46 lines
1.6 KiB
TypeScript
46 lines
1.6 KiB
TypeScript
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import type {CodeKeywordDefinition, KeywordErrorDefinition, ErrorObject} from "../../types"
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import type {KeywordCxt} from "../../compile/validate"
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import {_, or, and, Code} from "../../compile/codegen"
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import {checkMetadata} from "./metadata"
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import {checkNullable} from "./nullable"
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export type JTDEnumError = ErrorObject<"enum", {allowedValues: string[]}, string[]>
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const error: KeywordErrorDefinition = {
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message: "must be equal to one of the allowed values",
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params: ({schemaCode}) => _`{allowedValues: ${schemaCode}}`,
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}
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const def: CodeKeywordDefinition = {
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keyword: "enum",
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schemaType: "array",
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error,
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code(cxt: KeywordCxt) {
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checkMetadata(cxt)
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const {gen, data, schema, schemaValue, parentSchema, it} = cxt
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if (schema.length === 0) throw new Error("enum must have non-empty array")
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if (schema.length !== new Set(schema).size) throw new Error("enum items must be unique")
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let valid: Code
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const isString = _`typeof ${data} == "string"`
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if (schema.length >= it.opts.loopEnum) {
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let cond: Code
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;[valid, cond] = checkNullable(cxt, isString)
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gen.if(cond, loopEnum)
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} else {
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/* istanbul ignore if */
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if (!Array.isArray(schema)) throw new Error("ajv implementation error")
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valid = and(isString, or(...schema.map((value: string) => _`${data} === ${value}`)))
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if (parentSchema.nullable) valid = or(_`${data} === null`, valid)
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}
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cxt.pass(valid)
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function loopEnum(): void {
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gen.forOf("v", schemaValue as Code, (v) =>
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gen.if(_`${valid} = ${data} === ${v}`, () => gen.break())
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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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