641 lines
23 KiB
JavaScript
641 lines
23 KiB
JavaScript
/**
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* @since 3.10.0
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*/
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import * as Arr from "./Array.js";
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import * as errors_ from "./internal/schema/errors.js";
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import * as schemaId_ from "./internal/schema/schemaId.js";
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import * as Option from "./Option.js";
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import * as ParseResult from "./ParseResult.js";
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import * as Predicate from "./Predicate.js";
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import * as Record from "./Record.js";
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import * as AST from "./SchemaAST.js";
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/**
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* @category encoding
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* @since 3.10.0
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*/
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export const make = schema => {
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const definitions = {};
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const ast = AST.isTransformation(schema.ast) && isParseJsonTransformation(schema.ast.from)
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// Special case top level `parseJson` transformations
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? schema.ast.to : schema.ast;
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const jsonSchema = fromAST(ast, {
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definitions
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});
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const out = {
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$schema,
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$defs: {},
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...jsonSchema
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};
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if (Record.isEmptyRecord(definitions)) {
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delete out.$defs;
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} else {
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out.$defs = definitions;
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}
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return out;
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};
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/**
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* Returns a JSON Schema with additional options and definitions.
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*
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* **Warning**
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*
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* This function is experimental and subject to change.
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*
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* **Options**
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*
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* - `definitions`: A record of definitions that are included in the schema.
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* - `definitionPath`: The path to the definitions within the schema (defaults
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* to "#/$defs/").
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* - `target`: Which spec to target. Possible values are:
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* - `'jsonSchema7'`: JSON Schema draft-07 (default behavior).
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* - `'jsonSchema2019-09'`: JSON Schema draft-2019-09.
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* - `'openApi3.1'`: OpenAPI 3.1.
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* - `topLevelReferenceStrategy`: Controls the handling of the top-level
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* reference. Possible values are:
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* - `"keep"`: Keep the top-level reference (default behavior).
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* - `"skip"`: Skip the top-level reference.
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* - `additionalPropertiesStrategy`: Controls the handling of additional properties. Possible values are:
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* - `"strict"`: Disallow additional properties (default behavior).
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* - `"allow"`: Allow additional properties.
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*
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* @category encoding
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* @since 3.11.5
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* @experimental
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*/
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export const fromAST = (ast, options) => {
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const definitionPath = options.definitionPath ?? "#/$defs/";
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const getRef = id => definitionPath + id;
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const target = options.target ?? "jsonSchema7";
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const topLevelReferenceStrategy = options.topLevelReferenceStrategy ?? "keep";
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const additionalPropertiesStrategy = options.additionalPropertiesStrategy ?? "strict";
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return go(ast, options.definitions, "handle-identifier", [], {
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getRef,
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target,
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topLevelReferenceStrategy,
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additionalPropertiesStrategy
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}, "handle-annotation", "handle-errors");
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};
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const constNever = {
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$id: "/schemas/never",
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not: {}
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};
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const constAny = {
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$id: "/schemas/any"
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};
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const constUnknown = {
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$id: "/schemas/unknown"
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};
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const constVoid = {
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$id: "/schemas/void"
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};
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const constObject = {
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$id: "/schemas/object",
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"anyOf": [{
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"type": "object"
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}, {
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"type": "array"
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}]
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};
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const constEmptyStruct = {
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$id: "/schemas/%7B%7D",
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"anyOf": [{
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"type": "object"
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}, {
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"type": "array"
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}]
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};
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const $schema = "http://json-schema.org/draft-07/schema#";
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function getRawDescription(annotated) {
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if (annotated !== undefined) return Option.getOrUndefined(AST.getDescriptionAnnotation(annotated));
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}
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function getRawTitle(annotated) {
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if (annotated !== undefined) return Option.getOrUndefined(AST.getTitleAnnotation(annotated));
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}
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function getRawDefault(annotated) {
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if (annotated !== undefined) return AST.getDefaultAnnotation(annotated);
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return Option.none();
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}
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function encodeDefault(ast, def) {
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const getOption = ParseResult.getOption(ast, false);
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return getOption(def);
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}
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function getRawExamples(annotated) {
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if (annotated !== undefined) return Option.getOrUndefined(AST.getExamplesAnnotation(annotated));
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}
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function encodeExamples(ast, examples) {
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const getOption = ParseResult.getOption(ast, false);
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const out = Arr.filterMap(examples, e => getOption(e));
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return out.length > 0 ? out : undefined;
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}
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function filterBuiltIn(ast, annotation, key) {
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if (annotation !== undefined) {
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switch (ast._tag) {
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case "StringKeyword":
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return annotation !== AST.stringKeyword.annotations[key] ? annotation : undefined;
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case "NumberKeyword":
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return annotation !== AST.numberKeyword.annotations[key] ? annotation : undefined;
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case "BooleanKeyword":
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return annotation !== AST.booleanKeyword.annotations[key] ? annotation : undefined;
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}
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}
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return annotation;
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}
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function pruneJsonSchemaAnnotations(ast, description, title, def, examples) {
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const out = {};
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if (description !== undefined) out.description = description;
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if (title !== undefined) out.title = title;
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if (Option.isSome(def)) {
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const o = encodeDefault(ast, def.value);
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if (Option.isSome(o)) {
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out.default = o.value;
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}
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}
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if (examples !== undefined) {
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const encodedExamples = encodeExamples(ast, examples);
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if (encodedExamples !== undefined) {
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out.examples = encodedExamples;
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}
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}
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if (Object.keys(out).length === 0) {
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return undefined;
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}
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return out;
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}
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function getContextJsonSchemaAnnotations(ast, annotated) {
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return pruneJsonSchemaAnnotations(ast, getRawDescription(annotated), getRawTitle(annotated), getRawDefault(annotated), getRawExamples(annotated));
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}
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function getJsonSchemaAnnotations(ast) {
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return pruneJsonSchemaAnnotations(ast, filterBuiltIn(ast, getRawDescription(ast), AST.DescriptionAnnotationId), filterBuiltIn(ast, getRawTitle(ast), AST.TitleAnnotationId), getRawDefault(ast), getRawExamples(ast));
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}
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function mergeJsonSchemaAnnotations(jsonSchema, jsonSchemaAnnotations) {
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if (jsonSchemaAnnotations) {
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if ("$ref" in jsonSchema) {
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return {
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allOf: [jsonSchema],
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...jsonSchemaAnnotations
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};
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}
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return {
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...jsonSchema,
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...jsonSchemaAnnotations
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};
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}
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return jsonSchema;
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}
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const pruneUndefined = ast => {
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if (Option.isNone(AST.getJSONSchemaAnnotation(ast))) {
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return AST.pruneUndefined(ast, pruneUndefined, ast => pruneUndefined(ast.from));
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}
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};
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const isParseJsonTransformation = ast => ast.annotations[AST.SchemaIdAnnotationId] === AST.ParseJsonSchemaId;
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const isOverrideAnnotation = (ast, jsonSchema) => {
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if (AST.isRefinement(ast)) {
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const schemaId = ast.annotations[AST.SchemaIdAnnotationId];
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if (schemaId === schemaId_.IntSchemaId) {
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return "type" in jsonSchema && jsonSchema.type !== "integer";
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}
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}
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return "type" in jsonSchema || "oneOf" in jsonSchema || "anyOf" in jsonSchema || "$ref" in jsonSchema;
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};
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const mergeRefinements = (from, jsonSchema, ast) => {
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const out = {
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...from,
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...getJsonSchemaAnnotations(ast),
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...jsonSchema
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};
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out.allOf ??= [];
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const handle = (name, filter) => {
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if (name in jsonSchema && name in from) {
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out.allOf.unshift({
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[name]: from[name]
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});
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out.allOf = out.allOf.filter(filter);
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}
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};
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handle("minLength", i => i.minLength > jsonSchema.minLength);
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handle("maxLength", i => i.maxLength < jsonSchema.maxLength);
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handle("pattern", i => i.pattern !== jsonSchema.pattern);
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handle("minItems", i => i.minItems > jsonSchema.minItems);
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handle("maxItems", i => i.maxItems < jsonSchema.maxItems);
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handle("minimum", i => i.minimum > jsonSchema.minimum);
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handle("maximum", i => i.maximum < jsonSchema.maximum);
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handle("exclusiveMinimum", i => i.exclusiveMinimum > jsonSchema.exclusiveMinimum);
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handle("exclusiveMaximum", i => i.exclusiveMaximum < jsonSchema.exclusiveMaximum);
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handle("multipleOf", i => i.multipleOf !== jsonSchema.multipleOf);
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if (out.allOf.length === 0) {
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delete out.allOf;
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}
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return out;
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};
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function isContentSchemaSupported(options) {
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switch (options.target) {
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case "jsonSchema7":
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return false;
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case "jsonSchema2019-09":
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case "openApi3.1":
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return true;
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}
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}
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function getAdditionalProperties(options) {
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switch (options.additionalPropertiesStrategy) {
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case "allow":
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return true;
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case "strict":
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return false;
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}
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}
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function addASTAnnotations(jsonSchema, ast) {
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return addAnnotations(jsonSchema, getJsonSchemaAnnotations(ast));
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}
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function addAnnotations(jsonSchema, annotations) {
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if (annotations === undefined || Object.keys(annotations).length === 0) {
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return jsonSchema;
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}
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if ("$ref" in jsonSchema) {
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return {
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allOf: [jsonSchema],
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...annotations
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};
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}
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return {
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...jsonSchema,
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...annotations
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};
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}
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function getIdentifierAnnotation(ast) {
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const identifier = Option.getOrUndefined(AST.getJSONIdentifier(ast));
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if (identifier === undefined) {
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if (AST.isSuspend(ast)) {
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return getIdentifierAnnotation(ast.f());
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}
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if (AST.isTransformation(ast) && AST.isTypeLiteral(ast.from) && AST.isDeclaration(ast.to)) {
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const to = ast.to;
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const surrogate = AST.getSurrogateAnnotation(to);
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if (Option.isSome(surrogate)) {
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return getIdentifierAnnotation(to);
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}
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}
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}
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return identifier;
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}
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function go(ast, $defs, identifier, path, options, annotation, errors) {
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if (identifier === "handle-identifier" && (options.topLevelReferenceStrategy !== "skip" || AST.isSuspend(ast))) {
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const id = getIdentifierAnnotation(ast);
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if (id !== undefined) {
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const escapedId = id.replace(/~/ig, "~0").replace(/\//ig, "~1");
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const out = {
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$ref: options.getRef(escapedId)
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};
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if (!Record.has($defs, id)) {
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$defs[id] = out;
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$defs[id] = go(ast, $defs, "ignore-identifier", path, options, "handle-annotation", errors);
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}
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return out;
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}
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}
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if (annotation === "handle-annotation") {
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const hook = AST.getJSONSchemaAnnotation(ast);
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if (Option.isSome(hook)) {
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const handler = hook.value;
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if (isOverrideAnnotation(ast, handler)) {
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switch (ast._tag) {
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case "Declaration":
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return addASTAnnotations(handler, ast);
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default:
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return handler;
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}
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} else {
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switch (ast._tag) {
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case "Refinement":
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{
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const t = AST.getTransformationFrom(ast);
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if (t === undefined) {
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return mergeRefinements(go(ast.from, $defs, identifier, path, options, "handle-annotation", errors), handler, ast);
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} else {
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return go(t, $defs, identifier, path, options, "handle-annotation", errors);
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}
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}
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default:
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return {
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...go(ast, $defs, identifier, path, options, "ignore-annotation", errors),
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...handler
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};
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}
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}
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}
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}
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const surrogate = AST.getSurrogateAnnotation(ast);
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if (Option.isSome(surrogate)) {
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return go(surrogate.value, $defs, identifier, path, options, "handle-annotation", errors);
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}
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switch (ast._tag) {
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// Unsupported
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case "Declaration":
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case "UndefinedKeyword":
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case "BigIntKeyword":
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case "UniqueSymbol":
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case "SymbolKeyword":
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{
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if (errors === "ignore-errors") return addASTAnnotations(constAny, ast);
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throw new Error(errors_.getJSONSchemaMissingAnnotationErrorMessage(path, ast));
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}
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case "Suspend":
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{
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if (identifier === "handle-identifier") {
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if (errors === "ignore-errors") return addASTAnnotations(constAny, ast);
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throw new Error(errors_.getJSONSchemaMissingIdentifierAnnotationErrorMessage(path, ast));
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}
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return go(ast.f(), $defs, "ignore-identifier", path, options, "handle-annotation", errors);
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}
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// Primitives
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case "NeverKeyword":
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return addASTAnnotations(constNever, ast);
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case "VoidKeyword":
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return addASTAnnotations(constVoid, ast);
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case "UnknownKeyword":
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return addASTAnnotations(constUnknown, ast);
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case "AnyKeyword":
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return addASTAnnotations(constAny, ast);
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case "ObjectKeyword":
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return addASTAnnotations(constObject, ast);
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case "StringKeyword":
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return addASTAnnotations({
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type: "string"
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}, ast);
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case "NumberKeyword":
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return addASTAnnotations({
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type: "number"
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}, ast);
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case "BooleanKeyword":
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return addASTAnnotations({
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type: "boolean"
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}, ast);
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case "Literal":
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{
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const literal = ast.literal;
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if (literal === null) {
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return addASTAnnotations({
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type: "null"
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}, ast);
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} else if (Predicate.isString(literal)) {
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return addASTAnnotations({
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type: "string",
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enum: [literal]
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}, ast);
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} else if (Predicate.isNumber(literal)) {
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return addASTAnnotations({
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type: "number",
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enum: [literal]
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}, ast);
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} else if (Predicate.isBoolean(literal)) {
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return addASTAnnotations({
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type: "boolean",
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enum: [literal]
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}, ast);
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}
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if (errors === "ignore-errors") return addASTAnnotations(constAny, ast);
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throw new Error(errors_.getJSONSchemaMissingAnnotationErrorMessage(path, ast));
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}
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case "Enums":
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{
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const anyOf = ast.enums.map(e => {
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const type = Predicate.isNumber(e[1]) ? "number" : "string";
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return {
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type,
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title: e[0],
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enum: [e[1]]
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};
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});
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return anyOf.length >= 1 ? addASTAnnotations({
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$comment: "/schemas/enums",
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anyOf
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}, ast) : addASTAnnotations(constNever, ast);
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}
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case "TupleType":
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{
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const elements = ast.elements.map((e, i) => mergeJsonSchemaAnnotations(go(e.type, $defs, "handle-identifier", path.concat(i), options, "handle-annotation", errors), getContextJsonSchemaAnnotations(e.type, e)));
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const rest = ast.rest.map(type => mergeJsonSchemaAnnotations(go(type.type, $defs, "handle-identifier", path, options, "handle-annotation", errors), getContextJsonSchemaAnnotations(type.type, type)));
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const output = {
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type: "array"
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};
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// ---------------------------------------------
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// handle elements
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// ---------------------------------------------
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const len = ast.elements.length;
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if (len > 0) {
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output.minItems = len - ast.elements.filter(element => element.isOptional).length;
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output.items = elements;
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}
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// ---------------------------------------------
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// handle rest element
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// ---------------------------------------------
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const restLength = rest.length;
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if (restLength > 0) {
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const head = rest[0];
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const isHomogeneous = restLength === 1 && ast.elements.every(e => e.type === ast.rest[0].type);
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if (isHomogeneous) {
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output.items = head;
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} else {
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output.additionalItems = head;
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}
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// ---------------------------------------------
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// handle post rest elements
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// ---------------------------------------------
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if (restLength > 1) {
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if (errors === "ignore-errors") return addASTAnnotations(constAny, ast);
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throw new Error(errors_.getJSONSchemaUnsupportedPostRestElementsErrorMessage(path));
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}
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} else {
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if (len > 0) {
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output.additionalItems = false;
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} else {
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output.maxItems = 0;
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}
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}
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return addASTAnnotations(output, ast);
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}
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case "TypeLiteral":
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{
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if (ast.propertySignatures.length === 0 && ast.indexSignatures.length === 0) {
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return addASTAnnotations(constEmptyStruct, ast);
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}
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const output = {
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type: "object",
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required: [],
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properties: {},
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additionalProperties: getAdditionalProperties(options)
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};
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let patternProperties = undefined;
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let propertyNames = undefined;
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for (const is of ast.indexSignatures) {
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const pruned = pruneUndefined(is.type) ?? is.type;
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const parameter = is.parameter;
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switch (parameter._tag) {
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case "StringKeyword":
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{
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output.additionalProperties = go(pruned, $defs, "handle-identifier", path, options, "handle-annotation", errors);
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break;
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}
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case "TemplateLiteral":
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{
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patternProperties = go(pruned, $defs, "handle-identifier", path, options, "handle-annotation", errors);
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propertyNames = {
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type: "string",
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pattern: AST.getTemplateLiteralRegExp(parameter).source
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};
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break;
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}
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case "Refinement":
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{
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patternProperties = go(pruned, $defs, "handle-identifier", path, options, "handle-annotation", errors);
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propertyNames = go(parameter, $defs, "handle-identifier", path, options, "handle-annotation", errors);
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break;
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}
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case "SymbolKeyword":
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{
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const indexSignaturePath = path.concat("[symbol]");
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output.additionalProperties = go(pruned, $defs, "handle-identifier", indexSignaturePath, options, "handle-annotation", errors);
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propertyNames = go(parameter, $defs, "handle-identifier", indexSignaturePath, options, "handle-annotation", errors);
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break;
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}
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}
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}
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// ---------------------------------------------
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// handle property signatures
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// ---------------------------------------------
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for (let i = 0; i < ast.propertySignatures.length; i++) {
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const ps = ast.propertySignatures[i];
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const name = ps.name;
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if (Predicate.isString(name)) {
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const pruned = pruneUndefined(ps.type);
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const type = pruned ?? ps.type;
|
|
output.properties[name] = mergeJsonSchemaAnnotations(go(type, $defs, "handle-identifier", path.concat(ps.name), options, "handle-annotation", errors), getContextJsonSchemaAnnotations(type, ps));
|
|
// ---------------------------------------------
|
|
// handle optional property signatures
|
|
// ---------------------------------------------
|
|
if (!ps.isOptional && pruned === undefined) {
|
|
output.required.push(name);
|
|
}
|
|
} else {
|
|
if (errors === "ignore-errors") return addASTAnnotations(constAny, ast);
|
|
throw new Error(errors_.getJSONSchemaUnsupportedKeyErrorMessage(name, path));
|
|
}
|
|
}
|
|
// ---------------------------------------------
|
|
// handle index signatures
|
|
// ---------------------------------------------
|
|
if (patternProperties !== undefined) {
|
|
delete output.additionalProperties;
|
|
output.patternProperties = {
|
|
"": patternProperties
|
|
};
|
|
}
|
|
if (propertyNames !== undefined) {
|
|
output.propertyNames = propertyNames;
|
|
}
|
|
return addASTAnnotations(output, ast);
|
|
}
|
|
case "Union":
|
|
{
|
|
const members = ast.types.map(t => go(t, $defs, "handle-identifier", path, options, "handle-annotation", errors));
|
|
const anyOf = compactUnion(members);
|
|
switch (anyOf.length) {
|
|
case 0:
|
|
return constNever;
|
|
case 1:
|
|
return addASTAnnotations(anyOf[0], ast);
|
|
default:
|
|
return addASTAnnotations({
|
|
anyOf
|
|
}, ast);
|
|
}
|
|
}
|
|
case "Refinement":
|
|
return go(ast.from, $defs, identifier, path, options, "handle-annotation", errors);
|
|
case "TemplateLiteral":
|
|
{
|
|
const regex = AST.getTemplateLiteralRegExp(ast);
|
|
return addASTAnnotations({
|
|
type: "string",
|
|
title: String(ast),
|
|
description: "a template literal",
|
|
pattern: regex.source
|
|
}, ast);
|
|
}
|
|
case "Transformation":
|
|
{
|
|
if (isParseJsonTransformation(ast.from)) {
|
|
const out = {
|
|
"type": "string",
|
|
"contentMediaType": "application/json"
|
|
};
|
|
if (isContentSchemaSupported(options)) {
|
|
out["contentSchema"] = go(ast.to, $defs, identifier, path, options, "handle-annotation", errors);
|
|
}
|
|
return out;
|
|
}
|
|
const from = go(ast.from, $defs, identifier, path, options, "handle-annotation", errors);
|
|
if (ast.transformation._tag === "TypeLiteralTransformation" && isJsonSchema7Object(from)) {
|
|
const to = go(ast.to, {}, "ignore-identifier", path, options, "handle-annotation", "ignore-errors");
|
|
if (isJsonSchema7Object(to)) {
|
|
for (const t of ast.transformation.propertySignatureTransformations) {
|
|
const toKey = t.to;
|
|
const fromKey = t.from;
|
|
if (Predicate.isString(toKey) && Predicate.isString(fromKey)) {
|
|
const toProperty = to.properties[toKey];
|
|
if (Predicate.isRecord(toProperty)) {
|
|
const fromProperty = from.properties[fromKey];
|
|
if (Predicate.isRecord(fromProperty)) {
|
|
const annotations = {};
|
|
if (Predicate.isString(toProperty.title)) annotations.title = toProperty.title;
|
|
if (Predicate.isString(toProperty.description)) annotations.description = toProperty.description;
|
|
if (Array.isArray(toProperty.examples)) annotations.examples = toProperty.examples;
|
|
if (Object.hasOwn(toProperty, "default")) annotations.default = toProperty.default;
|
|
from.properties[fromKey] = addAnnotations(fromProperty, annotations);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return addASTAnnotations(from, ast);
|
|
}
|
|
}
|
|
}
|
|
function isJsonSchema7Object(jsonSchema) {
|
|
return Predicate.isRecord(jsonSchema) && jsonSchema.type === "object" && Predicate.isRecord(jsonSchema.properties);
|
|
}
|
|
function isNeverWithoutCustomAnnotations(jsonSchema) {
|
|
return jsonSchema === constNever || Predicate.hasProperty(jsonSchema, "$id") && jsonSchema.$id === constNever.$id && Object.keys(jsonSchema).length === 3 && jsonSchema.title === AST.neverKeyword.annotations[AST.TitleAnnotationId];
|
|
}
|
|
function isAny(jsonSchema) {
|
|
return "$id" in jsonSchema && jsonSchema.$id === constAny.$id;
|
|
}
|
|
function isUnknown(jsonSchema) {
|
|
return "$id" in jsonSchema && jsonSchema.$id === constUnknown.$id;
|
|
}
|
|
function isVoid(jsonSchema) {
|
|
return "$id" in jsonSchema && jsonSchema.$id === constVoid.$id;
|
|
}
|
|
function isCompactableLiteral(jsonSchema) {
|
|
return Predicate.hasProperty(jsonSchema, "enum") && "type" in jsonSchema && Object.keys(jsonSchema).length === 2;
|
|
}
|
|
function compactUnion(members) {
|
|
const out = [];
|
|
for (const m of members) {
|
|
if (isNeverWithoutCustomAnnotations(m)) continue;
|
|
if (isAny(m) || isUnknown(m) || isVoid(m)) return [m];
|
|
if (isCompactableLiteral(m) && out.length > 0) {
|
|
const last = out[out.length - 1];
|
|
if (isCompactableLiteral(last) && last.type === m.type) {
|
|
out[out.length - 1] = {
|
|
type: last.type,
|
|
enum: [...last.enum, ...m.enum]
|
|
};
|
|
continue;
|
|
}
|
|
}
|
|
out.push(m);
|
|
}
|
|
return out;
|
|
}
|
|
//# sourceMappingURL=JSONSchema.js.map
|