cerxes/babel
3
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Implement ES7 Async/Await

Browse Source
This commit is contained in:
Sebastian McKenzie
2014-11-11 09:13:42 +11:00
parent 9d3580b23a
commit 211b3a6fdf
2 changed files with 876 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

769
test/tests-harmony.js
View File

@@ -13405,6 +13405,771 @@ test("/[a-z]/u", {
ecmaVersion: 6
});
// ES7: Async Functions
test('async function foo(promise) { await promise; }', {
type: "Program",
body: [{
type: "FunctionDeclaration",
id: {
type: "Identifier",
name: "foo",
loc: {
start: {line: 1, column: 15},
end: {line: 1, column: 18}
}
},
params: [{
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 19},
end: {line: 1, column: 26}
}
}],
defaults: [],
body: {
type: "BlockStatement",
body: [{
type: "ExpressionStatement",
expression: {
type: "AwaitExpression",
argument: {
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 36},
end: {line: 1, column: 43}
}
},
loc: {
start: {line: 1, column: 30},
end: {line: 1, column: 43}
}
},
loc: {
start: {line: 1, column: 30},
end: {line: 1, column: 44}
}
}],
loc: {
start: {line: 1, column: 28},
end: {line: 1, column: 46}
}
},
rest: null,
generator: false,
expression: false,
async: true,
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 46}
}
}]
}, {
ecmaVersion: 7,
locations: true
});
test('(function(x) { async function inner() { await x } })', {
type: "Program",
body: [{
type: "ExpressionStatement",
expression: {
type: "FunctionExpression",
id: null,
params: [
{
type: "Identifier",
name: "x",
loc: {
start: {line: 1, column: 10},
end: {line: 1, column: 11}
}
}
],
defaults: [],
body: {
type: "BlockStatement",
body: [
{
type: "FunctionDeclaration",
id: {
type: "Identifier",
name: "inner",
loc: {
start: {line: 1, column: 30},
end: {line: 1, column: 35}
}
},
params: [],
defaults: [],
body: {
type: "BlockStatement",
body: [
{
type: "ExpressionStatement",
expression: {
type: "AwaitExpression",
argument: {
type: "Identifier",
name: "x",
loc: {
start: {line: 1, column: 46},
end: {line: 1, column: 47}
}
},
loc: {
start: {line: 1, column: 40},
end: {line: 1, column: 47}
}
},
loc: {
start: {line: 1, column: 40},
end: {line: 1, column: 47}
}
}
],
loc: {
start: {line: 1, column: 38},
end: {line: 1, column: 49}
}
},
rest: null,
generator: false,
expression: false,
async: true,
loc: {
start: {line: 1, column: 15},
end: {line: 1, column: 49}
}
}
],
loc: {
start: {line: 1, column: 13},
end: {line: 1, column: 51}
}
},
rest: null,
generator: false,
expression: false,
loc: {
start: {line: 1, column: 1},
end: {line: 1, column: 51}
}
},
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 52}
}
}]
}, {
ecmaVersion: 7,
locations: true
});
test('var foo = async function(promise) { await promise; }', {
type: "Program",
body: [{
type: "VariableDeclaration",
declarations: [
{
type: "VariableDeclarator",
id: {
type: "Identifier",
name: "foo",
loc: {
start: {line: 1, column: 4},
end: {line: 1, column: 7}
}
},
init: {
type: "FunctionExpression",
id: null,
params: [
{
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 25},
end: {line: 1, column: 32}
}
}
],
defaults: [],
body: {
type: "BlockStatement",
body: [
{
type: "ExpressionStatement",
expression: {
type: "AwaitExpression",
argument: {
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 42},
end: {line: 1, column: 49}
}
},
loc: {
start: {line: 1, column: 36},
end: {line: 1, column: 49}
}
},
loc: {
start: {line: 1, column: 36},
end: {line: 1, column: 50}
}
}
],
loc: {
start: {line: 1, column: 34},
end: {line: 1, column: 52}
}
},
rest: null,
generator: false,
expression: false,
async: true,
loc: {
start: {line: 1, column: 10},
end: {line: 1, column: 52}
}
},
loc: {
start: {line: 1, column: 4},
end: {line: 1, column: 52}
}
}
],
kind: "var",
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 52}
}
}]
}, {
ecmaVersion: 7,
locations: true
});
test('var o = { a: 1, async foo(promise) { await promise } }', {
type: "Program",
body: [{
type: "VariableDeclaration",
declarations: [
{
type: "VariableDeclarator",
id: {
type: "Identifier",
name: "o",
loc: {
start: {line: 1, column: 4},
end: {line: 1, column: 5}
}
},
init: {
type: "ObjectExpression",
properties: [
{
type: "Property",
key: {
type: "Identifier",
name: "a",
loc: {
start: {line: 1, column: 10},
end: {line: 1, column: 11}
}
},
value: {
type: "Literal",
value: 1,
loc: {
start: {line: 1, column: 13},
end: {line: 1, column: 14}
}
},
kind: "init",
method: false,
shorthand: false,
computed: false,
loc: {
start: {line: 1, column: 10},
end: {line: 1, column: 14}
}
},
{
type: "Property",
key: {
type: "Identifier",
name: "foo",
loc: {
start: {line: 1, column: 22},
end: {line: 1, column: 25}
}
},
value: {
type: "FunctionExpression",
id: null,
params: [
{
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 26},
end: {line: 1, column: 33}
}
}
],
defaults: [],
body: {
type: "BlockStatement",
body: [
{
type: "ExpressionStatement",
expression: {
type: "AwaitExpression",
argument: {
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 43},
end: {line: 1, column: 50}
}
},
loc: {
start: {line: 1, column: 37},
end: {line: 1, column: 50}
}
},
loc: {
start: {line: 1, column: 37},
end: {line: 1, column: 50}
}
}
],
loc: {
start: {line: 1, column: 35},
end: {line: 1, column: 52}
}
},
rest: null,
generator: false,
expression: false,
async: true,
loc: {
start: {line: 1, column: 25},
end: {line: 1, column: 52}
}
},
kind: "init",
method: true,
shorthand: false,
computed: false,
loc: {
start: {line: 1, column: 16},
end: {line: 1, column: 52}
}
}
],
loc: {
start: {line: 1, column: 8},
end: {line: 1, column: 54}
}
},
loc: {
start: {line: 1, column: 4},
end: {line: 1, column: 54}
}
}
],
kind: "var",
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 54}
}
}]
}, {
ecmaVersion: 7,
locations: true
});
test('class Foo { async bar(promise) { await promise } }', {
type: "Program",
body: [{
type: "ClassDeclaration",
id: {
type: "Identifier",
name: "Foo",
loc: {
start: {line: 1, column: 6},
end: {line: 1, column: 9}
}
},
superClass: null,
body: {
type: "ClassBody",
body: [
{
type: "MethodDefinition",
key: {
type: "Identifier",
name: "bar",
loc: {
start: {line: 1, column: 18},
end: {line: 1, column: 21}
}
},
value: {
type: "FunctionExpression",
id: null,
params: [
{
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 22},
end: {line: 1, column: 29}
}
}
],
defaults: [],
body: {
type: "BlockStatement",
body: [
{
type: "ExpressionStatement",
expression: {
type: "AwaitExpression",
argument: {
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 39},
end: {line: 1, column: 46}
}
},
loc: {
start: {line: 1, column: 33},
end: {line: 1, column: 46}
}
},
loc: {
start: {line: 1, column: 33},
end: {line: 1, column: 46}
}
}
],
loc: {
start: {line: 1, column: 31},
end: {line: 1, column: 48}
}
},
rest: null,
generator: false,
expression: false,
async: true,
loc: {
start: {line: 1, column: 21},
end: {line: 1, column: 48}
}
},
kind: "",
static: false,
loc: {
start: {line: 1, column: 12},
end: {line: 1, column: 48}
}
}
],
loc: {
start: {line: 1, column: 10},
end: {line: 1, column: 50}
}
},
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 50}
}
}]
}, {
ecmaVersion: 7,
locations: true
});
test('f(a, async promise => await promise)', {
type: "Program",
body: [{
type: "ExpressionStatement",
expression: {
type: "CallExpression",
callee: {
type: "Identifier",
name: "f",
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 1}
}
},
arguments: [
{
type: "Identifier",
name: "a",
loc: {
start: {line: 1, column: 2},
end: {line: 1, column: 3}
}
},
{
type: "ArrowFunctionExpression",
id: null,
params: [
{
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 11},
end: {line: 1, column: 18}
}
}
],
defaults: [],
body: {
type: "AwaitExpression",
argument: {
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 28},
end: {line: 1, column: 35}
}
},
loc: {
start: {line: 1, column: 22},
end: {line: 1, column: 35}
}
},
rest: null,
generator: false,
expression: true,
async: true,
loc: {
start: {line: 1, column: 5},
end: {line: 1, column: 35}
}
}
],
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 36}
}
},
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 36}
}
}]
}, {
ecmaVersion: 7,
locations: true
});
test('f(a, async(x, y) => await [x, y], b)', {
type: "Program",
body: [{
type: "ExpressionStatement",
expression: {
type: "CallExpression",
callee: {
type: "Identifier",
name: "f",
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 1}
}
},
arguments: [
{
type: "Identifier",
name: "a",
loc: {
start: {line: 1, column: 2},
end: {line: 1, column: 3}
}
},
{
type: "ArrowFunctionExpression",
id: null,
params: [
{
type: "Identifier",
name: "x",
loc: {
start: {line: 1, column: 11},
end: {line: 1, column: 12}
}
},
{
type: "Identifier",
name: "y",
loc: {
start: {line: 1, column: 14},
end: {line: 1, column: 15}
}
}
],
defaults: [],
body: {
type: "AwaitExpression",
argument: {
type: "ArrayExpression",
elements: [
{
type: "Identifier",
name: "x",
loc: {
start: {line: 1, column: 27},
end: {line: 1, column: 28}
}
},
{
type: "Identifier",
name: "y",
loc: {
start: {line: 1, column: 30},
end: {line: 1, column: 31}
}
}
],
loc: {
start: {line: 1, column: 26},
end: {line: 1, column: 32}
}
},
loc: {
start: {line: 1, column: 20},
end: {line: 1, column: 32}
}
},
rest: null,
generator: false,
expression: true,
async: true,
loc: {
start: {line: 1, column: 5},
end: {line: 1, column: 32}
}
},
{
type: "Identifier",
name: "b",
loc: {
start: {line: 1, column: 34},
end: {line: 1, column: 35}
}
}
],
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 36}
}
},
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 36}
}
}]
}, {
ecmaVersion: 7,
locations: true
});
test('f(async function(promise) { await promise })', {
type: "Program",
body: [{
type: "ExpressionStatement",
expression: {
type: "CallExpression",
callee: {
type: "Identifier",
name: "f",
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 1}
}
},
arguments: [
{
type: "FunctionExpression",
id: null,
params: [
{
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 17},
end: {line: 1, column: 24}
}
}
],
defaults: [],
body: {
type: "BlockStatement",
body: [
{
type: "ExpressionStatement",
expression: {
type: "AwaitExpression",
argument: {
type: "Identifier",
name: "promise",
loc: {
start: {line: 1, column: 34},
end: {line: 1, column: 41}
}
},
loc: {
start: {line: 1, column: 28},
end: {line: 1, column: 41}
}
},
loc: {
start: {line: 1, column: 28},
end: {line: 1, column: 41}
}
}
],
loc: {
start: {line: 1, column: 26},
end: {line: 1, column: 43}
}
},
rest: null,
generator: false,
expression: false,
async: true,
loc: {
start: {line: 1, column: 2},
end: {line: 1, column: 43}
}
}
],
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 44}
}
},
loc: {
start: {line: 1, column: 0},
end: {line: 1, column: 44}
}
}]
}, {
ecmaVersion: 7,
locations: true
});
// Harmony Invalid syntax
testFail("0o", "Expected number in radix 8 (1:2)", {ecmaVersion: 6});
@@ -13517,6 +14282,10 @@ testFail("(10) => 00", "Unexpected token (1:1)", {ecmaVersion: 6});
testFail("(10, 20) => 00", "Unexpected token (1:1)", {ecmaVersion: 6});
testFail("function foo(promise) { await promise; }", "Unexpected token (1:30)", {ecmaVersion: 7});
testFail("async function* foo(promise) { await promise; }", "Unexpected token (1:14)", {ecmaVersion: 7});
testFail("yield v", "Unexpected token (1:6)", {ecmaVersion: 6});
testFail("yield 10", "Unexpected token (1:6)", {ecmaVersion: 6});