1 | import type {
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2 | CodeKeywordDefinition,
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3 | ErrorObject,
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4 | KeywordErrorDefinition,
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5 | AnySchema,
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6 | } from "../../types"
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7 | import type {KeywordCxt} from "../../compile/validate"
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8 | import {_, Name} from "../../compile/codegen"
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9 | import {alwaysValidSchema} from "../../compile/util"
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10 | import {SchemaCxt} from "../../compile"
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11 |
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12 | export type OneOfError = ErrorObject<
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13 | "oneOf",
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14 | {passingSchemas: [number, number] | null},
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15 | AnySchema[]
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16 | >
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17 |
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18 | const error: KeywordErrorDefinition = {
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19 | message: "must match exactly one schema in oneOf",
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20 | params: ({params}) => _`{passingSchemas: ${params.passing}}`,
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21 | }
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22 |
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23 | const def: CodeKeywordDefinition = {
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24 | keyword: "oneOf",
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25 | schemaType: "array",
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26 | trackErrors: true,
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27 | error,
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28 | code(cxt: KeywordCxt) {
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29 | const {gen, schema, parentSchema, it} = cxt
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30 |
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31 | if (!Array.isArray(schema)) throw new Error("ajv implementation error")
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32 | if (it.opts.discriminator && parentSchema.discriminator) return
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33 | const schArr: AnySchema[] = schema
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34 | const valid = gen.let("valid", false)
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35 | const passing = gen.let("passing", null)
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36 | const schValid = gen.name("_valid")
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37 | cxt.setParams({passing})
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38 |
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39 |
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40 | gen.block(validateOneOf)
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41 |
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42 | cxt.result(
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43 | valid,
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44 | () => cxt.reset(),
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45 | () => cxt.error(true)
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46 | )
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47 |
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48 | function validateOneOf(): void {
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49 | schArr.forEach((sch: AnySchema, i: number) => {
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50 | let schCxt: SchemaCxt | undefined
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51 | if (alwaysValidSchema(it, sch)) {
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52 | gen.var(schValid, true)
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53 | } else {
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54 | schCxt = cxt.subschema(
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55 | {
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56 | keyword: "oneOf",
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57 | schemaProp: i,
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58 | compositeRule: true,
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59 | },
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60 | schValid
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61 | )
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62 | }
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63 |
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64 | if (i > 0) {
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65 | gen
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66 | .if(_`${schValid} && ${valid}`)
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67 | .assign(valid, false)
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68 | .assign(passing, _`[${passing}, ${i}]`)
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69 | .else()
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70 | }
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71 |
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72 | gen.if(schValid, () => {
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73 | gen.assign(valid, true)
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74 | gen.assign(passing, i)
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75 | if (schCxt) cxt.mergeEvaluated(schCxt, Name)
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76 | })
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77 | })
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78 | }
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79 | },
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80 | }
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81 |
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82 | export default def
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