mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-05-01 16:43:43 +02:00
621 lines
17 KiB
ObjectPascal
621 lines
17 KiB
ObjectPascal
unit FpPascalBuilder;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, DbgIntfBaseTypes, FpDbgInfo, FpdMemoryTools, FpErrorMessages,
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LazLoggerBase;
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type
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TTypeNameFlag = (
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tnfOnlyDeclared, // do not return a substitute with ^ symbol
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tnfIncludeOneRef // If it is a pointer, and the pointed-to name is known, return ^TXxx
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// without tnfOnlyDeclared, may return ^^^TXxx if needed
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);
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TTypeNameFlags = set of TTypeNameFlag;
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TTypeDeclarationFlag = (
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tdfNoFirstLineIndent,
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tdfIncludeVarName, // like i: Integer
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tdfSkipClassBody, // shorten class
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tdfSkipRecordBody, // shorten class
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tdfDynArrayWithPointer, // TODO, temp, act like gdb
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tdfStopAfterPointer
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);
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TTypeDeclarationFlags = set of TTypeDeclarationFlag;
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TPrintPasValFlag = (
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ppvSkipClassBody, ppvSkipRecordBody
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);
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TPrintPasValFlags = set of TPrintPasValFlag;
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function GetTypeName(out ATypeName: String; ADbgSymbol: TDbgSymbol; AFlags: TTypeNameFlags = []): Boolean;
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function GetTypeAsDeclaration(out ATypeDeclaration: String; ADbgSymbol: TDbgSymbol;
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AFlags: TTypeDeclarationFlags = []; AnIndent: Integer = 0): Boolean;
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function PrintPasValue(out APrintedValue: String; AResValue: TDbgSymbolValue;
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AnAddrSize: Integer; AFlags: TPrintPasValFlags = []): Boolean;
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implementation
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function GetTypeName(out ATypeName: String; ADbgSymbol: TDbgSymbol;
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AFlags: TTypeNameFlags): Boolean;
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var
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s: String;
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begin
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ATypeName := '';
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Result := ADbgSymbol <> nil;
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if not Result then
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exit;
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if ADbgSymbol.SymbolType = stValue then begin
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ADbgSymbol := ADbgSymbol.TypeInfo;
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Result := ADbgSymbol <> nil;
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if not Result then
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exit;
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end;
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ATypeName := ADbgSymbol.Name;
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Result := ATypeName <> '';
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if (tnfIncludeOneRef in AFlags) or
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((not Result) and (not (tnfOnlyDeclared in AFlags)))
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then begin
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ATypeName := '^';
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while ADbgSymbol.Kind = skPointer do begin
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ADbgSymbol := ADbgSymbol.TypeInfo;
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s := ADbgSymbol.Name;
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if s <> '' then begin
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ATypeName := ATypeName + s;
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Result := True;
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exit;
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end;
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if (tnfOnlyDeclared in AFlags) then // only one level
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exit;
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ATypeName := ATypeName + '^';
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end;
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ATypeName := '';
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Result := False;
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end;
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end;
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function GetTypeAsDeclaration(out ATypeDeclaration: String; ADbgSymbol: TDbgSymbol;
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AFlags: TTypeDeclarationFlags; AnIndent: Integer): Boolean;
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var
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IndentString: String;
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function GetIndent: String;
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begin
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if (IndentString = '') and (AnIndent > 0) then
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IndentString := StringOfChar(' ', AnIndent);
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Result := IndentString;
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end;
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function NeedBracket(S: String): Boolean;
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var
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i, l: Integer;
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begin
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l := 0;
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i := length(s);
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while (i > 0) do begin
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case s[i] of
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'a'..'z', 'A'..'Z', '0'..'9', '_', '$', '^': ;
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'(': dec(l);
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')': inc(l);
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else
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if l = 0 then break;
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end;
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dec(i);
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end;
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Result := i > 0;
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end;
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Function MembersAsGdbText(out AText: String; WithVisibilty: Boolean; AFlags: TTypeDeclarationFlags = []): Boolean;
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var
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CurVis: TDbgSymbolMemberVisibility;
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procedure AddVisibility(AVis: TDbgSymbolMemberVisibility; AFirst: Boolean);
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begin
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if not (WithVisibilty and ((CurVis <> AVis) or AFirst)) then
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exit;
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CurVis := AVis;
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case AVis of
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svPrivate: AText := AText + GetIndent + ' private' + LineEnding;
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svProtected: AText := AText + GetIndent + ' protected' + LineEnding;
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svPublic: AText := AText + GetIndent + ' public' + LineEnding;
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end;
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end;
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var
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c, i: Integer;
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m: TDbgSymbol;
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s: String;
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begin
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Result := True;
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AText := '';
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c := ADbgSymbol.MemberCount;
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i := 0;
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while (i < c) and Result do begin
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m := ADbgSymbol.Member[i];
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AddVisibility(m.MemberVisibility, i= 0);
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Result := GetTypeAsDeclaration(s, m, [tdfIncludeVarName] + AFlags, AnIndent + 4);
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if Result then
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AText := AText + GetIndent + s + ';' + LineEnding;
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inc(i);
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end;
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end;
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function GetPointerType(out ADeclaration: String): Boolean;
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var
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s: String;
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begin
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s := '';
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while ADbgSymbol.Kind = skPointer do begin
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ADbgSymbol := ADbgSymbol.TypeInfo;
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s := s + '^';
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end;
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if not(tdfStopAfterPointer in AFlags) then begin
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Result := GetTypeAsDeclaration(ADeclaration, ADbgSymbol, AFlags);
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if not Result then
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Result := GetTypeName(ADeclaration, ADbgSymbol, []);
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end
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else begin
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Result := GetTypeName(ADeclaration, ADbgSymbol, []);
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if not Result then
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Result := GetTypeAsDeclaration(ADeclaration, ADbgSymbol, AFlags);
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end;
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if NeedBracket(ADeclaration)
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then ADeclaration := s + '(' + ADeclaration + ')'
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else ADeclaration := s + ADeclaration;
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end;
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function GetBaseType(out ADeclaration: String): Boolean;
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var
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s1, s2: String;
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begin
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if sfSubRange in ADbgSymbol.Flags then begin
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case ADbgSymbol.Kind of
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// TODO: check bound are in size
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skInteger: begin
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Result := ADbgSymbol.HasBounds;
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if Result then ADeclaration := Format('%d..%d', [ADbgSymbol.OrdLowBound, ADbgSymbol.OrdHighBound]);
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end;
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skCardinal: begin
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Result := ADbgSymbol.HasBounds;
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if Result then ADeclaration := Format('%u..%u', [QWord(ADbgSymbol.OrdLowBound), QWord(ADbgSymbol.OrdHighBound)]);
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end;
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skChar: begin
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Result := ADbgSymbol.HasBounds;
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if (ADbgSymbol.OrdLowBound >= 32) and (ADbgSymbol.OrdLowBound <= 126)
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then s1 := '''' + chr(ADbgSymbol.OrdLowBound) + ''''
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else s1 := '#'+IntToStr(ADbgSymbol.OrdLowBound);
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if (ADbgSymbol.OrdHighBound >= 32) and (ADbgSymbol.OrdHighBound <= 126)
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then s2 := '''' + chr(ADbgSymbol.OrdHighBound) + ''''
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else s2 := '#'+IntToStr(ADbgSymbol.OrdHighBound);
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if Result then ADeclaration := Format('%s..%s', [s1, s2]);
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end;
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else
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Result := False; // not sure how to show a subrange of skFloat, skBoolean, :
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end;
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end
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else
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Result := GetTypeName(ADeclaration, ADbgSymbol, []);
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end;
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function GetFunctionType(out ADeclaration: String): Boolean;
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var
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s: String;
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begin
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// Todo param
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GetTypeAsDeclaration(s, ADbgSymbol.TypeInfo, AFlags);
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ADeclaration := 'function ' + ADbgSymbol.Name + ' () : ' + s + '';
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if sfVirtual in ADbgSymbol.Flags then ADeclaration := ADeclaration + '; virtual';
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Result := true;
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end;
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function GetProcedureType(out ADeclaration: String): Boolean;
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begin
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// Todo param
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ADeclaration := 'procedure ' + ADbgSymbol.Name + ' ()';
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if sfVirtual in ADbgSymbol.Flags then ADeclaration := ADeclaration + '; virtual';
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Result := true;
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end;
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function GetClassType(out ADeclaration: String): Boolean;
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var
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s, s2: String;
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begin
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Result := tdfSkipClassBody in AFlags;
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if Result then begin
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GetTypeName(s, ADbgSymbol);
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ADeclaration := s + ' {=class}';
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exit;
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end;
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Result := MembersAsGdbText(s, True, [tdfSkipClassBody]);
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if not GetTypeName(s2, ADbgSymbol.TypeInfo) then
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s2 := '';
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if Result then
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ADeclaration := Format('class(%s)%s%s%send',
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[s2, LineEnding, s, GetIndent]);
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end;
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function GetRecordType(out ADeclaration: String): Boolean;
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var
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s: String;
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begin
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if tdfSkipRecordBody in AFlags then begin
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Result := True;
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if GetTypeName(s, ADbgSymbol) then
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ADeclaration := s + ' {=record}'
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else
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ADeclaration := Format('record {...};%s%send', [LineEnding, GetIndent]);
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exit;
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end;
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Result := MembersAsGdbText(s, False);
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if Result then
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ADeclaration := Format('record%s%s%send', [LineEnding, s, GetIndent]);
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end;
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function GetEnumType(out ADeclaration: String): Boolean;
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var
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i, j, val: Integer;
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m: TDbgSymbol;
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begin
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// TODO assigned value (a,b:=3,...)
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Result := True;
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ADeclaration := '(';
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j := 0;
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for i := 0 to ADbgSymbol.MemberCount - 1 do begin
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m := ADbgSymbol.Member[i];
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if i > 0 then ADeclaration := ADeclaration + ', ';
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ADeclaration := ADeclaration + m.Name;
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if m.HasOrdinalValue then begin
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val := m.OrdinalValue;
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if j <> val then begin
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ADeclaration := ADeclaration + ' := ' + IntToStr(val);
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j := val;
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continue;
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end;
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end;
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inc(j);
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end;
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ADeclaration := ADeclaration + ')'
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end;
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function GetSetType(out ADeclaration: String): Boolean;
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var
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t: TDbgSymbol;
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s: String;
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begin
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// TODO assigned value (a,b:=3,...)
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t := ADbgSymbol.TypeInfo;
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Result := t <> nil;
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if not Result then exit;
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case t.Kind of
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skInteger: begin
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Result := t.HasBounds;
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ADeclaration := format('set of %d..%d', [t.OrdLowBound, t.OrdHighBound]);
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end;
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skCardinal: begin
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Result := t.HasBounds;
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ADeclaration := format('set of %u..%u', [QWord(t.OrdLowBound), QWord(t.OrdHighBound)]);
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end;
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skEnum: begin
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if t.Name <> '' then begin
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Result := True;
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s := t.Name;
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end
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else
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Result := GetTypeAsDeclaration(s, t, AFlags);
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ADeclaration := 'set of ' + s;
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end;
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else
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Result := False;
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end;
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end;
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function GetArrayType(out ADeclaration: String): Boolean;
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var
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t: TDbgSymbol;
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s: String;
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i: Integer;
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begin
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// TODO assigned value (a,b:=3,...)
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t := ADbgSymbol.TypeInfo;
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Result := (t <> nil);
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if not Result then exit;
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s := t.Name;
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if s = '' then begin
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Result := GetTypeAsDeclaration(s, t, [tdfNoFirstLineIndent, tdfStopAfterPointer] + AFlags, AnIndent + 4); // no class ?
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if not Result then exit;
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end;
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if sfDynArray in ADbgSymbol.Flags then begin //supprts only one level
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ADeclaration := 'array of ' + s;
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if tdfDynArrayWithPointer in AFlags then
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ADeclaration := '^(' + ADeclaration + ')';
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end
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else begin
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ADeclaration := 'array [';
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for i := 0 to ADbgSymbol.MemberCount - 1 do begin
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if i > 0 then
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ADeclaration := ADeclaration + ', ';
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t := ADbgSymbol.Member[i];
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if t.Kind = skCardinal
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then ADeclaration := ADeclaration + Format('%u..%u', [QWord(t.OrdLowBound), QWord(t.OrdHighBound)])
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else ADeclaration := ADeclaration + Format('%d..%d', [t.OrdLowBound, t.OrdHighBound]);
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end;
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ADeclaration := ADeclaration + '] of ' + s;
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end;
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end;
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var
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VarName: String;
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begin
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Result := ADbgSymbol <> nil;
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if not Result then
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exit;
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VarName := '';
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if (ADbgSymbol.SymbolType = stValue) and
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not((ADbgSymbol.Kind = skProcedure) or (ADbgSymbol.Kind = skFunction))
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then begin
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if tdfIncludeVarName in AFlags then
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VarName := ADbgSymbol.Name;
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ADbgSymbol := ADbgSymbol.TypeInfo;
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Result := ADbgSymbol <> nil;
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if not Result then
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exit;
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end;
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case ADbgSymbol.Kind of
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skPointer: Result := GetPointerType(ATypeDeclaration);
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skInteger, skCardinal, skBoolean, skChar, skFloat:
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Result := GetBaseType(ATypeDeclaration);
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skFunction: Result := GetFunctionType(ATypeDeclaration);
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skProcedure: Result := GetProcedureType(ATypeDeclaration);
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skClass: Result := GetClassType(ATypeDeclaration);
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skRecord: Result := GetRecordType(ATypeDeclaration);
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skEnum: Result := GetEnumType(ATypeDeclaration);
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skset: Result := GetSetType(ATypeDeclaration);
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skArray: Result := GetArrayType(ATypeDeclaration);
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end;
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if VarName <> '' then
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ATypeDeclaration := VarName + ': ' + ATypeDeclaration;
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if (AnIndent <> 0) and not(tdfNoFirstLineIndent in AFlags) then
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ATypeDeclaration := GetIndent + ATypeDeclaration;
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end;
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function PrintPasValue(out APrintedValue: String; AResValue: TDbgSymbolValue;
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AnAddrSize: Integer; AFlags: TPrintPasValFlags): Boolean;
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function ResTypeName: String;
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begin
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if not((AResValue.TypeInfo<> nil) and
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GetTypeName(Result, AResValue.TypeInfo, []))
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then
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Result := '';
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end;
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procedure DoPointer;
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var
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s: String;
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v: QWord;
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begin
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s := ResTypeName;
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v := AResValue.AsCardinal;
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if v = 0 then
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APrintedValue := 'nil'
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else
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APrintedValue := '$'+IntToHex(AResValue.AsCardinal, AnAddrSize);
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if s <> '' then
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APrintedValue := s + '(' + APrintedValue + ')';
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if svfString in AResValue.FieldFlags then
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APrintedValue := APrintedValue + ' ' + AResValue.AsString;
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Result := True;
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end;
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procedure DoInt;
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begin
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APrintedValue := IntToStr(AResValue.AsInteger);
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Result := True;
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end;
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procedure DoCardinal;
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begin
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APrintedValue := IntToStr(AResValue.AsCardinal);
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Result := True;
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end;
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procedure DoBool;
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begin
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if AResValue.AsBool then begin
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APrintedValue := 'True';
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if AResValue.AsCardinal <> 1 then
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APrintedValue := APrintedValue + '(' + IntToStr(AResValue.AsCardinal) + ')';
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end
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else
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APrintedValue := 'False';
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Result := True;
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end;
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procedure DoChar;
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begin
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APrintedValue := '''' + AResValue.AsString + ''''; // Todo escape
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Result := True;
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end;
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procedure DoFloat;
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begin
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APrintedValue := FloatToStr(AResValue.AsFloat);
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Result := True;
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end;
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procedure DoEnum;
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var
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s: String;
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begin
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APrintedValue := AResValue.AsString;
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if APrintedValue = '' then begin
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s := ResTypeName;
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APrintedValue := s + '(' + IntToStr(AResValue.AsCardinal) + ')';
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end;
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Result := True;
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end;
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|
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procedure DoEnumVal;
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begin
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APrintedValue := AResValue.AsString;
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if APrintedValue <> '' then
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APrintedValue := APrintedValue + ':=';
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APrintedValue := APrintedValue+ IntToStr(AResValue.AsCardinal);
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Result := True;
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end;
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|
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procedure DoSet;
|
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var
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s: String;
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i: Integer;
|
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m: TDbgSymbolValue;
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begin
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APrintedValue := '';
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for i := 0 to AResValue.MemberCount-1 do begin
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m := AResValue.Member[i];
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if svfIdentifier in m.FieldFlags then
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s := m.AsString
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else
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if svfOrdinal in m.FieldFlags then // set of byte
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s := IntToStr(m.AsCardinal)
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else
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Continue; // Todo: missing member
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if APrintedValue = ''
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then APrintedValue := s
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else APrintedValue := APrintedValue + ', ' + s;
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end;
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APrintedValue := '[' + APrintedValue + ']';
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Result := True;
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end;
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|
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procedure DoStructure;
|
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var
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s, s2: String;
|
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i: Integer;
|
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m: TDbgSymbolValue;
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fl: TPrintPasValFlags;
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begin
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if (AResValue.Kind = skClass) and (AResValue.AsCardinal = 0) then begin
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APrintedValue := 'nil';
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Result := True;
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exit;
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end;
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|
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if ( (AResValue.Kind in [skClass, skObject]) and (ppvSkipClassBody in AFlags) ) or
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( (AResValue.Kind in [skRecord]) and (ppvSkipRecordBody in AFlags) )
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then begin
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APrintedValue := ResTypeName;
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case AResValue.Kind of
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skRecord: APrintedValue := '{record:}' + APrintedValue;
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skObject: APrintedValue := '{object:}' + APrintedValue;
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skClass: APrintedValue := '{class:}' + APrintedValue + '(' + '$'+IntToHex(AResValue.AsCardinal, AnAddrSize) + ')';
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|
end;
|
|
Result := True;
|
|
exit;
|
|
end;
|
|
|
|
s2 := LineEnding;
|
|
if AFlags <> [] then s2 := ' ';;
|
|
fl := [ppvSkipClassBody];
|
|
//if ppvSkipClassBody in AFlags then
|
|
// fl := [ppvSkipClassBody, ppvSkipRecordBody];
|
|
|
|
APrintedValue := '';
|
|
for i := 0 to AResValue.MemberCount-1 do begin
|
|
m := AResValue.Member[i];
|
|
if (m = nil) or (m.Kind in [skProcedure, skFunction]) then
|
|
continue;
|
|
s := '';
|
|
PrintPasValue(s, m, AnAddrSize, fl);
|
|
if m.DbgSymbol <> nil then
|
|
s := m.DbgSymbol.Name + ' = ' + s;
|
|
if APrintedValue = ''
|
|
then APrintedValue := s
|
|
else APrintedValue := APrintedValue + '; ' + s2 + s;
|
|
end;
|
|
APrintedValue := '(' + APrintedValue + ')';
|
|
Result := True;
|
|
end;
|
|
|
|
procedure DoArray;
|
|
var
|
|
s: String;
|
|
i: Integer;
|
|
m: TDbgSymbolValue;
|
|
c: Integer;
|
|
begin
|
|
APrintedValue := '';
|
|
c := AResValue.MemberCount;
|
|
if c > 500 then c := 500;
|
|
// TODO: low-ord to high ord
|
|
for i := 0 to c - 1 do begin
|
|
m := AResValue.Member[i];
|
|
if m <> nil then
|
|
PrintPasValue(s, m, AnAddrSize, AFlags)
|
|
else
|
|
s := '{error}';
|
|
if APrintedValue = ''
|
|
then APrintedValue := s
|
|
else APrintedValue := APrintedValue + ', ' + s;
|
|
end;
|
|
if c < AResValue.MemberCount then
|
|
APrintedValue := APrintedValue + ', ...';
|
|
APrintedValue := '(' + APrintedValue + ')';
|
|
Result := True;
|
|
end;
|
|
|
|
begin
|
|
Result := False;
|
|
case AResValue.Kind of
|
|
skUnit: ;
|
|
skProcedure: ;
|
|
skFunction: ;
|
|
skPointer: DoPointer;
|
|
skInteger: DoInt;
|
|
skCardinal: DoCardinal;
|
|
skBoolean: DoBool;
|
|
skChar: DoChar;
|
|
skFloat: DoFloat;
|
|
skString: ;
|
|
skAnsiString: ;
|
|
skCurrency: ;
|
|
skVariant: ;
|
|
skWideString: ;
|
|
skEnum: DoEnum;
|
|
skEnumValue: DoEnumVal;
|
|
skSet: DoSet;
|
|
skRecord: DoStructure;
|
|
skObject: DoStructure;
|
|
skClass: DoStructure;
|
|
skInterface: ;
|
|
skArray: DoArray;
|
|
end;
|
|
|
|
if IsFpError(AResValue.LastError) then
|
|
APrintedValue := FpErrorHandler.ErrorAsString(AResValue.LastError) + ' ' + APrintedValue;
|
|
|
|
end;
|
|
|
|
|
|
end.
|
|
|