forked from davyxu/tabtoy
/
cpp.go
472 lines (373 loc) · 9.95 KB
/
cpp.go
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package printer
import (
"fmt"
"text/template"
"github.com/davyxu/tabtoy/v2/i18n"
"github.com/davyxu/tabtoy/v2/model"
"strings"
)
const cppTemplate = `// Generated by github.com/davyxu/tabtoy
// Version: {{.ToolVersion}}
// DO NOT EDIT!!
#include <vector>
#include <map>
#include <string>
namespace {{.Namespace}}{{$globalIndex:=.Indexes}}{{$verticalFields:=.VerticalFields}}
{
{{range .Enums}}
// Defined in table: {{.DefinedTable}}
enum class {{.Name}}
{
{{range .Fields}}
{{.Comment}}
{{.FieldDescriptor.Name}} = {{.FieldDescriptor.EnumValue}}, {{.Alias}}
{{end}}
};
{{end}}
{{range .Classes}}
{{if not .IsCombine}}
// Defined in table: {{.DefinedTable}}
class {{.Name}}
{
public:
{{range .Fields}}
{{.Comment}}
{{.TypeCode}} {{.Alias}}
{{end}}
}; {{end}}
{{end}}
{{range .Classes}}
{{if .IsCombine}}
// Defined in table: {{.DefinedTable}}
class {{.Name}}
{
{{if .IsCombine}}
public:
tabtoy::Logger TableLogger;
{{end}}
{{range .Fields}}
{{.Comment}}
{{.TypeCode}} {{.Alias}}
{{end}}
{{if .IsCombine}}
//#region Index code
{{range $globalIndex}}std::map<{{.IndexType}}, {{.RowType}}> _{{.RowName}}By{{.IndexName}};
public:
class {{.RowType}}* Get{{.RowName}}By{{.IndexName}}({{.IndexType}} {{.IndexName}}, {{.RowType}}* def = nullptr)
{
auto ret = _{{.RowName}}By{{.IndexName}}.find( {{.IndexName}} );
if ( ret != _{{.RowName}}By{{.IndexName}}.end() )
{
return &ret->second;
}
if ( def == nullptr )
{
TableLogger.ErrorLine("Get{{.RowName}}By{{.IndexName}} failed, {{.IndexName}}: %s", {{.IndexName}});
}
return def;
}
{{end}}
{{range $verticalFields}}
public:
class {{.StructName}}* Get{{.Name}}( )
{
return &{{.Name}}_[0];
}
{{end}}
//#endregion
//#region Deserialize code
{{range $.Classes}}
public:
static void Deserialize( {{.Name}}& ins, tabtoy::DataReader& reader )
{
int tag = -1;
while ( -1 != (tag = reader.ReadTag()))
{
switch (tag)
{ {{range .Fields}}
case {{.Tag}}:
{
{{.ReadCode}}
}
break; {{end}}
}
}
{{range $a, $row :=.IndexedFields}}
// Build {{$row.FieldDescriptor.Name}} Index
for( size_t i = 0;i< ins.{{$row.FieldDescriptor.Name}}_.size();i++)
{
auto element = ins.{{$row.FieldDescriptor.Name}}_[i];
{{range $b, $key := .IndexKeys}}
ins._{{$row.FieldDescriptor.Name}}By{{$key.Name}}.emplace(std::make_pair(element.{{$key.Name}}_, element));
{{end}}
}
{{end}}
}{{end}}
//#endregion
{{end}}
};
{{end}}
{{end}}
}
`
type cppIndexField struct {
TableIndex
}
func (self cppIndexField) IndexName() string {
return self.Index.Name
}
func (self cppIndexField) RowType() string {
return self.Row.Complex.Name
}
func (self cppIndexField) RowName() string {
return self.Row.Name
}
func (self cppIndexField) IndexType() string {
switch self.Index.Type {
case model.FieldType_Int32:
return "int"
case model.FieldType_UInt32:
return "unsigned int"
case model.FieldType_Int64:
return "long long"
case model.FieldType_UInt64:
return "unsigned long long"
case model.FieldType_String:
return "std::string"
case model.FieldType_Float:
return "float"
case model.FieldType_Bool:
return "bool"
case model.FieldType_Enum:
return self.Index.Complex.Name
default:
log.Errorf("%s can not be index ", self.Index.String())
}
return "unknown"
}
type cppField struct {
*model.FieldDescriptor
IndexKeys []*model.FieldDescriptor
parentStruct *cppStructModel
}
func (self cppField) Alias() string {
v := self.FieldDescriptor.Meta.GetString("Alias")
if v == "" {
return ""
}
return "// " + v
}
func (self cppField) Comment() string {
if self.FieldDescriptor.Comment == "" {
return ""
}
// zjwps 建议修改
return "/// <summary> \n /// " + strings.Replace(self.FieldDescriptor.Comment, "\n", "\n ///", -1) + "\n /// </summary>"
}
func (self cppField) ReadCode() string {
var baseType string
var descHandlerCode string
switch self.Type {
case model.FieldType_Int32:
baseType = "Int32"
case model.FieldType_UInt32:
baseType = "UInt32"
case model.FieldType_Int64:
baseType = "Int64"
case model.FieldType_UInt64:
baseType = "UInt64"
case model.FieldType_String:
baseType = "String"
case model.FieldType_Float:
baseType = "Float"
case model.FieldType_Bool:
baseType = "Bool"
case model.FieldType_Enum:
if self.Complex == nil {
return "unknown"
}
baseType = fmt.Sprintf("Enum<%s>", self.Complex.Name)
case model.FieldType_Struct:
if self.Complex == nil {
return "unknown"
}
baseType = fmt.Sprintf("Struct<%s>", self.Complex.Name)
}
if self.Type == model.FieldType_Struct {
descHandlerCode = "Deserialize"
//descHandlerCode = fmt.Sprintf("%sDeserializeHandler", self.Complex.Name)
}
if self.IsRepeated {
return fmt.Sprintf("ins.%s_.emplace_back( reader.Read%s(%s) );", self.Name, baseType, descHandlerCode)
} else {
return fmt.Sprintf("ins.%s_ = reader.Read%s(%s);", self.Name, baseType, descHandlerCode)
}
}
func (self cppField) Tag() string {
if self.parentStruct.IsCombine() {
tag := model.MakeTag(int32(model.FieldType_Table), self.Order)
return fmt.Sprintf("0x%x", tag)
}
return fmt.Sprintf("0x%x", self.FieldDescriptor.Tag())
}
func (self cppField) StructName() string {
if self.Complex == nil {
return "[NotComplex]"
}
return self.Complex.Name
}
func (self cppField) IsVerticalStruct() bool {
if self.FieldDescriptor.Complex == nil {
return false
}
return self.FieldDescriptor.Complex.File.Pragma.GetBool("Vertical")
}
func (self cppField) TypeCode() string {
var raw string
switch self.Type {
case model.FieldType_Int32:
raw = "int"
case model.FieldType_UInt32:
raw = "unsigned int"
case model.FieldType_Int64:
raw = "long long"
case model.FieldType_UInt64:
raw = "unsigned long long"
case model.FieldType_String:
raw = "std::string"
case model.FieldType_Float:
raw = "float"
case model.FieldType_Bool:
raw = "bool"
case model.FieldType_Enum:
if self.Complex == nil {
log.Errorln("unknown enum type ", self.Type)
return "unknown"
}
raw = self.Complex.Name
case model.FieldType_Struct:
if self.Complex == nil {
log.Errorln("unknown struct type ", self.Type, self.FieldDescriptor.Name, self.FieldDescriptor.Parent.Name)
return "unknown"
}
raw = self.Complex.Name
// 非repeated的结构体
if !self.IsRepeated {
return fmt.Sprintf("public:\r\n \t\t%s %s_;", raw, self.Name)
}
default:
raw = "unknown"
}
if self.IsRepeated {
return fmt.Sprintf("public:\r\n \t\tstd::vector<%s> %s_;", raw, self.Name)
}
return fmt.Sprintf("public:\r\n \t\t%s %s_ = %s;", raw, self.Name, wrapCppDefaultValue(self.FieldDescriptor))
}
func wrapCppDefaultValue(fd *model.FieldDescriptor) string {
switch fd.Type {
case model.FieldType_Enum:
return fmt.Sprintf("%s::%s", fd.Complex.Name, fd.DefaultValue())
case model.FieldType_String:
return fmt.Sprintf("\"%s\"", fd.DefaultValue())
case model.FieldType_Float:
var defValue = fd.DefaultValue()
if !strings.ContainsAny(defValue, ".") {
return fmt.Sprintf("%s.0f", defValue)
}
return fmt.Sprintf("%sf", defValue)
}
return fd.DefaultValue()
}
type cppStructModel struct {
*model.Descriptor
Fields []cppField
IndexedFields []cppField // 与cppField.IndexKeys组成树状的索引层次
}
func (self *cppStructModel) DefinedTable() string {
return self.File.Name
}
func (self *cppStructModel) Name() string {
return self.Descriptor.Name
}
func (self *cppStructModel) IsCombine() bool {
return self.Descriptor.Usage == model.DescriptorUsage_CombineStruct
}
type cppFileModel struct {
Namespace string
ToolVersion string
Classes []*cppStructModel
Enums []*cppStructModel
Indexes []cppIndexField // 全局的索引
VerticalFields []cppField
}
type cppPrinter struct {
}
func (self *cppPrinter) Run(g *Globals) *Stream {
tpl, err := template.New("cpp").Parse(cppTemplate)
if err != nil {
log.Errorln(err)
return nil
}
var m cppFileModel
m.Namespace = g.FileDescriptor.Pragma.GetString("Package")
m.ToolVersion = g.Version
// combinestruct的全局索引
for _, ti := range g.GlobalIndexes {
// 索引也限制
if !ti.Index.Parent.File.MatchTag(".cpp") {
continue
}
m.Indexes = append(m.Indexes, cppIndexField{TableIndex: ti})
}
// 遍历所有类型
for _, d := range g.FileDescriptor.Descriptors {
// 这给被限制输出
if !d.File.MatchTag(".cpp") {
log.Infof("%s: %s", i18n.String(i18n.Printer_IgnoredByOutputTag), d.Name)
continue
}
var sm cppStructModel
sm.Descriptor = d
switch d.Kind {
case model.DescriptorKind_Struct:
m.Classes = append(m.Classes, &sm)
case model.DescriptorKind_Enum:
m.Enums = append(m.Enums, &sm)
}
// 遍历字段
for _, fd := range d.Fields {
// 对CombineStruct的XXDefine对应的字段
if d.Usage == model.DescriptorUsage_CombineStruct {
// 这个字段被限制输出
if fd.Complex != nil && !fd.Complex.File.MatchTag(".cpp") {
continue
}
// 这个结构有索引才创建
if fd.Complex != nil && len(fd.Complex.Indexes) > 0 {
// 被索引的结构
indexedField := cppField{FieldDescriptor: fd, parentStruct: &sm}
// 索引字段
for _, key := range fd.Complex.Indexes {
indexedField.IndexKeys = append(indexedField.IndexKeys, key)
}
sm.IndexedFields = append(sm.IndexedFields, indexedField)
}
if fd.Complex != nil && fd.Complex.File.Pragma.GetBool("Vertical") {
m.VerticalFields = append(m.VerticalFields, cppField{FieldDescriptor: fd, parentStruct: &sm})
}
}
csField := cppField{FieldDescriptor: fd, parentStruct: &sm}
sm.Fields = append(sm.Fields, csField)
}
}
bf := NewStream()
err = tpl.Execute(bf.Buffer(), &m)
if err != nil {
log.Errorln(err)
return nil
}
return bf
}
func init() {
RegisterPrinter("cpp", &cppPrinter{})
}