- Timestamp:
- Nov 10, 2009, 7:14:14 AM (15 years ago)
- Location:
- branches/Void
- Files:
-
- 5 edited
Legend:
- Unmodified
- Added
- Removed
-
branches/Void/Example.void
r12 r13 1 var 2 Text: string;1 var 2 Text: String; 3 3 A: Integer; 4 4 begin -
branches/Void/UCompilator.pas
r12 r13 76 76 VariableType: string; 77 77 Variable: TVariable; 78 VarType: TType; 78 79 begin 79 80 Parser.ParseNextToken; … … 83 84 repeat 84 85 VariableName := Parser.TokenValue; 85 Parser.ParseNextToken;86 if Parser.TokenType = ttWhiteSpace then Parser.ParseNextToken;87 if (Parser.TokenType <> ttSymbol) and (Parser.TokenValue = ':') then88 DoError('Expected :');89 Parser.ParseNextToken;90 if Parser.TokenType = ttWhiteSpace then Parser.ParseNextToken;91 if Parser.TokenType <> ttIdentifier then DoError('Expected identifier');92 VariableType := Parser.TokenValue;93 94 86 with Model.Module do begin 95 Variable := FindVariableByName(VariableName); 96 if Assigned(Variable) then DoError('Variable ' + VariableName + ' redefined') 97 else begin 98 Variable := TVariable.Create; 99 with Variable do begin 100 Name := VariableName; 101 VarType := VariableType; 87 Variable := FindVariableByName(VariableName); 88 if Assigned(Variable) then DoError('Variable ' + VariableName + ' redefined') 89 else begin 90 Parser.ParseNextToken; 91 if Parser.TokenType = ttWhiteSpace then Parser.ParseNextToken; 92 if (Parser.TokenType <> ttSymbol) and (Parser.TokenValue = ':') then 93 DoError('Expected :'); 94 Parser.ParseNextToken; 95 if Parser.TokenType = ttWhiteSpace then Parser.ParseNextToken; 96 if Parser.TokenType <> ttIdentifier then DoError('Expected identifier'); 97 VariableType := Parser.TokenValue; 98 VarType := FindTypeByName(VariableType); 99 if not Assigned(VarType) then DoError('Undefined type ' + VariableType) 100 else begin 101 Variable := TVariable.Create; 102 with Variable do begin 103 Name := VariableName; 104 end; 105 Variable.VarType := VarType; 106 Variables.Add(Variable); 107 end; 102 108 end; 103 Variables.Add(Variable);104 end;105 109 end; 106 110 -
branches/Void/UModel.pas
r11 r13 9 9 10 10 type 11 TType = class 12 Name: string; 13 BaseType: TType; 14 end; 15 11 16 TVariable = class 12 17 Name: string; 13 VarType: string;18 VarType: TType; 14 19 end; 15 20 … … 36 41 end; 37 42 43 { TModule } 44 38 45 TModule = class 39 46 public 47 Types: TList; 40 48 Variables: TList; 41 49 Procedures: TList; … … 44 52 destructor Destroy; override; 45 53 procedure Clear; 54 function FindTypeByName(AName: string): TType; 46 55 function FindProcedureByName(AName: string): TProcedure; 47 56 function FindVariableByName(AName: string): TVariable; … … 136 145 constructor TModule.Create; 137 146 begin 147 Types := TList.Create; 138 148 Variables := TList.Create; 139 149 BeginEnd := TBeginEnd.Create; … … 145 155 I: Integer; 146 156 begin 157 for I := 0 to Types.Count - 1 do 158 TType(Types[I]).Destroy; 159 Types.Destroy; 147 160 for I := 0 to Variables.Count - 1 do 148 161 TVariable(Variables[I]).Destroy; … … 178 191 procedure TModule.Init; 179 192 begin 193 // System types 194 with TType(Types[Types.Add(TType.Create)]) do begin 195 Name := 'Integer'; 196 end; 197 with TType(Types[Types.Add(TType.Create)]) do begin 198 Name := 'String'; 199 end; 200 with TType(Types[Types.Add(TType.Create)]) do begin 201 Name := 'Char'; 202 end; 203 with TType(Types[Types.Add(TType.Create)]) do begin 204 Name := 'Byte'; 205 end; 206 with TType(Types[Types.Add(TType.Create)]) do begin 207 Name := 'Word'; 208 end; 209 210 // System procedures 180 211 with TProcedure(Procedures[Procedures.Add(TProcedure.Create)]) do begin 181 212 Name := 'WriteLn'; 182 213 end; 183 214 with TProcedure(Procedures[Procedures.Add(TProcedure.Create)]) do begin 184 215 Name := 'Exit'; 185 216 end; … … 200 231 end; 201 232 233 function TModule.FindTypeByName(AName: string): TType; 234 var 235 I: Integer; 236 begin 237 I := 0; 238 while (I < Types.Count) and (TType(Types[I]).Name <> AName) do 239 Inc(I); 240 if I < Types.Count then Result := Types[I] else Result := nil; 241 end; 242 202 243 end. 203 244 -
branches/Void/UOutputGenerator.pas
r11 r13 6 6 7 7 uses 8 Classes, SysUtils, UModel ;8 Classes, SysUtils, UModel, StrUtils; 9 9 10 10 type 11 12 { TOutputGenerator }13 14 11 TOutputGenerator = class 15 12 private 13 IndentCount: Integer; 16 14 Model: TModel; 15 function Indent: string; 17 16 public 18 17 Output: TStringList; … … 22 21 end; 23 22 24 { TPascalGenerator }25 26 23 TPascalGenerator = class(TOutputGenerator) 27 24 procedure Generate(Model: TModel); override; … … 29 26 end; 30 27 31 { TCGenerator }32 33 28 TCGenerator = class(TOutputGenerator) 29 private 30 function ConvertType(Name: string): string; 31 public 34 32 procedure Generate(Model: TModel); override; 35 33 procedure GenerateModule(Module: TModule); … … 39 37 40 38 { TOutputGenerator } 39 40 function TOutputGenerator.Indent: string; 41 begin 42 Result := DupeString(' ', IndentCount); 43 end; 41 44 42 45 procedure TOutputGenerator.Generate(Model: TModel); … … 78 81 // var section 79 82 if Variables.Count > 0 then Output.Add('var'); 83 Inc(IndentCount); 80 84 for I := 0 to Variables.Count - 1 do 81 85 with TVariable(Variables[I]) do 82 Output.Add(' ' + Name + ': ' + VarType + ';'); 86 Output.Add(Indent + Name + ': ' + VarType.Name + ';'); 87 Dec(IndentCount); 83 88 84 89 // Code block 85 90 Output.Add('begin'); 91 Inc(IndentCount); 86 92 for I := 0 to BeginEnd.Commands.Count - 1 do 87 93 with TCommand(BeginEnd.Commands[I]) do begin 88 if Name = 'Assignment' then Output.Add( Parameters[0] + ' := ' + Parameters[1] + ';')94 if Name = 'Assignment' then Output.Add(Indent + Parameters[0] + ' := ' + Parameters[1] + ';') 89 95 else begin 90 96 Row := Name; … … 95 101 Row := Row + '(' + Copy(ParameterText, 1, Length(ParameterText) - 2) + ')'; 96 102 end; 97 Output.Add( Row + ';');103 Output.Add(Indent + Row + ';'); 98 104 end; 99 105 end; 106 Dec(IndentCount); 100 107 Output.Add('end.'); 101 108 end; … … 104 111 { TCGenerator } 105 112 113 function TCGenerator.ConvertType(Name: string): string; 114 begin 115 if Name = 'String' then Result := 'char*' 116 else if Name = 'Byte' then Result := 'unsigned char' 117 else if Name = 'ShortInt' then Result := 'signed char' 118 else if Name = 'Word' then Result := 'unsigned int' 119 else if Name = 'Integer' then Result := 'int' 120 else if Name = 'Real' then Result := 'float' 121 else if Name = 'Double' then Result := 'double' 122 else if Name = 'Char' then Result := 'char' 123 else Result := Name; 124 end; 125 106 126 procedure TCGenerator.Generate(Model: TModel); 107 127 begin 108 128 inherited; 129 IndentCount := 0; 109 130 GenerateModule(Model.Module); 110 131 end; … … 122 143 Output.Add('int main()'); 123 144 Output.Add('{'); 145 Inc(IndentCount); 124 146 125 147 // variable section 126 148 for I := 0 to Variables.Count - 1 do 127 149 with TVariable(Variables[I]) do 128 Output.Add(' ' + VarType + ' ' + Name + ';'); 150 Output.Add(Indent + ' ' + ConvertType(VarType.Name) + ' ' + Name + ';'); 151 if Variables.Count > 0 then Output.Add(''); 129 152 130 153 // Code block 131 154 for I := 0 to BeginEnd.Commands.Count - 1 do 132 155 with TCommand(BeginEnd.Commands[I]) do begin 133 if Name = 'Assignment' then Output.Add( Parameters[0] + ' = ' + Parameters[1] + ';')156 if Name = 'Assignment' then Output.Add(Indent + Parameters[0] + ' = ' + Parameters[1] + ';') 134 157 else begin 135 158 if Name = 'WriteLn' then Row := 'printf' … … 143 166 Row := Row + Copy(ParameterText, 1, Length(ParameterText) - 2); 144 167 end; 145 Output.Add( Row + ');');168 Output.Add(Indent + Row + ');'); 146 169 end; 147 170 end; 171 Dec(IndentCount); 148 172 Output.Add('}'); 149 173 end; -
branches/Void/project1.lpi
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