cerxes/babel
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Merge pull request #8289 from valtech-nyc/implement-smart-pipeline-in-parser

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Implement Smart Pipeline proposal in @babel/parser
This commit is contained in:
Sven Sauleau
2018-12-03 19:28:45 +01:00
committed by GitHub
parent fa9df678ac 100b38784d
commit fdc869ce16
158 changed files with 8496 additions and 86 deletions
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51
packages/babel-parser/src/tokenizer/index.js
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@@ -374,7 +374,36 @@ export default class Tokenizer extends LocationParser {
// into it.
//
// All in the name of speed.
//
// number sign is "#"
readToken_numberSign(): void {
if (this.state.pos === 0 && this.readToken_interpreter()) {
return;
}
const nextPos = this.state.pos + 1;
const next = this.input.charCodeAt(nextPos);
if (next >= charCodes.digit0 && next <= charCodes.digit9) {
this.raise(this.state.pos, "Unexpected digit after hash token");
}
if (
(this.hasPlugin("classPrivateProperties") ||
this.hasPlugin("classPrivateMethods")) &&
this.state.classLevel > 0
) {
++this.state.pos;
this.finishToken(tt.hash);
return;
} else if (
this.getPluginOption("pipelineOperator", "proposal") === "smart"
) {
this.finishOp(tt.hash, 1);
} else {
this.raise(this.state.pos, "Unexpected character '#'");
}
}
readToken_dot(): void {
const next = this.input.charCodeAt(this.state.pos + 1);
if (next >= charCodes.digit0 && next <= charCodes.digit9) {
@@ -623,24 +652,8 @@ export default class Tokenizer extends LocationParser {
getTokenFromCode(code: number): void {
switch (code) {
case charCodes.numberSign:
if (this.state.pos === 0 && this.readToken_interpreter()) {
return;
}
if (
(this.hasPlugin("classPrivateProperties") ||
this.hasPlugin("classPrivateMethods")) &&
this.state.classLevel > 0
) {
++this.state.pos;
this.finishToken(tt.hash);
return;
} else {
this.raise(
this.state.pos,
`Unexpected character '${String.fromCodePoint(code)}'`,
);
}
this.readToken_numberSign();
return;
// The interpretation of a dot depends on whether it is followed
// by a digit or another two dots.