dope2/lib/versioning/compare.js

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1.7 KiB
JavaScript

import { compareDynamic } from "../compare/dynamic.js";
import { compareSymbols, compareInts } from "../compare/primitives.js";
import { makeTypeParser } from "../parser/type_parser.js";
import { newDynamic } from "../primitives/dynamic.js";
import { makeEnumCompareFn } from "../structures/enum.js";
import { makeStructCompareFn } from "../structures/struct.js";
import { Slot, Transformation, Value, Write } from "./value_slot.js";
// comparison functions are mutually recursive...
export const compareSlot = makeEnumCompareFn([
{ l: "new", r: () => compareSymbols },
{ l: "write", r: () => compareWrite },
]);
export const compareWrite = makeStructCompareFn([
{ l: "slot", r: () => compareSlot },
{ l: "value", r: () => compareValue },
{ l: "depth", r: () => compareInts },
]);
export const compareTransformation = makeStructCompareFn([
{ l: "input", r: () => compareValue },
{ l: "fn", r: () => compareValue },
{ l: "output", r: () => compareDynamic },
]);
export const compareValue = makeEnumCompareFn([
{ l: "literal", r: () => compareDynamic },
{ l: "read", r: () => compareWrite },
{ l: "transform", r: () => compareTransformation },
]);
const mkType = makeTypeParser({
extraPrimitives: [
["Value", Value],
["Slot" , Slot ],
["Write", Write],
["Transformation", Transformation],
],
});
export const ModuleVersioningCompare = [
// comparison
["compareSlot" , newDynamic(compareSlot )(mkType("Slot -> Slot -> Ordering"))],
["compareValue", newDynamic(compareValue)(mkType("Value -> Value -> Ordering"))],
["compareWrite", newDynamic(compareWrite)(mkType("Write -> Write -> Ordering"))],
["compareTransformation", newDynamic(compareTransformation)(mkType("Transformation -> Transformation -> Ordering"))],
];