- Timestamp:
- Dec 25, 2017, 11:54:43 AM (7 years ago)
- Location:
- branches/generator
- Files:
-
- 4 added
- 2 edited
Legend:
- Unmodified
- Added
- Removed
-
branches/generator/Forms/UFormMain.lfm
r131 r132 29 29 Height = 28 30 30 Top = 5 31 Width = 1 7131 Width = 169 32 32 Align = alNone 33 33 AutoSize = True … … 42 42 Transparent = True 43 43 object ToolButton2: TToolButton 44 Left = 14 244 Left = 140 45 45 Top = 0 46 46 Action = ABuildCompiler … … 56 56 Action = AProjectOpen 57 57 DropdownMenu = PopupMenuOpenRecent 58 Style = tbs ButtonDrop58 Style = tbsDropDown 59 59 end 60 60 object ToolButton5: TToolButton 61 Left = 7 661 Left = 74 62 62 Top = 0 63 63 Action = AProjectSave 64 64 end 65 65 object ToolButton6: TToolButton 66 Left = 13 466 Left = 132 67 67 Height = 28 68 68 Top = 0 … … 70 70 end 71 71 object ToolButton1: TToolButton 72 Left = 10 572 Left = 103 73 73 Top = 0 74 74 Action = AGrammerSettings -
branches/generator/UBuilder.pas
r129 r132 6 6 7 7 uses 8 Classes, SysUtils, UGrammer ;8 Classes, SysUtils, UGrammer, StrUtils; 9 9 10 10 type … … 14 14 TBuilder = class 15 15 private 16 function BuildTokenizerItems(SourceFile: TStrings; Items: TRuleItems): string; 17 function GetItemString(Item: TRuleItem; Required: Boolean): string; 16 function GetItemString(Item: TRuleItem; Required: Boolean; IndentLevel: Integer): string; 18 17 function StringText(Text: string): string; 19 18 procedure BuildMain(FileName: string); 20 19 procedure BuildParser(FileName: string); 20 function BuildParserItems(Items: TRuleItems; IndentLevel: Integer): string; 21 21 procedure BuildSource(FileName: string); 22 22 procedure BuildTokenizer(FileName: string); 23 function BuildTokenizerItems(SourceFile: TStrings; Items: TRuleItems): string; 23 24 public 24 25 Grammer: TGrammer; … … 32 33 implementation 33 34 34 function TBuilder.GetItemString(Item: TRuleItem; Required: Boolean ): string;35 function TBuilder.GetItemString(Item: TRuleItem; Required: Boolean; IndentLevel: Integer): string; 35 36 begin 36 37 Result := ''; … … 42 43 StringText(Item.TerminalFrom) + ''', ''' + 43 44 StringText(Item.TerminalTo) + ''', ' + BooleanText[Required] + ')'; 44 //ritSubItems: Line := 'Parse +'; 45 ritSubItems: begin 46 Result := DupeString(' ', IndentLevel) + 'begin' + LineEnding; 47 Result := Result + BuildParserItems(Item.SubItems, IndentLevel + 1); 48 Result := Result + DupeString(' ', IndentLevel) + 'end'; 49 end; 45 50 end; 46 51 end; … … 55 60 ParserFile: TStringList; 56 61 Rule: TRule; 57 I: Integer;58 Line: string;59 Item: TRuleItem;60 Required: Boolean;61 62 begin 62 63 ParserFile := TStringList.Create; … … 84 85 Add(' function Parse' + Rule.Name + '(Required: Boolean = False): Boolean;'); 85 86 Add(' constructor Create;'); 86 Add(' constructor Destroy; override;');87 Add(' destructor Destroy; override;'); 87 88 Add(' end;'); 88 89 Add(''); … … 93 94 Add('begin'); 94 95 Add(' Position := 1;'); 95 Add(' Parser.Tokenizer := TTokenizer.Create;');96 Add('end;'); 97 Add(''); 98 Add(' constructor TParser.Destroy;');99 Add('begin'); 100 Add(' FreeAndNil( Parser);');96 Add(' Tokenizer := TTokenizer.Create;'); 97 Add('end;'); 98 Add(''); 99 Add('destructor TParser.Destroy;'); 100 Add('begin'); 101 Add(' FreeAndNil(Tokenizer);'); 101 102 Add('end;'); 102 103 Add(''); … … 141 142 Add('begin'); 142 143 Add(' Result := True;'); 143 I := 0; 144 for Item in Rule.Items do begin 145 Required := not Item.Optional; 146 Line := ' '; 147 case Rule.Items.RuleType of 148 rtOr: begin 149 if I > 0 then Line := Line + 'else '; 150 Line := Line + 'if ' + GetItemString(Item, False); 151 Line := Line + ' then Exit'; 152 end; 153 rtAnd: begin 154 Line := Line + 'Result := Result and '; 155 if Item.Optional then Line := Line + 'True;' + LineEnding; 156 if Item.Repetitive then begin 157 if not Item.Optional then 158 Line := Line + ' ' + GetItemString(Item, Required) + ';' + LineEnding; 159 Line := Line + ' repeat' + LineEnding + ' if not '; 160 Required := False; 161 end; 162 Line := Line + GetItemString(Item, Required); 163 if Item.Repetitive then Line := Line + ' then Break;' + LineEnding + ' until False'; 164 Line := Line + ';' + LineEnding + ' if not Result then Exit;'; 165 end; 166 end; 167 Add(Line); 168 Inc(I); 169 end; 170 case Rule.Items.RuleType of 171 rtOr: begin 172 Add(' else begin'); 173 Add(' Error(''Unexpected token'');'); 174 Add(' Result := False;'); 175 Add(' end;'); 176 end; 177 //rtAnd: Add(' if not Result then ShowError('''')'); 178 end; 144 Text := Text + BuildParserItems(Rule.Items, 1); 179 145 Add('end;'); 180 146 Add(''); … … 185 151 end; 186 152 FreeAndNil(ParserFile); 153 end; 154 155 function TBuilder.BuildParserItems(Items: TRuleItems; IndentLevel: Integer): string; 156 var 157 I: Integer; 158 Item: TRuleItem; 159 Required: Boolean; 160 Line: string; 161 begin 162 Result := ''; 163 I := 0; 164 for Item in Items do begin 165 Required := not Item.Optional; 166 Line := ''; 167 case Items.RuleType of 168 rtOr: begin 169 Line := Line + DupeString(' ', IndentLevel); 170 if I > 0 then Line := Line + 'else '; 171 Line := Line + 'if ' + GetItemString(Item, False, IndentLevel) + 172 ' then Exit'; 173 end; 174 rtAnd: begin 175 if not Item.Optional and not (Item.RuleItemType = ritSubItems) then 176 Line := Line + DupeString(' ', IndentLevel) + 'Result := Result and '; 177 if Item.Repetitive then begin 178 if not Item.Optional then 179 Line := Line + DupeString(' ', IndentLevel) + GetItemString(Item, Required, IndentLevel) + ';' + LineEnding; 180 Line := Line + DupeString(' ', IndentLevel) + 'repeat' + LineEnding + DupeString(' ', IndentLevel) + 'if not '; 181 Required := False; 182 end; 183 Line := Line + GetItemString(Item, Required, IndentLevel); 184 if Item.Repetitive then 185 Line := Line + ' then Break;' + LineEnding + 186 DupeString(' ', IndentLevel) + 'until False'; 187 Line := Line + ';' + LineEnding + 188 DupeString(' ', IndentLevel) + 'if not Result then Exit;'; 189 end; 190 end; 191 Result := Result + Line + LineEnding; 192 Inc(I); 193 end; 194 case Items.RuleType of 195 rtOr: begin 196 Result := Result + DupeString(' ', IndentLevel) + 'else begin' + LineEnding; 197 Result := Result + DupeString(' ', IndentLevel) + ' Error(''Unexpected token'');' + LineEnding; 198 Result := Result + DupeString(' ', IndentLevel) + ' Result := False;' + LineEnding; 199 Result := Result + DupeString(' ', IndentLevel) + 'end;' + LineEnding; 200 end; 201 end; 187 202 end; 188 203
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