Fold the constraint-facet UDAs from a compile-time sequence (e.g. __traits(getAttributes, someSymbol)) onto an existing schema node: @minimum, @maximum, @pattern, @minLength, @maxLength, @minItems, @maxItems, @format, @title, and @schemaDefault map to the matching keyword; any other UDA is ignored.
Generate the JSON Schema for T with compile-time-known settings.
Generate the JSON Schema for T.
Generation options.
Compile-time D-type → JSON Schema generator.
jsonSchemaOf!T derives a JSON Schema 2020-12 document (as a JsonNode) from a D type. The mapping is complete and fully recursive:
- bool → {type: "boolean"} - integral → {type: "integer"} (unsigned types additionally get minimum: 0) - floating point → {type: "number"} - string → {type: "string"} - enum → {type: "string", enum: [members…]} - arrays/slices → {type: "array", items: …} - string-keyed associative arrays → {type: "object", additionalProperties: …} - struct → {type: "object", properties: …, required: […]} - Nullable!T → {anyOf: [schema(T), {type: "null"}]} - SumType!(A, B, …) → {anyOf: [schema(A), schema(B), …]} - std.datetime: SysTime/DateTime → string + format "date-time", Date → "date", TimeOfDay → "time"
Struct types that are referenced from more than one place, or recursively, are emitted once into $defs and referenced via $ref; everything else is inlined. Any other type (pointers, classes, delegates, non-string AA keys) is rejected with a clear static assert.
Render the result with toStdJson (std.json), nodeToVibeJson (jsonschema:vibe), or .toString — or compile it directly with compileSchema to validate instances against it.