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Merge pull request #1 from jridgewell/pr/545

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Finish optionalChaining plugin
This commit is contained in:
Sven SAULEAU 2017-06-03 16:07:38 +02:00 committed by GitHub
commit 4628bb957d
13 changed files with 1196 additions and 40 deletions
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22
src/parser/expression.js
View File

@ -302,18 +302,23 @@ export default class ExpressionParser extends LValParser {
node.callee = this.parseNoCallExpr(); node.callee = this.parseNoCallExpr();
return this.parseSubscripts(this.finishNode(node, "BindExpression"), startPos, startLoc, noCalls); return this.parseSubscripts(this.finishNode(node, "BindExpression"), startPos, startLoc, noCalls);
} else if (this.eat(tt.questionDot)) { } else if (this.match(tt.questionDot)) {
const node = this.startNodeAt(startPos, startLoc);
if (!this.hasPlugin("optionalChaining")) { if (!this.hasPlugin("optionalChaining")) {
this.raise(node.start, "You can only use optional-chaining when the 'optionalChaining' plugin is enabled."); this.raise(startPos, "You can only use optional-chaining when the 'optionalChaining' plugin is enabled.");
} }
if (noCalls && this.lookahead().type == tt.parenL) {
return base;
}
this.next();
const node = this.startNodeAt(startPos, startLoc);
if (this.eat(tt.bracketL)) { if (this.eat(tt.bracketL)) {
node.object = base; node.object = base;
node.optional = true;
node.property = this.parseExpression(); node.property = this.parseExpression();
node.computed = true; node.computed = true;
node.optional = true;
this.expect(tt.bracketR); this.expect(tt.bracketR);
base = this.finishNode(node, "MemberExpression"); base = this.finishNode(node, "MemberExpression");
} else if (this.eat(tt.parenL)) { } else if (this.eat(tt.parenL)) {
@ -322,6 +327,7 @@ export default class ExpressionParser extends LValParser {
base.name === "async" && base.name === "async" &&
!this.canInsertSemicolon(); !this.canInsertSemicolon();
node.callee = base;
node.arguments = this.parseCallExpressionArguments(tt.parenR, possibleAsync); node.arguments = this.parseCallExpressionArguments(tt.parenR, possibleAsync);
node.optional = true; node.optional = true;
@ -329,8 +335,8 @@ export default class ExpressionParser extends LValParser {
} else { } else {
node.object = base; node.object = base;
node.property = this.parseIdentifier(true); node.property = this.parseIdentifier(true);
node.optional = true;
node.computed = false; node.computed = false;
node.optional = true;
base = this.finishNode(node, "MemberExpression"); base = this.finishNode(node, "MemberExpression");
} }
} else if (this.eat(tt.dot)) { } else if (this.eat(tt.dot)) {
@ -768,6 +774,7 @@ export default class ExpressionParser extends LValParser {
} }
node.callee = this.parseNoCallExpr(); node.callee = this.parseNoCallExpr();
const optional = this.eat(tt.questionDot);
if (this.eat(tt.parenL)) { if (this.eat(tt.parenL)) {
node.arguments = this.parseExprList(tt.parenR); node.arguments = this.parseExprList(tt.parenR);
@ -775,6 +782,9 @@ export default class ExpressionParser extends LValParser {
} else { } else {
node.arguments = []; node.arguments = [];
} }
if (optional) {
node.optional = true;
}
return this.finishNode(node, "NewExpression"); return this.finishNode(node, "NewExpression");
} }

6
src/tokenizer/index.js
View File

@ -428,11 +428,11 @@ export default class Tokenizer extends LocationParser {
readToken_question() { // '?' readToken_question() { // '?'
const next = this.input.charCodeAt(this.state.pos + 1); const next = this.input.charCodeAt(this.state.pos + 1);
if (next === 46) { // '.' const next2 = this.input.charCodeAt(this.state.pos + 2);
if (next === 46 && !(next2 >= 48 && next2 <= 57)) { // '.' not followed by a number
this.state.pos += 2; this.state.pos += 2;
return this.finishToken(tt.questionDot); return this.finishToken(tt.questionDot);
} } else {
else {
++this.state.pos; ++this.state.pos;
return this.finishToken(tt.question); return this.finishToken(tt.question);
} }

6
test/fixtures/experimental/optional-chaining/class-contructor-call/actual.js vendored
View File

@ -1,3 +1,9 @@
new C?.() new C?.()
new C?.(a, b) new C?.(a, b)
new B?.C?.()
new B?.C?.(a, b)
new B?.C

338
test/fixtures/experimental/optional-chaining/class-contructor-call/expected.json vendored
View File

@ -1,29 +1,29 @@
{ {
"type": "File", "type": "File",
"start": 0, "start": 0,
"end": 24, "end": 66,
"loc": { "loc": {
"start": { "start": {
"line": 1, "line": 1,
"column": 0 "column": 0
}, },
"end": { "end": {
"line": 3, "line": 9,
"column": 13 "column": 8
} }
}, },
"program": { "program": {
"type": "Program", "type": "Program",
"start": 0, "start": 0,
"end": 24, "end": 66,
"loc": { "loc": {
"start": { "start": {
"line": 1, "line": 1,
"column": 0 "column": 0
}, },
"end": { "end": {
"line": 3, "line": 9,
"column": 13 "column": 8
} }
}, },
"sourceType": "script", "sourceType": "script",
@ -107,24 +107,342 @@
}, },
"callee": { "callee": {
"type": "Identifier", "type": "Identifier",
"start": 4, "start": 15,
"end": 5, "end": 16,
"loc": { "loc": {
"start": { "start": {
"line": 1, "line": 3,
"column": 4 "column": 4
}, },
"end": { "end": {
"line": 1, "line": 3,
"column": 5 "column": 5
}, },
"identifierName": "C" "identifierName": "C"
}, },
"name": "C" "name": "C"
}, },
"arguments": [
{
"type": "Identifier",
"start": 19,
"end": 20,
"loc": {
"start": {
"line": 3,
"column": 8
},
"end": {
"line": 3,
"column": 9
},
"identifierName": "a"
},
"name": "a"
},
{
"type": "Identifier",
"start": 22,
"end": 23,
"loc": {
"start": {
"line": 3,
"column": 11
},
"end": {
"line": 3,
"column": 12
},
"identifierName": "b"
},
"name": "b"
}
],
"optional": true
}
},
{
"type": "ExpressionStatement",
"start": 26,
"end": 38,
"loc": {
"start": {
"line": 5,
"column": 0
},
"end": {
"line": 5,
"column": 12
}
},
"expression": {
"type": "NewExpression",
"start": 26,
"end": 38,
"loc": {
"start": {
"line": 5,
"column": 0
},
"end": {
"line": 5,
"column": 12
}
},
"callee": {
"type": "MemberExpression",
"start": 30,
"end": 34,
"loc": {
"start": {
"line": 5,
"column": 4
},
"end": {
"line": 5,
"column": 8
}
},
"object": {
"type": "Identifier",
"start": 30,
"end": 31,
"loc": {
"start": {
"line": 5,
"column": 4
},
"end": {
"line": 5,
"column": 5
},
"identifierName": "B"
},
"name": "B"
},
"optional": true,
"property": {
"type": "Identifier",
"start": 33,
"end": 34,
"loc": {
"start": {
"line": 5,
"column": 7
},
"end": {
"line": 5,
"column": 8
},
"identifierName": "C"
},
"name": "C"
},
"computed": false
},
"arguments": [], "arguments": [],
"optional": true "optional": true
} }
},
{
"type": "ExpressionStatement",
"start": 40,
"end": 56,
"loc": {
"start": {
"line": 7,
"column": 0
},
"end": {
"line": 7,
"column": 16
}
},
"expression": {
"type": "NewExpression",
"start": 40,
"end": 56,
"loc": {
"start": {
"line": 7,
"column": 0
},
"end": {
"line": 7,
"column": 16
}
},
"callee": {
"type": "MemberExpression",
"start": 44,
"end": 48,
"loc": {
"start": {
"line": 7,
"column": 4
},
"end": {
"line": 7,
"column": 8
}
},
"object": {
"type": "Identifier",
"start": 44,
"end": 45,
"loc": {
"start": {
"line": 7,
"column": 4
},
"end": {
"line": 7,
"column": 5
},
"identifierName": "B"
},
"name": "B"
},
"optional": true,
"property": {
"type": "Identifier",
"start": 47,
"end": 48,
"loc": {
"start": {
"line": 7,
"column": 7
},
"end": {
"line": 7,
"column": 8
},
"identifierName": "C"
},
"name": "C"
},
"computed": false
},
"arguments": [
{
"type": "Identifier",
"start": 51,
"end": 52,
"loc": {
"start": {
"line": 7,
"column": 11
},
"end": {
"line": 7,
"column": 12
},
"identifierName": "a"
},
"name": "a"
},
{
"type": "Identifier",
"start": 54,
"end": 55,
"loc": {
"start": {
"line": 7,
"column": 14
},
"end": {
"line": 7,
"column": 15
},
"identifierName": "b"
},
"name": "b"
}
],
"optional": true
}
},
{
"type": "ExpressionStatement",
"start": 58,
"end": 66,
"loc": {
"start": {
"line": 9,
"column": 0
},
"end": {
"line": 9,
"column": 8
}
},
"expression": {
"type": "NewExpression",
"start": 58,
"end": 66,
"loc": {
"start": {
"line": 9,
"column": 0
},
"end": {
"line": 9,
"column": 8
}
},
"callee": {
"type": "MemberExpression",
"start": 62,
"end": 66,
"loc": {
"start": {
"line": 9,
"column": 4
},
"end": {
"line": 9,
"column": 8
}
},
"object": {
"type": "Identifier",
"start": 62,
"end": 63,
"loc": {
"start": {
"line": 9,
"column": 4
},
"end": {
"line": 9,
"column": 5
},
"identifierName": "B"
},
"name": "B"
},
"optional": true,
"property": {
"type": "Identifier",
"start": 65,
"end": 66,
"loc": {
"start": {
"line": 9,
"column": 7
},
"end": {
"line": 9,
"column": 8
},
"identifierName": "C"
},
"name": "C"
},
"computed": false
},
"arguments": []
}
} }
], ],
"directives": [] "directives": []

3
test/fixtures/experimental/optional-chaining/conditional-decimal/actual.js vendored Normal file
View File

@ -0,0 +1,3 @@
true?.3:0
true ? .3 : 0

206
test/fixtures/experimental/optional-chaining/conditional-decimal/expected.json vendored Normal file
View File

@ -0,0 +1,206 @@
{
"type": "File",
"start": 0,
"end": 24,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 3,
"column": 13
}
},
"program": {
"type": "Program",
"start": 0,
"end": 24,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 3,
"column": 13
}
},
"sourceType": "script",
"body": [
{
"type": "ExpressionStatement",
"start": 0,
"end": 9,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 9
}
},
"expression": {
"type": "ConditionalExpression",
"start": 0,
"end": 9,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 9
}
},
"test": {
"type": "BooleanLiteral",
"start": 0,
"end": 4,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 4
}
},
"value": true
},
"consequent": {
"type": "NumericLiteral",
"start": 5,
"end": 7,
"loc": {
"start": {
"line": 1,
"column": 5
},
"end": {
"line": 1,
"column": 7
}
},
"extra": {
"rawValue": 0.3,
"raw": ".3"
},
"value": 0.3
},
"alternate": {
"type": "NumericLiteral",
"start": 8,
"end": 9,
"loc": {
"start": {
"line": 1,
"column": 8
},
"end": {
"line": 1,
"column": 9
}
},
"extra": {
"rawValue": 0,
"raw": "0"
},
"value": 0
}
}
},
{
"type": "ExpressionStatement",
"start": 11,
"end": 24,
"loc": {
"start": {
"line": 3,
"column": 0
},
"end": {
"line": 3,
"column": 13
}
},
"expression": {
"type": "ConditionalExpression",
"start": 11,
"end": 24,
"loc": {
"start": {
"line": 3,
"column": 0
},
"end": {
"line": 3,
"column": 13
}
},
"test": {
"type": "BooleanLiteral",
"start": 11,
"end": 15,
"loc": {
"start": {
"line": 3,
"column": 0
},
"end": {
"line": 3,
"column": 4
}
},
"value": true
},
"consequent": {
"type": "NumericLiteral",
"start": 18,
"end": 20,
"loc": {
"start": {
"line": 3,
"column": 7
},
"end": {
"line": 3,
"column": 9
}
},
"extra": {
"rawValue": 0.3,
"raw": ".3"
},
"value": 0.3
},
"alternate": {
"type": "NumericLiteral",
"start": 23,
"end": 24,
"loc": {
"start": {
"line": 3,
"column": 12
},
"end": {
"line": 3,
"column": 13
}
},
"extra": {
"rawValue": 0,
"raw": "0"
},
"value": 0
}
}
}
],
"directives": []
}
}

3
test/fixtures/experimental/optional-chaining/conditional-decimal/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"plugins": ["optionalChaining"]
}

4
test/fixtures/experimental/optional-chaining/function-call/actual.js vendored
View File

@ -1,3 +1,7 @@
func?.() func?.()
func?.(a, b) func?.(a, b)
a?.func?.()
a?.func?.(a, b)

249
test/fixtures/experimental/optional-chaining/function-call/expected.json vendored
View File

@ -1,29 +1,29 @@
{ {
"type": "File", "type": "File",
"start": 0, "start": 0,
"end": 22, "end": 52,
"loc": { "loc": {
"start": { "start": {
"line": 1, "line": 1,
"column": 0 "column": 0
}, },
"end": { "end": {
"line": 3, "line": 7,
"column": 12 "column": 15
} }
}, },
"program": { "program": {
"type": "Program", "type": "Program",
"start": 0, "start": 0,
"end": 22, "end": 52,
"loc": { "loc": {
"start": { "start": {
"line": 1, "line": 1,
"column": 0 "column": 0
}, },
"end": { "end": {
"line": 3, "line": 7,
"column": 12 "column": 15
} }
}, },
"sourceType": "script", "sourceType": "script",
@ -56,6 +56,23 @@
"column": 8 "column": 8
} }
}, },
"callee": {
"type": "Identifier",
"start": 0,
"end": 4,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 4
},
"identifierName": "func"
},
"name": "func"
},
"arguments": [], "arguments": [],
"optional": true "optional": true
} }
@ -88,6 +105,23 @@
"column": 12 "column": 12
} }
}, },
"callee": {
"type": "Identifier",
"start": 10,
"end": 14,
"loc": {
"start": {
"line": 3,
"column": 0
},
"end": {
"line": 3,
"column": 4
},
"identifierName": "func"
},
"name": "func"
},
"arguments": [ "arguments": [
{ {
"type": "Identifier", "type": "Identifier",
@ -126,8 +160,209 @@
], ],
"optional": true "optional": true
} }
},
{
"type": "ExpressionStatement",
"start": 24,
"end": 35,
"loc": {
"start": {
"line": 5,
"column": 0
},
"end": {
"line": 5,
"column": 11
}
},
"expression": {
"type": "CallExpression",
"start": 24,
"end": 35,
"loc": {
"start": {
"line": 5,
"column": 0
},
"end": {
"line": 5,
"column": 11
}
},
"callee": {
"type": "MemberExpression",
"start": 24,
"end": 31,
"loc": {
"start": {
"line": 5,
"column": 0
},
"end": {
"line": 5,
"column": 7
}
},
"object": {
"type": "Identifier",
"start": 24,
"end": 25,
"loc": {
"start": {
"line": 5,
"column": 0
},
"end": {
"line": 5,
"column": 1
},
"identifierName": "a"
},
"name": "a"
},
"optional": true,
"property": {
"type": "Identifier",
"start": 27,
"end": 31,
"loc": {
"start": {
"line": 5,
"column": 3
},
"end": {
"line": 5,
"column": 7
},
"identifierName": "func"
},
"name": "func"
},
"computed": false
},
"arguments": [],
"optional": true
}
},
{
"type": "ExpressionStatement",
"start": 37,
"end": 52,
"loc": {
"start": {
"line": 7,
"column": 0
},
"end": {
"line": 7,
"column": 15
}
},
"expression": {
"type": "CallExpression",
"start": 37,
"end": 52,
"loc": {
"start": {
"line": 7,
"column": 0
},
"end": {
"line": 7,
"column": 15
}
},
"callee": {
"type": "MemberExpression",
"start": 37,
"end": 44,
"loc": {
"start": {
"line": 7,
"column": 0
},
"end": {
"line": 7,
"column": 7
}
},
"object": {
"type": "Identifier",
"start": 37,
"end": 38,
"loc": {
"start": {
"line": 7,
"column": 0
},
"end": {
"line": 7,
"column": 1
},
"identifierName": "a"
},
"name": "a"
},
"optional": true,
"property": {
"type": "Identifier",
"start": 40,
"end": 44,
"loc": {
"start": {
"line": 7,
"column": 3
},
"end": {
"line": 7,
"column": 7
},
"identifierName": "func"
},
"name": "func"
},
"computed": false
},
"arguments": [
{
"type": "Identifier",
"start": 47,
"end": 48,
"loc": {
"start": {
"line": 7,
"column": 10
},
"end": {
"line": 7,
"column": 11
},
"identifierName": "a"
},
"name": "a"
},
{
"type": "Identifier",
"start": 50,
"end": 51,
"loc": {
"start": {
"line": 7,
"column": 13
},
"end": {
"line": 7,
"column": 14
},
"identifierName": "b"
},
"name": "b"
}
],
"optional": true
}
} }
], ],
"directives": [] "directives": []
} }
} }

6
test/fixtures/experimental/optional-chaining/member-access-bracket/actual.js vendored
View File

@ -1 +1,7 @@
obj?.[expr] obj?.[expr]
obj?.[expr]?.[other]
obj?.[true]
obj?.[true]?.[true]

279
test/fixtures/experimental/optional-chaining/member-access-bracket/expected.json vendored
View File

@ -1,29 +1,29 @@
{ {
"type": "File", "type": "File",
"start": 0, "start": 0,
"end": 11, "end": 67,
"loc": { "loc": {
"start": { "start": {
"line": 1, "line": 1,
"column": 0 "column": 0
}, },
"end": { "end": {
"line": 1, "line": 7,
"column": 11 "column": 19
} }
}, },
"program": { "program": {
"type": "Program", "type": "Program",
"start": 0, "start": 0,
"end": 11, "end": 67,
"loc": { "loc": {
"start": { "start": {
"line": 1, "line": 1,
"column": 0 "column": 0
}, },
"end": { "end": {
"line": 1, "line": 7,
"column": 11 "column": 19
} }
}, },
"sourceType": "script", "sourceType": "script",
@ -73,7 +73,6 @@
}, },
"name": "obj" "name": "obj"
}, },
"optional": true,
"property": { "property": {
"type": "Identifier", "type": "Identifier",
"start": 6, "start": 6,
@ -91,7 +90,271 @@
}, },
"name": "expr" "name": "expr"
}, },
"computed": true "computed": true,
"optional": true
}
},
{
"type": "ExpressionStatement",
"start": 13,
"end": 33,
"loc": {
"start": {
"line": 3,
"column": 0
},
"end": {
"line": 3,
"column": 20
}
},
"expression": {
"type": "MemberExpression",
"start": 13,
"end": 33,
"loc": {
"start": {
"line": 3,
"column": 0
},
"end": {
"line": 3,
"column": 20
}
},
"object": {
"type": "MemberExpression",
"start": 13,
"end": 24,
"loc": {
"start": {
"line": 3,
"column": 0
},
"end": {
"line": 3,
"column": 11
}
},
"object": {
"type": "Identifier",
"start": 13,
"end": 16,
"loc": {
"start": {
"line": 3,
"column": 0
},
"end": {
"line": 3,
"column": 3
},
"identifierName": "obj"
},
"name": "obj"
},
"property": {
"type": "Identifier",
"start": 19,
"end": 23,
"loc": {
"start": {
"line": 3,
"column": 6
},
"end": {
"line": 3,
"column": 10
},
"identifierName": "expr"
},
"name": "expr"
},
"computed": true,
"optional": true
},
"property": {
"type": "Identifier",
"start": 27,
"end": 32,
"loc": {
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},
"end": {
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},
"identifierName": "other"
},
"name": "other"
},
"computed": true,
"optional": true
}
},
{
"type": "ExpressionStatement",
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"end": 46,
"loc": {
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"line": 5,
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},
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}
},
"expression": {
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"end": 46,
"loc": {
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},
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},
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},
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},
"identifierName": "obj"
},
"name": "obj"
},
"property": {
"type": "BooleanLiteral",
"start": 41,
"end": 45,
"loc": {
"start": {
"line": 5,
"column": 6
},
"end": {
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}
},
"value": true
},
"computed": true,
"optional": true
}
},
{
"type": "ExpressionStatement",
"start": 48,
"end": 67,
"loc": {
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"line": 7,
"column": 0
},
"end": {
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}
},
"expression": {
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"start": 48,
"end": 67,
"loc": {
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},
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"column": 19
}
},
"object": {
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"end": 59,
"loc": {
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},
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}
},
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"end": 51,
"loc": {
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},
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},
"identifierName": "obj"
},
"name": "obj"
},
"property": {
"type": "BooleanLiteral",
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"end": 58,
"loc": {
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},
"end": {
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}
},
"value": true
},
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},
"property": {
"type": "BooleanLiteral",
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"end": 66,
"loc": {
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"end": {
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}
},
"value": true
},
"computed": true,
"optional": true
} }
} }
], ],

2
test/fixtures/experimental/optional-chaining/member-access/actual.js vendored
View File

@ -1 +1,3 @@
foo?.bar foo?.bar
foo?.bar?.baz

112
test/fixtures/experimental/optional-chaining/member-access/expected.json vendored
View File

@ -1,29 +1,29 @@
{ {
"type": "File", "type": "File",
"start": 0, "start": 0,
"end": 8, "end": 23,
"loc": { "loc": {
"start": { "start": {
"line": 1, "line": 1,
"column": 0 "column": 0
}, },
"end": { "end": {
"line": 1, "line": 3,
"column": 8 "column": 13
} }
}, },
"program": { "program": {
"type": "Program", "type": "Program",
"start": 0, "start": 0,
"end": 8, "end": 23,
"loc": { "loc": {
"start": { "start": {
"line": 1, "line": 1,
"column": 0 "column": 0
}, },
"end": { "end": {
"line": 1, "line": 3,
"column": 8 "column": 13
} }
}, },
"sourceType": "script", "sourceType": "script",
@ -93,6 +93,106 @@
"optional": true, "optional": true,
"computed": false "computed": false
} }
},
{
"type": "ExpressionStatement",
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"end": 23,
"loc": {
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},
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}
},
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},
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}
},
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},
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}
},
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"end": 13,
"loc": {
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},
"end": {
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"column": 3
},
"identifierName": "foo"
},
"name": "foo"
},
"property": {
"type": "Identifier",
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"end": 18,
"loc": {
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},
"end": {
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},
"identifierName": "bar"
},
"name": "bar"
},
"optional": true,
"computed": false
},
"property": {
"type": "Identifier",
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"end": 23,
"loc": {
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"column": 10
},
"end": {
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"column": 13
},
"identifierName": "baz"
},
"name": "baz"
},
"optional": true,
"computed": false
}
} }
], ],
"directives": [] "directives": []