Function resolveRpcType

scripts/codegen/csharp.ts:1512–1614

(schema: JSONSchema7, isRequired: boolean, parentClassName: string, propName: string, classes: string[])

}

function resolveRpcType(schema: JSONSchema7, isRequired: boolean, parentClassName: string, propName: string, classes: string[]): string {
    if (isOpaqueJson(schema)) {
        return isRequired ? "JsonElement" : "JsonElement?";
    }
    // Handle $ref by resolving against schema definitions and generating the referenced class
    if (schema.$ref) {
        const typeName = typeToClassName(refTypeName(schema.$ref, rpcDefinitions));
        const refSchema = resolveRef(schema.$ref, rpcDefinitions);
        if (!refSchema) {
            return isRequired ? typeName : `${typeName}?`;
        }

        if (refSchema.enum && Array.isArray(refSchema.enum)) {
            const enumName = getOrCreateEnum(typeName, "", refSchema.enum as string[], rpcEnumOutput, refSchema.description, getEnumValueDescriptions(refSchema), undefined, isSchemaDeprecated(refSchema), isSchemaExperimental(refSchema) || experimentalRpcTypes.has(typeName));
            return isRequired ? enumName : `${enumName}?`;
        }

        if (refSchema.type === "object" && refSchema.properties) {
            const cls = emitRpcClass(typeName, refSchema, "public", classes);
            if (cls) classes.push(cls);
            return isRequired ? typeName : `${typeName}?`;
        }

        return resolveRpcType(refSchema, isRequired, parentClassName, propName, classes);
    }
    // Handle anyOf: [T, null/{not:{}}] → T? (nullable typed property)
    const nullableInner = getNullableInner(schema);
    if (nullableInner) {
        return resolveRpcType(nullableInner, false, parentClassName, propName, classes);
    }
    // Discriminated union: anyOf with multiple variants sharing a const discriminator
    if (schema.anyOf && Array.isArray(schema.anyOf)) {
        const nonNull = schema.anyOf.filter((s) => typeof s === "object" && s !== null && (s as JSONSchema7).type !== "null");
        if (nonNull.length > 1) {
            const variants = (nonNull as JSONSchema7[]).map((v) => {
                if (v.$ref) {
                    const resolved = resolveRef(v.$ref, rpcDefinitions);
                    return resolved ?? v;
                }
                return v;
            });
            const discriminatorInfo = findDiscriminator(variants);
            if (discriminatorInfo) {
                const hasNull = schema.anyOf.length > nonNull.length;
                const baseClassName = (schema.title as string) ?? `${parentClassName}${propName}`;
                if (!emittedRpcClassSchemas.has(baseClassName)) {
                    emittedRpcClassSchemas.set(baseClassName, "polymorphic");
                    const nestedMap = new Map<string, string>();
                    const rpcPropertyResolver: PropertyTypeResolver = (propSchema, parentClass, pName, isReq, _kt, nestedCls, enumOut) => {
                        const nestedRpcClasses: string[] = [];
                        const result = resolveRpcType(propSchema, isReq, parentClass, pName, nestedRpcClasses);
                        for (const cls of nestedRpcClasses) {
                            nestedCls.set(cls.match(/class (\w+)/)?.[1] ?? cls.slice(0, 40), cls);
                        }
                        return result;
                    };
                    const polymorphicCode = generateDiscriminatedUnionClass(baseClassName, discriminatorInfo, variants, rpcKnownTypes, nestedMap, rpcEnumOutput, schema.description, rpcPropertyResolver, isSchemaExperimental(schema) || experimentalRpcTypes.has(baseClassName));
                    classes.push(polymorphicCode);