mirror of https://github.com/jkjoy/sunpeiwen.git
45 lines
1.2 KiB
TypeScript
45 lines
1.2 KiB
TypeScript
import type {CodeKeywordDefinition} from "../../types"
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import type KeywordCxt from "../../compile/context"
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import {_, getProperty, Name} from "../../compile/codegen"
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import {checkMetadata} from "./metadata"
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import {checkNullableObject} from "./nullable"
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const def: CodeKeywordDefinition = {
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keyword: "discriminator",
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schemaType: "string",
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implements: ["mapping"],
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code(cxt: KeywordCxt) {
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checkMetadata(cxt)
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const {gen, data, schema, parentSchema} = cxt
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const [valid, cond] = checkNullableObject(cxt, data)
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gen.if(cond, () => {
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const tag = gen.const("tag", _`${data}${getProperty(schema)}`)
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gen.if(_`typeof ${tag} == "string"`, () => {
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gen.if(false)
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for (const tagValue in parentSchema.mapping) {
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gen.elseIf(_`${tag} === ${tagValue}`)
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gen.assign(valid, applyTagSchema(tagValue))
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}
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gen.endIf()
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})
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})
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cxt.pass(valid)
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function applyTagSchema(schemaProp: string): Name {
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const _valid = gen.name("valid")
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cxt.subschema(
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{
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keyword: "mapping",
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schemaProp,
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jtdDiscriminator: schema,
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},
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_valid
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)
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return _valid
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}
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},
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}
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export default def
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