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- "use strict";
- Object.defineProperty(exports, "__esModule", { value: true });
- const codegen_1 = require("../../compile/codegen");
- const types_1 = require("../discriminator/types");
- const compile_1 = require("../../compile");
- const ref_error_1 = require("../../compile/ref_error");
- const util_1 = require("../../compile/util");
- const error = {
- message: ({ params: { discrError, tagName } }) => discrError === types_1.DiscrError.Tag
- ? `tag "${tagName}" must be string`
- : `value of tag "${tagName}" must be in oneOf`,
- params: ({ params: { discrError, tag, tagName } }) => (0, codegen_1._) `{error: ${discrError}, tag: ${tagName}, tagValue: ${tag}}`,
- };
- const def = {
- keyword: "discriminator",
- type: "object",
- schemaType: "object",
- error,
- code(cxt) {
- const { gen, data, schema, parentSchema, it } = cxt;
- const { oneOf } = parentSchema;
- if (!it.opts.discriminator) {
- throw new Error("discriminator: requires discriminator option");
- }
- const tagName = schema.propertyName;
- if (typeof tagName != "string")
- throw new Error("discriminator: requires propertyName");
- if (schema.mapping)
- throw new Error("discriminator: mapping is not supported");
- if (!oneOf)
- throw new Error("discriminator: requires oneOf keyword");
- const valid = gen.let("valid", false);
- const tag = gen.const("tag", (0, codegen_1._) `${data}${(0, codegen_1.getProperty)(tagName)}`);
- gen.if((0, codegen_1._) `typeof ${tag} == "string"`, () => validateMapping(), () => cxt.error(false, { discrError: types_1.DiscrError.Tag, tag, tagName }));
- cxt.ok(valid);
- function validateMapping() {
- const mapping = getMapping();
- gen.if(false);
- for (const tagValue in mapping) {
- gen.elseIf((0, codegen_1._) `${tag} === ${tagValue}`);
- gen.assign(valid, applyTagSchema(mapping[tagValue]));
- }
- gen.else();
- cxt.error(false, { discrError: types_1.DiscrError.Mapping, tag, tagName });
- gen.endIf();
- }
- function applyTagSchema(schemaProp) {
- const _valid = gen.name("valid");
- const schCxt = cxt.subschema({ keyword: "oneOf", schemaProp }, _valid);
- cxt.mergeEvaluated(schCxt, codegen_1.Name);
- return _valid;
- }
- function getMapping() {
- var _a;
- const oneOfMapping = {};
- const topRequired = hasRequired(parentSchema);
- let tagRequired = true;
- for (let i = 0; i < oneOf.length; i++) {
- let sch = oneOf[i];
- if ((sch === null || sch === void 0 ? void 0 : sch.$ref) && !(0, util_1.schemaHasRulesButRef)(sch, it.self.RULES)) {
- const ref = sch.$ref;
- sch = compile_1.resolveRef.call(it.self, it.schemaEnv.root, it.baseId, ref);
- if (sch instanceof compile_1.SchemaEnv)
- sch = sch.schema;
- if (sch === undefined)
- throw new ref_error_1.default(it.opts.uriResolver, it.baseId, ref);
- }
- const propSch = (_a = sch === null || sch === void 0 ? void 0 : sch.properties) === null || _a === void 0 ? void 0 : _a[tagName];
- if (typeof propSch != "object") {
- throw new Error(`discriminator: oneOf subschemas (or referenced schemas) must have "properties/${tagName}"`);
- }
- tagRequired = tagRequired && (topRequired || hasRequired(sch));
- addMappings(propSch, i);
- }
- if (!tagRequired)
- throw new Error(`discriminator: "${tagName}" must be required`);
- return oneOfMapping;
- function hasRequired({ required }) {
- return Array.isArray(required) && required.includes(tagName);
- }
- function addMappings(sch, i) {
- if (sch.const) {
- addMapping(sch.const, i);
- }
- else if (sch.enum) {
- for (const tagValue of sch.enum) {
- addMapping(tagValue, i);
- }
- }
- else {
- throw new Error(`discriminator: "properties/${tagName}" must have "const" or "enum"`);
- }
- }
- function addMapping(tagValue, i) {
- if (typeof tagValue != "string" || tagValue in oneOfMapping) {
- throw new Error(`discriminator: "${tagName}" values must be unique strings`);
- }
- oneOfMapping[tagValue] = i;
- }
- }
- },
- };
- exports.default = def;
- //# sourceMappingURL=index.js.map
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