Skip to content

Commit

Permalink
Add parsing for parenless arrow bodies
Browse files Browse the repository at this point in the history
  • Loading branch information
mAAdhaTTah committed Feb 24, 2019
1 parent b08f341 commit a5e6ba3
Show file tree
Hide file tree
Showing 7 changed files with 738 additions and 1 deletion.
7 changes: 6 additions & 1 deletion packages/babel-parser/src/parser/expression.js
Expand Up @@ -2311,7 +2311,12 @@ export default class ExpressionParser extends LValParser {
const startPos = this.state.start;
const startLoc = this.state.startLoc;

const node = this.startNodeAt(this.state.start, this.state.startLoc);
const node = this.startNode();

if (this.lookahead().type === tt.arrow) {
this.state.potentialArrowAt = this.state.start;
}

node.body = this.parseExprOp(
this.parseMaybeUnary(),
startPos,
Expand Down
@@ -0,0 +1,3 @@
x => x
|> y => y + 1
|> z => z * 2
@@ -0,0 +1,3 @@
{
"plugins": [["pipelineOperator", { "proposal": "fsharp" }]]
}
@@ -0,0 +1,361 @@
{
"type": "File",
"start": 0,
"end": 38,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 3,
"column": 15
}
},
"program": {
"type": "Program",
"start": 0,
"end": 38,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 3,
"column": 15
}
},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "ExpressionStatement",
"start": 0,
"end": 38,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 3,
"column": 15
}
},
"expression": {
"type": "ArrowFunctionExpression",
"start": 0,
"end": 38,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 3,
"column": 15
}
},
"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": 38,
"loc": {
"start": {
"line": 1,
"column": 5
},
"end": {
"line": 3,
"column": 15
}
},
"left": {
"type": "PipelineHead",
"start": 9,
"end": 6,
"loc": {
"start": {
"line": 2,
"column": 2
},
"end": {
"line": 1,
"column": 6
}
},
"head": {
"type": "Identifier",
"start": 5,
"end": 6,
"loc": {
"start": {
"line": 1,
"column": 5
},
"end": {
"line": 1,
"column": 6
},
"identifierName": "x"
},
"name": "x"
}
},
"operator": "|>",
"right": {
"type": "PipelineBody",
"start": 12,
"end": 38,
"loc": {
"start": {
"line": 2,
"column": 5
},
"end": {
"line": 3,
"column": 15
}
},
"body": {
"type": "ArrowFunctionExpression",
"start": 12,
"end": 38,
"loc": {
"start": {
"line": 2,
"column": 5
},
"end": {
"line": 3,
"column": 15
}
},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start": 12,
"end": 13,
"loc": {
"start": {
"line": 2,
"column": 5
},
"end": {
"line": 2,
"column": 6
},
"identifierName": "y"
},
"name": "y"
}
],
"body": {
"type": "BinaryExpression",
"start": 17,
"end": 38,
"loc": {
"start": {
"line": 2,
"column": 10
},
"end": {
"line": 3,
"column": 15
}
},
"left": {
"type": "BinaryExpression",
"start": 17,
"end": 22,
"loc": {
"start": {
"line": 2,
"column": 10
},
"end": {
"line": 2,
"column": 15
}
},
"left": {
"type": "Identifier",
"start": 17,
"end": 18,
"loc": {
"start": {
"line": 2,
"column": 10
},
"end": {
"line": 2,
"column": 11
},
"identifierName": "y"
},
"name": "y"
},
"operator": "+",
"right": {
"type": "NumericLiteral",
"start": 21,
"end": 22,
"loc": {
"start": {
"line": 2,
"column": 14
},
"end": {
"line": 2,
"column": 15
}
},
"extra": {
"rawValue": 1,
"raw": "1"
},
"value": 1
}
},
"operator": "|>",
"right": {
"type": "PipelineBody",
"start": 28,
"end": 38,
"loc": {
"start": {
"line": 3,
"column": 5
},
"end": {
"line": 3,
"column": 15
}
},
"body": {
"type": "ArrowFunctionExpression",
"start": 28,
"end": 38,
"loc": {
"start": {
"line": 3,
"column": 5
},
"end": {
"line": 3,
"column": 15
}
},
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start": 28,
"end": 29,
"loc": {
"start": {
"line": 3,
"column": 5
},
"end": {
"line": 3,
"column": 6
},
"identifierName": "z"
},
"name": "z"
}
],
"body": {
"type": "BinaryExpression",
"start": 33,
"end": 38,
"loc": {
"start": {
"line": 3,
"column": 10
},
"end": {
"line": 3,
"column": 15
}
},
"left": {
"type": "Identifier",
"start": 33,
"end": 34,
"loc": {
"start": {
"line": 3,
"column": 10
},
"end": {
"line": 3,
"column": 11
},
"identifierName": "z"
},
"name": "z"
},
"operator": "*",
"right": {
"type": "NumericLiteral",
"start": 37,
"end": 38,
"loc": {
"start": {
"line": 3,
"column": 14
},
"end": {
"line": 3,
"column": 15
}
},
"extra": {
"rawValue": 2,
"raw": "2"
},
"value": 2
}
}
}
}
}
}
}
}
}
}
],
"directives": []
}
}
@@ -0,0 +1 @@
x => x |> y => y + 1 |> z => z * 2
@@ -0,0 +1,3 @@
{
"plugins": [["pipelineOperator", { "proposal": "fsharp" }]]
}

0 comments on commit a5e6ba3

Please sign in to comment.