Delphi:如何获取(当前代码行,当前单位,当前函数)而不使用Assert
发布时间:2020-12-15 09:50:00 所属栏目:大数据 来源:网络整理
导读:我正在尝试在我的程序上创建一个日志系统,它将记录文本文件上的调试消息,我想保存调用日志消息的代码中的确切位置,但我不想使用Assert函数,因为它创建例外,这个系统不仅仅用于记录异常,我还要编写一些调试信息. 使用断言的示例: procedure AnyProcedure();b
我正在尝试在我的程序上创建一个日志系统,它将记录文本文件上的调试消息,我想保存调用日志消息的代码中的确切位置,但我不想使用Assert函数,因为它创建例外,这个系统不仅仅用于记录异常,我还要编写一些调试信息.
使用断言的示例: procedure AnyProcedure(); begin try Assert(1=0); except on E: Exception do Log.AddLine('Log occurred is '+E.Message+' : Start');//Log occurred is "c:progr~..jkdj.pas" at line [29] end; //....some code try Assert(1=0); except on E: Exception do Log.AddLine('Log occurred is '+E.Message+' : Step1 done');//Log occurred is "c:progr~..jkdj.pas" at line [37] end; //....some code try Assert(1=0); except on E: Exception do Log.AddLine('Log occurred is '+E.Message+' : Step2 done');//Log occurred is "c:progr~..jkdj.pas" at line [45] end; //....some code try Assert(1=0); except on E: Exception do Log.AddLine('Log occurred is '+E.Message+' : Step3 done');//Log occurred is "c:progr~..jkdj.pas" at line [53] end; //....some code try Assert(1=0); except on E: Exception do Log.AddLine('Log '+E.Message+' : End');//Log occurred is "c:progr~..jkdj.pas" at line [61] end; end; 这个工作正常,它引发异常并且代码变得太大,所以我不能使用函数 – 请参见下一个示例函数LogMessage-并在另一个地方调用它,因为该行也将是相同的文件name将是LogMessage函数实现的位置: 不工作的例子: procedure LogMessage(AMessage: String); var AFile,ALine: String; begin try Assert(1=0); //line 29 except on E: Exception do begin AFile:= Copy(E.Message,Pos(' (',E.Message)+2,Pos(',line ',E.Message)-Pos(' (',E.Message)-2); ALine:= Copy(E.Message,E.Message)+7,Pos(')',E.Message)-Pos(',E.Message)-7); ShowMessage('Log occurred in file "'+AFile+'" at line ['+ALine+'] : '+AMessage); end; end; end; procedure AnyProcedure(); begin LogMessage('Start'); //Log occurred in file "c:progr~....jkashdj.pas" at line [29] //.... LogMessage('step1'); //Log occurred in file "c:progr~....jkashdj.pas" at line [29] //.... LogMessage('step2'); //Log occurred in file "c:progr~....jkashdj.pas" at line [29] //.... LogMessage('step3'); //Log occurred in file "c:progr~....jkashdj.pas" at line [29] //.... LogMessage('end'); end 请帮助,并提前感谢. 解决方法
您可以将自己的
TAssertErrorProc 过程绑定到
AssertErrorProc 变量.你可能写这样的东西:
procedure OnAssert(const Message,Filename: string; LineNumber: Integer; ErrorAddr: Pointer); begin ShowMessage(Format('Assert in file "%s" at line %d.',[Filename,LineNumber])); end; procedure TForm1.FormCreate(Sender: TObject); begin AssertErrorProc := OnAssert; end; (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |