39 lines
1.6 KiB
JavaScript
39 lines
1.6 KiB
JavaScript
import { getInst, getType } from "../primitives/dynamic.js";
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import { SymbolBool, SymbolBottom, SymbolByte, SymbolChar, SymbolDouble, SymbolDynamic, SymbolInt, SymbolUUID, SymbolType, SymbolUnit } from "../primitives/primitive_types.js";
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import { symbolDict, symbolFunction, symbolList, symbolProduct, symbolSet, symbolSum } from "../structures/type_constructors.js";
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import { compareBools, compareNumbers, compareStrings, compareSymbols, compareUnits } from "./primitives.js";
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import { compareDicts, compareFunctions, compareLists, compareProducts, compareSets, compareSums } from "./structures.js";
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import { compareTypes } from "./type.js";
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export const compareDynamic = x => y =>
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compareTypes(getType(x))(getType(y))
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|| makeCompareFn(getType(x))(getInst(x))(getInst(y));
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const typeSymbolToCmp = new Map([
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[SymbolInt , compareNumbers],
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[SymbolBool , compareBools],
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[SymbolDouble , compareNumbers],
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[SymbolByte , compareNumbers],
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[SymbolChar , compareStrings],
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[SymbolUnit , compareUnits],
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[SymbolBottom , _ => _ => { throw new Error("Bottom!"); }],
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[SymbolUUID , compareSymbols],
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// [SymbolGenericType, ?] TODO
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[SymbolType , compareTypes],
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[SymbolDynamic, compareDynamic],
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// these functions take extra comparison callbacks:
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[symbolFunction, compareFunctions],
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[symbolSum , compareSums],
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[symbolProduct , compareProducts],
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[symbolList , compareLists],
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[symbolSet , compareSets],
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[symbolDict , compareDicts],
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]);
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export const makeCompareFn = type => {
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return type.params.reduce(
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(acc, cur) => acc(makeCompareFn(cur(type))),
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typeSymbolToCmp.get(type.symbol)
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);
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};
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