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80 lines
2.6 KiB
80 lines
2.6 KiB
3 years ago
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import type {CodeKeywordDefinition, ErrorObject, KeywordErrorDefinition} from "../../types"
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import type {KeywordCxt} from "../../compile/validate"
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import {checkDataTypes, getSchemaTypes, DataType} from "../../compile/validate/dataType"
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import {_, str, Name} from "../../compile/codegen"
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import {useFunc} from "../../compile/util"
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import equal from "../../runtime/equal"
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export type UniqueItemsError = ErrorObject<
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"uniqueItems",
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{i: number; j: number},
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boolean | {$data: string}
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>
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const error: KeywordErrorDefinition = {
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message: ({params: {i, j}}) =>
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str`must NOT have duplicate items (items ## ${j} and ${i} are identical)`,
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params: ({params: {i, j}}) => _`{i: ${i}, j: ${j}}`,
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}
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const def: CodeKeywordDefinition = {
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keyword: "uniqueItems",
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type: "array",
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schemaType: "boolean",
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$data: true,
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error,
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code(cxt: KeywordCxt) {
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const {gen, data, $data, schema, parentSchema, schemaCode, it} = cxt
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if (!$data && !schema) return
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const valid = gen.let("valid")
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const itemTypes = parentSchema.items ? getSchemaTypes(parentSchema.items) : []
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cxt.block$data(valid, validateUniqueItems, _`${schemaCode} === false`)
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cxt.ok(valid)
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function validateUniqueItems(): void {
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const i = gen.let("i", _`${data}.length`)
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const j = gen.let("j")
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cxt.setParams({i, j})
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gen.assign(valid, true)
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gen.if(_`${i} > 1`, () => (canOptimize() ? loopN : loopN2)(i, j))
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}
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function canOptimize(): boolean {
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return itemTypes.length > 0 && !itemTypes.some((t) => t === "object" || t === "array")
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}
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function loopN(i: Name, j: Name): void {
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const item = gen.name("item")
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const wrongType = checkDataTypes(itemTypes, item, it.opts.strictNumbers, DataType.Wrong)
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const indices = gen.const("indices", _`{}`)
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gen.for(_`;${i}--;`, () => {
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gen.let(item, _`${data}[${i}]`)
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gen.if(wrongType, _`continue`)
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if (itemTypes.length > 1) gen.if(_`typeof ${item} == "string"`, _`${item} += "_"`)
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gen
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.if(_`typeof ${indices}[${item}] == "number"`, () => {
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gen.assign(j, _`${indices}[${item}]`)
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cxt.error()
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gen.assign(valid, false).break()
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})
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.code(_`${indices}[${item}] = ${i}`)
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})
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}
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function loopN2(i: Name, j: Name): void {
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const eql = useFunc(gen, equal)
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const outer = gen.name("outer")
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gen.label(outer).for(_`;${i}--;`, () =>
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gen.for(_`${j} = ${i}; ${j}--;`, () =>
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gen.if(_`${eql}(${data}[${i}], ${data}[${j}])`, () => {
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cxt.error()
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gen.assign(valid, false).break(outer)
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})
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)
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)
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}
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},
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}
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export default def
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