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https://gitlab.com/freepascal.org/lazarus/lazarus.git
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130 lines
4.8 KiB
ObjectPascal
130 lines
4.8 KiB
ObjectPascal
{
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***************************************************************************
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* *
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* This source is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This code is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* General Public License for more details. *
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* *
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* A copy of the GNU General Public License is available on the World *
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* Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also *
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* obtain it by writing to the Free Software Foundation, *
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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* *
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***************************************************************************
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Author: Mattias Gaertner
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Abstract:
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Demonstration how to change the parameter list of a procedure and
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adapt all references.
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}
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program changeparamlist;
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{$mode objfpc}{$H+}
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uses
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Classes, SysUtils, CodeCache, CodeToolManager, FileProcs, AVL_Tree, CodeAtom,
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BasicCodeTools, SourceChanger, CodeTree, FindDeclarationTool, contnrs,
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CTUnitGraph, ChangeDeclarationTool,
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ChangeParamList1;
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const
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ConfigFilename = 'codetools.config';
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var
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Filename: string;
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Code: TCodeBuffer;
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Tool: TCodeTool;
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procedure ChangeProc(ProcName: string; var Changes: TObjectList);
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var
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ProcNode: TCodeTreeNode;
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ProcPos: TCodeXYPosition;
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RefCache: TFindIdentifierReferenceCache;
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ListOfPCodeXYPosition: TFPList;
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TreeOfPCodeXYPosition: TAVLTree;
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begin
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RefCache:=nil;
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ListOfPCodeXYPosition:=nil;
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TreeOfPCodeXYPosition:=CodeToolBoss.CreateTreeOfPCodeXYPosition;
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try
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if not CodeToolBoss.FindProcDeclaration(Code,ProcName,Tool,ProcNode) then
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raise Exception.Create('procedure '+ProcName+' not found in '+Filename);
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if not Tool.CleanPosToCaret(ProcNode.FirstChild.StartPos,ProcPos) then
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raise Exception.Create('Tool.CleanPosToCaret for ProcNode failed');
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debugln(['Proc at ',dbgs(ProcPos)]);
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if not CodeToolBoss.FindReferences(ProcPos.Code,ProcPos.X,ProcPos.Y,Code,
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true,ListOfPCodeXYPosition,RefCache)
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then
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raise Exception.Create('FindReferences failed for '+Code.Filename);
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CodeToolBoss.AddListToTreeOfPCodeXYPosition(ListOfPCodeXYPosition,
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TreeOfPCodeXYPosition,true,false);
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if not CodeToolBoss.ChangeParamList(ProcPos.Code,Changes,ProcPos,
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TreeOfPCodeXYPosition)
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then
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raise Exception.Create('ChangeParamList failed for '+Code.Filename);
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finally
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CodeToolBoss.FreeListOfPCodeXYPosition(ListOfPCodeXYPosition);
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CodeToolBoss.FreeTreeOfPCodeXYPosition(TreeOfPCodeXYPosition);
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RefCache.Free;
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Changes.Clear;
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end;
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// write the new source:
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writeln('-----------------------------------');
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writeln('New source:');
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writeln(Code.Source);
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writeln('-----------------------------------');
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end;
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var
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Changes: TObjectList;
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begin
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CodeToolBoss.SimpleInit(ConfigFilename);
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// load the file
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Filename:='scanexamples/changeparamlist1.pas';
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Filename:=ExpandFileName(SetDirSeparators(Filename));
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Code:=CodeToolBoss.LoadFile(Filename,false,false);
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if Code=nil then
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raise Exception.Create('loading failed: '+Filename);
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Changes:=TObjectList.create(true);
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try
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// Test: add the first parameter to a procedure
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//Changes.Add(TChangeParamListItem.CreateInsertNewParam(0,'','p1','integer'));
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//ChangeProc('DoNoParams',Changes);
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// Test: add another parameter as first to a procedure
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//Changes.Add(TChangeParamListItem.CreateInsertNewParam(0,'','p2','integer'));
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//ChangeProc('DoOneParam(char)',Changes);
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// Test: add another parameter as last to a procedure
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//Changes.Add(TChangeParamListItem.CreateInsertNewParam(1,'','p3','integer'));
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//ChangeProc('DoOneParam(char)',Changes);
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// Test: insert another parameter between two procedure parameters
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Changes.Add(TChangeParamListItem.CreateInsertNewParam(1,'','p3','integer'));
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ChangeProc('DoTwoParams1(,word)',Changes);
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finally
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Changes.Free;
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end;
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// write the new source:
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writeln('-----------------------------------');
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writeln('New source:');
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writeln(Code.Source);
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writeln('-----------------------------------');
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end.
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