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83 lines
2.1 KiB
83 lines
2.1 KiB
import type {
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CodeKeywordDefinition,
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ErrorObject,
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KeywordErrorDefinition,
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AnySchema,
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} from "../../types"
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import type {KeywordCxt} from "../../compile/validate"
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import {_, Name} from "../../compile/codegen"
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import {alwaysValidSchema} from "../../compile/util"
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import {SchemaCxt} from "../../compile"
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export type OneOfError = ErrorObject<
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"oneOf",
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{passingSchemas: [number, number] | null},
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AnySchema[]
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>
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const error: KeywordErrorDefinition = {
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message: "must match exactly one schema in oneOf",
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params: ({params}) => _`{passingSchemas: ${params.passing}}`,
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}
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const def: CodeKeywordDefinition = {
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keyword: "oneOf",
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schemaType: "array",
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trackErrors: true,
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error,
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code(cxt: KeywordCxt) {
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const {gen, schema, parentSchema, it} = cxt
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/* istanbul ignore if */
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if (!Array.isArray(schema)) throw new Error("ajv implementation error")
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if (it.opts.discriminator && parentSchema.discriminator) return
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const schArr: AnySchema[] = schema
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const valid = gen.let("valid", false)
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const passing = gen.let("passing", null)
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const schValid = gen.name("_valid")
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cxt.setParams({passing})
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// TODO possibly fail straight away (with warning or exception) if there are two empty always valid schemas
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gen.block(validateOneOf)
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cxt.result(
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valid,
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() => cxt.reset(),
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() => cxt.error(true)
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)
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function validateOneOf(): void {
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schArr.forEach((sch: AnySchema, i: number) => {
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let schCxt: SchemaCxt | undefined
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if (alwaysValidSchema(it, sch)) {
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gen.var(schValid, true)
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} else {
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schCxt = cxt.subschema(
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{
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keyword: "oneOf",
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schemaProp: i,
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compositeRule: true,
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},
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schValid
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)
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}
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if (i > 0) {
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gen
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.if(_`${schValid} && ${valid}`)
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.assign(valid, false)
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.assign(passing, _`[${passing}, ${i}]`)
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.else()
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}
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gen.if(schValid, () => {
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gen.assign(valid, true)
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gen.assign(passing, i)
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if (schCxt) cxt.mergeEvaluated(schCxt, Name)
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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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