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{
***************************************************************************
* *
* This source is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This code is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* A copy of the GNU General Public License is available on the World *
* Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also *
* obtain it by writing to the Free Software Foundation, *
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
***************************************************************************
Author: Mattias Gaertner
Abstract:
Simple demonstrating, how to setup the codetools, FPC and Lazarus Source
directory to find a declaration.
}
program FindDeclaration;
{$mode objfpc}{$H+}
uses
SysUtils, CodeCache, CodeToolManager, CodeToolsConfig, LazFileUtils,
SimpleUnit1;
const
ConfigFilename = 'codetools.config';
var
Options: TCodeToolsOptions;
NewCode: TCodeBuffer;
NewX, NewY, NewTopLine: integer;
Code: TCodeBuffer;
X: Integer;
Y, BlockTopLine, BlockBottomLine: Integer;
Filename: String;
Line: String;
begin
if (ParamCount>=1) and (Paramcount<3) then begin
writeln('Usage:');
writeln(' ',ParamStr(0));
writeln(' ',ParamStr(0),' <filename> <X> <Y>');
Halt(1);
end;
// setup the Options
Options:=TCodeToolsOptions.Create;
try
// setup your paths
writeln('Config=',ConfigFilename);
if FileExists(ConfigFilename) then begin
// To not parse the FPC sources every time, the options are saved to a file.
Options.LoadFromFile(ConfigFilename);
end;
Options.InitWithEnvironmentVariables;
if Options.FPCSrcDir='' then
Options.FPCSrcDir:=ExpandFileName('~/freepascal/fpc');
if Options.LazarusSrcDir='' then
Options.LazarusSrcDir:=ExpandFileName('~/pascal/lazarus');
// optional: ProjectDir and TestPascalFile exists only to easily test some
// things.
Options.ProjectDir:=SetDirSeparators(GetCurrentDir+'/scanexamples/');
Filename:=Options.ProjectDir+'simpleunit1.pas';
// init the codetools
writeln('Scanning FPC sources may take a while ...');
CodeToolBoss.Init(Options);
// save the options and the FPC unit links results.
Options.SaveToFile(ConfigFilename);
// Example: find declaration of 'TObject'
X:=5;
Y:=43;
writeln('FPCDIR=',Options.FPCSrcDir);
writeln('PP=',Options.FPCPath);
writeln('LAZARUSDIR=',Options.LazarusSrcDir);
writeln('FPCTARGET=',Options.TargetOS);
writeln('FPCTARGETCPU=',Options.TargetProcessor);
if (ParamCount>=3) then begin
Filename:=CleanAndExpandFilename(ParamStr(1));
X:=StrToInt(ParamStr(2));
Y:=StrToInt(ParamStr(3));
writeln('File: ',Filename,' Line=',Y,' Column=',X);
end;
// Step 1: load the file
Code:=CodeToolBoss.LoadFile(Filename,false,false);
if Code=nil then
raise Exception.Create('loading failed '+Filename);
Line:=Code.GetLine(Y-1);
writeln('Line ',Y,': ',copy(Line,1,X-1),'|',copy(Line,X,length(Line)));
// Step 2: find declaration
if CodeToolBoss.FindDeclaration(Code,X,Y,NewCode,NewX,NewY,NewTopLine,
BlockTopLine,BlockBottomLine) then
begin
writeln('Declaration found: ',NewCode.Filename,' Line=',NewY,' Column=',NewX);
end else begin
if CodeToolBoss.ErrorMessage<>'' then
writeln('Parse error: ',CodeToolBoss.ErrorMessage)
else
writeln('Declaration not found');
end;
except
on E: Exception do begin
writeln('Error: ',E.Message);
end;
end;
Options.Free;
end.
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