import type {CodeKeywordDefinition, KeywordCxt, JSONSchemaType, Name} from "ajv"
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import {_} from "ajv/dist/compile/codegen"
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import {usePattern} from "./_util"
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interface RegexpSchema {
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pattern: string
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flags?: string
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}
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const regexpMetaSchema: JSONSchemaType<RegexpSchema> = {
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type: "object",
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properties: {
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pattern: {type: "string"},
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flags: {type: "string", nullable: true},
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},
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required: ["pattern"],
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additionalProperties: false,
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}
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const metaRegexp = /^\/(.*)\/([gimuy]*)$/
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export default function getDef(): CodeKeywordDefinition {
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return {
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keyword: "regexp",
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type: "string",
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schemaType: ["string", "object"],
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code(cxt: KeywordCxt) {
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const {data, schema} = cxt
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const regx = getRegExp(schema)
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cxt.pass(_`${regx}.test(${data})`)
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function getRegExp(sch: string | RegexpSchema): Name {
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if (typeof sch == "object") return usePattern(cxt, sch.pattern, sch.flags)
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const rx = metaRegexp.exec(sch)
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if (rx) return usePattern(cxt, rx[1], rx[2])
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throw new Error("cannot parse string into RegExp")
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}
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},
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metaSchema: {
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anyOf: [{type: "string"}, regexpMetaSchema],
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},
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}
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}
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module.exports = getDef
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