Function marshal

http/codegen/service_data.go:2981–2983

marshal initializes a data structure defined by target type from a data structure defined by source type. The fields in the source and target data structure use non-pointers for attributes with default values. source, target are the attributes used in the transformation sourceVar, targetVar are th

(source, target *expr.AttributeExpr, sourceVar, targetVar string, sourceCtx, targetCtx *codegen.AttributeContext)

//
// sourceCtx, targetCtx are the source and target attribute contexts
func marshal(source, target *expr.AttributeExpr, sourceVar, targetVar string, sourceCtx, targetCtx *codegen.AttributeContext) (string, []*codegen.TransformFunctionData, error) {
	return codegen.GoTransform(source, target, sourceVar, targetVar, sourceCtx, targetCtx, "marshal", true)
}

// needConversion returns true if the type needs to be converted from a string.
func needConversion(dt expr.DataType) bool {