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Implement f# pipeline in parser (#9450)

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This commit is contained in:
James DiGioia 2019-05-14 16:12:17 -04:00 committed by Nicolò Ribaudo
parent 0a98814329
commit 6b8a37c413
54 changed files with 4295 additions and 19 deletions
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92
packages/babel-parser/src/parser/expression.js
View File

@ -331,8 +331,11 @@ export default class ExpressionParser extends LValParser {
const prec = this.state.type.binop; const prec = this.state.type.binop;
if (prec != null && (!noIn || !this.match(tt._in))) { if (prec != null && (!noIn || !this.match(tt._in))) {
if (prec > minPrec) { if (prec > minPrec) {
const node = this.startNodeAt(leftStartPos, leftStartLoc);
const operator = this.state.value; const operator = this.state.value;
if (operator === "|>" && this.state.inFSharpPipelineDirectBody) {
return left;
}
const node = this.startNodeAt(leftStartPos, leftStartLoc);
node.left = left; node.left = left;
node.operator = operator; node.operator = operator;
if ( if (
@ -406,18 +409,23 @@ export default class ExpressionParser extends LValParser {
prec: number, prec: number,
noIn: ?boolean, noIn: ?boolean,
): N.Expression { ): N.Expression {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
switch (op) { switch (op) {
case tt.pipeline: case tt.pipeline:
if (this.getPluginOption("pipelineOperator", "proposal") === "smart") { switch (this.getPluginOption("pipelineOperator", "proposal")) {
const startPos = this.state.start; case "smart":
const startLoc = this.state.startLoc; return this.withTopicPermittingContext(() => {
return this.withTopicPermittingContext(() => { return this.parseSmartPipelineBody(
return this.parseSmartPipelineBody( this.parseExprOpBaseRightExpr(op, prec, noIn),
this.parseExprOpBaseRightExpr(op, prec, noIn), startPos,
startPos, startLoc,
startLoc, );
); });
}); case "fsharp":
return this.withSoloAwaitPermittingContext(() => {
return this.parseFSharpPipelineBody(prec, noIn);
});
} }
// falls through // falls through
@ -766,6 +774,8 @@ export default class ExpressionParser extends LValParser {
const elts = []; const elts = [];
let innerParenStart; let innerParenStart;
let first = true; let first = true;
const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody;
this.state.inFSharpPipelineDirectBody = false;
while (!this.eat(close)) { while (!this.eat(close)) {
if (first) { if (first) {
@ -804,6 +814,8 @@ export default class ExpressionParser extends LValParser {
this.unexpected(); this.unexpected();
} }
this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
return elts; return elts;
} }
@ -969,7 +981,10 @@ export default class ExpressionParser extends LValParser {
case tt.parenL: case tt.parenL:
return this.parseParenAndDistinguishExpression(canBeArrow); return this.parseParenAndDistinguishExpression(canBeArrow);
case tt.bracketL: case tt.bracketL: {
const oldInFSharpPipelineDirectBody = this.state
.inFSharpPipelineDirectBody;
this.state.inFSharpPipelineDirectBody = false;
node = this.startNode(); node = this.startNode();
this.next(); this.next();
node.elements = this.parseExprList( node.elements = this.parseExprList(
@ -985,11 +1000,17 @@ export default class ExpressionParser extends LValParser {
// expression by calling toReferencedListDeep. // expression by calling toReferencedListDeep.
this.toReferencedList(node.elements); this.toReferencedList(node.elements);
} }
this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
return this.finishNode(node, "ArrayExpression"); return this.finishNode(node, "ArrayExpression");
}
case tt.braceL: case tt.braceL: {
return this.parseObj(false, refShorthandDefaultPos); const oldInFSharpPipelineDirectBody = this.state
.inFSharpPipelineDirectBody;
this.state.inFSharpPipelineDirectBody = false;
const ret = this.parseObj(false, refShorthandDefaultPos);
this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
return ret;
}
case tt._function: case tt._function:
return this.parseFunctionExpression(); return this.parseFunctionExpression();
@ -1177,9 +1198,11 @@ export default class ExpressionParser extends LValParser {
const oldMaybeInArrowParameters = this.state.maybeInArrowParameters; const oldMaybeInArrowParameters = this.state.maybeInArrowParameters;
const oldYieldPos = this.state.yieldPos; const oldYieldPos = this.state.yieldPos;
const oldAwaitPos = this.state.awaitPos; const oldAwaitPos = this.state.awaitPos;
const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody;
this.state.maybeInArrowParameters = true; this.state.maybeInArrowParameters = true;
this.state.yieldPos = 0; this.state.yieldPos = 0;
this.state.awaitPos = 0; this.state.awaitPos = 0;
this.state.inFSharpPipelineDirectBody = false;
const innerStartPos = this.state.start; const innerStartPos = this.state.start;
const innerStartLoc = this.state.startLoc; const innerStartLoc = this.state.startLoc;
@ -1233,6 +1256,7 @@ export default class ExpressionParser extends LValParser {
this.expect(tt.parenR); this.expect(tt.parenR);
this.state.maybeInArrowParameters = oldMaybeInArrowParameters; this.state.maybeInArrowParameters = oldMaybeInArrowParameters;
this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
let arrowNode = this.startNodeAt(startPos, startLoc); let arrowNode = this.startNodeAt(startPos, startLoc);
if ( if (
@ -2114,7 +2138,9 @@ export default class ExpressionParser extends LValParser {
); );
} }
node.argument = this.parseMaybeUnary(); if (!this.state.soloAwait) {
node.argument = this.parseMaybeUnary();
}
return this.finishNode(node, "AwaitExpression"); return this.finishNode(node, "AwaitExpression");
} }
@ -2304,6 +2330,17 @@ export default class ExpressionParser extends LValParser {
} }
} }
withSoloAwaitPermittingContext<T>(callback: () => T): T {
const outerContextSoloAwaitState = this.state.soloAwait;
this.state.soloAwait = true;
try {
return callback();
} finally {
this.state.soloAwait = outerContextSoloAwaitState;
}
}
// Register the use of a primary topic reference (`#`) within the current // Register the use of a primary topic reference (`#`) within the current
// topic context. // topic context.
registerTopicReference(): void { registerTopicReference(): void {
@ -2320,4 +2357,25 @@ export default class ExpressionParser extends LValParser {
this.state.topicContext.maxTopicIndex >= 0 this.state.topicContext.maxTopicIndex >= 0
); );
} }
parseFSharpPipelineBody(prec: number, noIn: ?boolean): N.Expression {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
this.state.potentialArrowAt = this.state.start;
const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody;
this.state.inFSharpPipelineDirectBody = true;
const ret = this.parseExprOp(
this.parseMaybeUnary(),
startPos,
startLoc,
prec,
noIn,
);
this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
return ret;
}
} }

2
packages/babel-parser/src/plugin-utils.js
View File

@ -38,7 +38,7 @@ export function getPluginOption(
return null; return null;
} }
const PIPELINE_PROPOSALS = ["minimal", "smart"]; const PIPELINE_PROPOSALS = ["minimal", "smart", "fsharp"];
export function validatePlugins(plugins: PluginList) { export function validatePlugins(plugins: PluginList) {
if (hasPlugin(plugins, "decorators")) { if (hasPlugin(plugins, "decorators")) {

4
packages/babel-parser/src/tokenizer/state.js
View File

@ -77,6 +77,10 @@ export default class State {
maxTopicIndex: null, maxTopicIndex: null,
}; };
// For the F# plugin
soloAwait: boolean = false;
inFSharpPipelineDirectBody: boolean = false;
// Check whether we are in a (nested) class or not. // Check whether we are in a (nested) class or not.
classLevel: number = 0; classLevel: number = 0;

2
packages/babel-parser/test/fixtures/experimental/pipeline-operator/invalid-proposal/options.json vendored
View File

@ -1,4 +1,4 @@
{ {
"plugins": [["pipelineOperator", { "proposal": "invalid" }]], "plugins": [["pipelineOperator", { "proposal": "invalid" }]],
"throws": "'pipelineOperator' requires 'proposal' option whose value should be one of: 'minimal', 'smart'" "throws": "'pipelineOperator' requires 'proposal' option whose value should be one of: 'minimal', 'smart', 'fsharp'"
} }

1
packages/babel-parser/test/fixtures/experimental/pipeline-operator/proposal-fsharp-arrow-and-array-in-body-with-operator/input.js vendored Normal file
View File

@ -0,0 +1 @@
x => x |> [y => y + 1 |> z => z * 2]

3
packages/babel-parser/test/fixtures/experimental/pipeline-operator/proposal-fsharp-arrow-and-array-in-body-with-operator/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"plugins": [["pipelineOperator", { "proposal": "fsharp" }]]
}

333
packages/babel-parser/test/fixtures/experimental/pipeline-operator/proposal-fsharp-arrow-and-array-in-body-with-operator/output.json vendored Normal file
View File

@ -0,0 +1,333 @@
{
"type": "File",
"start": 0,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 36
}
},
"program": {
"type": "Program",
"start": 0,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 36
}
},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "ExpressionStatement",
"start": 0,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 36
}
},
"expression": {
"type": "ArrowFunctionExpression",
"start": 0,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 36
}
},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start": 0,
"end": 1,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 1
},
"identifierName": "x"
},
"name": "x"
}
],
"body": {
"type": "BinaryExpression",
"start": 5,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 5
},
"end": {
"line": 1,
"column": 36
}
},
"left": {
"type": "Identifier",
"start": 5,
"end": 6,
"loc": {
"start": {
"line": 1,
"column": 5
},
"end": {
"line": 1,
"column": 6
},
"identifierName": "x"
},
"name": "x"
},
"operator": "|>",
"right": {
"type": "ArrayExpression",
"start": 10,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 10
},
"end": {
"line": 1,
"column": 36
}
},
"elements": [
{
"type": "ArrowFunctionExpression",
"start": 11,
"end": 35,
"loc": {
"start": {
"line": 1,
"column": 11
},
"end": {
"line": 1,
"column": 35
}
},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start": 11,
"end": 12,
"loc": {
"start": {
"line": 1,
"column": 11
},
"end": {
"line": 1,
"column": 12
},
"identifierName": "y"
},
"name": "y"
}
],
"body": {
"type": "BinaryExpression",
"start": 16,
"end": 35,
"loc": {
"start": {
"line": 1,
"column": 16
},
"end": {
"line": 1,
"column": 35
}
},
"left": {
"type": "BinaryExpression",
"start": 16,
"end": 21,
"loc": {
"start": {
"line": 1,
"column": 16
},
"end": {
"line": 1,
"column": 21
}
},
"left": {
"type": "Identifier",
"start": 16,
"end": 17,
"loc": {
"start": {
"line": 1,
"column": 16
},
"end": {
"line": 1,
"column": 17
},
"identifierName": "y"
},
"name": "y"
},
"operator": "+",
"right": {
"type": "NumericLiteral",
"start": 20,
"end": 21,
"loc": {
"start": {
"line": 1,
"column": 20
},
"end": {
"line": 1,
"column": 21
}
},
"extra": {
"rawValue": 1,
"raw": "1"
},
"value": 1
}
},
"operator": "|>",
"right": {
"type": "ArrowFunctionExpression",
"start": 25,
"end": 35,
"loc": {
"start": {
"line": 1,
"column": 25
},
"end": {
"line": 1,
"column": 35
}
},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start": 25,
"end": 26,
"loc": {
"start": {
"line": 1,
"column": 25
},
"end": {
"line": 1,
"column": 26
},
"identifierName": "z"
},
"name": "z"
}
],
"body": {
"type": "BinaryExpression",
"start": 30,
"end": 35,
"loc": {
"start": {
"line": 1,
"column": 30
},
"end": {
"line": 1,
"column": 35
}
},
"left": {
"type": "Identifier",
"start": 30,
"end": 31,
"loc": {
"start": {
"line": 1,
"column": 30
},
"end": {
"line": 1,
"column": 31
},
"identifierName": "z"
},
"name": "z"
},
"operator": "*",
"right": {
"type": "NumericLiteral",
"start": 34,
"end": 35,
"loc": {
"start": {
"line": 1,
"column": 34
},
"end": {
"line": 1,
"column": 35
}
},
"extra": {
"rawValue": 2,
"raw": "2"
},
"value": 2
}
}
}
}
}
]
}
}
}
}
],
"directives": []
}
}

1
packages/babel-parser/test/fixtures/experimental/pipeline-operator/proposal-fsharp-arrow-and-array-in-body/input.js vendored Normal file
View File

@ -0,0 +1 @@
x => x |> [y => y + 1] |> z => z * 2

3
packages/babel-parser/test/fixtures/experimental/pipeline-operator/proposal-fsharp-arrow-and-array-in-body/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"plugins": [["pipelineOperator", { "proposal": "fsharp" }]]
}

333
packages/babel-parser/test/fixtures/experimental/pipeline-operator/proposal-fsharp-arrow-and-array-in-body/output.json vendored Normal file
View File

@ -0,0 +1,333 @@
{
"type": "File",
"start": 0,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 36
}
},
"program": {
"type": "Program",
"start": 0,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 36
}
},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "ExpressionStatement",
"start": 0,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 36
}
},
"expression": {
"type": "ArrowFunctionExpression",
"start": 0,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 36
}
},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start": 0,
"end": 1,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 1
},
"identifierName": "x"
},
"name": "x"
}
],
"body": {
"type": "BinaryExpression",
"start": 5,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 5
},
"end": {
"line": 1,
"column": 36
}
},
"left": {
"type": "BinaryExpression",
"start": 5,
"end": 22,
"loc": {
"start": {
"line": 1,
"column": 5
},
"end": {
"line": 1,
"column": 22
}
},
"left": {
"type": "Identifier",
"start": 5,
"end": 6,
"loc": {
"start": {
"line": 1,
"column": 5
},
"end": {
"line": 1,
"column": 6
},
"identifierName": "x"
},
"name": "x"
},
"operator": "|>",
"right": {
"type": "ArrayExpression",
"start": 10,
"end": 22,
"loc": {
"start": {
"line": 1,
"column": 10
},
"end": {
"line": 1,
"column": 22
}
},
"elements": [
{
"type": "ArrowFunctionExpression",
"start": 11,
"end": 21,
"loc": {
"start": {
"line": 1,
"column": 11
},
"end": {
"line": 1,
"column": 21
}
},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start": 11,
"end": 12,
"loc": {
"start": {
"line": 1,
"column": 11
},
"end": {
"line": 1,
"column": 12
},
"identifierName": "y"
},
"name": "y"
}
],
"body": {
"type": "BinaryExpression",
"start": 16,
"end": 21,
"loc": {
"start": {
"line": 1,
"column": 16
},
"end": {
"line": 1,
"column": 21
}
},
"left": {
"type": "Identifier",
"start": 16,
"end": 17,
"loc": {
"start": {
"line": 1,
"column": 16
},
"end": {
"line": 1,
"column": 17
},
"identifierName": "y"
},
"name": "y"
},
"operator": "+",
"right": {
"type": "NumericLiteral",
"start": 20,
"end": 21,
"loc": {
"start": {
"line": 1,
"column": 20
},
"end": {
"line": 1,
"column": 21
}
},
"extra": {
"rawValue": 1,
"raw": "1"
},
"value": 1
}
}
}
]
}
},
"operator": "|>",
"right": {
"type": "ArrowFunctionExpression",
"start": 26,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 26
},
"end": {
"line": 1,
"column": 36
}
},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start": 26,
"end": 27,
"loc": {
"start": {
"line": 1,
"column": 26
},
"end": {
"line": 1,
"column": 27
},
"identifierName": "z"
},
"name": "z"
}
],
"body": {
"type": "BinaryExpression",
"start": 31,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 31
},
"end": {
"line": 1,
"column": 36
}
},
"left": {
"type": "Identifier",
"start": 31,
"end": 32,
"loc": {
"start": {
"line": 1,
"column": 31
},
"end": {
"line": 1,
"column": 32
},
"identifierName": "z"
},
"name": "z"
},
"operator": "*",
"right": {
"type": "NumericLiteral",
"start": 35,
"end": 36,
"loc": {
"start": {
"line": 1,
"column": 35
},
"end": {
"line": 1,
"column": 36
}
},
"extra": {
"rawValue": 2,
"raw": "2"
},
"value": 2
}
}
}
}
}
}
],
"directives": []
}
}

1
packages/babel-parser/test/fixtures/experimental/pipeline-operator/proposal-fsharp-arrow-and-assignment-in-body/input.js vendored Normal file
View File

@ -0,0 +1 @@
x => x |> foo(x = 1 |> foo);

3
packages/babel-parser/test/fixtures/experimental/pipeline-operator/proposal-fsharp-arrow-and-assignment-in-body/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"plugins": [["pipelineOperator", { "proposal": "fsharp" }]]
}

240
packages/babel-parser/test/fixtures/experimental/pipeline-operator/proposal-fsharp-arrow-and-assignment-in-body/output.json vendored Normal file
View File

@ -0,0 +1,240 @@
{
"type": "File",
"start": 0,
"end": 28,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 28
}
},
"program": {
"type": "Program",
"start": 0,
"end": 28,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 28
}
},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "ExpressionStatement",
"start": 0,
"end": 28,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 28
}
},
"expression": {
"type": "ArrowFunctionExpression",
"start": 0,
"end": 27,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 27
}
},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start": 0,
"end": 1,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 1
},
"identifierName": "x"
},
"name": "x"
}
],
"body": {
"type": "BinaryExpression",
"start": 5,
"end": 27,
"loc": {
"start": {
"line": 1,
"column": 5
},
"end": {
"line": 1,
"column": 27
}
},
"left": {
"type": "Identifier",
"start": 5,
"end": 6,
"loc": {
"start": {
"line": 1,
"column": 5
},
"end": {
"line": 1,
"column": 6
},
"identifierName": "x"
},
"name": "x"
},
"operator": "|>",
"right": {
"type": "CallExpression",
"start": 10,
"end": 27,
"loc": {
"start": {
"line": 1,
"column": 10
},
"end": {
"line": 1,
"column": 27
}
},
"callee": {
"type": "Identifier",
"start": 10,
"end": 13,
"loc": {
"start": {
"line": 1,
"column": 10
},
"end": {
"line": 1,
"column": 13
},
"identifierName": "foo"
},
"name": "foo"
},
"arguments": [
{
"type": "AssignmentExpression",
"start": 14,
"end": 26,
"loc": {
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