func Value2Struct(meta *tool.FieldMetaV1, structValue string, fd *pbmeta.FieldDescriptor, callback func(string, string) bool) (isValue2Struct bool, hasError bool) {
if meta == nil {
return
}
if meta.String2Struct == false {
return
}
if !fd.IsMessageType() {
hasError = true
log.Errorf("%s is not message type", fd.Name())
return
}
msgD := fd.MessageDesc()
if msgD == nil {
hasError = true
log.Errorf("%s message not found", fd.Name())
return
}
p := newLineParser(fd, structValue)
// 匹配顺序从高到低
defer func() {
err := recover()
switch err.(type) {
// 运行时错误
case interface {
RuntimeError()
}:
// 继续外抛， 方便调试
panic(err)
case error:
hasError = true
log.Errorf("field: %s parse error, %v", fd.Name(), err)
default:
isValue2Struct = true
}
}()
p.NextToken()
for {
if p.TokenID() != Token_Identifier {
hasError = true
log.Errorf("expect key in field: %s", fd.Name())
return
}
key := p.TokenValue()
structFD := FieldByNameWithMeta(msgD, key)
// 尝试查找字段定义
if structFD == nil {
hasError = true
log.Errorf("%s field not found ", key)
return
}
p.NextToken()
if p.TokenID() != Token_Comma {
hasError = true
log.Errorf("%s need ':' split value", key)
return
}
p.NextToken()
value := p.TokenValue()
// 按照正常流程转换值
if afterValue, ok := ValueConvetor(structFD, value); ok {
if !callback(key, afterValue) {
hasError = true
return
}
} else {
hasError = true
log.Errorf("%s convert failed", key)
return
}
p.NextToken()
}
return
}
