28 lines
642 B
JavaScript
28 lines
642 B
JavaScript
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import getIdentifierNames from "./util/getIdentifierNames";
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export default class NameManager {
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__init() {this.usedNames = new Set()}
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constructor(code, tokens) {;NameManager.prototype.__init.call(this);
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this.usedNames = new Set(getIdentifierNames(code, tokens));
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}
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claimFreeName(name) {
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const newName = this.findFreeName(name);
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this.usedNames.add(newName);
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return newName;
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}
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findFreeName(name) {
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if (!this.usedNames.has(name)) {
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return name;
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}
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let suffixNum = 2;
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while (this.usedNames.has(name + String(suffixNum))) {
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suffixNum++;
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}
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return name + String(suffixNum);
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}
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}
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