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https://gitlab.com/freepascal.org/lazarus/lazarus.git
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112 lines
3.6 KiB
ObjectPascal
112 lines
3.6 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 of how to convert c header files to pascal interfaces.
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Usage:
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h2pastest [filename.h]
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*)
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program H2PasTest;
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{$mode objfpc}{$H+}
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uses
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Classes, SysUtils, CodeCache, CodeToolManager, FileProcs,
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CodeTree, NonPascalCodeTools;
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var
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Filename: string;
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Code: TCodeBuffer;
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Tree: TCompilerDirectivesTree;
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Changed: Boolean;
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Pass: Integer;
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i: Integer;
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p: String;
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Undefines: TStringList;
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Defines: TStringList;
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begin
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Undefines:=nil;
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Defines:=nil;
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Filename:=SetDirSeparators('scanexamples/missingh2pasdirectives.pas');
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// parse parameters
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for i:=1 to ParamCount do begin
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p:=ParamStr(i);
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if p='' then continue;
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if p[1]='-' then begin
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if Undefines=nil then Undefines:=TStringList.Create;
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Undefines.Add(copy(p,2,length(p)));
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end
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else if p[1]='+' then begin
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if Defines=nil then Defines:=TStringList.Create;
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Defines.Add(copy(p,2,length(p)));
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end else
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Filename:=p;
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end;
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if Undefines<>nil then begin
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writeln('Undefines: ');
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writeln(Undefines.Text);
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end;
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if Defines<>nil then begin
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writeln('Defines: ');
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writeln(Defines.Text);
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end;
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// load the file
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Filename:=ExpandFileName(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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// parse the directives
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Tree:=TCompilerDirectivesTree.Create;
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Tree.Parse(Code,CodeToolBoss.GetNestedCommentsFlagForFile(Code.Filename));
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writeln('-----------------------------------');
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writeln('h2pas created these directives:');
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Tree.WriteDebugReport;
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// add missing directives
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Changed:=false;
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Tree.FixMissingH2PasDirectives(Changed);
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writeln('-----------------------------------');
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writeln('after adding the missing directives:');
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Tree.WriteDebugReport;
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// reduce directives
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Pass:=0;
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repeat
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inc(Pass);
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Changed:=false;
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Tree.ReduceCompilerDirectives(Undefines,Defines,Changed);
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if not Changed then break;
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writeln('-----------------------------------');
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writeln('after reduce number ',Pass,':');
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Tree.WriteDebugReport;
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until false;
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writeln('-----------------------------------');
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writeln('Source:');
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writeln(Code.Source);
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end.
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