1*1c12ee1eSDan Willemsen// Copyright 2018 The Go Authors. All rights reserved. 2*1c12ee1eSDan Willemsen// Use of this source code is governed by a BSD-style 3*1c12ee1eSDan Willemsen// license that can be found in the LICENSE file. 4*1c12ee1eSDan Willemsen 5*1c12ee1eSDan Willemsen//go:build purego || appengine 6*1c12ee1eSDan Willemsen// +build purego appengine 7*1c12ee1eSDan Willemsen 8*1c12ee1eSDan Willemsenpackage protoreflect 9*1c12ee1eSDan Willemsen 10*1c12ee1eSDan Willemsenimport "google.golang.org/protobuf/internal/pragma" 11*1c12ee1eSDan Willemsen 12*1c12ee1eSDan Willemsentype valueType int 13*1c12ee1eSDan Willemsen 14*1c12ee1eSDan Willemsenconst ( 15*1c12ee1eSDan Willemsen nilType valueType = iota 16*1c12ee1eSDan Willemsen boolType 17*1c12ee1eSDan Willemsen int32Type 18*1c12ee1eSDan Willemsen int64Type 19*1c12ee1eSDan Willemsen uint32Type 20*1c12ee1eSDan Willemsen uint64Type 21*1c12ee1eSDan Willemsen float32Type 22*1c12ee1eSDan Willemsen float64Type 23*1c12ee1eSDan Willemsen stringType 24*1c12ee1eSDan Willemsen bytesType 25*1c12ee1eSDan Willemsen enumType 26*1c12ee1eSDan Willemsen ifaceType 27*1c12ee1eSDan Willemsen) 28*1c12ee1eSDan Willemsen 29*1c12ee1eSDan Willemsen// value is a union where only one type can be represented at a time. 30*1c12ee1eSDan Willemsen// This uses a distinct field for each type. This is type safe in Go, but 31*1c12ee1eSDan Willemsen// occupies more memory than necessary (72B). 32*1c12ee1eSDan Willemsentype value struct { 33*1c12ee1eSDan Willemsen pragma.DoNotCompare // 0B 34*1c12ee1eSDan Willemsen 35*1c12ee1eSDan Willemsen typ valueType // 8B 36*1c12ee1eSDan Willemsen num uint64 // 8B 37*1c12ee1eSDan Willemsen str string // 16B 38*1c12ee1eSDan Willemsen bin []byte // 24B 39*1c12ee1eSDan Willemsen iface interface{} // 16B 40*1c12ee1eSDan Willemsen} 41*1c12ee1eSDan Willemsen 42*1c12ee1eSDan Willemsenfunc valueOfString(v string) Value { 43*1c12ee1eSDan Willemsen return Value{typ: stringType, str: v} 44*1c12ee1eSDan Willemsen} 45*1c12ee1eSDan Willemsenfunc valueOfBytes(v []byte) Value { 46*1c12ee1eSDan Willemsen return Value{typ: bytesType, bin: v} 47*1c12ee1eSDan Willemsen} 48*1c12ee1eSDan Willemsenfunc valueOfIface(v interface{}) Value { 49*1c12ee1eSDan Willemsen return Value{typ: ifaceType, iface: v} 50*1c12ee1eSDan Willemsen} 51*1c12ee1eSDan Willemsen 52*1c12ee1eSDan Willemsenfunc (v Value) getString() string { 53*1c12ee1eSDan Willemsen return v.str 54*1c12ee1eSDan Willemsen} 55*1c12ee1eSDan Willemsenfunc (v Value) getBytes() []byte { 56*1c12ee1eSDan Willemsen return v.bin 57*1c12ee1eSDan Willemsen} 58*1c12ee1eSDan Willemsenfunc (v Value) getIface() interface{} { 59*1c12ee1eSDan Willemsen return v.iface 60*1c12ee1eSDan Willemsen} 61