mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-08-14 10:19:22 +02:00
FPGDBMIDebugger: use parser for pascal expressions
git-svn-id: trunk@43221 -
This commit is contained in:
martin
parent
b69a88bc85
commit
8ae328f260
@ -13,6 +13,19 @@ type
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TFpGDBMIDebugger = class;
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{ TFpGDBMIPascalExpression }
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TFpGDBMIPascalExpression = class(TFpPascalExpression)
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private
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FThreadId: Integer;
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FStackFrame: Integer;
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FDebugger: TFpGDBMIDebugger;
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protected
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function GetDbgTyeForIdentifier(AnIdent: String): TDbgSymbol; override;
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public
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constructor Create(ATextExpression: String; ADebugger: TFpGDBMIDebugger; AThreadId, AStackFrame: Integer);
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end;
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{ TFpGDBPTypeRequestCache }
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TFpGDBPTypeRequestCache = class(TGDBPTypeRequestCache)
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@ -43,7 +56,6 @@ type
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procedure GetCurrentContext(out AThreadId, AStackFrame: Integer);
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function GetLocationForContext(AThreadId, AStackFrame: Integer): TDBGPtr;
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procedure AddToGDBMICache(AThreadId, AStackFrame: Integer; AnIdent: TDbgSymbol);
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function CreateTypeRequestCache: TGDBPTypeRequestCache; override;
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public
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class function Caption: String; override;
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@ -70,7 +82,7 @@ type
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protected
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function FpDebugger: TFpGDBMIDebugger;
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//procedure DoStateChange(const AOldState: TDBGState); override;
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procedure InternalRequestData(AWatchValue: TCurrentWatchValue); override;
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//procedure InternalRequestData(AWatchValue: TCurrentWatchValue); override;
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public
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//constructor Create(const ADebugger: TDebugger);
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//destructor Destroy; override;
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@ -96,6 +108,31 @@ type
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procedure Cancel(const ASource: String); override;
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end;
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{ TFpGDBMIPascalExpression }
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function TFpGDBMIPascalExpression.GetDbgTyeForIdentifier(AnIdent: String): TDbgSymbol;
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var
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Loc: TDBGPtr;
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begin
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Result := nil;
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if FDebugger.HasDwarf then begin
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if AnIdent <> '' then begin
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Loc := FDebugger.GetLocationForContext(FThreadId, FStackFrame);
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if (Loc <> 0) then
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Result := FDebugger.FDwarfInfo.FindIdentifier(Loc, AnIdent);
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end;
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end;
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end;
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constructor TFpGDBMIPascalExpression.Create(ATextExpression: String;
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ADebugger: TFpGDBMIDebugger; AThreadId, AStackFrame: Integer);
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begin
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FDebugger := ADebugger;
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FThreadId := AStackFrame;
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FStackFrame := AStackFrame;
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inherited Create(ATextExpression);
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end;
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{ TFpGDBPTypeRequestCache }
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constructor TFpGDBPTypeRequestCache.Create(ADebugger: TFpGDBMIDebugger);
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@ -107,40 +144,123 @@ end;
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function TFpGDBPTypeRequestCache.IndexOf(AThreadId, AStackFrame: Integer;
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ARequest: TGDBPTypeRequest): Integer;
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const
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GdbCmdPType = 'ptype ';
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GdbCmdWhatIs = 'whatis ';
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procedure MaybeAdd(AType: TGDBCommandRequestType; AQuery, AAnswer: String);
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var
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AReq: TGDBPTypeRequest;
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begin
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AReq.ReqType := AType;
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AReq.Request := AQuery;
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if IndexOf(AThreadId, AStackFrame, AReq) < 0 then begin
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AReq.Result := ParseTypeFromGdb(AAnswer);
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Add(AThreadId, AStackFrame, AReq);
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debugln(['TFpGDBMIDebugger.AddToGDBMICache ', AReq.Request, ' T:', AThreadId, ' S:',AStackFrame, ' >> ', AAnswer]);
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end;
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end;
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procedure AddType(ASourceExpr: string; ATypeIdent: TDbgDwarfTypeIdentifier; AnIsPointer: Boolean);
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var
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TypeName: String;
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IsPointerPointer: Boolean;
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IsPointerType: Boolean;
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begin
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if (ASourceExpr = '') or (ATypeIdent = nil) then exit;
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IsPointerType := ATypeIdent.IsPointerType;
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if IsPointerType then begin
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ATypeIdent := ATypeIdent.PointedToType;
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if ATypeIdent = nil then exit;
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IsPointerPointer := AnIsPointer or ATypeIdent.IsPointerType;
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while (ATypeIdent <> nil) and ATypeIdent.IsPointerType do
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ATypeIdent := ATypeIdent.PointedToType;
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if ATypeIdent = nil then exit;
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end;
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TypeName := ATypeIdent.IdentifierName;
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if ATypeIdent.IsBaseType then begin
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if IsPointerType then begin
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MaybeAdd(gcrtPType, GdbCmdPType + ASourceExpr, Format('type = ^%s', [TypeName]));
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MaybeAdd(gcrtPType, GdbCmdWhatIs + ASourceExpr, Format('type = ^%s', [TypeName]));
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ASourceExpr := GDBMIMaybeApplyBracketsToExpr(ASourceExpr);
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if IsPointerPointer then begin
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MaybeAdd(gcrtPType, GdbCmdPType + ASourceExpr + '^', Format('type = ^%s', [TypeName]));
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MaybeAdd(gcrtPType, GdbCmdWhatIs + ASourceExpr + '^', Format('type = ^%s', [TypeName]));
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end
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else begin
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MaybeAdd(gcrtPType, GdbCmdPType + ASourceExpr + '^', Format('type = %s', [TypeName]));
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MaybeAdd(gcrtPType, GdbCmdWhatIs + ASourceExpr + '^', Format('type = %s', [TypeName]));
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end;
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end
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else begin
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MaybeAdd(gcrtPType, GdbCmdPType + ASourceExpr, Format('type = %s', [TypeName]));
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MaybeAdd(gcrtPType, GdbCmdWhatIs + ASourceExpr, Format('type = %s', [TypeName]));
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end;
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end;
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end;
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var
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IdentName: String;
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Loc: TDBGPtr;
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Ident: TDbgSymbol;
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PasExpr: TFpGDBMIPascalExpression;
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PasType: TFpPasExprType;
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TypeIdent: TDbgDwarfTypeIdentifier;
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begin
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Result := inherited IndexOf(AThreadId, AStackFrame, ARequest);
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if (Result > 0) or FInIndexOf then
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if (Result >= 0) or FInIndexOf then
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exit;
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FInIndexOf := True;
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PasExpr := nil;
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try
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if FDebugger.HasDwarf and (ARequest.ReqType = gcrtPType) then begin
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DebugLn('############### '+ARequest.Request);
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if copy(ARequest.Request, 1, 6) = 'ptype ' then
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IdentName := trim(copy(ARequest.Request, 7, length(ARequest.Request)))
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else
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if copy(ARequest.Request, 1, 7) = 'whatis ' then
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IdentName := trim(copy(ARequest.Request, 8, length(ARequest.Request)));
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if IdentName <> '' then begin
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Loc := FDebugger.GetLocationForContext(AThreadId, AStackFrame);
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if (Loc <> 0) then begin
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Ident := FDebugger.FDwarfInfo.FindIdentifier(Loc, IdentName);
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if Ident <> nil then begin
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FDebugger.AddToGDBMICache(AThreadId, AStackFrame, Ident);
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PasExpr := TFpGDBMIPascalExpression.Create(IdentName, FDebugger, AThreadId, AStackFrame);
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PasType := PasExpr.ResultType;
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case PasType.Kind of
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ptkValueDbgType: begin
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AddType(IdentName, PasType.DbgType, False);
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Result := inherited IndexOf(AThreadId, AStackFrame, ARequest);
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end;
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ptkPointerToValueDbgType: begin
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AddType(IdentName, PasType.DbgType, True);
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Result := inherited IndexOf(AThreadId, AStackFrame, ARequest);
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end;
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ReleaseRefAndNil(Ident);
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end;
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end;
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end;
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finally
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PasExpr.Free;
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FInIndexOf := False;
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end;
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(*
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ptype i
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~"type = LONGINT\n"
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whatis i
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~"type = LONGINT\n"
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ptype @i
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~"type = ^LONGINT\n"
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ptype (@i)^
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~"type = LONGINT\n"
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whatis @i
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~"type = ^LONGINT\n"
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*)
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end;
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{ TFPGDBMIWatches }
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@ -150,27 +270,6 @@ begin
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Result := TFpGDBMIDebugger(Debugger);
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end;
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procedure TFPGDBMIWatches.InternalRequestData(AWatchValue: TCurrentWatchValue);
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var
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Loc: TDBGPtr;
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Ident: TDbgSymbol;
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begin
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//if FpDebugger.HasDwarf then begin
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// Loc := FpDebugger.GetLocationForContext(AWatchValue.ThreadId, AWatchValue.StackFrame);
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//
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// if (Loc <> 0) then begin
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// Ident := FpDebugger.FDwarfInfo.FindIdentifier(Loc, AWatchValue.Watch.Expression);
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//
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// if Ident <> nil then
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// FpDebugger.AddToGDBMICache(AWatchValue.ThreadId, AWatchValue.StackFrame, Ident);
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//
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// ReleaseRefAndNil(Ident);
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// end;
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//end;
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inherited InternalRequestData(AWatchValue);
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end;
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{ TFpGDBMILineInfo }
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function TFpGDBMILineInfo.FpDebugger: TFpGDBMIDebugger;
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@ -296,18 +395,7 @@ var
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CurThread, CurStack: Integer;
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begin
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if HasDwarf and (ACommand = dcEvaluate) then begin
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//GetCurrentContext(CurThread, CurStack);
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//Loc := GetLocationForContext(CurThread, CurStack);
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//
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//if (Loc <> 0) then begin
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// Ident := FDwarfInfo.FindIdentifier(Loc, String(AParams[0].VAnsiString));
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//
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// if Ident <> nil then
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// AddToGDBMICache(CurThread, CurStack, Ident);
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//
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// ReleaseRefAndNil(Ident);
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//end;
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// String(AParams[0].VAnsiString)
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// //EvalFlags := [];
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// //if high(AParams) >= 3 then
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// // EvalFlags := TDBGEvaluateFlags(AParams[3].VInteger);
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@ -322,22 +410,17 @@ end;
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procedure TFpGDBMIDebugger.GetCurrentContext(out AThreadId, AStackFrame: Integer);
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begin
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if (AThreadId <= 0) and CurrentThreadIdValid then begin
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if CurrentThreadIdValid then begin
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AThreadId := CurrentThreadId;
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AStackFrame := 0;
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if CurrentStackFrameValid then
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AStackFrame := CurrentStackFrame
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else
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AStackFrame := 0;
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end
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else
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if (AThreadId <= 0) and (not CurrentThreadIdValid) then begin
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else begin
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AThreadId := 1;
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AStackFrame := 0;
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end
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else
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if (AStackFrame < 0) and (CurrentStackFrameValid) then begin
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AStackFrame := CurrentStackFrame;
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end
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else
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if (AStackFrame < 0) and (not CurrentStackFrameValid) then begin
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AStackFrame := 0;
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end;
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end;
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@ -389,79 +472,6 @@ type
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property InformationEntry;
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end;
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procedure TFpGDBMIDebugger.AddToGDBMICache(AThreadId, AStackFrame: Integer;
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AnIdent: TDbgSymbol);
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const
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GdbCmdPType = 'ptype ';
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GdbCmdWhatIs = 'whatis ';
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procedure MaybeAdd(AType: TGDBCommandRequestType; AQuery, AAnswer: String);
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var
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AReq: TGDBPTypeRequest;
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begin
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AReq.ReqType := AType;
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AReq.Request := AQuery;
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if TypeRequestCache.IndexOf(AThreadId, AStackFrame, AReq) < 0 then begin
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AReq.Result := ParseTypeFromGdb(AAnswer);
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TypeRequestCache.Add(AThreadId, AStackFrame, AReq);
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debugln(['TFpGDBMIDebugger.AddToGDBMICache ', AReq.Request, ' T:', AThreadId, ' S:',AStackFrame, ' >> ', AAnswer]);
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end;
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end;
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var
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TypeIdent: TDbgDwarfTypeIdentifier;
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VarName, TypeName: String;
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AReq: TGDBPTypeRequest;
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IsPointer: Boolean;
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begin
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(* Simulate gdb answers *)
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//TypeRequestCache
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if AnIdent is TDbgDwarfValueIdentifier then begin
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VarName := TDbgDwarfValueIdentifier(AnIdent).IdentifierName;
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TypeIdent := TDbgDwarfValueIdentifier(AnIdent).TypeInfo;
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if TypeIdent = nil then exit;
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TypeName := TypeIdent.IdentifierName;
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IsPointer := TypeIdent.IsPointerType;
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while (TypeIdent <> nil) and TypeIdent.IsPointerType do
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TypeIdent := TypeIdent.PointedToType;
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if TypeIdent = nil then exit;
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if TGDBMIDwarfTypeIdentifier(TypeIdent).IsBaseType then begin
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if IsPointer then begin
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MaybeAdd(gcrtPType, GdbCmdPType + VarName, Format('type = ^%s', [TypeName]));
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MaybeAdd(gcrtPType, GdbCmdWhatIs + VarName, Format('type = ^%s', [TypeName]));
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MaybeAdd(gcrtPType, GdbCmdPType + GDBMIMaybeApplyBracketsToExpr(VarName) + '^',
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Format('type = %s', [TypeName]));
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MaybeAdd(gcrtPType, GdbCmdWhatIs + GDBMIMaybeApplyBracketsToExpr(VarName) + '^',
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Format('type = %s', [TypeName]));
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end
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else begin
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MaybeAdd(gcrtPType, GdbCmdPType + VarName, Format('type = %s', [TypeName]));
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MaybeAdd(gcrtPType, GdbCmdWhatIs + VarName, Format('type = %s', [TypeName]));
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end;
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end;
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end;
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(*
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ptype i
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~"type = LONGINT\n"
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whatis i
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~"type = LONGINT\n"
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ptype @i
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~"type = ^LONGINT\n"
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ptype (@i)^
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~"type = LONGINT\n"
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whatis @i
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~"type = ^LONGINT\n"
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*)
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end;
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function TFpGDBMIDebugger.CreateTypeRequestCache: TGDBPTypeRequestCache;
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begin
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Result := TFpGDBPTypeRequestCache.Create(Self);
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