Faster tokenizer lookahead (#13341)
* refactor: simplify token context structure * add benchmark * perf: return a sub-state on tokenizer lookahead * Update packages/babel-parser/src/tokenizer/index.js Co-authored-by: Brian Ng <bng412@gmail.com> * Update packages/babel-parser/src/tokenizer/index.js Co-authored-by: Brian Ng <bng412@gmail.com> * remove irrelevant comment * fix: guard curPosition with isLookahead * add test cases Co-authored-by: Brian Ng <bng412@gmail.com>
This commit is contained in:
Huáng Jùnliàng
GitHub
parent
b1f57e5fb5
commit
acf2a10899
@ -0,0 +1,22 @@
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import Benchmark from "benchmark";
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import baseline from "@babel-baseline/parser";
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import current from "../../lib/index.js";
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import { report } from "../util.mjs";
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const suite = new Benchmark.Suite();
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function createInput(length) {
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return "type A = " + "| (x) => void".repeat(length);
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}
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function benchCases(name, implementation, options) {
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for (const length of [256, 512, 1024, 2048]) {
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const input = createInput(length);
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suite.add(`${name} ${length} arrow function types`, () => {
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implementation.parse(input, options);
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});
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}
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}
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benchCases("baseline", baseline, { plugins: ["flow"] });
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benchCases("current", current, { plugins: ["flow"] });
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suite.on("cycle", report).run();
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@ -9,7 +9,6 @@ import type Parser from "../../parser";
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import { types as tt, type TokenType } from "../../tokenizer/types";
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import * as N from "../../types";
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import type { Pos, Position } from "../../util/location";
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import type State from "../../tokenizer/state";
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import { types as tc } from "../../tokenizer/context";
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import * as charCodes from "charcodes";
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import { isIteratorStart, isKeyword } from "../../util/identifier";
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@ -154,7 +153,7 @@ function hasTypeImportKind(node: N.Node): boolean {
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return node.importKind === "type" || node.importKind === "typeof";
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}
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function isMaybeDefaultImport(state: State): boolean {
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function isMaybeDefaultImport(state: { type: TokenType, value: any }): boolean {
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return (
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(state.type === tt.name || !!state.type.keyword) && state.value !== "from"
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);
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@ -15,6 +15,10 @@ import { isIdentifierChar, isIdentifierStart } from "../../util/identifier";
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import type { Position } from "../../util/location";
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import { isNewLine } from "../../util/whitespace";
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import { Errors, makeErrorTemplates, ErrorCodes } from "../../parser/error";
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import type { LookaheadState } from "../../tokenizer/state";
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import State from "../../tokenizer/state";
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type JSXLookaheadState = LookaheadState & { inPropertyName: boolean };
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const HEX_NUMBER = /^[\da-fA-F]+$/;
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const DECIMAL_NUMBER = /^\d+$/;
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@ -573,6 +577,14 @@ export default (superClass: Class<Parser>): Class<Parser> =>
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}
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}
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createLookaheadState(state: State): JSXLookaheadState {
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const lookaheadState = ((super.createLookaheadState(
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state,
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): any): JSXLookaheadState);
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lookaheadState.inPropertyName = state.inPropertyName;
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return lookaheadState;
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}
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getTokenFromCode(code: number): void {
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if (this.state.inPropertyName) return super.getTokenFromCode(code);
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@ -7,22 +7,15 @@
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import { types as tt } from "./types";
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export class TokContext {
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constructor(
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token: string,
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isExpr?: boolean,
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preserveSpace?: boolean,
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override?: ?Function, // Takes a Tokenizer as a this-parameter, and returns void.
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) {
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constructor(token: string, isExpr?: boolean, preserveSpace?: boolean) {
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this.token = token;
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this.isExpr = !!isExpr;
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this.preserveSpace = !!preserveSpace;
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this.override = override;
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}
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token: string;
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isExpr: boolean;
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preserveSpace: boolean;
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override: ?Function;
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}
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export const types: {
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@ -34,7 +27,7 @@ export const types: {
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templateQuasi: new TokContext("${", false),
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parenStatement: new TokContext("(", false),
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parenExpression: new TokContext("(", true),
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template: new TokContext("`", true, true, p => p.readTmplToken()),
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template: new TokContext("`", true, true),
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functionExpression: new TokContext("function", true),
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functionStatement: new TokContext("function", false),
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};
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@ -19,6 +19,7 @@ import {
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skipWhiteSpace,
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} from "../util/whitespace";
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import State from "./state";
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import type { LookaheadState } from "./state";
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const VALID_REGEX_FLAGS = new Set(["g", "m", "s", "i", "y", "u"]);
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@ -144,11 +145,9 @@ export default class Tokenizer extends ParserErrors {
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// Move to the next token
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next(): void {
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if (!this.isLookahead) {
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this.checkKeywordEscapes();
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if (this.options.tokens) {
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this.pushToken(new Token(this.state));
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}
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this.checkKeywordEscapes();
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if (this.options.tokens) {
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this.pushToken(new Token(this.state));
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}
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this.state.lastTokEnd = this.state.end;
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@ -175,14 +174,51 @@ export default class Tokenizer extends ParserErrors {
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return this.state.type === type;
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}
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// TODO
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/**
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* Create a LookaheadState from current parser state
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*
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* @param {State} state
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* @returns {LookaheadState}
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* @memberof Tokenizer
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*/
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createLookaheadState(state: State): LookaheadState {
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return {
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pos: state.pos,
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value: null,
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type: state.type,
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start: state.start,
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end: state.end,
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lastTokEnd: state.end,
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context: [this.curContext()],
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exprAllowed: state.exprAllowed,
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inType: state.inType,
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};
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}
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lookahead(): State {
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/**
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* lookahead peeks the next token, skipping changes to token context and
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* comment stack. For performance it returns a limited LookaheadState
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* instead of full parser state.
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*
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* The { column, line } Loc info is not included in lookahead since such usage
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* is rare. Although it may return other location properties e.g. `curLine` and
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* `lineStart`, these properties are not listed in the LookaheadState interface
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* and thus the returned value is _NOT_ reliable.
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*
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* The tokenizer should make best efforts to avoid using any parser state
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* other than those defined in LookaheadState
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*
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* @returns {LookaheadState}
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* @memberof Tokenizer
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*/
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lookahead(): LookaheadState {
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const old = this.state;
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this.state = old.clone(true);
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// For performance we use a simpified tokenizer state structure
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// $FlowIgnore
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this.state = this.createLookaheadState(old);
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this.isLookahead = true;
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this.next();
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this.nextToken();
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this.isLookahead = false;
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const curr = this.state;
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@ -247,17 +283,16 @@ export default class Tokenizer extends ParserErrors {
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nextToken(): void {
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const curContext = this.curContext();
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if (!curContext?.preserveSpace) this.skipSpace();
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if (!curContext.preserveSpace) this.skipSpace();
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this.state.start = this.state.pos;
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this.state.startLoc = this.state.curPosition();
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if (!this.isLookahead) this.state.startLoc = this.state.curPosition();
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if (this.state.pos >= this.length) {
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this.finishToken(tt.eof);
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return;
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}
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const override = curContext?.override;
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if (override) {
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override(this);
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if (curContext === ct.template) {
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this.readTmplToken();
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} else {
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this.getTokenFromCode(this.codePointAtPos(this.state.pos));
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}
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@ -285,7 +320,8 @@ export default class Tokenizer extends ParserErrors {
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}
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skipBlockComment(): void {
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const startLoc = this.state.curPosition();
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let startLoc;
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if (!this.isLookahead) startLoc = this.state.curPosition();
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const start = this.state.pos;
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const end = this.input.indexOf("*/", this.state.pos + 2);
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if (end === -1) throw this.raise(start, Errors.UnterminatedComment);
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@ -304,6 +340,7 @@ export default class Tokenizer extends ParserErrors {
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// If we are doing a lookahead right now we need to advance the position (above code)
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// but we do not want to push the comment to the state.
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if (this.isLookahead) return;
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/*:: invariant(startLoc) */
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this.pushComment(
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true,
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@ -317,7 +354,8 @@ export default class Tokenizer extends ParserErrors {
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skipLineComment(startSkip: number): void {
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const start = this.state.pos;
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const startLoc = this.state.curPosition();
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let startLoc;
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if (!this.isLookahead) startLoc = this.state.curPosition();
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let ch = this.input.charCodeAt((this.state.pos += startSkip));
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if (this.state.pos < this.length) {
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while (!isNewLine(ch) && ++this.state.pos < this.length) {
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@ -328,6 +366,7 @@ export default class Tokenizer extends ParserErrors {
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// If we are doing a lookahead right now we need to advance the position (above code)
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// but we do not want to push the comment to the state.
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if (this.isLookahead) return;
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/*:: invariant(startLoc) */
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this.pushComment(
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false,
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@ -398,12 +437,14 @@ export default class Tokenizer extends ParserErrors {
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finishToken(type: TokenType, val: any): void {
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this.state.end = this.state.pos;
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this.state.endLoc = this.state.curPosition();
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const prevType = this.state.type;
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this.state.type = type;
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this.state.value = val;
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if (!this.isLookahead) this.updateContext(prevType);
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if (!this.isLookahead) {
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this.state.endLoc = this.state.curPosition();
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this.updateContext(prevType);
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}
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}
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// ### Token reading
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@ -178,3 +178,14 @@ export default class State {
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return state;
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}
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}
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export type LookaheadState = {
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pos: number,
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value: any,
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type: TokenType,
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start: number,
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end: number,
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/* Used only in readSlashToken */
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exprAllowed: boolean,
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inType: boolean,
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};
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2
packages/babel-parser/test/fixtures/typescript/export/internal-comments/input.ts
vendored
Normal file
2
packages/babel-parser/test/fixtures/typescript/export/internal-comments/input.ts
vendored
Normal file
@ -0,0 +1,2 @@
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/*1*/ export /*2*/ { /*3*/ A /*4*/, /*5*/ B /*6*/ as /*7*/ C /*8*/ } /*9*/ from /*10*/ "foo";
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/*1*/ export /*2*/ * /*3*/ from /*4*/ "foo"
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242
packages/babel-parser/test/fixtures/typescript/export/internal-comments/output.json
vendored
Normal file
242
packages/babel-parser/test/fixtures/typescript/export/internal-comments/output.json
vendored
Normal file
@ -0,0 +1,242 @@
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{
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"type": "File",
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"start":0,"end":137,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":43}},
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"program": {
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"type": "Program",
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"start":0,"end":137,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":43}},
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"sourceType": "module",
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"interpreter": null,
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"body": [
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{
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"type": "ExportNamedDeclaration",
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"start":6,"end":93,"loc":{"start":{"line":1,"column":6},"end":{"line":1,"column":93}},
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"leadingComments": [
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{
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"type": "CommentBlock",
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"value": "1",
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"start":0,"end":5,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":5}}
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}
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],
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"trailingComments": [
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{
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"type": "CommentBlock",
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"value": "1",
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"start":94,"end":99,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":5}}
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}
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],
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"exportKind": "value",
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"specifiers": [
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{
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"type": "ExportSpecifier",
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"start":27,"end":28,"loc":{"start":{"line":1,"column":27},"end":{"line":1,"column":28}},
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"leadingComments": [
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{
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"type": "CommentBlock",
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"value": "2",
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"start":13,"end":18,"loc":{"start":{"line":1,"column":13},"end":{"line":1,"column":18}}
|
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},
|
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{
|
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"type": "CommentBlock",
|
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"value": "3",
|
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"start":21,"end":26,"loc":{"start":{"line":1,"column":21},"end":{"line":1,"column":26}}
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}
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],
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"trailingComments": [
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{
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"type": "CommentBlock",
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"value": "4",
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"start":29,"end":34,"loc":{"start":{"line":1,"column":29},"end":{"line":1,"column":34}}
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},
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{
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"type": "CommentBlock",
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"value": "5",
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"start":36,"end":41,"loc":{"start":{"line":1,"column":36},"end":{"line":1,"column":41}}
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}
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],
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"local": {
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"type": "Identifier",
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"start":27,"end":28,"loc":{"start":{"line":1,"column":27},"end":{"line":1,"column":28},"identifierName":"A"},
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"name": "A"
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},
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"exported": {
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"type": "Identifier",
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"start":27,"end":28,"loc":{"start":{"line":1,"column":27},"end":{"line":1,"column":28},"identifierName":"A"},
|
||||
"name": "A"
|
||||
}
|
||||
},
|
||||
{
|
||||
"type": "ExportSpecifier",
|
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"start":42,"end":60,"loc":{"start":{"line":1,"column":42},"end":{"line":1,"column":60}},
|
||||
"trailingComments": [
|
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{
|
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"type": "CommentBlock",
|
||||
"value": "8",
|
||||
"start":61,"end":66,"loc":{"start":{"line":1,"column":61},"end":{"line":1,"column":66}}
|
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},
|
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{
|
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"type": "CommentBlock",
|
||||
"value": "9",
|
||||
"start":69,"end":74,"loc":{"start":{"line":1,"column":69},"end":{"line":1,"column":74}}
|
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},
|
||||
{
|
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"type": "CommentBlock",
|
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"value": "10",
|
||||
"start":80,"end":86,"loc":{"start":{"line":1,"column":80},"end":{"line":1,"column":86}}
|
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}
|
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],
|
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"local": {
|
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"type": "Identifier",
|
||||
"start":42,"end":43,"loc":{"start":{"line":1,"column":42},"end":{"line":1,"column":43},"identifierName":"B"},
|
||||
"trailingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "6",
|
||||
"start":44,"end":49,"loc":{"start":{"line":1,"column":44},"end":{"line":1,"column":49}}
|
||||
}
|
||||
],
|
||||
"name": "B"
|
||||
},
|
||||
"exported": {
|
||||
"type": "Identifier",
|
||||
"start":59,"end":60,"loc":{"start":{"line":1,"column":59},"end":{"line":1,"column":60},"identifierName":"C"},
|
||||
"leadingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "6",
|
||||
"start":44,"end":49,"loc":{"start":{"line":1,"column":44},"end":{"line":1,"column":49}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "7",
|
||||
"start":53,"end":58,"loc":{"start":{"line":1,"column":53},"end":{"line":1,"column":58}}
|
||||
}
|
||||
],
|
||||
"name": "C"
|
||||
}
|
||||
}
|
||||
],
|
||||
"source": {
|
||||
"type": "StringLiteral",
|
||||
"start":87,"end":92,"loc":{"start":{"line":1,"column":87},"end":{"line":1,"column":92}},
|
||||
"extra": {
|
||||
"rawValue": "foo",
|
||||
"raw": "\"foo\""
|
||||
},
|
||||
"value": "foo"
|
||||
},
|
||||
"declaration": null
|
||||
},
|
||||
{
|
||||
"type": "ExportAllDeclaration",
|
||||
"start":100,"end":137,"loc":{"start":{"line":2,"column":6},"end":{"line":2,"column":43}},
|
||||
"leadingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "1",
|
||||
"start":94,"end":99,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":5}}
|
||||
}
|
||||
],
|
||||
"exportKind": "value",
|
||||
"source": {
|
||||
"type": "StringLiteral",
|
||||
"start":132,"end":137,"loc":{"start":{"line":2,"column":38},"end":{"line":2,"column":43}},
|
||||
"leadingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "2",
|
||||
"start":107,"end":112,"loc":{"start":{"line":2,"column":13},"end":{"line":2,"column":18}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "3",
|
||||
"start":115,"end":120,"loc":{"start":{"line":2,"column":21},"end":{"line":2,"column":26}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "4",
|
||||
"start":126,"end":131,"loc":{"start":{"line":2,"column":32},"end":{"line":2,"column":37}}
|
||||
}
|
||||
],
|
||||
"extra": {
|
||||
"rawValue": "foo",
|
||||
"raw": "\"foo\""
|
||||
},
|
||||
"value": "foo"
|
||||
}
|
||||
}
|
||||
],
|
||||
"directives": []
|
||||
},
|
||||
"comments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "1",
|
||||
"start":0,"end":5,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":5}}
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|
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},
|
||||
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|
||||
"type": "CommentBlock",
|
||||
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|
||||
"start":21,"end":26,"loc":{"start":{"line":1,"column":21},"end":{"line":1,"column":26}}
|
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},
|
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{
|
||||
"type": "CommentBlock",
|
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"value": "4",
|
||||
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|
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},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "5",
|
||||
"start":36,"end":41,"loc":{"start":{"line":1,"column":36},"end":{"line":1,"column":41}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "6",
|
||||
"start":44,"end":49,"loc":{"start":{"line":1,"column":44},"end":{"line":1,"column":49}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "7",
|
||||
"start":53,"end":58,"loc":{"start":{"line":1,"column":53},"end":{"line":1,"column":58}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "8",
|
||||
"start":61,"end":66,"loc":{"start":{"line":1,"column":61},"end":{"line":1,"column":66}}
|
||||
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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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|
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|
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|
||||
},
|
||||
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|
||||
"type": "CommentBlock",
|
||||
"value": "1",
|
||||
"start":94,"end":99,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":5}}
|
||||
},
|
||||
{
|
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"type": "CommentBlock",
|
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"value": "2",
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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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|
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"type": "CommentBlock",
|
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|
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"start":126,"end":131,"loc":{"start":{"line":2,"column":32},"end":{"line":2,"column":37}}
|
||||
}
|
||||
]
|
||||
}
|
||||
2
packages/babel-parser/test/fixtures/typescript/import/internal-comments/input.ts
vendored
Normal file
2
packages/babel-parser/test/fixtures/typescript/import/internal-comments/input.ts
vendored
Normal file
@ -0,0 +1,2 @@
|
||||
/*1*/ import /*2*/ D /*3*/, /*4*/ { /*5*/ A /*6*/, /*7*/ B /*8*/ as /*9*/ C /*10*/ } /*11*/ from /*12*/ "foo";
|
||||
/*1*/ import /*2*/ * /*3*/ as /*4*/ foo /*5*/ from /*6*/ "foo";
|
||||
331
packages/babel-parser/test/fixtures/typescript/import/internal-comments/output.json
vendored
Normal file
331
packages/babel-parser/test/fixtures/typescript/import/internal-comments/output.json
vendored
Normal file
@ -0,0 +1,331 @@
|
||||
{
|
||||
"type": "File",
|
||||
"start":0,"end":174,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":63}},
|
||||
"program": {
|
||||
"type": "Program",
|
||||
"start":0,"end":174,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":63}},
|
||||
"sourceType": "module",
|
||||
"interpreter": null,
|
||||
"body": [
|
||||
{
|
||||
"type": "ImportDeclaration",
|
||||
"start":6,"end":110,"loc":{"start":{"line":1,"column":6},"end":{"line":1,"column":110}},
|
||||
"leadingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "1",
|
||||
"start":0,"end":5,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":5}}
|
||||
}
|
||||
],
|
||||
"trailingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "1",
|
||||
"start":111,"end":116,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":5}}
|
||||
}
|
||||
],
|
||||
"importKind": "value",
|
||||
"specifiers": [
|
||||
{
|
||||
"type": "ImportDefaultSpecifier",
|
||||
"start":19,"end":20,"loc":{"start":{"line":1,"column":19},"end":{"line":1,"column":20}},
|
||||
"leadingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "2",
|
||||
"start":13,"end":18,"loc":{"start":{"line":1,"column":13},"end":{"line":1,"column":18}}
|
||||
}
|
||||
],
|
||||
"trailingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "3",
|
||||
"start":21,"end":26,"loc":{"start":{"line":1,"column":21},"end":{"line":1,"column":26}}
|
||||
}
|
||||
],
|
||||
"local": {
|
||||
"type": "Identifier",
|
||||
"start":19,"end":20,"loc":{"start":{"line":1,"column":19},"end":{"line":1,"column":20},"identifierName":"D"},
|
||||
"name": "D"
|
||||
}
|
||||
},
|
||||
{
|
||||
"type": "ImportSpecifier",
|
||||
"start":42,"end":43,"loc":{"start":{"line":1,"column":42},"end":{"line":1,"column":43}},
|
||||
"leadingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "1",
|
||||
"start":0,"end":5,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":5}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "2",
|
||||
"start":13,"end":18,"loc":{"start":{"line":1,"column":13},"end":{"line":1,"column":18}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "3",
|
||||
"start":21,"end":26,"loc":{"start":{"line":1,"column":21},"end":{"line":1,"column":26}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "4",
|
||||
"start":28,"end":33,"loc":{"start":{"line":1,"column":28},"end":{"line":1,"column":33}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "5",
|
||||
"start":36,"end":41,"loc":{"start":{"line":1,"column":36},"end":{"line":1,"column":41}}
|
||||
}
|
||||
],
|
||||
"trailingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "6",
|
||||
"start":44,"end":49,"loc":{"start":{"line":1,"column":44},"end":{"line":1,"column":49}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "7",
|
||||
"start":51,"end":56,"loc":{"start":{"line":1,"column":51},"end":{"line":1,"column":56}}
|
||||
}
|
||||
],
|
||||
"imported": {
|
||||
"type": "Identifier",
|
||||
"start":42,"end":43,"loc":{"start":{"line":1,"column":42},"end":{"line":1,"column":43},"identifierName":"A"},
|
||||
"name": "A"
|
||||
},
|
||||
"local": {
|
||||
"type": "Identifier",
|
||||
"start":42,"end":43,"loc":{"start":{"line":1,"column":42},"end":{"line":1,"column":43},"identifierName":"A"},
|
||||
"name": "A"
|
||||
}
|
||||
},
|
||||
{
|
||||
"type": "ImportSpecifier",
|
||||
"start":57,"end":75,"loc":{"start":{"line":1,"column":57},"end":{"line":1,"column":75}},
|
||||
"trailingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "10",
|
||||
"start":76,"end":82,"loc":{"start":{"line":1,"column":76},"end":{"line":1,"column":82}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "11",
|
||||
"start":85,"end":91,"loc":{"start":{"line":1,"column":85},"end":{"line":1,"column":91}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "12",
|
||||
"start":97,"end":103,"loc":{"start":{"line":1,"column":97},"end":{"line":1,"column":103}}
|
||||
}
|
||||
],
|
||||
"imported": {
|
||||
"type": "Identifier",
|
||||
"start":57,"end":58,"loc":{"start":{"line":1,"column":57},"end":{"line":1,"column":58},"identifierName":"B"},
|
||||
"trailingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "8",
|
||||
"start":59,"end":64,"loc":{"start":{"line":1,"column":59},"end":{"line":1,"column":64}}
|
||||
}
|
||||
],
|
||||
"name": "B"
|
||||
},
|
||||
"local": {
|
||||
"type": "Identifier",
|
||||
"start":74,"end":75,"loc":{"start":{"line":1,"column":74},"end":{"line":1,"column":75},"identifierName":"C"},
|
||||
"leadingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "8",
|
||||
"start":59,"end":64,"loc":{"start":{"line":1,"column":59},"end":{"line":1,"column":64}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "9",
|
||||
"start":68,"end":73,"loc":{"start":{"line":1,"column":68},"end":{"line":1,"column":73}}
|
||||
}
|
||||
],
|
||||
"name": "C"
|
||||
}
|
||||
}
|
||||
],
|
||||
"source": {
|
||||
"type": "StringLiteral",
|
||||
"start":104,"end":109,"loc":{"start":{"line":1,"column":104},"end":{"line":1,"column":109}},
|
||||
"extra": {
|
||||
"rawValue": "foo",
|
||||
"raw": "\"foo\""
|
||||
},
|
||||
"value": "foo"
|
||||
}
|
||||
},
|
||||
{
|
||||
"type": "ImportDeclaration",
|
||||
"start":117,"end":174,"loc":{"start":{"line":2,"column":6},"end":{"line":2,"column":63}},
|
||||
"leadingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "1",
|
||||
"start":111,"end":116,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":5}}
|
||||
}
|
||||
],
|
||||
"importKind": "value",
|
||||
"specifiers": [
|
||||
{
|
||||
"type": "ImportNamespaceSpecifier",
|
||||
"start":130,"end":150,"loc":{"start":{"line":2,"column":19},"end":{"line":2,"column":39}},
|
||||
"leadingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "2",
|
||||
"start":124,"end":129,"loc":{"start":{"line":2,"column":13},"end":{"line":2,"column":18}}
|
||||
}
|
||||
],
|
||||
"trailingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "5",
|
||||
"start":151,"end":156,"loc":{"start":{"line":2,"column":40},"end":{"line":2,"column":45}}
|
||||
}
|
||||
],
|
||||
"local": {
|
||||
"type": "Identifier",
|
||||
"start":147,"end":150,"loc":{"start":{"line":2,"column":36},"end":{"line":2,"column":39},"identifierName":"foo"},
|
||||
"leadingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "3",
|
||||
"start":132,"end":137,"loc":{"start":{"line":2,"column":21},"end":{"line":2,"column":26}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "4",
|
||||
"start":141,"end":146,"loc":{"start":{"line":2,"column":30},"end":{"line":2,"column":35}}
|
||||
}
|
||||
],
|
||||
"name": "foo"
|
||||
}
|
||||
}
|
||||
],
|
||||
"source": {
|
||||
"type": "StringLiteral",
|
||||
"start":168,"end":173,"loc":{"start":{"line":2,"column":57},"end":{"line":2,"column":62}},
|
||||
"leadingComments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "5",
|
||||
"start":151,"end":156,"loc":{"start":{"line":2,"column":40},"end":{"line":2,"column":45}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "6",
|
||||
"start":162,"end":167,"loc":{"start":{"line":2,"column":51},"end":{"line":2,"column":56}}
|
||||
}
|
||||
],
|
||||
"extra": {
|
||||
"rawValue": "foo",
|
||||
"raw": "\"foo\""
|
||||
},
|
||||
"value": "foo"
|
||||
}
|
||||
}
|
||||
],
|
||||
"directives": []
|
||||
},
|
||||
"comments": [
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "1",
|
||||
"start":0,"end":5,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":5}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "2",
|
||||
"start":13,"end":18,"loc":{"start":{"line":1,"column":13},"end":{"line":1,"column":18}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "3",
|
||||
"start":21,"end":26,"loc":{"start":{"line":1,"column":21},"end":{"line":1,"column":26}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "4",
|
||||
"start":28,"end":33,"loc":{"start":{"line":1,"column":28},"end":{"line":1,"column":33}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "5",
|
||||
"start":36,"end":41,"loc":{"start":{"line":1,"column":36},"end":{"line":1,"column":41}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "6",
|
||||
"start":44,"end":49,"loc":{"start":{"line":1,"column":44},"end":{"line":1,"column":49}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "7",
|
||||
"start":51,"end":56,"loc":{"start":{"line":1,"column":51},"end":{"line":1,"column":56}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "8",
|
||||
"start":59,"end":64,"loc":{"start":{"line":1,"column":59},"end":{"line":1,"column":64}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "9",
|
||||
"start":68,"end":73,"loc":{"start":{"line":1,"column":68},"end":{"line":1,"column":73}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "10",
|
||||
"start":76,"end":82,"loc":{"start":{"line":1,"column":76},"end":{"line":1,"column":82}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "11",
|
||||
"start":85,"end":91,"loc":{"start":{"line":1,"column":85},"end":{"line":1,"column":91}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "12",
|
||||
"start":97,"end":103,"loc":{"start":{"line":1,"column":97},"end":{"line":1,"column":103}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "1",
|
||||
"start":111,"end":116,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":5}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "2",
|
||||
"start":124,"end":129,"loc":{"start":{"line":2,"column":13},"end":{"line":2,"column":18}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "3",
|
||||
"start":132,"end":137,"loc":{"start":{"line":2,"column":21},"end":{"line":2,"column":26}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "4",
|
||||
"start":141,"end":146,"loc":{"start":{"line":2,"column":30},"end":{"line":2,"column":35}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "5",
|
||||
"start":151,"end":156,"loc":{"start":{"line":2,"column":40},"end":{"line":2,"column":45}}
|
||||
},
|
||||
{
|
||||
"type": "CommentBlock",
|
||||
"value": "6",
|
||||
"start":162,"end":167,"loc":{"start":{"line":2,"column":51},"end":{"line":2,"column":56}}
|
||||
}
|
||||
]
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user