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Update Whitespace._findToken

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This commit is contained in:
Jason 2016-01-20 16:37:46 +08:00
parent d11a2e3d48
commit e9fae4ca54
1 changed files with 4 additions and 3 deletions
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7
packages/babel-generator/src/whitespace.js
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@ -18,7 +18,7 @@ export default class Whitespace {
let tokens = this.tokens;
let index = this._findToken(token => token.start - node.start, 0, tokens.length);
if (typeof index === "number") {
if (index >= 0) {
while (index && node.start === tokens[index - 1].start) --index;
startToken = tokens[index - 1];
endToken = tokens[index];
@ -37,7 +37,7 @@ export default class Whitespace {
let tokens = this.tokens;
let index = this._findToken(token => token.end - node.end, 0, tokens.length);
if (typeof index === "number") {
if (index >= 0) {
while (index && node.end === tokens[index - 1].end) --index;
startToken = tokens[index];
endToken = tokens[index + 1];
@ -82,7 +82,7 @@ export default class Whitespace {
* Find a token between start and end.
*/
_findToken(test: Function, start: number, end: number): ?number {
_findToken(test: Function, start: number, end: number): number {
const middle = (start + end) >>> 1;
const match: number = test(this.tokens[middle]);
if (match < 0 && end > middle) {
@ -92,5 +92,6 @@ export default class Whitespace {
} else if (match === 0) {
return middle;
}
return -1;
}
}