index.js 4.5 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100
  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", { value: true });
  3. const codegen_1 = require("../../compile/codegen");
  4. const types_1 = require("../discriminator/types");
  5. const compile_1 = require("../../compile");
  6. const util_1 = require("../../compile/util");
  7. const error = {
  8. message: ({ params: { discrError, tagName } }) => discrError === types_1.DiscrError.Tag
  9. ? `tag "${tagName}" must be string`
  10. : `value of tag "${tagName}" must be in oneOf`,
  11. params: ({ params: { discrError, tag, tagName } }) => (0, codegen_1._) `{error: ${discrError}, tag: ${tagName}, tagValue: ${tag}}`,
  12. };
  13. const def = {
  14. keyword: "discriminator",
  15. type: "object",
  16. schemaType: "object",
  17. error,
  18. code(cxt) {
  19. const { gen, data, schema, parentSchema, it } = cxt;
  20. const { oneOf } = parentSchema;
  21. if (!it.opts.discriminator) {
  22. throw new Error("discriminator: requires discriminator option");
  23. }
  24. const tagName = schema.propertyName;
  25. if (typeof tagName != "string")
  26. throw new Error("discriminator: requires propertyName");
  27. if (schema.mapping)
  28. throw new Error("discriminator: mapping is not supported");
  29. if (!oneOf)
  30. throw new Error("discriminator: requires oneOf keyword");
  31. const valid = gen.let("valid", false);
  32. const tag = gen.const("tag", (0, codegen_1._) `${data}${(0, codegen_1.getProperty)(tagName)}`);
  33. gen.if((0, codegen_1._) `typeof ${tag} == "string"`, () => validateMapping(), () => cxt.error(false, { discrError: types_1.DiscrError.Tag, tag, tagName }));
  34. cxt.ok(valid);
  35. function validateMapping() {
  36. const mapping = getMapping();
  37. gen.if(false);
  38. for (const tagValue in mapping) {
  39. gen.elseIf((0, codegen_1._) `${tag} === ${tagValue}`);
  40. gen.assign(valid, applyTagSchema(mapping[tagValue]));
  41. }
  42. gen.else();
  43. cxt.error(false, { discrError: types_1.DiscrError.Mapping, tag, tagName });
  44. gen.endIf();
  45. }
  46. function applyTagSchema(schemaProp) {
  47. const _valid = gen.name("valid");
  48. const schCxt = cxt.subschema({ keyword: "oneOf", schemaProp }, _valid);
  49. cxt.mergeEvaluated(schCxt, codegen_1.Name);
  50. return _valid;
  51. }
  52. function getMapping() {
  53. var _a;
  54. const oneOfMapping = {};
  55. const topRequired = hasRequired(parentSchema);
  56. let tagRequired = true;
  57. for (let i = 0; i < oneOf.length; i++) {
  58. let sch = oneOf[i];
  59. if ((sch === null || sch === void 0 ? void 0 : sch.$ref) && !(0, util_1.schemaHasRulesButRef)(sch, it.self.RULES)) {
  60. sch = compile_1.resolveRef.call(it.self, it.schemaEnv.root, it.baseId, sch === null || sch === void 0 ? void 0 : sch.$ref);
  61. if (sch instanceof compile_1.SchemaEnv)
  62. sch = sch.schema;
  63. }
  64. const propSch = (_a = sch === null || sch === void 0 ? void 0 : sch.properties) === null || _a === void 0 ? void 0 : _a[tagName];
  65. if (typeof propSch != "object") {
  66. throw new Error(`discriminator: oneOf subschemas (or referenced schemas) must have "properties/${tagName}"`);
  67. }
  68. tagRequired = tagRequired && (topRequired || hasRequired(sch));
  69. addMappings(propSch, i);
  70. }
  71. if (!tagRequired)
  72. throw new Error(`discriminator: "${tagName}" must be required`);
  73. return oneOfMapping;
  74. function hasRequired({ required }) {
  75. return Array.isArray(required) && required.includes(tagName);
  76. }
  77. function addMappings(sch, i) {
  78. if (sch.const) {
  79. addMapping(sch.const, i);
  80. }
  81. else if (sch.enum) {
  82. for (const tagValue of sch.enum) {
  83. addMapping(tagValue, i);
  84. }
  85. }
  86. else {
  87. throw new Error(`discriminator: "properties/${tagName}" must have "const" or "enum"`);
  88. }
  89. }
  90. function addMapping(tagValue, i) {
  91. if (typeof tagValue != "string" || tagValue in oneOfMapping) {
  92. throw new Error(`discriminator: "${tagName}" values must be unique strings`);
  93. }
  94. oneOfMapping[tagValue] = i;
  95. }
  96. }
  97. },
  98. };
  99. exports.default = def;
  100. //# sourceMappingURL=index.js.map