Function generateSessionEventsCode

scripts/codegen/rust.ts:1115–1272

(schema: JSONSchema7)

}

export function generateSessionEventsCode(schema: JSONSchema7): string {
	const variants = extractEventVariants(schema);
	const ctx = makeCtx(
		collectDefinitionCollections(schema as Record<string, unknown>),
		{
			allowUntaggedUnions: true,
			allowedUnionTypeNames: [
				"ToolExecutionCompleteContent",
				"ToolExecutionCompleteContentResourceDetails",
			],
		},
	);

	// Generate per-event data structs
	for (const variant of variants) {
		emitRustStruct(
			variant.dataClassName,
			variant.dataSchema,
			ctx,
			variant.description,
		);
	}

	// Build the SessionEventType enum
	const typeEnumLines: string[] = [];
	typeEnumLines.push("/// Identifies the kind of session event.");
	typeEnumLines.push(
		"#[derive(Debug, Clone, Default, PartialEq, Eq, Hash, Serialize, Deserialize)]",
	);
	typeEnumLines.push("pub enum SessionEventType {");
	for (const variant of variants) {
		pushRustExperimentalDocs(
			typeEnumLines,
			variant.eventExperimental,
			"    ",
		);
		typeEnumLines.push(`    #[serde(rename = "${variant.typeName}")]`);
		typeEnumLines.push(`    ${variant.variantName},`);
	}
	typeEnumLines.push("    /// Unknown event type for forward compatibility.");
	typeEnumLines.push("    #[default]");
	typeEnumLines.push("    #[serde(other)]");
	typeEnumLines.push("    Unknown,");
	typeEnumLines.push("}");

	// Build the SessionEventData enum (adjacently tagged by type/data)
	const dataEnumLines: string[] = [];
	dataEnumLines.push(
		"/// Typed session event data, discriminated by the event `type` field.",
	);
	dataEnumLines.push("///");
	dataEnumLines.push(
		"/// Use with [`TypedSessionEvent`] for fully typed event handling.",
	);
	dataEnumLines.push("#[derive(Debug, Clone, Serialize, Deserialize)]");
	dataEnumLines.push(`#[serde(tag = "type", content = "data")]`);
	dataEnumLines.push("pub enum SessionEventData {");
	for (const variant of variants) {