Function emitGoFlattenedObjectUnion

scripts/codegen/go.ts:2327–2394

(
    typeName: string,
    variants: JSONSchema7[],
    ctx: GoCodegenCtx,
    description?: string,
    experimental = false
)

}

function emitGoFlattenedObjectUnion(
    typeName: string,
    variants: JSONSchema7[],
    ctx: GoCodegenCtx,
    description?: string,
    experimental = false
): void {
    if (ctx.generatedNames.has(typeName)) return;
    ctx.generatedNames.add(typeName);

    const objectVariants = variants
        .map((variant) => goObjectUnionMemberSchema(variant, ctx))
        .filter((variant): variant is JSONSchema7 => variant !== undefined);
    const allProps = new Map<string, { schemas: JSONSchema7[]; requiredInAll: boolean; presentCount: number }>();

    for (const variant of objectVariants) {
        const required = new Set(variant.required || []);
        for (const [propName, propSchema] of Object.entries(variant.properties || {})) {
            if (typeof propSchema !== "object") continue;
            const existing = allProps.get(propName);
            if (existing) {
                existing.schemas.push(propSchema as JSONSchema7);
                existing.presentCount++;
                if (!required.has(propName)) {
                    existing.requiredInAll = false;
                }
            } else {
                allProps.set(propName, {
                    schemas: [propSchema as JSONSchema7],
                    requiredInAll: required.has(propName),
                    presentCount: 1,
                });
            }
        }
    }

    const lines: string[] = [];
    if (description) {
        pushGoCommentForContext(lines, description, ctx);
    }
    if (experimental) {
        pushGoExperimentalTypeComment(lines, typeName, ctx);
    }
    lines.push(`type ${typeName} struct {`);

    const fields: GoStructField[] = [];

    for (const [propName, info] of sortByGoFieldName([...allProps.entries()])) {
        const goName = toGoFieldName(propName);
        const mergedSchema = mergeGoFlattenedPropertySchema(typeName, propName, info.schemas, ctx);
        const requiredInAll = info.requiredInAll && info.presentCount === objectVariants.length;
        const goType = resolveGoPropertyType(mergedSchema, typeName, propName, requiredInAll, ctx);
        const description = info.schemas.find((schema) => schema.description)?.description;
        if (description) {
            pushGoCommentForContext(lines, description, ctx, "\t");
        }
        if (info.schemas.some((schema) => isSchemaDeprecated(schema))) {
            pushGoCommentForContext(lines, `Deprecated: ${goName} is deprecated.`, ctx, "\t");