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create 'Ordering' type

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This commit is contained in:
Joeri Exelmans 2025-05-09 16:35:26 +02:00
parent 77dfc8b182
commit b0023afe8c
15 changed files with 158 additions and 117 deletions
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8
lib/compare/structures.js
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@ -1,6 +1,6 @@
// Total ordering of composed types
import { compareNumbers, compareStrings } from "./primitives.js"
import { compareDoubles, compareStrings } from "./primitives.js"
import { get, length as lengthLs } from "../structures/list.js";
import { read as readSet, length as lengthSet, first as firstSet } from "../structures/set.js";
import { read as readDict, length as lengthDict, first as firstDict } from "../structures/dict.js";
@ -13,7 +13,7 @@ export const compareFunctions = _compareInput => _compareOutput => x => y => {
}
export const compareLists = compareElems => x => y => {
return compareNumbers(lengthLs(x))(lengthLs(y))
return compareDoubles(lengthLs(x))(lengthLs(y))
|| (() => {
for (let i=0; i<lengthLs(x); i++) {
const elemCmp = compareElems(get(x)(i))(get(y)(i));
@ -50,7 +50,7 @@ export const compareSums = compareLeft => compareRight => x => y => {
};
export const compareSets = compareElems => x => y => {
return compareNumbers(lengthSet(x))(lengthSet(y))
return compareDoubles(lengthSet(x))(lengthSet(y))
|| (() => {
// sets have same size -> iterate over both sets and compare their elements pairwise
// because of the underlying red-black tree, iteration happens in ordered fashion
@ -71,7 +71,7 @@ export const compareSets = compareElems => x => y => {
};
export const compareDicts = compareKeys => compareValues => x => y => {
return compareNumbers(lengthDict(x))(lengthDict(y))
return compareDoubles(lengthDict(x))(lengthDict(y))
|| (() => {
// dicts have same size -> iterate over both and compare their entries pairwise
// because of the underlying red-black tree, iteration happens in ordered fashion