, 2, 4, 4, 0, 32, 4, 287, 47, 21, 1, 2, 0, 185, 46, 82, 47, 21, 0, 60, 42, 502, 63, 32, 0, 449, 56, 1288, 920, 104, 110, 2962, 1070, 13266, 568, 8, 30, 114, 29, 19, 47, 17, 3, 32, 20, 6, 18, 881, 68, 12, 0, 67, 12, 16481, 1, 3071, 106, 6, 12, 4, 8, 8, 9, 5991, 84, 2, 70, 2, 1, 3, 0, 3, 1, 3, 3, 2, 11, 2, 0, 2, 6, 2, 64, 2, 3, 3, 7, 2, 6, 2, 27, 2, 3, 2, 4, 2, 0, 4, 6, 2, 339, 3, 24, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 7, 4149, 196, 1340, 3, 2, 26, 2, 1, 2, 0, 3, 0, 2, 9, 2, 3, 2, 0, 2, 0, 7, 0, 5, 0, 2, 0, 2, 0, 2, 2, 2, 1, 2, 0, 3, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 1, 2, 0, 3, 3, 2, 6, 2, 3, 2, 3, 2, 0, 2, 9, 2, 16, 6, 2, 2, 4, 2, 16, 4421, 42710, 42, 4148, 12, 221, 16355, 541];
|
||||
var astralIdentifierCodes = [509, 0, 227, 0, 150, 4, 294, 9, 1368, 2, 2, 1, 6, 3, 41, 2, 5, 0, 166, 1, 1306, 2, 54, 14, 32, 9, 16, 3, 46, 10, 54, 9, 7, 2, 37, 13, 2, 9, 52, 0, 13, 2, 49, 13, 16, 9, 83, 11, 168, 11, 6, 9, 8, 2, 57, 0, 2, 6, 3, 1, 3, 2, 10, 0, 11, 1, 3, 6, 4, 4, 316, 19, 13, 9, 214, 6, 3, 8, 112, 16, 16, 9, 82, 12, 9, 9, 535, 9, 20855, 9, 135, 4, 60, 6, 26, 9, 1016, 45, 17, 3, 19723, 1, 5319, 4, 4, 5, 9, 7, 3, 6, 31, 3, 149, 2, 1418, 49, 4305, 6, 792618, 239];
|
||||
|
||||
// This has a complexity linear to the value of the code. The
|
||||
// assumption is that looking up astral identifier characters is
|
||||
// rare.
|
||||
function isInAstralSet(code, set) {
|
||||
var pos = 65536;
|
||||
for (var i = 0; i < set.length; i += 2) {
|
||||
pos += set[i];
|
||||
if (pos > code) return false;
|
||||
pos += set[i + 1];
|
||||
if (pos >= code) return true;
|
||||
}
|
||||
}
|
||||
function isIdentifierStart(code, astral) {
|
||||
if (code < 65) return code === 36;
|
||||
if (code < 91) return true;
|
||||
if (code < 97) return code === 95;
|
||||
if (code < 123) return true;
|
||||
if (code <= 65535) return code >= 170 && nonASCIIidentifierStart.test(String.fromCharCode(code));
|
||||
if (astral === false) return false;
|
||||
return isInAstralSet(code, astralIdentifierStartCodes);
|
||||
}
|
||||
|
||||
function isIdentifierChar(code, astral) {
|
||||
if (code < 48) return code === 36;
|
||||
if (code < 58) return true;
|
||||
if (code < 65) return false;
|
||||
if (code < 91) return true;
|
||||
if (code < 97) return code === 95;
|
||||
if (code < 123) return true;
|
||||
if (code <= 65535) return code >= 170 && nonASCIIidentifier.test(String.fromCharCode(code));
|
||||
if (astral === false) return false;
|
||||
return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes);
|
||||
}
|
||||
@ -1,124 +0,0 @@
|
||||
|
||||
|
||||
// The main exported interface (under `self.acorn` when in the
|
||||
// browser) is a `parse` function that takes a code string and
|
||||
// returns an abstract syntax tree as specified by [Mozilla parser
|
||||
// API][api].
|
||||
//
|
||||
// [api]: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API
|
||||
|
||||
"use strict";
|
||||
|
||||
exports.parse = parse;
|
||||
|
||||
// This function tries to parse a single expression at a given
|
||||
// offset in a string. Useful for parsing mixed-language formats
|
||||
// that embed JavaScript expressions.
|
||||
|
||||
exports.parseExpressionAt = parseExpressionAt;
|
||||
|
||||
// Acorn is organized as a tokenizer and a recursive-descent parser.
|
||||
// The `tokenize` export provides an interface to the tokenizer.
|
||||
// Because the tokenizer is optimized for being efficiently used by
|
||||
// the Acorn parser itself, this interface is somewhat crude and not
|
||||
// very modular.
|
||||
|
||||
exports.tokenizer = tokenizer;
|
||||
exports.__esModule = true;
|
||||
// Acorn is a tiny, fast JavaScript parser written in JavaScript.
|
||||
//
|
||||
// Acorn was written by Marijn Haverbeke, Ingvar Stepanyan, and
|
||||
// various contributors and released under an MIT license.
|
||||
//
|
||||
// Git repositories for Acorn are available at
|
||||
//
|
||||
// http://marijnhaverbeke.nl/git/acorn
|
||||
// https://github.com/marijnh/acorn.git
|
||||
//
|
||||
// Please use the [github bug tracker][ghbt] to report issues.
|
||||
//
|
||||
// [ghbt]: https://github.com/marijnh/acorn/issues
|
||||
//
|
||||
// This file defines the main parser interface. The library also comes
|
||||
// with a [error-tolerant parser][dammit] and an
|
||||
// [abstract syntax tree walker][walk], defined in other files.
|
||||
//
|
||||
// [dammit]: acorn_loose.js
|
||||
// [walk]: util/walk.js
|
||||
|
||||
var _state = require("./state");
|
||||
|
||||
var Parser = _state.Parser;
|
||||
|
||||
var _options = require("./options");
|
||||
|
||||
var getOptions = _options.getOptions;
|
||||
|
||||
require("./parseutil");
|
||||
|
||||
require("./statement");
|
||||
|
||||
require("./lval");
|
||||
|
||||
require("./expression");
|
||||
|
||||
require("./lookahead");
|
||||
|
||||
exports.Parser = _state.Parser;
|
||||
exports.plugins = _state.plugins;
|
||||
exports.defaultOptions = _options.defaultOptions;
|
||||
|
||||
var _location = require("./location");
|
||||
|
||||
exports.SourceLocation = _location.SourceLocation;
|
||||
exports.getLineInfo = _location.getLineInfo;
|
||||
exports.Node = require("./node").Node;
|
||||
|
||||
var _tokentype = require("./tokentype");
|
||||
|
||||
exports.TokenType = _tokentype.TokenType;
|
||||
exports.tokTypes = _tokentype.types;
|
||||
|
||||
var _tokencontext = require("./tokencontext");
|
||||
|
||||
exports.TokContext = _tokencontext.TokContext;
|
||||
exports.tokContexts = _tokencontext.types;
|
||||
|
||||
var _identifier = require("./identifier");
|
||||
|
||||
exports.isIdentifierChar = _identifier.isIdentifierChar;
|
||||
exports.isIdentifierStart = _identifier.isIdentifierStart;
|
||||
exports.Token = require("./tokenize").Token;
|
||||
|
||||
var _whitespace = require("./whitespace");
|
||||
|
||||
exports.isNewLine = _whitespace.isNewLine;
|
||||
exports.lineBreak = _whitespace.lineBreak;
|
||||
exports.lineBreakG = _whitespace.lineBreakG;
|
||||
|
||||
require("../plugins/flow");
|
||||
|
||||
require("../plugins/jsx");
|
||||
|
||||
var version = "1.0.0";exports.version = version;
|
||||
|
||||
function parse(input, options) {
|
||||
var p = parser(options, input);
|
||||
var startPos = p.options.locations ? [p.pos, p.curPosition()] : p.pos;
|
||||
p.nextToken();
|
||||
return p.parseTopLevel(p.options.program || p.startNodeAt(startPos));
|
||||
}
|
||||
|
||||
function parseExpressionAt(input, pos, options) {
|
||||
var p = parser(options, input, pos);
|
||||
p.nextToken();
|
||||
return p.parseExpression();
|
||||
}
|
||||
|
||||
function tokenizer(input, options) {
|
||||
return parser(options, input);
|
||||
}
|
||||
|
||||
function parser(options, input) {
|
||||
return new Parser(getOptions(options), String(input));
|
||||
}
|
||||
@ -1,79 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } };
|
||||
|
||||
// The `getLineInfo` function is mostly useful when the
|
||||
// `locations` option is off (for performance reasons) and you
|
||||
// want to find the line/column position for a given character
|
||||
// offset. `input` should be the code string that the offset refers
|
||||
// into.
|
||||
|
||||
exports.getLineInfo = getLineInfo;
|
||||
exports.__esModule = true;
|
||||
|
||||
var Parser = require("./state").Parser;
|
||||
|
||||
var lineBreakG = require("./whitespace").lineBreakG;
|
||||
|
||||
// These are used when `options.locations` is on, for the
|
||||
// `startLoc` and `endLoc` properties.
|
||||
|
||||
var Position = exports.Position = (function () {
|
||||
function Position(line, col) {
|
||||
_classCallCheck(this, Position);
|
||||
|
||||
this.line = line;
|
||||
this.column = col;
|
||||
}
|
||||
|
||||
Position.prototype.offset = function offset(n) {
|
||||
return new Position(this.line, this.column + n);
|
||||
};
|
||||
|
||||
return Position;
|
||||
})();
|
||||
|
||||
var SourceLocation = exports.SourceLocation = function SourceLocation(p, start, end) {
|
||||
_classCallCheck(this, SourceLocation);
|
||||
|
||||
this.start = start;
|
||||
this.end = end;
|
||||
if (p.sourceFile !== null) this.source = p.sourceFile;
|
||||
};
|
||||
|
||||
function getLineInfo(input, offset) {
|
||||
for (var line = 1, cur = 0;;) {
|
||||
lineBreakG.lastIndex = cur;
|
||||
var match = lineBreakG.exec(input);
|
||||
if (match && match.index < offset) {
|
||||
++line;
|
||||
cur = match.index + match[0].length;
|
||||
} else {
|
||||
return new Position(line, offset - cur);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var pp = Parser.prototype;
|
||||
|
||||
// This function is used to raise exceptions on parse errors. It
|
||||
// takes an offset integer (into the current `input`) to indicate
|
||||
// the location of the error, attaches the position to the end
|
||||
// of the error message, and then raises a `SyntaxError` with that
|
||||
// message.
|
||||
|
||||
pp.raise = function (pos, message) {
|
||||
var loc = getLineInfo(this.input, pos);
|
||||
message += " (" + loc.line + ":" + loc.column + ")";
|
||||
var err = new SyntaxError(message);
|
||||
err.pos = pos;err.loc = loc;err.raisedAt = this.pos;
|
||||
throw err;
|
||||
};
|
||||
|
||||
pp.curPosition = function () {
|
||||
return new Position(this.curLine, this.pos - this.lineStart);
|
||||
};
|
||||
|
||||
pp.markPosition = function () {
|
||||
return this.options.locations ? [this.start, this.startLoc] : this.start;
|
||||
};
|
||||
@ -1,24 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
var Parser = require("./state").Parser;
|
||||
|
||||
var pp = Parser.prototype;
|
||||
|
||||
var STATE_KEYS = ["lastTokStartLoc", "lastTokEndLoc", "lastTokStart", "lastTokEnd", "lineStart", "startLoc", "endLoc", "start", "pos", "end", "type", "value"];
|
||||
|
||||
pp.getState = function () {
|
||||
var state = {};
|
||||
for (var i = 0; i < STATE_KEYS.length; i++) {
|
||||
var key = STATE_KEYS[i];
|
||||
state[key] = this[key];
|
||||
}
|
||||
return state;
|
||||
};
|
||||
|
||||
pp.lookahead = function () {
|
||||
var old = this.getState();
|
||||
this.next();
|
||||
var curr = this.getState();
|
||||
for (var key in old) this[key] = old[key];
|
||||
return curr;
|
||||
};
|
||||
@ -1,199 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
var tt = require("./tokentype").types;
|
||||
|
||||
var Parser = require("./state").Parser;
|
||||
|
||||
var reservedWords = require("./identifier").reservedWords;
|
||||
|
||||
var has = require("./util").has;
|
||||
|
||||
var pp = Parser.prototype;
|
||||
|
||||
// Convert existing expression atom to assignable pattern
|
||||
// if possible.
|
||||
|
||||
pp.toAssignable = function (node, isBinding) {
|
||||
if (this.options.ecmaVersion >= 6 && node) {
|
||||
switch (node.type) {
|
||||
case "Identifier":
|
||||
case "ObjectPattern":
|
||||
case "ArrayPattern":
|
||||
case "AssignmentPattern":
|
||||
break;
|
||||
|
||||
case "ObjectExpression":
|
||||
node.type = "ObjectPattern";
|
||||
for (var i = 0; i < node.properties.length; i++) {
|
||||
var prop = node.properties[i];
|
||||
if (prop.kind !== "init") this.raise(prop.key.start, "Object pattern can't contain getter or setter");
|
||||
this.toAssignable(prop.value, isBinding);
|
||||
}
|
||||
break;
|
||||
|
||||
case "ArrayExpression":
|
||||
node.type = "ArrayPattern";
|
||||
this.toAssignableList(node.elements, isBinding);
|
||||
break;
|
||||
|
||||
case "AssignmentExpression":
|
||||
if (node.operator === "=") {
|
||||
node.type = "AssignmentPattern";
|
||||
} else {
|
||||
this.raise(node.left.end, "Only '=' operator can be used for specifying default value.");
|
||||
}
|
||||
break;
|
||||
|
||||
case "MemberExpression":
|
||||
if (!isBinding) break;
|
||||
|
||||
default:
|
||||
this.raise(node.start, "Assigning to rvalue");
|
||||
}
|
||||
}
|
||||
return node;
|
||||
};
|
||||
|
||||
// Convert list of expression atoms to binding list.
|
||||
|
||||
pp.toAssignableList = function (exprList, isBinding) {
|
||||
var end = exprList.length;
|
||||
if (end) {
|
||||
var last = exprList[end - 1];
|
||||
if (last && last.type == "RestElement") {
|
||||
--end;
|
||||
} else if (last && last.type == "SpreadElement") {
|
||||
last.type = "RestElement";
|
||||
var arg = last.argument;
|
||||
this.toAssignable(arg, isBinding);
|
||||
if (arg.type !== "Identifier" && arg.type !== "MemberExpression" && arg.type !== "ArrayPattern") this.unexpected(arg.start);
|
||||
--end;
|
||||
}
|
||||
}
|
||||
for (var i = 0; i < end; i++) {
|
||||
var elt = exprList[i];
|
||||
if (elt) this.toAssignable(elt, isBinding);
|
||||
}
|
||||
return exprList;
|
||||
};
|
||||
|
||||
// Parses spread element.
|
||||
|
||||
pp.parseSpread = function (refShorthandDefaultPos) {
|
||||
var node = this.startNode();
|
||||
this.next();
|
||||
node.argument = this.parseMaybeAssign(refShorthandDefaultPos);
|
||||
return this.finishNode(node, "SpreadElement");
|
||||
};
|
||||
|
||||
pp.parseRest = function () {
|
||||
var node = this.startNode();
|
||||
this.next();
|
||||
node.argument = this.type === tt.name || this.type === tt.bracketL ? this.parseBindingAtom() : this.unexpected();
|
||||
return this.finishNode(node, "RestElement");
|
||||
};
|
||||
|
||||
// Parses lvalue (assignable) atom.
|
||||
|
||||
pp.parseBindingAtom = function () {
|
||||
if (this.options.ecmaVersion < 6) return this.parseIdent();
|
||||
switch (this.type) {
|
||||
case tt.name:
|
||||
return this.parseIdent();
|
||||
|
||||
case tt.bracketL:
|
||||
var node = this.startNode();
|
||||
this.next();
|
||||
node.elements = this.parseBindingList(tt.bracketR, true, true);
|
||||
return this.finishNode(node, "ArrayPattern");
|
||||
|
||||
case tt.braceL:
|
||||
return this.parseObj(true);
|
||||
|
||||
default:
|
||||
this.unexpected();
|
||||
}
|
||||
};
|
||||
|
||||
pp.parseBindingList = function (close, allowEmpty, allowTrailingComma) {
|
||||
var elts = [],
|
||||
first = true;
|
||||
while (!this.eat(close)) {
|
||||
if (first) first = false;else this.expect(tt.comma);
|
||||
if (allowEmpty && this.type === tt.comma) {
|
||||
elts.push(null);
|
||||
} else if (allowTrailingComma && this.afterTrailingComma(close)) {
|
||||
break;
|
||||
} else if (this.type === tt.ellipsis) {
|
||||
elts.push(this.parseAssignableListItemTypes(this.parseRest()));
|
||||
this.expect(close);
|
||||
break;
|
||||
} else {
|
||||
elts.push(this.parseAssignableListItemTypes(this.parseMaybeDefault()));
|
||||
}
|
||||
}
|
||||
return elts;
|
||||
};
|
||||
|
||||
pp.parseAssignableListItemTypes = function (param) {
|
||||
return param;
|
||||
};
|
||||
|
||||
// Parses assignment pattern around given atom if possible.
|
||||
|
||||
pp.parseMaybeDefault = function (startPos, left) {
|
||||
startPos = startPos || this.markPosition();
|
||||
left = left || this.parseBindingAtom();
|
||||
if (!this.eat(tt.eq)) return left;
|
||||
var node = this.startNodeAt(startPos);
|
||||
node.operator = "=";
|
||||
node.left = left;
|
||||
node.right = this.parseMaybeAssign();
|
||||
return this.finishNode(node, "AssignmentPattern");
|
||||
};
|
||||
|
||||
// Verify that a node is an lval — something that can be assigned
|
||||
// to.
|
||||
|
||||
pp.checkLVal = function (expr, isBinding, checkClashes) {
|
||||
switch (expr.type) {
|
||||
case "Identifier":
|
||||
if (this.strict && (reservedWords.strictBind(expr.name) || reservedWords.strict(expr.name))) this.raise(expr.start, (isBinding ? "Binding " : "Assigning to ") + expr.name + " in strict mode");
|
||||
if (checkClashes) {
|
||||
if (has(checkClashes, expr.name)) this.raise(expr.start, "Argument name clash in strict mode");
|
||||
checkClashes[expr.name] = true;
|
||||
}
|
||||
break;
|
||||
|
||||
case "MemberExpression":
|
||||
if (isBinding) this.raise(expr.start, (isBinding ? "Binding" : "Assigning to") + " member expression");
|
||||
break;
|
||||
|
||||
case "ObjectPattern":
|
||||
for (var i = 0; i < expr.properties.length; i++) {
|
||||
var prop = expr.properties[i];
|
||||
if (prop.type === "Property") prop = prop.value;
|
||||
this.checkLVal(prop, isBinding, checkClashes);
|
||||
}
|
||||
break;
|
||||
|
||||
case "ArrayPattern":
|
||||
for (var i = 0; i < expr.elements.length; i++) {
|
||||
var elem = expr.elements[i];
|
||||
if (elem) this.checkLVal(elem, isBinding, checkClashes);
|
||||
}
|
||||
break;
|
||||
|
||||
case "AssignmentPattern":
|
||||
this.checkLVal(expr.left, isBinding, checkClashes);
|
||||
break;
|
||||
|
||||
case "SpreadProperty":
|
||||
case "RestElement":
|
||||
this.checkLVal(expr.argument, isBinding, checkClashes);
|
||||
break;
|
||||
|
||||
default:
|
||||
this.raise(expr.start, (isBinding ? "Binding" : "Assigning to") + " rvalue");
|
||||
}
|
||||
};
|
||||
@ -1,61 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } };
|
||||
|
||||
exports.__esModule = true;
|
||||
|
||||
var Parser = require("./state").Parser;
|
||||
|
||||
var SourceLocation = require("./location").SourceLocation;
|
||||
|
||||
// Start an AST node, attaching a start offset.
|
||||
|
||||
var pp = Parser.prototype;
|
||||
|
||||
var Node = exports.Node = function Node() {
|
||||
_classCallCheck(this, Node);
|
||||
};
|
||||
|
||||
pp.startNode = function () {
|
||||
var node = new Node();
|
||||
node.start = this.start;
|
||||
if (this.options.locations) node.loc = new SourceLocation(this, this.startLoc);
|
||||
if (this.options.directSourceFile) node.sourceFile = this.options.directSourceFile;
|
||||
if (this.options.ranges) node.range = [this.start, 0];
|
||||
return node;
|
||||
};
|
||||
|
||||
pp.startNodeAt = function (pos) {
|
||||
var node = new Node(),
|
||||
start = pos;
|
||||
if (this.options.locations) {
|
||||
node.loc = new SourceLocation(this, start[1]);
|
||||
start = pos[0];
|
||||
}
|
||||
node.start = start;
|
||||
if (this.options.directSourceFile) node.sourceFile = this.options.directSourceFile;
|
||||
if (this.options.ranges) node.range = [start, 0];
|
||||
return node;
|
||||
};
|
||||
|
||||
// Finish an AST node, adding `type` and `end` properties.
|
||||
|
||||
pp.finishNode = function (node, type) {
|
||||
node.type = type;
|
||||
node.end = this.lastTokEnd;
|
||||
if (this.options.locations) node.loc.end = this.lastTokEndLoc;
|
||||
if (this.options.ranges) node.range[1] = this.lastTokEnd;
|
||||
return node;
|
||||
};
|
||||
|
||||
// Finish node at given position
|
||||
|
||||
pp.finishNodeAt = function (node, type, pos) {
|
||||
if (this.options.locations) {
|
||||
node.loc.end = pos[1];pos = pos[0];
|
||||
}
|
||||
node.type = type;
|
||||
node.end = pos;
|
||||
if (this.options.ranges) node.range[1] = pos;
|
||||
return node;
|
||||
};
|
||||
@ -1,132 +0,0 @@
|
||||
|
||||
|
||||
// Interpret and default an options object
|
||||
|
||||
"use strict";
|
||||
|
||||
exports.getOptions = getOptions;
|
||||
exports.__esModule = true;
|
||||
|
||||
var _util = require("./util");
|
||||
|
||||
var has = _util.has;
|
||||
var isArray = _util.isArray;
|
||||
|
||||
var SourceLocation = require("./location").SourceLocation;
|
||||
|
||||
// A second optional argument can be given to further configure
|
||||
// the parser process. These options are recognized:
|
||||
|
||||
var defaultOptions = {
|
||||
// `ecmaVersion` indicates the ECMAScript version to parse. Must
|
||||
// be either 3, or 5, or 6. This influences support for strict
|
||||
// mode, the set of reserved words, support for getters and
|
||||
// setters and other features.
|
||||
ecmaVersion: 5,
|
||||
// Source type ("script" or "module") for different semantics
|
||||
sourceType: "script",
|
||||
// `onInsertedSemicolon` can be a callback that will be called
|
||||
// when a semicolon is automatically inserted. It will be passed
|
||||
// th position of the comma as an offset, and if `locations` is
|
||||
// enabled, it is given the location as a `{line, column}` object
|
||||
// as second argument.
|
||||
onInsertedSemicolon: null,
|
||||
// `onTrailingComma` is similar to `onInsertedSemicolon`, but for
|
||||
// trailing commas.
|
||||
onTrailingComma: null,
|
||||
// By default, reserved words are not enforced. Disable
|
||||
// `allowReserved` to enforce them. When this option has the
|
||||
// value "never", reserved words and keywords can also not be
|
||||
// used as property names.
|
||||
allowReserved: true,
|
||||
// When enabled, a return at the top level is not considered an
|
||||
// error.
|
||||
allowReturnOutsideFunction: false,
|
||||
// When enabled, import/export statements are not constrained to
|
||||
// appearing at the top of the program.
|
||||
allowImportExportEverywhere: false,
|
||||
// When enabled, hashbang directive in the beginning of file
|
||||
// is allowed and treated as a line comment.
|
||||
allowHashBang: false,
|
||||
// When `locations` is on, `loc` properties holding objects with
|
||||
// `start` and `end` properties in `{line, column}` form (with
|
||||
// line being 1-based and column 0-based) will be attached to the
|
||||
// nodes.
|
||||
locations: false,
|
||||
// A function can be passed as `onToken` option, which will
|
||||
// cause Acorn to call that function with object in the same
|
||||
// format as tokenize() returns. Note that you are not
|
||||
// allowed to call the parser from the callback—that will
|
||||
// corrupt its internal state.
|
||||
onToken: null,
|
||||
// A function can be passed as `onComment` option, which will
|
||||
// cause Acorn to call that function with `(block, text, start,
|
||||
// end)` parameters whenever a comment is skipped. `block` is a
|
||||
// boolean indicating whether this is a block (`/* */`) comment,
|
||||
// `text` is the content of the comment, and `start` and `end` are
|
||||
// character offsets that denote the start and end of the comment.
|
||||
// When the `locations` option is on, two more parameters are
|
||||
// passed, the full `{line, column}` locations of the start and
|
||||
// end of the comments. Note that you are not allowed to call the
|
||||
// parser from the callback—that will corrupt its internal state.
|
||||
onComment: null,
|
||||
// Nodes have their start and end characters offsets recorded in
|
||||
// `start` and `end` properties (directly on the node, rather than
|
||||
// the `loc` object, which holds line/column data. To also add a
|
||||
// [semi-standardized][range] `range` property holding a `[start,
|
||||
// end]` array with the same numbers, set the `ranges` option to
|
||||
// `true`.
|
||||
//
|
||||
// [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678
|
||||
ranges: false,
|
||||
// It is possible to parse multiple files into a single AST by
|
||||
// passing the tree produced by parsing the first file as
|
||||
// `program` option in subsequent parses. This will add the
|
||||
// toplevel forms of the parsed file to the `Program` (top) node
|
||||
// of an existing parse tree.
|
||||
program: null,
|
||||
// When `locations` is on, you can pass this to record the source
|
||||
// file in every node's `loc` object.
|
||||
sourceFile: null,
|
||||
// This value, if given, is stored in every node, whether
|
||||
// `locations` is on or off.
|
||||
directSourceFile: null,
|
||||
// When enabled, parenthesized expressions are represented by
|
||||
// (non-standard) ParenthesizedExpression nodes
|
||||
preserveParens: false,
|
||||
plugins: {},
|
||||
// Babel-specific options
|
||||
features: {},
|
||||
strictMode: null
|
||||
};exports.defaultOptions = defaultOptions;
|
||||
|
||||
function getOptions(opts) {
|
||||
var options = {};
|
||||
for (var opt in defaultOptions) {
|
||||
options[opt] = opts && has(opts, opt) ? opts[opt] : defaultOptions[opt];
|
||||
}if (isArray(options.onToken)) {
|
||||
(function () {
|
||||
var tokens = options.onToken;
|
||||
options.onToken = function (token) {
|
||||
return tokens.push(token);
|
||||
};
|
||||
})();
|
||||
}
|
||||
if (isArray(options.onComment)) options.onComment = pushComment(options, options.onComment);
|
||||
|
||||
return options;
|
||||
}
|
||||
|
||||
function pushComment(options, array) {
|
||||
return function (block, text, start, end, startLoc, endLoc) {
|
||||
var comment = {
|
||||
type: block ? "Block" : "Line",
|
||||
value: text,
|
||||
start: start,
|
||||
end: end
|
||||
};
|
||||
if (options.locations) comment.loc = new SourceLocation(this, startLoc, endLoc);
|
||||
if (options.ranges) comment.range = [start, end];
|
||||
array.push(comment);
|
||||
};
|
||||
}
|
||||
@ -1,88 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
var tt = require("./tokentype").types;
|
||||
|
||||
var Parser = require("./state").Parser;
|
||||
|
||||
var lineBreak = require("./whitespace").lineBreak;
|
||||
|
||||
var pp = Parser.prototype;
|
||||
|
||||
// ## Parser utilities
|
||||
|
||||
// Test whether a statement node is the string literal `"use strict"`.
|
||||
|
||||
pp.isUseStrict = function (stmt) {
|
||||
return this.options.ecmaVersion >= 5 && stmt.type === "ExpressionStatement" && stmt.expression.type === "Literal" && stmt.expression.value === "use strict";
|
||||
};
|
||||
|
||||
// Predicate that tests whether the next token is of the given
|
||||
// type, and if yes, consumes it as a side effect.
|
||||
|
||||
pp.eat = function (type) {
|
||||
if (this.type === type) {
|
||||
this.next();
|
||||
return true;
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
};
|
||||
|
||||
// Tests whether parsed token is a contextual keyword.
|
||||
|
||||
pp.isContextual = function (name) {
|
||||
return this.type === tt.name && this.value === name;
|
||||
};
|
||||
|
||||
// Consumes contextual keyword if possible.
|
||||
|
||||
pp.eatContextual = function (name) {
|
||||
return this.value === name && this.eat(tt.name);
|
||||
};
|
||||
|
||||
// Asserts that following token is given contextual keyword.
|
||||
|
||||
pp.expectContextual = function (name) {
|
||||
if (!this.eatContextual(name)) this.unexpected();
|
||||
};
|
||||
|
||||
// Test whether a semicolon can be inserted at the current position.
|
||||
|
||||
pp.canInsertSemicolon = function () {
|
||||
return this.type === tt.eof || this.type === tt.braceR || lineBreak.test(this.input.slice(this.lastTokEnd, this.start));
|
||||
};
|
||||
|
||||
pp.insertSemicolon = function () {
|
||||
if (this.canInsertSemicolon()) {
|
||||
if (this.options.onInsertedSemicolon) this.options.onInsertedSemicolon(this.lastTokEnd, this.lastTokEndLoc);
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
// Consume a semicolon, or, failing that, see if we are allowed to
|
||||
// pretend that there is a semicolon at this position.
|
||||
|
||||
pp.semicolon = function () {
|
||||
if (!this.eat(tt.semi) && !this.insertSemicolon()) this.unexpected();
|
||||
};
|
||||
|
||||
pp.afterTrailingComma = function (tokType) {
|
||||
if (this.type == tokType) {
|
||||
if (this.options.onTrailingComma) this.options.onTrailingComma(this.lastTokStart, this.lastTokStartLoc);
|
||||
this.next();
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
// Expect a token of a given type. If found, consume it, otherwise,
|
||||
// raise an unexpected token error.
|
||||
|
||||
pp.expect = function (type) {
|
||||
this.eat(type) || this.unexpected();
|
||||
};
|
||||
|
||||
// Raise an unexpected token error.
|
||||
|
||||
pp.unexpected = function (pos) {
|
||||
this.raise(pos != null ? pos : this.start, "Unexpected token");
|
||||
};
|
||||
@ -1,85 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
exports.Parser = Parser;
|
||||
exports.__esModule = true;
|
||||
|
||||
var _identifier = require("./identifier");
|
||||
|
||||
var reservedWords = _identifier.reservedWords;
|
||||
var keywords = _identifier.keywords;
|
||||
|
||||
var _tokentype = require("./tokentype");
|
||||
|
||||
var tt = _tokentype.types;
|
||||
var lineBreak = _tokentype.lineBreak;
|
||||
|
||||
function Parser(options, input, startPos) {
|
||||
this.options = options;
|
||||
this.loadPlugins(this.options.plugins);
|
||||
this.sourceFile = this.options.sourceFile || null;
|
||||
this.isKeyword = keywords[this.options.ecmaVersion >= 6 ? 6 : 5];
|
||||
this.isReservedWord = reservedWords[this.options.ecmaVersion];
|
||||
this.input = input;
|
||||
|
||||
// Set up token state
|
||||
|
||||
// The current position of the tokenizer in the input.
|
||||
if (startPos) {
|
||||
this.pos = startPos;
|
||||
this.lineStart = Math.max(0, this.input.lastIndexOf("\n", startPos));
|
||||
this.curLine = this.input.slice(0, this.lineStart).split(lineBreak).length;
|
||||
} else {
|
||||
this.pos = this.lineStart = 0;
|
||||
this.curLine = 1;
|
||||
}
|
||||
|
||||
// Properties of the current token:
|
||||
// Its type
|
||||
this.type = tt.eof;
|
||||
// For tokens that include more information than their type, the value
|
||||
this.value = null;
|
||||
// Its start and end offset
|
||||
this.start = this.end = this.pos;
|
||||
// And, if locations are used, the {line, column} object
|
||||
// corresponding to those offsets
|
||||
this.startLoc = this.endLoc = null;
|
||||
|
||||
// Position information for the previous token
|
||||
this.lastTokEndLoc = this.lastTokStartLoc = null;
|
||||
this.lastTokStart = this.lastTokEnd = this.pos;
|
||||
|
||||
// The context stack is used to superficially track syntactic
|
||||
// context to predict whether a regular expression is allowed in a
|
||||
// given position.
|
||||
this.context = this.initialContext();
|
||||
this.exprAllowed = true;
|
||||
|
||||
// Figure out if it's a module code.
|
||||
this.inModule = this.options.sourceType === "module";
|
||||
this.strict = this.options.strictMode === false ? false : this.inModule;
|
||||
|
||||
// Flags to track whether we are in a function, a generator.
|
||||
this.inFunction = this.inGenerator = false;
|
||||
// Labels in scope.
|
||||
this.labels = [];
|
||||
|
||||
// If enabled, skip leading hashbang line.
|
||||
if (this.pos === 0 && this.options.allowHashBang && this.input.slice(0, 2) === "#!") this.skipLineComment(2);
|
||||
}
|
||||
|
||||
Parser.prototype.extend = function (name, f) {
|
||||
this[name] = f(this[name]);
|
||||
};
|
||||
|
||||
// Registered plugins
|
||||
|
||||
var plugins = {};
|
||||
|
||||
exports.plugins = plugins;
|
||||
Parser.prototype.loadPlugins = function (plugins) {
|
||||
for (var _name in plugins) {
|
||||
var plugin = exports.plugins[_name];
|
||||
if (!plugin) throw new Error("Plugin '" + _name + "' not found");
|
||||
plugin(this, plugins[_name]);
|
||||
}
|
||||
};
|
||||
@ -1,666 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
var tt = require("./tokentype").types;
|
||||
|
||||
var Parser = require("./state").Parser;
|
||||
|
||||
var lineBreak = require("./whitespace").lineBreak;
|
||||
|
||||
var pp = Parser.prototype;
|
||||
|
||||
// ### Statement parsing
|
||||
|
||||
// Parse a program. Initializes the parser, reads any number of
|
||||
// statements, and wraps them in a Program node. Optionally takes a
|
||||
// `program` argument. If present, the statements will be appended
|
||||
// to its body instead of creating a new node.
|
||||
|
||||
pp.parseTopLevel = function (node) {
|
||||
var first = true;
|
||||
if (!node.body) node.body = [];
|
||||
while (this.type !== tt.eof) {
|
||||
var stmt = this.parseStatement(true, true);
|
||||
node.body.push(stmt);
|
||||
if (first && this.isUseStrict(stmt)) this.setStrict(true);
|
||||
first = false;
|
||||
}
|
||||
this.next();
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
node.sourceType = this.options.sourceType;
|
||||
}
|
||||
return this.finishNode(node, "Program");
|
||||
};
|
||||
|
||||
var loopLabel = { kind: "loop" },
|
||||
switchLabel = { kind: "switch" };
|
||||
|
||||
// Parse a single statement.
|
||||
//
|
||||
// If expecting a statement and finding a slash operator, parse a
|
||||
// regular expression literal. This is to handle cases like
|
||||
// `if (foo) /blah/.exec(foo)`, where looking at the previous token
|
||||
// does not help.
|
||||
|
||||
pp.parseStatement = function (declaration, topLevel) {
|
||||
var starttype = this.type,
|
||||
node = this.startNode();
|
||||
|
||||
// Most types of statements are recognized by the keyword they
|
||||
// start with. Many are trivial to parse, some require a bit of
|
||||
// complexity.
|
||||
|
||||
switch (starttype) {
|
||||
case tt._break:case tt._continue:
|
||||
return this.parseBreakContinueStatement(node, starttype.keyword);
|
||||
case tt._debugger:
|
||||
return this.parseDebuggerStatement(node);
|
||||
case tt._do:
|
||||
return this.parseDoStatement(node);
|
||||
case tt._for:
|
||||
return this.parseForStatement(node);
|
||||
case tt._function:
|
||||
if (!declaration && this.options.ecmaVersion >= 6) this.unexpected();
|
||||
return this.parseFunctionStatement(node);
|
||||
case tt._class:
|
||||
if (!declaration) this.unexpected();
|
||||
return this.parseClass(node, true);
|
||||
case tt._if:
|
||||
return this.parseIfStatement(node);
|
||||
case tt._return:
|
||||
return this.parseReturnStatement(node);
|
||||
case tt._switch:
|
||||
return this.parseSwitchStatement(node);
|
||||
case tt._throw:
|
||||
return this.parseThrowStatement(node);
|
||||
case tt._try:
|
||||
return this.parseTryStatement(node);
|
||||
case tt._let:case tt._const:
|
||||
if (!declaration) this.unexpected(); // NOTE: falls through to _var
|
||||
case tt._var:
|
||||
return this.parseVarStatement(node, starttype);
|
||||
case tt._while:
|
||||
return this.parseWhileStatement(node);
|
||||
case tt._with:
|
||||
return this.parseWithStatement(node);
|
||||
case tt.braceL:
|
||||
return this.parseBlock();
|
||||
case tt.semi:
|
||||
return this.parseEmptyStatement(node);
|
||||
case tt._export:
|
||||
case tt._import:
|
||||
if (!this.options.allowImportExportEverywhere) {
|
||||
if (!topLevel) this.raise(this.start, "'import' and 'export' may only appear at the top level");
|
||||
if (!this.inModule) this.raise(this.start, "'import' and 'export' may appear only with 'sourceType: module'");
|
||||
}
|
||||
return starttype === tt._import ? this.parseImport(node) : this.parseExport(node);
|
||||
|
||||
case tt.name:
|
||||
if (this.options.features["es7.asyncFunctions"] && this.value === "async") {
|
||||
// check to see if `function ` appears after this token, this is
|
||||
// pretty hacky
|
||||
if (this.lookahead().type === tt._function) {
|
||||
this.next();
|
||||
this.expect(tt._function);
|
||||
return this.parseFunction(node, true, false, true);
|
||||
}
|
||||
}
|
||||
|
||||
// If the statement does not start with a statement keyword or a
|
||||
// brace, it's an ExpressionStatement or LabeledStatement. We
|
||||
// simply start parsing an expression, and afterwards, if the
|
||||
// next token is a colon and the expression was a simple
|
||||
// Identifier node, we switch to interpreting it as a label.
|
||||
default:
|
||||
var maybeName = this.value,
|
||||
expr = this.parseExpression();
|
||||
if (starttype === tt.name && expr.type === "Identifier" && this.eat(tt.colon)) return this.parseLabeledStatement(node, maybeName, expr);else return this.parseExpressionStatement(node, expr);
|
||||
}
|
||||
};
|
||||
|
||||
pp.parseBreakContinueStatement = function (node, keyword) {
|
||||
var isBreak = keyword == "break";
|
||||
this.next();
|
||||
if (this.eat(tt.semi) || this.insertSemicolon()) node.label = null;else if (this.type !== tt.name) this.unexpected();else {
|
||||
node.label = this.parseIdent();
|
||||
this.semicolon();
|
||||
}
|
||||
|
||||
// Verify that there is an actual destination to break or
|
||||
// continue to.
|
||||
for (var i = 0; i < this.labels.length; ++i) {
|
||||
var lab = this.labels[i];
|
||||
if (node.label == null || lab.name === node.label.name) {
|
||||
if (lab.kind != null && (isBreak || lab.kind === "loop")) break;
|
||||
if (node.label && isBreak) break;
|
||||
}
|
||||
}
|
||||
if (i === this.labels.length) this.raise(node.start, "Unsyntactic " + keyword);
|
||||
return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement");
|
||||
};
|
||||
|
||||
pp.parseDebuggerStatement = function (node) {
|
||||
this.next();
|
||||
this.semicolon();
|
||||
return this.finishNode(node, "DebuggerStatement");
|
||||
};
|
||||
|
||||
pp.parseDoStatement = function (node) {
|
||||
this.next();
|
||||
this.labels.push(loopLabel);
|
||||
node.body = this.parseStatement(false);
|
||||
this.labels.pop();
|
||||
this.expect(tt._while);
|
||||
node.test = this.parseParenExpression();
|
||||
if (this.options.ecmaVersion >= 6) this.eat(tt.semi);else this.semicolon();
|
||||
return this.finishNode(node, "DoWhileStatement");
|
||||
};
|
||||
|
||||
// Disambiguating between a `for` and a `for`/`in` or `for`/`of`
|
||||
// loop is non-trivial. Basically, we have to parse the init `var`
|
||||
// statement or expression, disallowing the `in` operator (see
|
||||
// the second parameter to `parseExpression`), and then check
|
||||
// whether the next token is `in` or `of`. When there is no init
|
||||
// part (semicolon immediately after the opening parenthesis), it
|
||||
// is a regular `for` loop.
|
||||
|
||||
pp.parseForStatement = function (node) {
|
||||
this.next();
|
||||
this.labels.push(loopLabel);
|
||||
this.expect(tt.parenL);
|
||||
if (this.type === tt.semi) return this.parseFor(node, null);
|
||||
if (this.type === tt._var || this.type === tt._let || this.type === tt._const) {
|
||||
var _init = this.startNode(),
|
||||
varKind = this.type;
|
||||
this.next();
|
||||
this.parseVar(_init, true, varKind);
|
||||
this.finishNode(_init, "VariableDeclaration");
|
||||
if ((this.type === tt._in || this.options.ecmaVersion >= 6 && this.isContextual("of")) && _init.declarations.length === 1 && !(varKind !== tt._var && _init.declarations[0].init)) return this.parseForIn(node, _init);
|
||||
return this.parseFor(node, _init);
|
||||
}
|
||||
var refShorthandDefaultPos = { start: 0 };
|
||||
var init = this.parseExpression(true, refShorthandDefaultPos);
|
||||
if (this.type === tt._in || this.options.ecmaVersion >= 6 && this.isContextual("of")) {
|
||||
this.toAssignable(init);
|
||||
this.checkLVal(init);
|
||||
return this.parseForIn(node, init);
|
||||
} else if (refShorthandDefaultPos.start) {
|
||||
this.unexpected(refShorthandDefaultPos.start);
|
||||
}
|
||||
return this.parseFor(node, init);
|
||||
};
|
||||
|
||||
pp.parseFunctionStatement = function (node) {
|
||||
this.next();
|
||||
return this.parseFunction(node, true);
|
||||
};
|
||||
|
||||
pp.parseIfStatement = function (node) {
|
||||
this.next();
|
||||
node.test = this.parseParenExpression();
|
||||
node.consequent = this.parseStatement(false);
|
||||
node.alternate = this.eat(tt._else) ? this.parseStatement(false) : null;
|
||||
return this.finishNode(node, "IfStatement");
|
||||
};
|
||||
|
||||
pp.parseReturnStatement = function (node) {
|
||||
if (!this.inFunction && !this.options.allowReturnOutsideFunction) this.raise(this.start, "'return' outside of function");
|
||||
this.next();
|
||||
|
||||
// In `return` (and `break`/`continue`), the keywords with
|
||||
// optional arguments, we eagerly look for a semicolon or the
|
||||
// possibility to insert one.
|
||||
|
||||
if (this.eat(tt.semi) || this.insertSemicolon()) node.argument = null;else {
|
||||
node.argument = this.parseExpression();this.semicolon();
|
||||
}
|
||||
return this.finishNode(node, "ReturnStatement");
|
||||
};
|
||||
|
||||
pp.parseSwitchStatement = function (node) {
|
||||
this.next();
|
||||
node.discriminant = this.parseParenExpression();
|
||||
node.cases = [];
|
||||
this.expect(tt.braceL);
|
||||
this.labels.push(switchLabel);
|
||||
|
||||
// Statements under must be grouped (by label) in SwitchCase
|
||||
// nodes. `cur` is used to keep the node that we are currently
|
||||
// adding statements to.
|
||||
|
||||
for (var cur, sawDefault; this.type != tt.braceR;) {
|
||||
if (this.type === tt._case || this.type === tt._default) {
|
||||
var isCase = this.type === tt._case;
|
||||
if (cur) this.finishNode(cur, "SwitchCase");
|
||||
node.cases.push(cur = this.startNode());
|
||||
cur.consequent = [];
|
||||
this.next();
|
||||
if (isCase) {
|
||||
cur.test = this.parseExpression();
|
||||
} else {
|
||||
if (sawDefault) this.raise(this.lastTokStart, "Multiple default clauses");
|
||||
sawDefault = true;
|
||||
cur.test = null;
|
||||
}
|
||||
this.expect(tt.colon);
|
||||
} else {
|
||||
if (!cur) this.unexpected();
|
||||
cur.consequent.push(this.parseStatement(true));
|
||||
}
|
||||
}
|
||||
if (cur) this.finishNode(cur, "SwitchCase");
|
||||
this.next(); // Closing brace
|
||||
this.labels.pop();
|
||||
return this.finishNode(node, "SwitchStatement");
|
||||
};
|
||||
|
||||
pp.parseThrowStatement = function (node) {
|
||||
this.next();
|
||||
if (lineBreak.test(this.input.slice(this.lastTokEnd, this.start))) this.raise(this.lastTokEnd, "Illegal newline after throw");
|
||||
node.argument = this.parseExpression();
|
||||
this.semicolon();
|
||||
return this.finishNode(node, "ThrowStatement");
|
||||
};
|
||||
|
||||
// Reused empty array added for node fields that are always empty.
|
||||
|
||||
var empty = [];
|
||||
|
||||
pp.parseTryStatement = function (node) {
|
||||
this.next();
|
||||
node.block = this.parseBlock();
|
||||
node.handler = null;
|
||||
if (this.type === tt._catch) {
|
||||
var clause = this.startNode();
|
||||
this.next();
|
||||
this.expect(tt.parenL);
|
||||
clause.param = this.parseBindingAtom();
|
||||
this.checkLVal(clause.param, true);
|
||||
this.expect(tt.parenR);
|
||||
clause.guard = null;
|
||||
clause.body = this.parseBlock();
|
||||
node.handler = this.finishNode(clause, "CatchClause");
|
||||
}
|
||||
node.guardedHandlers = empty;
|
||||
node.finalizer = this.eat(tt._finally) ? this.parseBlock() : null;
|
||||
if (!node.handler && !node.finalizer) this.raise(node.start, "Missing catch or finally clause");
|
||||
return this.finishNode(node, "TryStatement");
|
||||
};
|
||||
|
||||
pp.parseVarStatement = function (node, kind) {
|
||||
this.next();
|
||||
this.parseVar(node, false, kind);
|
||||
this.semicolon();
|
||||
return this.finishNode(node, "VariableDeclaration");
|
||||
};
|
||||
|
||||
pp.parseWhileStatement = function (node) {
|
||||
this.next();
|
||||
node.test = this.parseParenExpression();
|
||||
this.labels.push(loopLabel);
|
||||
node.body = this.parseStatement(false);
|
||||
this.labels.pop();
|
||||
return this.finishNode(node, "WhileStatement");
|
||||
};
|
||||
|
||||
pp.parseWithStatement = function (node) {
|
||||
if (this.strict) this.raise(this.start, "'with' in strict mode");
|
||||
this.next();
|
||||
node.object = this.parseParenExpression();
|
||||
node.body = this.parseStatement(false);
|
||||
return this.finishNode(node, "WithStatement");
|
||||
};
|
||||
|
||||
pp.parseEmptyStatement = function (node) {
|
||||
this.next();
|
||||
return this.finishNode(node, "EmptyStatement");
|
||||
};
|
||||
|
||||
pp.parseLabeledStatement = function (node, maybeName, expr) {
|
||||
for (var i = 0; i < this.labels.length; ++i) {
|
||||
if (this.labels[i].name === maybeName) this.raise(expr.start, "Label '" + maybeName + "' is already declared");
|
||||
}var kind = this.type.isLoop ? "loop" : this.type === tt._switch ? "switch" : null;
|
||||
this.labels.push({ name: maybeName, kind: kind });
|
||||
node.body = this.parseStatement(true);
|
||||
this.labels.pop();
|
||||
node.label = expr;
|
||||
return this.finishNode(node, "LabeledStatement");
|
||||
};
|
||||
|
||||
pp.parseExpressionStatement = function (node, expr) {
|
||||
node.expression = expr;
|
||||
this.semicolon();
|
||||
return this.finishNode(node, "ExpressionStatement");
|
||||
};
|
||||
|
||||
// Parse a semicolon-enclosed block of statements, handling `"use
|
||||
// strict"` declarations when `allowStrict` is true (used for
|
||||
// function bodies).
|
||||
|
||||
pp.parseBlock = function (allowStrict) {
|
||||
var node = this.startNode(),
|
||||
first = true,
|
||||
oldStrict = undefined;
|
||||
node.body = [];
|
||||
this.expect(tt.braceL);
|
||||
while (!this.eat(tt.braceR)) {
|
||||
var stmt = this.parseStatement(true);
|
||||
node.body.push(stmt);
|
||||
if (first && allowStrict && this.isUseStrict(stmt)) {
|
||||
oldStrict = this.strict;
|
||||
this.setStrict(this.strict = true);
|
||||
}
|
||||
first = false;
|
||||
}
|
||||
if (oldStrict === false) this.setStrict(false);
|
||||
return this.finishNode(node, "BlockStatement");
|
||||
};
|
||||
|
||||
// Parse a regular `for` loop. The disambiguation code in
|
||||
// `parseStatement` will already have parsed the init statement or
|
||||
// expression.
|
||||
|
||||
pp.parseFor = function (node, init) {
|
||||
node.init = init;
|
||||
this.expect(tt.semi);
|
||||
node.test = this.type === tt.semi ? null : this.parseExpression();
|
||||
this.expect(tt.semi);
|
||||
node.update = this.type === tt.parenR ? null : this.parseExpression();
|
||||
this.expect(tt.parenR);
|
||||
node.body = this.parseStatement(false);
|
||||
this.labels.pop();
|
||||
return this.finishNode(node, "ForStatement");
|
||||
};
|
||||
|
||||
// Parse a `for`/`in` and `for`/`of` loop, which are almost
|
||||
// same from parser's perspective.
|
||||
|
||||
pp.parseForIn = function (node, init) {
|
||||
var type = this.type === tt._in ? "ForInStatement" : "ForOfStatement";
|
||||
this.next();
|
||||
node.left = init;
|
||||
node.right = this.parseExpression();
|
||||
this.expect(tt.parenR);
|
||||
node.body = this.parseStatement(false);
|
||||
this.labels.pop();
|
||||
return this.finishNode(node, type);
|
||||
};
|
||||
|
||||
// Parse a list of variable declarations.
|
||||
|
||||
pp.parseVar = function (node, isFor, kind) {
|
||||
node.declarations = [];
|
||||
node.kind = kind.keyword;
|
||||
for (;;) {
|
||||
var decl = this.startNode();
|
||||
this.parseVarHead(decl);
|
||||
if (this.eat(tt.eq)) {
|
||||
decl.init = this.parseMaybeAssign(isFor);
|
||||
} else if (kind === tt._const && !(this.type === tt._in || this.options.ecmaVersion >= 6 && this.isContextual("of"))) {
|
||||
this.unexpected();
|
||||
} else if (decl.id.type != "Identifier" && !(isFor && (this.type === tt._in || this.isContextual("of")))) {
|
||||
this.raise(this.lastTokEnd, "Complex binding patterns require an initialization value");
|
||||
} else {
|
||||
decl.init = null;
|
||||
}
|
||||
node.declarations.push(this.finishNode(decl, "VariableDeclarator"));
|
||||
if (!this.eat(tt.comma)) break;
|
||||
}
|
||||
return node;
|
||||
};
|
||||
|
||||
pp.parseVarHead = function (decl) {
|
||||
decl.id = this.parseBindingAtom();
|
||||
this.checkLVal(decl.id, true);
|
||||
};
|
||||
|
||||
// Parse a function declaration or literal (depending on the
|
||||
// `isStatement` parameter).
|
||||
|
||||
pp.parseFunction = function (node, isStatement, allowExpressionBody, isAsync) {
|
||||
this.initFunction(node, isAsync);
|
||||
if (this.options.ecmaVersion >= 6) node.generator = this.eat(tt.star);
|
||||
if (isStatement || this.type === tt.name) node.id = this.parseIdent();
|
||||
this.parseFunctionParams(node);
|
||||
this.parseFunctionBody(node, allowExpressionBody);
|
||||
return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression");
|
||||
};
|
||||
|
||||
pp.parseFunctionParams = function (node) {
|
||||
this.expect(tt.parenL);
|
||||
node.params = this.parseBindingList(tt.parenR, false, false);
|
||||
};
|
||||
|
||||
// Parse a class declaration or literal (depending on the
|
||||
// `isStatement` parameter).
|
||||
|
||||
pp.parseClass = function (node, isStatement) {
|
||||
this.next();
|
||||
node.id = this.type === tt.name ? this.parseIdent() : isStatement ? this.unexpected() : null;
|
||||
node.superClass = this.eat(tt._extends) ? this.parseExprSubscripts() : null;
|
||||
var classBody = this.startNode();
|
||||
classBody.body = [];
|
||||
this.expect(tt.braceL);
|
||||
while (!this.eat(tt.braceR)) {
|
||||
if (this.eat(tt.semi)) continue;
|
||||
var method = this.startNode();
|
||||
var isGenerator = this.eat(tt.star);
|
||||
this.parsePropertyName(method);
|
||||
if (this.type !== tt.parenL && !method.computed && method.key.type === "Identifier" && method.key.name === "static") {
|
||||
if (isGenerator) this.unexpected();
|
||||
method["static"] = true;
|
||||
isGenerator = this.eat(tt.star);
|
||||
this.parsePropertyName(method);
|
||||
} else {
|
||||
method["static"] = false;
|
||||
}
|
||||
if (this.options.features["es7.asyncFunctions"] && this.type !== tt.parenL && !method.computed && method.key.type === "Identifier" && method.key.name === "async") {
|
||||
isAsync = true;
|
||||
this.parsePropertyName(method);
|
||||
}
|
||||
method.kind = "method";
|
||||
if (!method.computed && !isGenerator) {
|
||||
if (method.key.type === "Identifier") {
|
||||
if (this.type !== tt.parenL && (method.key.name === "get" || method.key.name === "set")) {
|
||||
method.kind = method.key.name;
|
||||
this.parsePropertyName(method);
|
||||
} else if (!method["static"] && method.key.name === "constructor") {
|
||||
method.kind = "constructor";
|
||||
}
|
||||
} else if (!method["static"] && method.key.type === "Literal" && method.key.value === "constructor") {
|
||||
method.kind = "constructor";
|
||||
}
|
||||
}
|
||||
method.value = this.parseMethod(isGenerator);
|
||||
classBody.body.push(this.finishNode(method, "MethodDefinition"));
|
||||
}
|
||||
node.body = this.finishNode(classBody, "ClassBody");
|
||||
return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression");
|
||||
};
|
||||
|
||||
pp.parseClass = function (node, isStatement) {
|
||||
this.next();
|
||||
this.parseClassId(node, isStatement);
|
||||
this.parseClassSuper(node);
|
||||
var classBody = this.startNode();
|
||||
classBody.body = [];
|
||||
this.expect(tt.braceL);
|
||||
while (!this.eat(tt.braceR)) {
|
||||
if (this.eat(tt.semi)) continue;
|
||||
var method = this.startNode();
|
||||
var isGenerator = this.eat(tt.star),
|
||||
isAsync = false;
|
||||
this.parsePropertyName(method);
|
||||
if (this.type !== tt.parenL && !method.computed && method.key.type === "Identifier" && method.key.name === "static") {
|
||||
if (isGenerator) this.unexpected();
|
||||
method["static"] = true;
|
||||
isGenerator = this.eat(tt.star);
|
||||
this.parsePropertyName(method);
|
||||
} else {
|
||||
method["static"] = false;
|
||||
}
|
||||
if (this.options.features["es7.asyncFunctions"] && this.type !== tt.parenL && !method.computed && method.key.type === "Identifier" && method.key.name === "async") {
|
||||
isAsync = true;
|
||||
this.parsePropertyName(method);
|
||||
}
|
||||
method.kind = "method";
|
||||
if (!method.computed && !isGenerator) {
|
||||
if (method.key.type === "Identifier") {
|
||||
if (this.type !== tt.parenL && (method.key.name === "get" || method.key.name === "set")) {
|
||||
method.kind = method.key.name;
|
||||
this.parsePropertyName(method);
|
||||
} else if (!method["static"] && method.key.name === "constructor") {
|
||||
method.kind = "constructor";
|
||||
}
|
||||
} else if (!method["static"] && method.key.type === "Literal" && method.key.value === "constructor") {
|
||||
method.kind = "constructor";
|
||||
}
|
||||
}
|
||||
this.parseClassMethod(classBody, method, isGenerator, isAsync);
|
||||
}
|
||||
node.body = this.finishNode(classBody, "ClassBody");
|
||||
return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression");
|
||||
};
|
||||
|
||||
pp.parseClassMethod = function (classBody, method, isGenerator, isAsync) {
|
||||
method.value = this.parseMethod(isGenerator, isAsync);
|
||||
classBody.body.push(this.finishNode(method, "MethodDefinition"));
|
||||
};
|
||||
|
||||
pp.parseClassId = function (node, isStatement) {
|
||||
node.id = this.type === tt.name ? this.parseIdent() : isStatement ? this.unexpected() : null;
|
||||
};
|
||||
|
||||
pp.parseClassSuper = function (node) {
|
||||
node.superClass = this.eat(tt._extends) ? this.parseExprSubscripts() : null;
|
||||
};
|
||||
|
||||
// Parses module export declaration.
|
||||
|
||||
pp.parseExport = function (node) {
|
||||
this.next();
|
||||
// export * from '...'
|
||||
if (this.eat(tt.star)) {
|
||||
this.expectContextual("from");
|
||||
node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected();
|
||||
this.semicolon();
|
||||
return this.finishNode(node, "ExportAllDeclaration");
|
||||
}
|
||||
if (this.eat(tt._default)) {
|
||||
// export default ...
|
||||
var expr = this.parseMaybeAssign();
|
||||
var needsSemi = false;
|
||||
if (expr.id) switch (expr.type) {
|
||||
case "FunctionExpression":
|
||||
expr.type = "FunctionDeclaration";break;
|
||||
case "ClassExpression":
|
||||
expr.type = "ClassDeclaration";break;
|
||||
default:
|
||||
needsSemi = true;
|
||||
}
|
||||
node.declaration = expr;
|
||||
if (needsSemi) this.semicolon();
|
||||
return this.finishNode(node, "ExportDefaultDeclaration");
|
||||
}
|
||||
// export var|const|let|function|class ...
|
||||
if (this.type.keyword || this.shouldParseExportDeclaration()) {
|
||||
node.declaration = this.parseStatement(true);
|
||||
node.specifiers = [];
|
||||
node.source = null;
|
||||
} else {
|
||||
// export { x, y as z } [from '...']
|
||||
node.declaration = null;
|
||||
node.specifiers = this.parseExportSpecifiers();
|
||||
if (this.eatContextual("from")) {
|
||||
node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected();
|
||||
} else {
|
||||
node.source = null;
|
||||
}
|
||||
this.semicolon();
|
||||
}
|
||||
return this.finishNode(node, "ExportNamedDeclaration");
|
||||
};
|
||||
|
||||
pp.shouldParseExportDeclaration = function () {
|
||||
return this.options.features["es7.asyncFunctions"] && this.isContextual("async");
|
||||
};
|
||||
|
||||
// Parses a comma-separated list of module exports.
|
||||
|
||||
pp.parseExportSpecifiers = function () {
|
||||
var nodes = [],
|
||||
first = true;
|
||||
// export { x, y as z } [from '...']
|
||||
this.expect(tt.braceL);
|
||||
while (!this.eat(tt.braceR)) {
|
||||
if (!first) {
|
||||
this.expect(tt.comma);
|
||||
if (this.afterTrailingComma(tt.braceR)) break;
|
||||
} else first = false;
|
||||
|
||||
var node = this.startNode();
|
||||
node.local = this.parseIdent(this.type === tt._default);
|
||||
node.exported = this.eatContextual("as") ? this.parseIdent(true) : node.local;
|
||||
nodes.push(this.finishNode(node, "ExportSpecifier"));
|
||||
}
|
||||
return nodes;
|
||||
};
|
||||
|
||||
// Parses import declaration.
|
||||
|
||||
pp.parseImport = function (node) {
|
||||
this.next();
|
||||
// import '...'
|
||||
if (this.type === tt.string) {
|
||||
node.specifiers = empty;
|
||||
node.source = this.parseExprAtom();
|
||||
node.kind = "";
|
||||
} else {
|
||||
node.specifiers = [];
|
||||
this.parseImportSpecifiers(node);
|
||||
this.expectContextual("from");
|
||||
node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected();
|
||||
}
|
||||
this.semicolon();
|
||||
return this.finishNode(node, "ImportDeclaration");
|
||||
};
|
||||
|
||||
// Parses a comma-separated list of module imports.
|
||||
|
||||
pp.parseImportSpecifiers = function (node) {
|
||||
var first = true;
|
||||
if (this.type === tt.name) {
|
||||
// import defaultObj, { x, y as z } from '...'
|
||||
var start = this.markPosition();
|
||||
node.specifiers.push(this.parseImportSpecifierDefault(this.parseIdent(), start));
|
||||
if (!this.eat(tt.comma)) return;
|
||||
}
|
||||
if (this.type === tt.star) {
|
||||
var specifier = this.startNode();
|
||||
this.next();
|
||||
this.expectContextual("as");
|
||||
specifier.local = this.parseIdent();
|
||||
this.checkLVal(specifier.local, true);
|
||||
node.specifiers.push(this.finishNode(specifier, "ImportNamespaceSpecifier"));
|
||||
return;
|
||||
}
|
||||
this.expect(tt.braceL);
|
||||
while (!this.eat(tt.braceR)) {
|
||||
if (!first) {
|
||||
this.expect(tt.comma);
|
||||
if (this.afterTrailingComma(tt.braceR)) break;
|
||||
} else first = false;
|
||||
|
||||
var specifier = this.startNode();
|
||||
specifier.imported = this.parseIdent(true);
|
||||
specifier.local = this.eatContextual("as") ? this.parseIdent() : specifier.imported;
|
||||
this.checkLVal(specifier.local, true);
|
||||
node.specifiers.push(this.finishNode(specifier, "ImportSpecifier"));
|
||||
}
|
||||
};
|
||||
|
||||
pp.parseImportSpecifierDefault = function (id, start) {
|
||||
var node = this.startNodeAt(start);
|
||||
node.local = id;
|
||||
this.checkLVal(node.local, true);
|
||||
return this.finishNode(node, "ImportDefaultSpecifier");
|
||||
};
|
||||
@ -1,101 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } };
|
||||
|
||||
exports.__esModule = true;
|
||||
// The algorithm used to determine whether a regexp can appear at a
|
||||
// given point in the program is loosely based on sweet.js' approach.
|
||||
// See https://github.com/mozilla/sweet.js/wiki/design
|
||||
|
||||
var Parser = require("./state").Parser;
|
||||
|
||||
var tt = require("./tokentype").types;
|
||||
|
||||
var lineBreak = require("./whitespace").lineBreak;
|
||||
|
||||
var TokContext = exports.TokContext = function TokContext(token, isExpr, preserveSpace, override) {
|
||||
_classCallCheck(this, TokContext);
|
||||
|
||||
this.token = token;
|
||||
this.isExpr = isExpr;
|
||||
this.preserveSpace = preserveSpace;
|
||||
this.override = override;
|
||||
};
|
||||
|
||||
var types = {
|
||||
b_stat: new TokContext("{", false),
|
||||
b_expr: new TokContext("{", true),
|
||||
b_tmpl: new TokContext("${", true),
|
||||
p_stat: new TokContext("(", false),
|
||||
p_expr: new TokContext("(", true),
|
||||
q_tmpl: new TokContext("`", true, true, function (p) {
|
||||
return p.readTmplToken();
|
||||
}),
|
||||
f_expr: new TokContext("function", true)
|
||||
};
|
||||
|
||||
exports.types = types;
|
||||
var pp = Parser.prototype;
|
||||
|
||||
pp.initialContext = function () {
|
||||
return [types.b_stat];
|
||||
};
|
||||
|
||||
pp.braceIsBlock = function (prevType) {
|
||||
var parent = undefined;
|
||||
if (prevType === tt.colon && (parent = this.curContext()).token == "{") return !parent.isExpr;
|
||||
if (prevType === tt._return) return lineBreak.test(this.input.slice(this.lastTokEnd, this.start));
|
||||
if (prevType === tt._else || prevType === tt.semi || prevType === tt.eof) return true;
|
||||
if (prevType == tt.braceL) return this.curContext() === types.b_stat;
|
||||
return !this.exprAllowed;
|
||||
};
|
||||
|
||||
pp.updateContext = function (prevType) {
|
||||
var update = undefined,
|
||||
type = this.type;
|
||||
if (type.keyword && prevType == tt.dot) this.exprAllowed = false;else if (update = type.updateContext) update.call(this, prevType);else this.exprAllowed = type.beforeExpr;
|
||||
};
|
||||
|
||||
// Token-specific context update code
|
||||
|
||||
tt.parenR.updateContext = tt.braceR.updateContext = function () {
|
||||
var out = this.context.pop();
|
||||
if (out === types.b_stat && this.curContext() === types.f_expr) {
|
||||
this.context.pop();
|
||||
this.exprAllowed = false;
|
||||
} else if (out === types.b_tmpl) {
|
||||
this.exprAllowed = true;
|
||||
} else {
|
||||
this.exprAllowed = !(out && out.isExpr);
|
||||
}
|
||||
};
|
||||
|
||||
tt.braceL.updateContext = function (prevType) {
|
||||
this.context.push(this.braceIsBlock(prevType) ? types.b_stat : types.b_expr);
|
||||
this.exprAllowed = true;
|
||||
};
|
||||
|
||||
tt.dollarBraceL.updateContext = function () {
|
||||
this.context.push(types.b_tmpl);
|
||||
this.exprAllowed = true;
|
||||
};
|
||||
|
||||
tt.parenL.updateContext = function (prevType) {
|
||||
var statementParens = prevType === tt._if || prevType === tt._for || prevType === tt._with || prevType === tt._while;
|
||||
this.context.push(statementParens ? types.p_stat : types.p_expr);
|
||||
this.exprAllowed = true;
|
||||
};
|
||||
|
||||
tt.incDec.updateContext = function () {};
|
||||
|
||||
tt._function.updateContext = function () {
|
||||
if (this.curContext() !== types.b_stat) this.context.push(types.f_expr);
|
||||
this.exprAllowed = false;
|
||||
};
|
||||
|
||||
tt.backQuote.updateContext = function () {
|
||||
if (this.curContext() === types.q_tmpl) this.context.pop();else this.context.push(types.q_tmpl);
|
||||
this.exprAllowed = false;
|
||||
};
|
||||
|
||||
// tokExprAllowed stays unchanged
|
||||
@ -1,753 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } };
|
||||
|
||||
exports.__esModule = true;
|
||||
|
||||
var _identifier = require("./identifier");
|
||||
|
||||
var isIdentifierStart = _identifier.isIdentifierStart;
|
||||
var isIdentifierChar = _identifier.isIdentifierChar;
|
||||
|
||||
var _tokentype = require("./tokentype");
|
||||
|
||||
var tt = _tokentype.types;
|
||||
var keywordTypes = _tokentype.keywords;
|
||||
|
||||
var Parser = require("./state").Parser;
|
||||
|
||||
var SourceLocation = require("./location").SourceLocation;
|
||||
|
||||
var _whitespace = require("./whitespace");
|
||||
|
||||
var lineBreak = _whitespace.lineBreak;
|
||||
var lineBreakG = _whitespace.lineBreakG;
|
||||
var isNewLine = _whitespace.isNewLine;
|
||||
var nonASCIIwhitespace = _whitespace.nonASCIIwhitespace;
|
||||
|
||||
// Object type used to represent tokens. Note that normally, tokens
|
||||
// simply exist as properties on the parser object. This is only
|
||||
// used for the onToken callback and the external tokenizer.
|
||||
|
||||
var Token = exports.Token = function Token(p) {
|
||||
_classCallCheck(this, Token);
|
||||
|
||||
this.type = p.type;
|
||||
this.value = p.value;
|
||||
this.start = p.start;
|
||||
this.end = p.end;
|
||||
if (p.options.locations) this.loc = new SourceLocation(p, p.startLoc, p.endLoc);
|
||||
if (p.options.ranges) this.range = [p.start, p.end];
|
||||
};
|
||||
|
||||
// ## Tokenizer
|
||||
|
||||
var pp = Parser.prototype;
|
||||
|
||||
// Move to the next token
|
||||
|
||||
pp.next = function () {
|
||||
if (this.options.onToken) this.options.onToken(new Token(this));
|
||||
|
||||
this.lastTokEnd = this.end;
|
||||
this.lastTokStart = this.start;
|
||||
this.lastTokEndLoc = this.endLoc;
|
||||
this.lastTokStartLoc = this.startLoc;
|
||||
this.nextToken();
|
||||
};
|
||||
|
||||
pp.getToken = function () {
|
||||
this.next();
|
||||
return new Token(this);
|
||||
};
|
||||
|
||||
// If we're in an ES6 environment, make parsers iterable
|
||||
if (typeof Symbol !== "undefined") pp[Symbol.iterator] = function () {
|
||||
var self = this;
|
||||
return { next: function next() {
|
||||
var token = self.getToken();
|
||||
return {
|
||||
done: token.type === tt.eof,
|
||||
value: token
|
||||
};
|
||||
} };
|
||||
};
|
||||
|
||||
// Toggle strict mode. Re-reads the next number or string to please
|
||||
// pedantic tests (`"use strict"; 010;` should fail).
|
||||
|
||||
pp.setStrict = function (strict) {
|
||||
this.strict = strict;
|
||||
if (this.type !== tt.num && this.type !== tt.string) return;
|
||||
this.pos = this.start;
|
||||
if (this.options.locations) {
|
||||
while (this.pos < this.lineStart) {
|
||||
this.lineStart = this.input.lastIndexOf("\n", this.lineStart - 2) + 1;
|
||||
--this.curLine;
|
||||
}
|
||||
}
|
||||
this.nextToken();
|
||||
};
|
||||
|
||||
pp.curContext = function () {
|
||||
return this.context[this.context.length - 1];
|
||||
};
|
||||
|
||||
// Read a single token, updating the parser object's token-related
|
||||
// properties.
|
||||
|
||||
pp.nextToken = function () {
|
||||
var curContext = this.curContext();
|
||||
if (!curContext || !curContext.preserveSpace) this.skipSpace();
|
||||
|
||||
this.start = this.pos;
|
||||
if (this.options.locations) this.startLoc = this.curPosition();
|
||||
if (this.pos >= this.input.length) return this.finishToken(tt.eof);
|
||||
|
||||
if (curContext.override) return curContext.override(this);else this.readToken(this.fullCharCodeAtPos());
|
||||
};
|
||||
|
||||
pp.readToken = function (code) {
|
||||
// Identifier or keyword. '\uXXXX' sequences are allowed in
|
||||
// identifiers, so '\' also dispatches to that.
|
||||
if (isIdentifierStart(code, this.options.ecmaVersion >= 6) || code === 92 /* '\' */) return this.readWord();
|
||||
|
||||
return this.getTokenFromCode(code);
|
||||
};
|
||||
|
||||
pp.fullCharCodeAtPos = function () {
|
||||
var code = this.input.charCodeAt(this.pos);
|
||||
if (code <= 55295 || code >= 57344) return code;
|
||||
var next = this.input.charCodeAt(this.pos + 1);
|
||||
return (code << 10) + next - 56613888;
|
||||
};
|
||||
|
||||
pp.skipBlockComment = function () {
|
||||
var startLoc = this.options.onComment && this.options.locations && this.curPosition();
|
||||
var start = this.pos,
|
||||
end = this.input.indexOf("*/", this.pos += 2);
|
||||
if (end === -1) this.raise(this.pos - 2, "Unterminated comment");
|
||||
this.pos = end + 2;
|
||||
if (this.options.locations) {
|
||||
lineBreakG.lastIndex = start;
|
||||
var match = undefined;
|
||||
while ((match = lineBreakG.exec(this.input)) && match.index < this.pos) {
|
||||
++this.curLine;
|
||||
this.lineStart = match.index + match[0].length;
|
||||
}
|
||||
}
|
||||
if (this.options.onComment) this.options.onComment(true, this.input.slice(start + 2, end), start, this.pos, startLoc, this.options.locations && this.curPosition());
|
||||
};
|
||||
|
||||
pp.skipLineComment = function (startSkip) {
|
||||
var start = this.pos;
|
||||
var startLoc = this.options.onComment && this.options.locations && this.curPosition();
|
||||
var ch = this.input.charCodeAt(this.pos += startSkip);
|
||||
while (this.pos < this.input.length && ch !== 10 && ch !== 13 && ch !== 8232 && ch !== 8233) {
|
||||
++this.pos;
|
||||
ch = this.input.charCodeAt(this.pos);
|
||||
}
|
||||
if (this.options.onComment) this.options.onComment(false, this.input.slice(start + startSkip, this.pos), start, this.pos, startLoc, this.options.locations && this.curPosition());
|
||||
};
|
||||
|
||||
// Called at the start of the parse and after every token. Skips
|
||||
// whitespace and comments, and.
|
||||
|
||||
pp.skipSpace = function () {
|
||||
while (this.pos < this.input.length) {
|
||||
var ch = this.input.charCodeAt(this.pos);
|
||||
if (ch === 32) {
|
||||
// ' '
|
||||
++this.pos;
|
||||
} else if (ch === 13) {
|
||||
++this.pos;
|
||||
var next = this.input.charCodeAt(this.pos);
|
||||
if (next === 10) {
|
||||
++this.pos;
|
||||
}
|
||||
if (this.options.locations) {
|
||||
++this.curLine;
|
||||
this.lineStart = this.pos;
|
||||
}
|
||||
} else if (ch === 10 || ch === 8232 || ch === 8233) {
|
||||
++this.pos;
|
||||
if (this.options.locations) {
|
||||
++this.curLine;
|
||||
this.lineStart = this.pos;
|
||||
}
|
||||
} else if (ch > 8 && ch < 14) {
|
||||
++this.pos;
|
||||
} else if (ch === 47) {
|
||||
// '/'
|
||||
var next = this.input.charCodeAt(this.pos + 1);
|
||||
if (next === 42) {
|
||||
// '*'
|
||||
this.skipBlockComment();
|
||||
} else if (next === 47) {
|
||||
// '/'
|
||||
this.skipLineComment(2);
|
||||
} else break;
|
||||
} else if (ch === 160) {
|
||||
// '\xa0'
|
||||
++this.pos;
|
||||
} else if (ch >= 5760 && nonASCIIwhitespace.test(String.fromCharCode(ch))) {
|
||||
++this.pos;
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
// Called at the end of every token. Sets `end`, `val`, and
|
||||
// maintains `context` and `exprAllowed`, and skips the space after
|
||||
// the token, so that the next one's `start` will point at the
|
||||
// right position.
|
||||
|
||||
pp.finishToken = function (type, val) {
|
||||
this.end = this.pos;
|
||||
if (this.options.locations) this.endLoc = this.curPosition();
|
||||
var prevType = this.type;
|
||||
this.type = type;
|
||||
this.value = val;
|
||||
|
||||
this.updateContext(prevType);
|
||||
};
|
||||
|
||||
// ### Token reading
|
||||
|
||||
// This is the function that is called to fetch the next token. It
|
||||
// is somewhat obscure, because it works in character codes rather
|
||||
// than characters, and because operator parsing has been inlined
|
||||
// into it.
|
||||
//
|
||||
// All in the name of speed.
|
||||
//
|
||||
pp.readToken_dot = function () {
|
||||
var next = this.input.charCodeAt(this.pos + 1);
|
||||
if (next >= 48 && next <= 57) return this.readNumber(true);
|
||||
var next2 = this.input.charCodeAt(this.pos + 2);
|
||||
if (this.options.ecmaVersion >= 6 && next === 46 && next2 === 46) {
|
||||
// 46 = dot '.'
|
||||
this.pos += 3;
|
||||
return this.finishToken(tt.ellipsis);
|
||||
} else {
|
||||
++this.pos;
|
||||
return this.finishToken(tt.dot);
|
||||
}
|
||||
};
|
||||
|
||||
pp.readToken_slash = function () {
|
||||
// '/'
|
||||
var next = this.input.charCodeAt(this.pos + 1);
|
||||
if (this.exprAllowed) {
|
||||
++this.pos;return this.readRegexp();
|
||||
}
|
||||
if (next === 61) return this.finishOp(tt.assign, 2);
|
||||
return this.finishOp(tt.slash, 1);
|
||||
};
|
||||
|
||||
pp.readToken_mult_modulo = function (code) {
|
||||
// '%*'
|
||||
var type = code === 42 ? tt.star : tt.modulo;
|
||||
var width = 1;
|
||||
var next = this.input.charCodeAt(this.pos + 1);
|
||||
|
||||
if (next === 42) {
|
||||
// '*'
|
||||
width++;
|
||||
next = this.input.charCodeAt(this.pos + 2);
|
||||
type = tt.exponent;
|
||||
}
|
||||
|
||||
if (next === 61) {
|
||||
width++;
|
||||
type = tt.assign;
|
||||
}
|
||||
|
||||
return this.finishOp(type, width);
|
||||
};
|
||||
|
||||
pp.readToken_pipe_amp = function (code) {
|
||||
// '|&'
|
||||
var next = this.input.charCodeAt(this.pos + 1);
|
||||
if (next === code) return this.finishOp(code === 124 ? tt.logicalOR : tt.logicalAND, 2);
|
||||
if (next === 61) return this.finishOp(tt.assign, 2);
|
||||
return this.finishOp(code === 124 ? tt.bitwiseOR : tt.bitwiseAND, 1);
|
||||
};
|
||||
|
||||
pp.readToken_caret = function () {
|
||||
// '^'
|
||||
var next = this.input.charCodeAt(this.pos + 1);
|
||||
if (next === 61) return this.finishOp(tt.assign, 2);
|
||||
return this.finishOp(tt.bitwiseXOR, 1);
|
||||
};
|
||||
|
||||
pp.readToken_plus_min = function (code) {
|
||||
// '+-'
|
||||
var next = this.input.charCodeAt(this.pos + 1);
|
||||
if (next === code) {
|
||||
if (next == 45 && this.input.charCodeAt(this.pos + 2) == 62 && lineBreak.test(this.input.slice(this.lastTokEnd, this.pos))) {
|
||||
// A `-->` line comment
|
||||
this.skipLineComment(3);
|
||||
this.skipSpace();
|
||||
return this.nextToken();
|
||||
}
|
||||
return this.finishOp(tt.incDec, 2);
|
||||
}
|
||||
if (next === 61) return this.finishOp(tt.assign, 2);
|
||||
return this.finishOp(tt.plusMin, 1);
|
||||
};
|
||||
|
||||
pp.readToken_lt_gt = function (code) {
|
||||
// '<>'
|
||||
var next = this.input.charCodeAt(this.pos + 1);
|
||||
var size = 1;
|
||||
if (next === code) {
|
||||
size = code === 62 && this.input.charCodeAt(this.pos + 2) === 62 ? 3 : 2;
|
||||
if (this.input.charCodeAt(this.pos + size) === 61) return this.finishOp(tt.assign, size + 1);
|
||||
return this.finishOp(tt.bitShift, size);
|
||||
}
|
||||
if (next == 33 && code == 60 && this.input.charCodeAt(this.pos + 2) == 45 && this.input.charCodeAt(this.pos + 3) == 45) {
|
||||
if (this.inModule) unexpected();
|
||||
// `<!--`, an XML-style comment that should be interpreted as a line comment
|
||||
this.skipLineComment(4);
|
||||
this.skipSpace();
|
||||
return this.nextToken();
|
||||
}
|
||||
if (next === 61) size = this.input.charCodeAt(this.pos + 2) === 61 ? 3 : 2;
|
||||
return this.finishOp(tt.relational, size);
|
||||
};
|
||||
|
||||
pp.readToken_eq_excl = function (code) {
|
||||
// '=!'
|
||||
var next = this.input.charCodeAt(this.pos + 1);
|
||||
if (next === 61) return this.finishOp(tt.equality, this.input.charCodeAt(this.pos + 2) === 61 ? 3 : 2);
|
||||
if (code === 61 && next === 62 && this.options.ecmaVersion >= 6) {
|
||||
// '=>'
|
||||
this.pos += 2;
|
||||
return this.finishToken(tt.arrow);
|
||||
}
|
||||
return this.finishOp(code === 61 ? tt.eq : tt.prefix, 1);
|
||||
};
|
||||
|
||||
pp.getTokenFromCode = function (code) {
|
||||
switch (code) {
|
||||
// The interpretation of a dot depends on whether it is followed
|
||||
// by a digit or another two dots.
|
||||
case 46:
|
||||
// '.'
|
||||
return this.readToken_dot();
|
||||
|
||||
// Punctuation tokens.
|
||||
case 40:
|
||||
++this.pos;return this.finishToken(tt.parenL);
|
||||
case 41:
|
||||
++this.pos;return this.finishToken(tt.parenR);
|
||||
case 59:
|
||||
++this.pos;return this.finishToken(tt.semi);
|
||||
case 44:
|
||||
++this.pos;return this.finishToken(tt.comma);
|
||||
case 91:
|
||||
++this.pos;return this.finishToken(tt.bracketL);
|
||||
case 93:
|
||||
++this.pos;return this.finishToken(tt.bracketR);
|
||||
case 123:
|
||||
++this.pos;return this.finishToken(tt.braceL);
|
||||
case 125:
|
||||
++this.pos;return this.finishToken(tt.braceR);
|
||||
case 58:
|
||||
++this.pos;return this.finishToken(tt.colon);
|
||||
case 63:
|
||||
++this.pos;return this.finishToken(tt.question);
|
||||
|
||||
case 96:
|
||||
// '`'
|
||||
if (this.options.ecmaVersion < 6) break;
|
||||
++this.pos;
|
||||
return this.finishToken(tt.backQuote);
|
||||
|
||||
case 48:
|
||||
// '0'
|
||||
var next = this.input.charCodeAt(this.pos + 1);
|
||||
if (next === 120 || next === 88) return this.readRadixNumber(16); // '0x', '0X' - hex number
|
||||
if (this.options.ecmaVersion >= 6) {
|
||||
if (next === 111 || next === 79) return this.readRadixNumber(8); // '0o', '0O' - octal number
|
||||
if (next === 98 || next === 66) return this.readRadixNumber(2); // '0b', '0B' - binary number
|
||||
}
|
||||
// Anything else beginning with a digit is an integer, octal
|
||||
// number, or float.
|
||||
case 49:case 50:case 51:case 52:case 53:case 54:case 55:case 56:case 57:
|
||||
// 1-9
|
||||
return this.readNumber(false);
|
||||
|
||||
// Quotes produce strings.
|
||||
case 34:case 39:
|
||||
// '"', "'"
|
||||
return this.readString(code);
|
||||
|
||||
// Operators are parsed inline in tiny state machines. '=' (61) is
|
||||
// often referred to. `finishOp` simply skips the amount of
|
||||
// characters it is given as second argument, and returns a token
|
||||
// of the type given by its first argument.
|
||||
|
||||
case 47:
|
||||
// '/'
|
||||
return this.readToken_slash();
|
||||
|
||||
case 37:case 42:
|
||||
// '%*'
|
||||
return this.readToken_mult_modulo(code);
|
||||
|
||||
case 124:case 38:
|
||||
// '|&'
|
||||
return this.readToken_pipe_amp(code);
|
||||
|
||||
case 94:
|
||||
// '^'
|
||||
return this.readToken_caret();
|
||||
|
||||
case 43:case 45:
|
||||
// '+-'
|
||||
return this.readToken_plus_min(code);
|
||||
|
||||
case 60:case 62:
|
||||
// '<>'
|
||||
return this.readToken_lt_gt(code);
|
||||
|
||||
case 61:case 33:
|
||||
// '=!'
|
||||
return this.readToken_eq_excl(code);
|
||||
|
||||
case 126:
|
||||
// '~'
|
||||
return this.finishOp(tt.prefix, 1);
|
||||
}
|
||||
|
||||
this.raise(this.pos, "Unexpected character '" + codePointToString(code) + "'");
|
||||
};
|
||||
|
||||
pp.finishOp = function (type, size) {
|
||||
var str = this.input.slice(this.pos, this.pos + size);
|
||||
this.pos += size;
|
||||
return this.finishToken(type, str);
|
||||
};
|
||||
|
||||
var regexpUnicodeSupport = false;
|
||||
try {
|
||||
new RegExp("", "u");regexpUnicodeSupport = true;
|
||||
} catch (e) {}
|
||||
|
||||
// Parse a regular expression. Some context-awareness is necessary,
|
||||
// since a '/' inside a '[]' set does not end the expression.
|
||||
|
||||
pp.readRegexp = function () {
|
||||
var escaped = undefined,
|
||||
inClass = undefined,
|
||||
start = this.pos;
|
||||
for (;;) {
|
||||
if (this.pos >= this.input.length) this.raise(start, "Unterminated regular expression");
|
||||
var ch = this.input.charAt(this.pos);
|
||||
if (lineBreak.test(ch)) this.raise(start, "Unterminated regular expression");
|
||||
if (!escaped) {
|
||||
if (ch === "[") inClass = true;else if (ch === "]" && inClass) inClass = false;else if (ch === "/" && !inClass) break;
|
||||
escaped = ch === "\\";
|
||||
} else escaped = false;
|
||||
++this.pos;
|
||||
}
|
||||
var content = this.input.slice(start, this.pos);
|
||||
++this.pos;
|
||||
// Need to use `readWord1` because '\uXXXX' sequences are allowed
|
||||
// here (don't ask).
|
||||
var mods = this.readWord1();
|
||||
var tmp = content;
|
||||
if (mods) {
|
||||
var validFlags = /^[gmsiy]*$/;
|
||||
if (this.options.ecmaVersion >= 6) validFlags = /^[gmsiyu]*$/;
|
||||
if (!validFlags.test(mods)) this.raise(start, "Invalid regular expression flag");
|
||||
if (mods.indexOf("u") >= 0 && !regexpUnicodeSupport) {
|
||||
// Replace each astral symbol and every Unicode escape sequence that
|
||||
// possibly represents an astral symbol or a paired surrogate with a
|
||||
// single ASCII symbol to avoid throwing on regular expressions that
|
||||
// are only valid in combination with the `/u` flag.
|
||||
// Note: replacing with the ASCII symbol `x` might cause false
|
||||
// negatives in unlikely scenarios. For example, `[\u{61}-b]` is a
|
||||
// perfectly valid pattern that is equivalent to `[a-b]`, but it would
|
||||
// be replaced by `[x-b]` which throws an error.
|
||||
tmp = tmp.replace(/\\u([a-fA-F0-9]{4})|\\u\{([0-9a-fA-F]+)\}|[\uD800-\uDBFF][\uDC00-\uDFFF]/g, "x");
|
||||
}
|
||||
}
|
||||
// Detect invalid regular expressions.
|
||||
try {
|
||||
new RegExp(tmp);
|
||||
} catch (e) {
|
||||
if (e instanceof SyntaxError) this.raise(start, "Error parsing regular expression: " + e.message);
|
||||
this.raise(e);
|
||||
}
|
||||
// Get a regular expression object for this pattern-flag pair, or `null` in
|
||||
// case the current environment doesn't support the flags it uses.
|
||||
var value = undefined;
|
||||
try {
|
||||
value = new RegExp(content, mods);
|
||||
} catch (err) {
|
||||
value = null;
|
||||
}
|
||||
return this.finishToken(tt.regexp, { pattern: content, flags: mods, value: value });
|
||||
};
|
||||
|
||||
// Read an integer in the given radix. Return null if zero digits
|
||||
// were read, the integer value otherwise. When `len` is given, this
|
||||
// will return `null` unless the integer has exactly `len` digits.
|
||||
|
||||
pp.readInt = function (radix, len) {
|
||||
var start = this.pos,
|
||||
total = 0;
|
||||
for (var i = 0, e = len == null ? Infinity : len; i < e; ++i) {
|
||||
var code = this.input.charCodeAt(this.pos),
|
||||
val = undefined;
|
||||
if (code >= 97) val = code - 97 + 10; // a
|
||||
else if (code >= 65) val = code - 65 + 10; // A
|
||||
else if (code >= 48 && code <= 57) val = code - 48; // 0-9
|
||||
else val = Infinity;
|
||||
if (val >= radix) break;
|
||||
++this.pos;
|
||||
total = total * radix + val;
|
||||
}
|
||||
if (this.pos === start || len != null && this.pos - start !== len) return null;
|
||||
|
||||
return total;
|
||||
};
|
||||
|
||||
pp.readRadixNumber = function (radix) {
|
||||
this.pos += 2; // 0x
|
||||
var val = this.readInt(radix);
|
||||
if (val == null) this.raise(this.start + 2, "Expected number in radix " + radix);
|
||||
if (isIdentifierStart(this.fullCharCodeAtPos())) this.raise(this.pos, "Identifier directly after number");
|
||||
return this.finishToken(tt.num, val);
|
||||
};
|
||||
|
||||
// Read an integer, octal integer, or floating-point number.
|
||||
|
||||
pp.readNumber = function (startsWithDot) {
|
||||
var start = this.pos,
|
||||
isFloat = false,
|
||||
octal = this.input.charCodeAt(this.pos) === 48;
|
||||
if (!startsWithDot && this.readInt(10) === null) this.raise(start, "Invalid number");
|
||||
if (this.input.charCodeAt(this.pos) === 46) {
|
||||
++this.pos;
|
||||
this.readInt(10);
|
||||
isFloat = true;
|
||||
}
|
||||
var next = this.input.charCodeAt(this.pos);
|
||||
if (next === 69 || next === 101) {
|
||||
// 'eE'
|
||||
next = this.input.charCodeAt(++this.pos);
|
||||
if (next === 43 || next === 45) ++this.pos; // '+-'
|
||||
if (this.readInt(10) === null) this.raise(start, "Invalid number");
|
||||
isFloat = true;
|
||||
}
|
||||
if (isIdentifierStart(this.fullCharCodeAtPos())) this.raise(this.pos, "Identifier directly after number");
|
||||
|
||||
var str = this.input.slice(start, this.pos),
|
||||
val = undefined;
|
||||
if (isFloat) val = parseFloat(str);else if (!octal || str.length === 1) val = parseInt(str, 10);else if (/[89]/.test(str) || this.strict) this.raise(start, "Invalid number");else val = parseInt(str, 8);
|
||||
return this.finishToken(tt.num, val);
|
||||
};
|
||||
|
||||
// Read a string value, interpreting backslash-escapes.
|
||||
|
||||
pp.readCodePoint = function () {
|
||||
var ch = this.input.charCodeAt(this.pos),
|
||||
code = undefined;
|
||||
|
||||
if (ch === 123) {
|
||||
if (this.options.ecmaVersion < 6) this.unexpected();
|
||||
++this.pos;
|
||||
code = this.readHexChar(this.input.indexOf("}", this.pos) - this.pos);
|
||||
++this.pos;
|
||||
if (code > 1114111) this.unexpected();
|
||||
} else {
|
||||
code = this.readHexChar(4);
|
||||
}
|
||||
return code;
|
||||
};
|
||||
|
||||
function codePointToString(code) {
|
||||
// UTF-16 Decoding
|
||||
if (code <= 65535) return String.fromCharCode(code);
|
||||
return String.fromCharCode((code - 65536 >> 10) + 55296, (code - 65536 & 1023) + 56320);
|
||||
}
|
||||
|
||||
pp.readString = function (quote) {
|
||||
var out = "",
|
||||
chunkStart = ++this.pos;
|
||||
for (;;) {
|
||||
if (this.pos >= this.input.length) this.raise(this.start, "Unterminated string constant");
|
||||
var ch = this.input.charCodeAt(this.pos);
|
||||
if (ch === quote) break;
|
||||
if (ch === 92) {
|
||||
// '\'
|
||||
out += this.input.slice(chunkStart, this.pos);
|
||||
out += this.readEscapedChar();
|
||||
chunkStart = this.pos;
|
||||
} else {
|
||||
if (isNewLine(ch)) this.raise(this.start, "Unterminated string constant");
|
||||
++this.pos;
|
||||
}
|
||||
}
|
||||
out += this.input.slice(chunkStart, this.pos++);
|
||||
return this.finishToken(tt.string, out);
|
||||
};
|
||||
|
||||
// Reads template string tokens.
|
||||
|
||||
pp.readTmplToken = function () {
|
||||
var out = "",
|
||||
chunkStart = this.pos;
|
||||
for (;;) {
|
||||
if (this.pos >= this.input.length) this.raise(this.start, "Unterminated template");
|
||||
var ch = this.input.charCodeAt(this.pos);
|
||||
if (ch === 96 || ch === 36 && this.input.charCodeAt(this.pos + 1) === 123) {
|
||||
// '`', '${'
|
||||
if (this.pos === this.start && this.type === tt.template) {
|
||||
if (ch === 36) {
|
||||
this.pos += 2;
|
||||
return this.finishToken(tt.dollarBraceL);
|
||||
} else {
|
||||
++this.pos;
|
||||
return this.finishToken(tt.backQuote);
|
||||
}
|
||||
}
|
||||
out += this.input.slice(chunkStart, this.pos);
|
||||
return this.finishToken(tt.template, out);
|
||||
}
|
||||
if (ch === 92) {
|
||||
// '\'
|
||||
out += this.input.slice(chunkStart, this.pos);
|
||||
out += this.readEscapedChar();
|
||||
chunkStart = this.pos;
|
||||
} else if (isNewLine(ch)) {
|
||||
out += this.input.slice(chunkStart, this.pos);
|
||||
++this.pos;
|
||||
if (ch === 13 && this.input.charCodeAt(this.pos) === 10) {
|
||||
++this.pos;
|
||||
out += "\n";
|
||||
} else {
|
||||
out += String.fromCharCode(ch);
|
||||
}
|
||||
if (this.options.locations) {
|
||||
++this.curLine;
|
||||
this.lineStart = this.pos;
|
||||
}
|
||||
chunkStart = this.pos;
|
||||
} else {
|
||||
++this.pos;
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
// Used to read escaped characters
|
||||
|
||||
pp.readEscapedChar = function () {
|
||||
var ch = this.input.charCodeAt(++this.pos);
|
||||
var octal = /^[0-7]+/.exec(this.input.slice(this.pos, this.pos + 3));
|
||||
if (octal) octal = octal[0];
|
||||
while (octal && parseInt(octal, 8) > 255) octal = octal.slice(0, -1);
|
||||
if (octal === "0") octal = null;
|
||||
++this.pos;
|
||||
if (octal) {
|
||||
if (this.strict) this.raise(this.pos - 2, "Octal literal in strict mode");
|
||||
this.pos += octal.length - 1;
|
||||
return String.fromCharCode(parseInt(octal, 8));
|
||||
} else {
|
||||
switch (ch) {
|
||||
case 110:
|
||||
return "\n"; // 'n' -> '\n'
|
||||
case 114:
|
||||
return "\r"; // 'r' -> '\r'
|
||||
case 120:
|
||||
return String.fromCharCode(this.readHexChar(2)); // 'x'
|
||||
case 117:
|
||||
return codePointToString(this.readCodePoint()); // 'u'
|
||||
case 116:
|
||||
return "\t"; // 't' -> '\t'
|
||||
case 98:
|
||||
return "\b"; // 'b' -> '\b'
|
||||
case 118:
|
||||
return "\u000b"; // 'v' -> '\u000b'
|
||||
case 102:
|
||||
return "\f"; // 'f' -> '\f'
|
||||
case 48:
|
||||
return "\u0000"; // 0 -> '\0'
|
||||
case 13:
|
||||
if (this.input.charCodeAt(this.pos) === 10) ++this.pos; // '\r\n'
|
||||
case 10:
|
||||
// ' \n'
|
||||
if (this.options.locations) {
|
||||
this.lineStart = this.pos;++this.curLine;
|
||||
}
|
||||
return "";
|
||||
default:
|
||||
return String.fromCharCode(ch);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
// Used to read character escape sequences ('\x', '\u', '\U').
|
||||
|
||||
pp.readHexChar = function (len) {
|
||||
var n = this.readInt(16, len);
|
||||
if (n === null) this.raise(this.start, "Bad character escape sequence");
|
||||
return n;
|
||||
};
|
||||
|
||||
// Used to signal to callers of `readWord1` whether the word
|
||||
// contained any escape sequences. This is needed because words with
|
||||
// escape sequences must not be interpreted as keywords.
|
||||
|
||||
var containsEsc;
|
||||
|
||||
// Read an identifier, and return it as a string. Sets `containsEsc`
|
||||
// to whether the word contained a '\u' escape.
|
||||
//
|
||||
// Incrementally adds only escaped chars, adding other chunks as-is
|
||||
// as a micro-optimization.
|
||||
|
||||
pp.readWord1 = function () {
|
||||
containsEsc = false;
|
||||
var word = "",
|
||||
first = true,
|
||||
chunkStart = this.pos;
|
||||
var astral = this.options.ecmaVersion >= 6;
|
||||
while (this.pos < this.input.length) {
|
||||
var ch = this.fullCharCodeAtPos();
|
||||
if (isIdentifierChar(ch, astral)) {
|
||||
this.pos += ch <= 65535 ? 1 : 2;
|
||||
} else if (ch === 92) {
|
||||
// "\"
|
||||
containsEsc = true;
|
||||
word += this.input.slice(chunkStart, this.pos);
|
||||
var escStart = this.pos;
|
||||
if (this.input.charCodeAt(++this.pos) != 117) // "u"
|
||||
this.raise(this.pos, "Expecting Unicode escape sequence \\uXXXX");
|
||||
++this.pos;
|
||||
var esc = this.readCodePoint();
|
||||
if (!(first ? isIdentifierStart : isIdentifierChar)(esc, astral)) this.raise(escStart, "Invalid Unicode escape");
|
||||
word += codePointToString(esc);
|
||||
chunkStart = this.pos;
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
first = false;
|
||||
}
|
||||
return word + this.input.slice(chunkStart, this.pos);
|
||||
};
|
||||
|
||||
// Read an identifier or keyword token. Will check for reserved
|
||||
// words when necessary.
|
||||
|
||||
pp.readWord = function () {
|
||||
var word = this.readWord1();
|
||||
var type = tt.name;
|
||||
if ((this.options.ecmaVersion >= 6 || !containsEsc) && this.isKeyword(word)) type = keywordTypes[word];
|
||||
return this.finishToken(type, word);
|
||||
};
|
||||
@ -1,156 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } };
|
||||
|
||||
exports.__esModule = true;
|
||||
// ## Token types
|
||||
|
||||
// The assignment of fine-grained, information-carrying type objects
|
||||
// allows the tokenizer to store the information it has about a
|
||||
// token in a way that is very cheap for the parser to look up.
|
||||
|
||||
// All token type variables start with an underscore, to make them
|
||||
// easy to recognize.
|
||||
|
||||
// The `beforeExpr` property is used to disambiguate between regular
|
||||
// expressions and divisions. It is set on all token types that can
|
||||
// be followed by an expression (thus, a slash after them would be a
|
||||
// regular expression).
|
||||
//
|
||||
// `isLoop` marks a keyword as starting a loop, which is important
|
||||
// to know when parsing a label, in order to allow or disallow
|
||||
// continue jumps to that label.
|
||||
|
||||
var TokenType = exports.TokenType = function TokenType(label) {
|
||||
var conf = arguments[1] === undefined ? {} : arguments[1];
|
||||
|
||||
_classCallCheck(this, TokenType);
|
||||
|
||||
this.label = label;
|
||||
this.keyword = conf.keyword;
|
||||
this.beforeExpr = !!conf.beforeExpr;
|
||||
this.startsExpr = !!conf.startsExpr;
|
||||
this.rightAssociative = !!conf.rightAssociative;
|
||||
this.isLoop = !!conf.isLoop;
|
||||
this.isAssign = !!conf.isAssign;
|
||||
this.prefix = !!conf.prefix;
|
||||
this.postfix = !!conf.postfix;
|
||||
this.binop = conf.binop || null;
|
||||
this.updateContext = null;
|
||||
};
|
||||
|
||||
function binop(name, prec) {
|
||||
return new TokenType(name, { beforeExpr: true, binop: prec });
|
||||
}
|
||||
var beforeExpr = { beforeExpr: true },
|
||||
startsExpr = { startsExpr: true };
|
||||
|
||||
var types = {
|
||||
num: new TokenType("num", startsExpr),
|
||||
regexp: new TokenType("regexp", startsExpr),
|
||||
string: new TokenType("string", startsExpr),
|
||||
name: new TokenType("name", startsExpr),
|
||||
eof: new TokenType("eof"),
|
||||
|
||||
// Punctuation token types.
|
||||
bracketL: new TokenType("[", { beforeExpr: true, startsExpr: true }),
|
||||
bracketR: new TokenType("]"),
|
||||
braceL: new TokenType("{", { beforeExpr: true, startsExpr: true }),
|
||||
braceR: new TokenType("}"),
|
||||
parenL: new TokenType("(", { beforeExpr: true, startsExpr: true }),
|
||||
parenR: new TokenType(")"),
|
||||
comma: new TokenType(",", beforeExpr),
|
||||
semi: new TokenType(";", beforeExpr),
|
||||
colon: new TokenType(":", beforeExpr),
|
||||
dot: new TokenType("."),
|
||||
question: new TokenType("?", beforeExpr),
|
||||
arrow: new TokenType("=>", beforeExpr),
|
||||
template: new TokenType("template"),
|
||||
ellipsis: new TokenType("...", beforeExpr),
|
||||
backQuote: new TokenType("`", startsExpr),
|
||||
dollarBraceL: new TokenType("${", { beforeExpr: true, startsExpr: true }),
|
||||
|
||||
// Operators. These carry several kinds of properties to help the
|
||||
// parser use them properly (the presence of these properties is
|
||||
// what categorizes them as operators).
|
||||
//
|
||||
// `binop`, when present, specifies that this operator is a binary
|
||||
// operator, and will refer to its precedence.
|
||||
//
|
||||
// `prefix` and `postfix` mark the operator as a prefix or postfix
|
||||
// unary operator.
|
||||
//
|
||||
// `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as
|
||||
// binary operators with a very low precedence, that should result
|
||||
// in AssignmentExpression nodes.
|
||||
|
||||
eq: new TokenType("=", { beforeExpr: true, isAssign: true }),
|
||||
assign: new TokenType("_=", { beforeExpr: true, isAssign: true }),
|
||||
incDec: new TokenType("++/--", { prefix: true, postfix: true, startsExpr: true }),
|
||||
prefix: new TokenType("prefix", { beforeExpr: true, prefix: true, startsExpr: true }),
|
||||
logicalOR: binop("||", 1),
|
||||
logicalAND: binop("&&", 2),
|
||||
bitwiseOR: binop("|", 3),
|
||||
bitwiseXOR: binop("^", 4),
|
||||
bitwiseAND: binop("&", 5),
|
||||
equality: binop("==/!=", 6),
|
||||
relational: binop("</>", 7),
|
||||
bitShift: binop("<</>>", 8),
|
||||
plusMin: new TokenType("+/-", { beforeExpr: true, binop: 9, prefix: true, startsExpr: true }),
|
||||
modulo: binop("%", 10),
|
||||
star: binop("*", 10),
|
||||
slash: binop("/", 10),
|
||||
exponent: new TokenType("**", { beforeExpr: true, binop: 11, rightAssociative: true })
|
||||
};
|
||||
|
||||
exports.types = types;
|
||||
// Map keyword names to token types.
|
||||
|
||||
var keywords = {};
|
||||
|
||||
exports.keywords = keywords;
|
||||
// Succinct definitions of keyword token types
|
||||
function kw(name) {
|
||||
var options = arguments[1] === undefined ? {} : arguments[1];
|
||||
|
||||
options.keyword = name;
|
||||
keywords[name] = types["_" + name] = new TokenType(name, options);
|
||||
}
|
||||
|
||||
kw("break");
|
||||
kw("case", beforeExpr);
|
||||
kw("catch");
|
||||
kw("continue");
|
||||
kw("debugger");
|
||||
kw("default");
|
||||
kw("do", { isLoop: true });
|
||||
kw("else", beforeExpr);
|
||||
kw("finally");
|
||||
kw("for", { isLoop: true });
|
||||
kw("function");
|
||||
kw("if");
|
||||
kw("return", beforeExpr);
|
||||
kw("switch");
|
||||
kw("throw", beforeExpr);
|
||||
kw("try");
|
||||
kw("var");
|
||||
kw("let");
|
||||
kw("const");
|
||||
kw("while", { isLoop: true });
|
||||
kw("with");
|
||||
kw("new", { beforeExpr: true, startsExpr: true });
|
||||
kw("this", startsExpr);
|
||||
kw("super", startsExpr);
|
||||
kw("class");
|
||||
kw("extends", beforeExpr);
|
||||
kw("export");
|
||||
kw("import");
|
||||
kw("yield", { beforeExpr: true, startsExpr: true });
|
||||
kw("null", startsExpr);
|
||||
kw("true", startsExpr);
|
||||
kw("false", startsExpr);
|
||||
kw("in", { beforeExpr: true, binop: 7 });
|
||||
kw("instanceof", { beforeExpr: true, binop: 7 });
|
||||
kw("typeof", { beforeExpr: true, prefix: true, startsExpr: true });
|
||||
kw("void", { beforeExpr: true, prefix: true, startsExpr: true });
|
||||
kw("delete", { beforeExpr: true, prefix: true, startsExpr: true });
|
||||
@ -1,16 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
exports.isArray = isArray;
|
||||
|
||||
// Checks if an object has a property.
|
||||
|
||||
exports.has = has;
|
||||
exports.__esModule = true;
|
||||
|
||||
function isArray(obj) {
|
||||
return Object.prototype.toString.call(obj) === "[object Array]";
|
||||
}
|
||||
|
||||
function has(obj, propName) {
|
||||
return Object.prototype.hasOwnProperty.call(obj, propName);
|
||||
}
|
||||
@ -1,19 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
exports.isNewLine = isNewLine;
|
||||
exports.__esModule = true;
|
||||
// Matches a whole line break (where CRLF is considered a single
|
||||
// line break). Used to count lines.
|
||||
|
||||
var lineBreak = /\r\n?|\n|\u2028|\u2029/;
|
||||
exports.lineBreak = lineBreak;
|
||||
var lineBreakG = new RegExp(lineBreak.source, "g");
|
||||
|
||||
exports.lineBreakG = lineBreakG;
|
||||
|
||||
function isNewLine(code) {
|
||||
return code === 10 || code === 13 || code === 8232 || code == 8233;
|
||||
}
|
||||
|
||||
var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/;
|
||||
exports.nonASCIIwhitespace = nonASCIIwhitespace;
|
||||
@ -1,112 +0,0 @@
|
||||
(function() {
|
||||
var driver, acorn;
|
||||
|
||||
if (typeof require !== "undefined") {
|
||||
driver = require("./driver.js");
|
||||
require("./tests.js");
|
||||
require("./tests-harmony.js");
|
||||
require("babel/register")
|
||||
acorn = require("../src")
|
||||
} else {
|
||||
driver = window;
|
||||
acorn = window.acorn;
|
||||
}
|
||||
|
||||
var htmlLog = typeof document === "object" && document.getElementById('log');
|
||||
var htmlGroup = htmlLog;
|
||||
|
||||
function group(name) {
|
||||
if (htmlGroup) {
|
||||
var parentGroup = htmlGroup;
|
||||
htmlGroup = document.createElement("ul");
|
||||
var item = document.createElement("li");
|
||||
item.textContent = name;
|
||||
item.appendChild(htmlGroup);
|
||||
parentGroup.appendChild(item);
|
||||
}
|
||||
if (typeof console === "object" && console.group) {
|
||||
console.group(name);
|
||||
}
|
||||
}
|
||||
|
||||
function groupEnd() {
|
||||
if (htmlGroup) {
|
||||
htmlGroup = htmlGroup.parentElement.parentElement;
|
||||
}
|
||||
if (typeof console === "object" && console.groupEnd) {
|
||||
console.groupEnd(name);
|
||||
}
|
||||
}
|
||||
|
||||
function log(title, message) {
|
||||
if (htmlGroup) {
|
||||
var elem = document.createElement("li");
|
||||
elem.innerHTML = "<b>" + title + "</b> " + message;
|
||||
htmlGroup.appendChild(elem);
|
||||
}
|
||||
if (typeof console === "object") console.log(title, message);
|
||||
}
|
||||
|
||||
var stats, modes = {
|
||||
Normal: {
|
||||
config: {
|
||||
parse: acorn.parse
|
||||
}
|
||||
},
|
||||
Loose: {
|
||||
config: {
|
||||
parse: acorn.parse_dammit,
|
||||
loose: true,
|
||||
filter: function (test) {
|
||||
var opts = test.options || {};
|
||||
if (opts.loose === false) return false;
|
||||
return (opts.ecmaVersion || 5) <= 6;
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
function report(state, code, message) {
|
||||
if (state != "ok") {++stats.failed; log(code, message);}
|
||||
++stats.testsRun;
|
||||
}
|
||||
|
||||
group("Errors");
|
||||
|
||||
for (var name in modes) {
|
||||
group(name);
|
||||
var mode = modes[name];
|
||||
stats = mode.stats = {testsRun: 0, failed: 0};
|
||||
var t0 = +new Date;
|
||||
driver.runTests(mode.config, report);
|
||||
mode.stats.duration = +new Date - t0;
|
||||
groupEnd();
|
||||
}
|
||||
|
||||
groupEnd();
|
||||
|
||||
function outputStats(name, stats) {
|
||||
log(name + ":", stats.testsRun + " tests run in " + stats.duration + "ms; " +
|
||||
(stats.failed ? stats.failed + " failures." : "all passed."));
|
||||
}
|
||||
|
||||
var total = {testsRun: 0, failed: 0, duration: 0};
|
||||
|
||||
group("Stats");
|
||||
|
||||
for (var name in modes) {
|
||||
var stats = modes[name].stats;
|
||||
outputStats(name + " parser", stats);
|
||||
for (var key in stats) total[key] += stats[key];
|
||||
}
|
||||
|
||||
outputStats("Total", total);
|
||||
|
||||
groupEnd();
|
||||
|
||||
if (total.failed && typeof process === "object") {
|
||||
process.stdout.write("", function() {
|
||||
process.exit(1);
|
||||
});
|
||||
}
|
||||
})();
|
||||
@ -1,96 +0,0 @@
|
||||
<!doctype html>
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
<title>Acorn benchmark</title>
|
||||
<script src="../acorn.js"></script>
|
||||
<script src="compare/esprima.js"></script>
|
||||
<script src="compare/traceur.js"></script>
|
||||
<script src="jquery-string.js"></script>
|
||||
<script src="codemirror-string.js"></script>
|
||||
<style>
|
||||
td { text-align: right; padding-right: 20px; }
|
||||
th { text-align: left; padding-right: 40px; }
|
||||
body { max-width: 50em; padding: 1em 2em; }
|
||||
h1 { font-size: 150%; }
|
||||
</style>
|
||||
</head>
|
||||
|
||||
<h1>Acorn/Esprima/Traceur speed comparison</h1>
|
||||
|
||||
<p>This will run each of the three ES6 parsers on the source code of
|
||||
jQuery 1.11.1 and CodeMirror 3.0b1 for five seconds, and show a table
|
||||
indicating the number of lines parsed per second. Note that Traceur
|
||||
always stores location data, and is thus not fairly compared by the
|
||||
benchmark <em>without</em> location data.<p>
|
||||
|
||||
<p>Also note that having the developer tools open in Chrome, or
|
||||
Firebug in Firefox <em>heavily</em> influences the numbers you get. In
|
||||
Chrome, the effect even lingers (in the tab) after you close the
|
||||
developer tools. Load in a fresh tab to get (halfway) stable
|
||||
numbers.</p>
|
||||
|
||||
<button onclick="run(false)">Compare <strong>without</strong> location data</button>
|
||||
<button onclick="run(true)">Compare <strong>with</strong> location data</button>
|
||||
<button onclick="run(false, true)">Run only Acorn</button>
|
||||
<span id="running"></span>
|
||||
|
||||
<script>
|
||||
var sourceFileName = 'source.js';
|
||||
|
||||
function runAcorn(code, locations) {
|
||||
acorn.parse(code, {ecmaVersion: 6, locations: locations, sourceFile: sourceFileName});
|
||||
}
|
||||
function runEsprima(code, locations) {
|
||||
esprima.parse(code, {loc: locations, source: sourceFileName});
|
||||
}
|
||||
function runTraceur(code) {
|
||||
var file = new traceur.syntax.SourceFile(sourceFileName, code);
|
||||
var parser = new traceur.syntax.Parser(file);
|
||||
parser.parseScript();
|
||||
}
|
||||
|
||||
var totalLines = codemirror30.split("\n").length + jquery111.split("\n").length;
|
||||
|
||||
var nowHost = (typeof performance === 'object' && 'now' in performance) ? performance : Date;
|
||||
|
||||
function benchmark(runner, locations) {
|
||||
// Give it a chance to warm up (first runs are usually outliers)
|
||||
runner(jquery111, locations);
|
||||
runner(codemirror30, locations);
|
||||
var t0 = nowHost.now(), t1, lines = 0;
|
||||
for (;;) {
|
||||
runner(jquery111, locations);
|
||||
runner(codemirror30, locations);
|
||||
lines += totalLines;
|
||||
t1 = nowHost.now();
|
||||
if (t1 - t0 > 5000) break;
|
||||
}
|
||||
return lines / ((t1 - t0) / 1000);
|
||||
}
|
||||
|
||||
function showOutput(values) {
|
||||
var html = "<hr><table>";
|
||||
for (var i = 0; i < values.length; ++i)
|
||||
html += "<tr><th>" + values[i].name + "</td><td>" + Math.round(values[i].score) + " lines per second</td><td>" +
|
||||
Math.round(values[i].score * 100 / values[0].score) + "%</td></tr>";
|
||||
document.body.appendChild(document.createElement("div")).innerHTML = html;
|
||||
}
|
||||
|
||||
function run(locations, acornOnly) {
|
||||
var running = document.getElementById("running");
|
||||
running.innerHTML = "Running benchmark...";
|
||||
var data = [{name: "Acorn", runner: runAcorn},
|
||||
{name: "Esprima", runner: runEsprima},
|
||||
{name: "Traceur", runner: runTraceur}];
|
||||
if (acornOnly) data.length = 1;
|
||||
var pos = 0;
|
||||
function next() {
|
||||
data[pos].score = benchmark(data[pos].runner, locations);
|
||||
if (++pos == data.length) {
|
||||
running.innerHTML = "";
|
||||
showOutput(data);
|
||||
} else setTimeout(next, 100);
|
||||
}
|
||||
setTimeout(next, 50);
|
||||
}
|
||||
</script>
|
||||
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
@ -1,114 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
(function (exports) {
|
||||
var tests = [];
|
||||
|
||||
exports.test = function (code, ast, options) {
|
||||
tests.push({ code: code, ast: ast, options: options });
|
||||
};
|
||||
exports.testFail = function (code, message, options) {
|
||||
tests.push({ code: code, error: message, options: options });
|
||||
};
|
||||
exports.testAssert = function (code, assert, options) {
|
||||
tests.push({ code: code, assert: assert, options: options });
|
||||
};
|
||||
|
||||
exports.runTests = function (config, callback) {
|
||||
var parse = config.parse;
|
||||
|
||||
for (var i = 0; i < tests.length; ++i) {
|
||||
var test = tests[i];
|
||||
if (config.filter && !config.filter(test)) continue;
|
||||
var testOpts = test.options || { locations: true };
|
||||
var expected = {};
|
||||
if (expected.onComment = testOpts.onComment) testOpts.onComment = [];
|
||||
if (expected.onToken = testOpts.onToken) testOpts.onToken = [];
|
||||
|
||||
try {
|
||||
var ast = parse(test.code, testOpts);
|
||||
} catch (e) {
|
||||
if (!(e instanceof SyntaxError)) {
|
||||
console.log(e.stack);throw e;
|
||||
}
|
||||
if (test.error) {
|
||||
if (e.message == test.error) callback("ok", test.code);else callback("fail", test.code, "Expected error message: " + test.error + "\nGot error message: " + e.message);
|
||||
} else {
|
||||
callback("error", test.code, e.message || e.toString());
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
if (test.error) {
|
||||
if (config.loose) callback("ok", test.code);else callback("fail", test.code, "Expected error message: " + test.error + "\nBut parsing succeeded.");
|
||||
} else if (test.assert) {
|
||||
var error = test.assert(ast);
|
||||
if (error) callback("fail", test.code, "\n Assertion failed:\n " + error);else callback("ok", test.code);
|
||||
} else {
|
||||
var mis = misMatch(test.ast, ast);
|
||||
for (var name in expected) {
|
||||
if (mis) break;
|
||||
if (expected[name]) {
|
||||
mis = misMatch(expected[name], testOpts[name]);
|
||||
testOpts[name] = expected[name];
|
||||
}
|
||||
}
|
||||
if (mis) callback("fail", test.code, mis);else callback("ok", test.code);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
function ppJSON(v) {
|
||||
return v instanceof RegExp ? v.toString() : JSON.stringify(v, null, 2);
|
||||
}
|
||||
function addPath(str, pt) {
|
||||
if (str.charAt(str.length - 1) == ")") return str.slice(0, str.length - 1) + "/" + pt + ")";
|
||||
return str + " (" + pt + ")";
|
||||
}
|
||||
|
||||
var misMatch = exports.misMatch = function (exp, act) {
|
||||
if (!exp || !act || typeof exp != "object" || typeof act != "object") {
|
||||
if (exp !== act && typeof exp != "function") return ppJSON(exp) + " !== " + ppJSON(act);
|
||||
} else if (exp instanceof RegExp || act instanceof RegExp) {
|
||||
var left = ppJSON(exp),
|
||||
right = ppJSON(act);
|
||||
if (left !== right) return left + " !== " + right;
|
||||
} else if (exp.splice) {
|
||||
if (!act.slice) return ppJSON(exp) + " != " + ppJSON(act);
|
||||
if (act.length != exp.length) return "array length mismatch " + exp.length + " != " + act.length;
|
||||
for (var i = 0; i < act.length; ++i) {
|
||||
var mis = misMatch(exp[i], act[i]);
|
||||
if (mis) return addPath(mis, i);
|
||||
}
|
||||
} else {
|
||||
for (var prop in exp) {
|
||||
var mis = misMatch(exp[prop], act[prop]);
|
||||
if (mis) return addPath(mis, prop);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
function mangle(ast) {
|
||||
if (typeof ast != "object" || !ast) return;
|
||||
if (ast.slice) {
|
||||
for (var i = 0; i < ast.length; ++i) mangle(ast[i]);
|
||||
} else {
|
||||
var loc = ast.start && ast.end && { start: ast.start, end: ast.end };
|
||||
if (loc) {
|
||||
delete ast.start;delete ast.end;
|
||||
}
|
||||
for (var name in ast) if (ast.hasOwnProperty(name)) mangle(ast[name]);
|
||||
if (loc) ast.loc = loc;
|
||||
}
|
||||
}
|
||||
|
||||
exports.printTests = function () {
|
||||
var out = "";
|
||||
for (var i = 0; i < tests.length; ++i) {
|
||||
if (tests[i].error) continue;
|
||||
mangle(tests[i].ast);
|
||||
out += "test(" + JSON.stringify(tests[i].code) + ", " + JSON.stringify(tests[i].ast, null, 2) + ");\n\n";
|
||||
}
|
||||
document.body.innerHTML = "";
|
||||
document.body.appendChild(document.createElement("pre")).appendChild(document.createTextNode(out));
|
||||
};
|
||||
})(typeof exports == "undefined" ? window : exports);
|
||||
@ -1,14 +0,0 @@
|
||||
<!doctype html>
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
<title>Acorn test suite</title>
|
||||
<script src="../dist/acorn.js"></script>
|
||||
<script src="../dist/acorn_loose.js"></script>
|
||||
<script src="driver.js"></script>
|
||||
<script src="tests.js" charset="utf-8"></script>
|
||||
<script src="tests-harmony.js" charset="utf-8"></script>
|
||||
</head>
|
||||
<body>
|
||||
<ul id="log"></ul>
|
||||
<script src="run.js"></script>
|
||||
</body>
|
||||
1
lib/acorn/test/jquery-string.js
vendored
1
lib/acorn/test/jquery-string.js
vendored
File diff suppressed because one or more lines are too long
@ -1,108 +0,0 @@
|
||||
"use strict";
|
||||
|
||||
(function () {
|
||||
var driver, acorn;
|
||||
|
||||
if (typeof require !== "undefined") {
|
||||
driver = require("./driver.js");
|
||||
require("./tests.js");
|
||||
require("./tests-harmony.js");
|
||||
require("./tests-flow.js");
|
||||
require("./tests-jsx.js");
|
||||
require("./tests-babel.js");
|
||||
require("babel/register");
|
||||
acorn = require("../src");
|
||||
} else {
|
||||
driver = window;
|
||||
acorn = window.acorn;
|
||||
}
|
||||
|
||||
var htmlLog = typeof document === "object" && document.getElementById("log");
|
||||
var htmlGroup = htmlLog;
|
||||
|
||||
function group(name) {
|
||||
if (htmlGroup) {
|
||||
var parentGroup = htmlGroup;
|
||||
htmlGroup = document.createElement("ul");
|
||||
var item = document.createElement("li");
|
||||
item.textContent = name;
|
||||
item.appendChild(htmlGroup);
|
||||
parentGroup.appendChild(item);
|
||||
}
|
||||
if (typeof console === "object" && console.group) {
|
||||
console.group(name);
|
||||
}
|
||||
}
|
||||
|
||||
function groupEnd() {
|
||||
if (htmlGroup) {
|
||||
htmlGroup = htmlGroup.parentElement.parentElement;
|
||||
}
|
||||
if (typeof console === "object" && console.groupEnd) {
|
||||
console.groupEnd(name);
|
||||
}
|
||||
}
|
||||
|
||||
function log(title, message) {
|
||||
if (htmlGroup) {
|
||||
var elem = document.createElement("li");
|
||||
elem.innerHTML = "<b>" + title + "</b> " + message;
|
||||
htmlGroup.appendChild(elem);
|
||||
}
|
||||
if (typeof console === "object") console.log(title, message);
|
||||
}
|
||||
|
||||
var stats,
|
||||
modes = {
|
||||
Normal: {
|
||||
config: {
|
||||
parse: acorn.parse
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
function report(state, code, message) {
|
||||
if (state != "ok") {
|
||||
++stats.failed;log(code, message);
|
||||
}
|
||||
++stats.testsRun;
|
||||
}
|
||||
|
||||
group("Errors");
|
||||
|
||||
for (var name in modes) {
|
||||
group(name);
|
||||
var mode = modes[name];
|
||||
stats = mode.stats = { testsRun: 0, failed: 0 };
|
||||
var t0 = +new Date();
|
||||
driver.runTests(mode.config, report);
|
||||
mode.stats.duration = +new Date() - t0;
|
||||
groupEnd();
|
||||
}
|
||||
|
||||
groupEnd();
|
||||
|
||||
function outputStats(name, stats) {
|
||||
log(name + ":", stats.testsRun + " tests run in " + stats.duration + "ms; " + (stats.failed ? stats.failed + " failures." : "all passed."));
|
||||
}
|
||||
|
||||
var total = { testsRun: 0, failed: 0, duration: 0 };
|
||||
|
||||
group("Stats");
|
||||
|
||||
for (var name in modes) {
|
||||
var stats = modes[name].stats;
|
||||
outputStats(name + " parser", stats);
|
||||
for (var key in stats) total[key] += stats[key];
|
||||
}
|
||||
|
||||
outputStats("Total", total);
|
||||
|
||||
groupEnd();
|
||||
|
||||
if (total.failed && typeof process === "object") {
|
||||
process.stdout.write("", function () {
|
||||
process.exit(1);
|
||||
});
|
||||
}
|
||||
})();
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
File diff suppressed because it is too large
Load Diff
File diff suppressed because one or more lines are too long
Loading…
x
Reference in New Issue
Block a user