Function validateUnion

lib/vocabularies/code.ts:135–168

(cxt: KeywordCxt)

}

export function validateUnion(cxt: KeywordCxt): void {
  const {gen, schema, keyword, it} = cxt
  /* istanbul ignore if */
  if (!Array.isArray(schema)) throw new Error("ajv implementation error")
  const alwaysValid = schema.some((sch: AnySchema) => alwaysValidSchema(it, sch))
  if (alwaysValid && !it.opts.unevaluated) return

  const valid = gen.let("valid", false)
  const schValid = gen.name("_valid")

  gen.block(() =>
    schema.forEach((_sch: AnySchema, i: number) => {
      const schCxt = cxt.subschema(
        {
          keyword,
          schemaProp: i,
          compositeRule: true,
        },
        schValid
      )
      gen.assign(valid, _`${valid} || ${schValid}`)
      const merged = cxt.mergeValidEvaluated(schCxt, schValid)
      // can short-circuit if `unevaluatedProperties/Items` not supported (opts.unevaluated !== true)
      // or if all properties and items were evaluated (it.props === true && it.items === true)
      if (!merged) gen.if(not(valid))
    })
  )

  cxt.result(
    valid,
    () => cxt.reset(),
    () => cxt.error(true)
  )
}