Function createFieldSetter

class_reflect.go:395–422

createFieldSetter creates a setter function for a struct field

(field reflect.StructField, fieldIndex int)

// createFieldSetter creates a setter function for a struct field
func createFieldSetter(field reflect.StructField, fieldIndex int) ClassSetterFunc {
	return func(ctx *Context, this *Value, value *Value) *Value {
		objValue, err := getValidObjectValue(ctx, this)
		if err != nil {
			return ctx.ThrowError(err)
		}

		// In our implementation, fieldIndex is always valid and fieldValue
		// is always settable for exported fields that we bind
		fieldValue := objValue.Field(fieldIndex)

		// Use Unmarshal to convert JavaScript value to Go value
		tempVar := reflect.New(fieldValue.Type())
		if err := ctx.Unmarshal(value, tempVar.Interface()); err != nil {
			return ctx.ThrowError(fmt.Errorf("failed to unmarshal value for field %s: %w", field.Name, err))
		}

		// Set the field value
		fieldValue.Set(tempVar.Elem())

		// Return the new JavaScript value
		// Note: In practice, if a JavaScript value can be successfully unmarshaled to a Go field,
		// that field value can almost always be marshaled back to JavaScript. The error case
		// is extremely rare and would indicate a deeper issue with the marshal/unmarshal system.
		returnValue, _ := ctx.Marshal(fieldValue.Interface())
		return returnValue
	}
}

// convertJSArgsToMethodArgs converts JavaScript arguments to Go reflect.Values for method calls
func convertJSArgsToMethodArgs(method *reflect.Method, args []*Value, ctx *Context) ([]reflect.Value, error) {