cerxes/babel
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perf: Move input to state and precalculate length

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This also fixes a bug with async functions
This commit is contained in:
Daniel Tschinder
2019-01-15 12:45:36 -08:00
parent ae154c86ed
commit 2dc1c91955
12 changed files with 160 additions and 126 deletions
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11
packages/babel-parser/src/parser/expression.js
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@@ -1146,7 +1146,11 @@ export default class ExpressionParser extends LValParser {
const node = this.startNodeAt(startPos, startLoc);
this.addExtra(node, "rawValue", value);
this.addExtra(node, "raw", this.input.slice(startPos, this.state.end));
this.addExtra(
node,
"raw",
this.state.input.slice(startPos, this.state.end),
);
node.value = value;
this.next();
return this.finishNode(node, type);
@@ -1365,7 +1369,7 @@ export default class ExpressionParser extends LValParser {
}
}
elem.value = {
raw: this.input
raw: this.state.input
.slice(this.state.start, this.state.end)
.replace(/\r\n?/g, "\n"),
cooked: this.state.value,
@@ -1967,7 +1971,8 @@ export default class ExpressionParser extends LValParser {
if (
(name === "class" || name === "function") &&
(this.state.lastTokEnd !== this.state.lastTokStart + 1 ||
this.input.charCodeAt(this.state.lastTokStart) !== charCodes.dot)
this.state.input.charCodeAt(this.state.lastTokStart) !==
charCodes.dot)
) {
this.state.context.pop();
}