| 1 | unit UTargetFPC;
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| 2 |
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| 3 | {$mode Delphi}{$H+}
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| 4 |
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| 5 | interface
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| 6 |
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| 7 | uses
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| 8 | Classes, SysUtils, UTarget, UBFTarget;
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| 9 |
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| 10 | type
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| 11 |
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| 12 | { TTargetFPC }
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| 13 |
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| 14 | TTargetFPC = class(TBFTarget)
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| 15 | private
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| 16 | function GetMemoryCell: string;
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| 17 | public
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| 18 | constructor Create; override;
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| 19 | procedure Compile; override;
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| 20 | procedure Run; override;
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| 21 | end;
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| 22 |
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| 23 | implementation
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| 24 |
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| 25 | { TTargetFPC }
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| 26 |
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| 27 | constructor TTargetFPC.Create;
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| 28 | begin
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| 29 | inherited Create;
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| 30 | Name := 'FPC';
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| 31 | SourceExtension := '.pas';
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| 32 | ImageIndex := 22;
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| 33 | Capabilities := [tcCompile, tcRun];
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| 34 | {$IFDEF Linux}
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| 35 | CompiledExtension := '';
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| 36 | CompilerPath := '/usr/bin/fpc';
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| 37 | RunExtension := '';
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| 38 | {$ENDIF}
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| 39 | {$IFDEF Windows}
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| 40 | CompiledExtension := '.exe';
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| 41 | CompilerPath := 'fpc.exe';
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| 42 | RunExtension := '';
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| 43 | {$ENDIF}
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| 44 | end;
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| 45 |
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| 46 | function TTargetFPC.GetMemoryCell: string;
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| 47 | begin
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| 48 | Result := 'Memory[Pos';
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| 49 | if FProgram[FProgramIndex].RelIndex > 0 then
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| 50 | Result := Result + ' + ' + IntToStr(FProgram[FProgramIndex].RelIndex)
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| 51 | else if FProgram[FProgramIndex].RelIndex < 0 then
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| 52 | Result := Result + ' - ' + IntToStr(Abs(FProgram[FProgramIndex].RelIndex));
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| 53 | Result := Result + ']';
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| 54 | end;
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| 55 |
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| 56 | procedure TTargetFPC.Compile;
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| 57 | begin
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| 58 | inherited;
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| 59 | Indent := 0;
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| 60 | FTargetCode := '';
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| 61 |
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| 62 | AddLine('program ' + ProgramName + ';');
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| 63 | AddLine('var');
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| 64 | AddLine(' Memory: array[0..' + IntToStr(MemorySize) + '] of Byte;');
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| 65 | AddLine(' Pos: Integer;');
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| 66 | AddLine(' ReadChar: Char;');
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| 67 | AddLine('begin');
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| 68 | Inc(Indent);
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| 69 | AddLine('Pos := 0;');
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| 70 | FProgramIndex := 0;
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| 71 | while (FProgramIndex < Length(FProgram)) do begin
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| 72 | case FProgram[FProgramIndex].Command of
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| 73 | cmPointerInc: AddLine('Inc(Pos, ' + IntToStr(FProgram[FProgramIndex].Parameter) + ');');
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| 74 | cmPointerDec: AddLine('Dec(Pos, ' + IntToStr(FProgram[FProgramIndex].Parameter) + ');');
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| 75 | cmInc: AddLine(GetMemoryCell + ' := ' + GetMemoryCell + ' + ' + IntToStr(FProgram[FProgramIndex].Parameter) + ';');
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| 76 | cmDec: AddLine(GetMemoryCell + ' := ' + GetMemoryCell + ' - ' + IntToStr(FProgram[FProgramIndex].Parameter) + ';');
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| 77 | cmSet: AddLine(GetMemoryCell + ' := ' + IntToStr(FProgram[FProgramIndex].Parameter) + ';');
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| 78 | cmMultipy: AddLine(GetMemoryCell + ' := ' + GetMemoryCell + ' + Memory[Pos] * ' + IntToStr(FProgram[FProgramIndex].Parameter) + ';');
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| 79 | cmOutput: AddLine('Write(Chr(' + GetMemoryCell + '));');
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| 80 | cmInput: AddLine('Read(ReadChar); ' + GetMemoryCell + ' := Ord(ReadChar);');
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| 81 | cmLoopStart: begin
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| 82 | AddLine('while ' + GetMemoryCell + ' <> 0 do begin');
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| 83 | Inc(Indent);
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| 84 | end;
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| 85 | cmLoopEnd: begin
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| 86 | Dec(Indent);
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| 87 | AddLine('end;');
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| 88 | end;
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| 89 | end;
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| 90 | Inc(FProgramIndex);
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| 91 | end;
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| 92 | Dec(Indent);
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| 93 | AddLine('end.');
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| 94 |
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| 95 | CompileToFile;
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| 96 | end;
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| 97 |
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| 98 | procedure TTargetFPC.Run;
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| 99 | begin
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| 100 | inherited Run;
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| 101 | RunFromFile;
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| 102 | end;
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| 103 |
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| 104 | end.
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| 105 |
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