53 lines
2.1 KiB
TypeScript
53 lines
2.1 KiB
TypeScript
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import { func, object, symbol } from "./primordials.ts";
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import { unwrapThis, valueKey } from "./utils.ts";
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export const Symbol = (() => {
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class Symbol {
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[valueKey]!: symbol;
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get description() {
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return symbol.getSymbolDescription(unwrapThis(this, "symbol", Symbol, "Symbol.prototype.description"));
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}
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public toString() {
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return "Symbol(" + unwrapThis(this, "symbol", Symbol, "Symbol.prototype.toString").description + ")";
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}
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public valueOf() {
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return unwrapThis(this, "symbol", Symbol, "Symbol.prototype.valueOf");
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}
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public constructor(name = "") {
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return symbol.makeSymbol(name + "") as any;
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}
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public static for(name: string) {
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return symbol.getSymbol(name + "");
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}
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public static readonly asyncIterator: unique symbol;
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public static readonly iterator: unique symbol;
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public static readonly match: unique symbol;
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public static readonly matchAll: unique symbol;
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public static readonly replace: unique symbol;
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public static readonly search: unique symbol;
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public static readonly split: unique symbol;
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public static readonly toStringTag: unique symbol;
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};
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func.setCallable(Symbol, true);
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func.setConstructable(Symbol, false);
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object.defineField(Symbol, "asyncIterator", false, false, false, symbol.getSymbol("Symbol.asyncIterator"));
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object.defineField(Symbol, "iterator", false, false, false, symbol.getSymbol("Symbol.iterator"));
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object.defineField(Symbol, "match", false, false, false, symbol.getSymbol("Symbol.match"));
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object.defineField(Symbol, "matchAll", false, false, false, symbol.getSymbol("Symbol.matchAll"));
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object.defineField(Symbol, "replace", false, false, false, symbol.getSymbol("Symbol.replace"));
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object.defineField(Symbol, "search", false, false, false, symbol.getSymbol("Symbol.search"));
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object.defineField(Symbol, "split", false, false, false, symbol.getSymbol("Symbol.split"));
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object.defineField(Symbol, "toStringTag", false, false, false, symbol.getSymbol("Symbol.toStringTag"));
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return Symbol as any as typeof Symbol & ((name?: string) => symbol);
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})();
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export type Symbol = InstanceType<typeof Symbol>;
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