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CodeTreeController.pas
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CodeTreeController.pas
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unit CodeTreeController;
interface
uses
Classes, Types, Controls, Generics.Collections, VirtualTrees, PascalUnit,
CodeElement, ProcDeclaration;
type
TCodeType = (ctNone, ctSection, ctType, ctVar, ctUses, ctProcedure, ctFunction);
TCodeNodeData = record
Caption: string;
Line: Integer;
CodeType: TCodeType;
end;
PCodeNodeData = ^TCodeNodeData;
TCodeTreeController = class
private
FTree: TVirtualStringTree;
FUses: PVirtualNode;
FTypes: PVirtualNode;
FVars: PVirtualNode;
FProcedures: PVirtualNode;
procedure CreateSectionNodes();
procedure BuildCodeTreeFromElements(AElements: TObjectList<TCodeElement>);
function BuildParameterPostFix(AProc: TProcDeclaration): string;
//event handlers
procedure HandleGetImageIndex(Sender: TBaseVirtualTree; Node: PVirtualNode; Kind: TVTImageKind; Column: TColumnIndex;
var Ghosted: Boolean; var ImageIndex: Integer);
procedure HandleCodeTreeGetText(Sender: TBaseVirtualTree;
Node: PVirtualNode; Column: TColumnIndex; TextType: TVSTTextType;
var CellText: string);
function GetImages: TImageList;
procedure SetImages(const Value: TImageList);
public
constructor Create(ATree: TVirtualStringTree);
procedure BuildCodeTreeFromUnit(AUnit: TPascalUnit);
property Images: TImageList read GetImages write SetImages;
end;
implementation
uses
VarDeclaration, DataType;
{ TFTreeController }
procedure TCodeTreeController.BuildCodeTreeFromElements(
AElements: TObjectList<TCodeElement>);
var
LNode: PVirtualNode;
LData: PCodeNodeData;
LElement: TCodeElement;
LPreFix: string;
begin
for LElement in AElements do
begin
LNode := nil;
if LElement is TVarDeclaration then
begin
LNode := FTree.AddChild(FVars);
PCodeNodeData(FTree.GetNodeData(LNode)).Caption := LElement.Name + ': ' + TVarDeclaration(LElement).DataType.Name;
PCodeNodeData(FTree.GetNodeData(LNode)).CodeType := ctVar;
end;
if (LElement is TProcDeclaration) and (not TProcDeclaration(LElement).IsDummy) then
begin
LNode := FTree.AddChild(FProcedures);
LData := PCodeNodeData(FTree.GetNodeData(LNode));
LData.Caption := LElement.Name + BuildParameterPostFix(TProcDeclaration(LElement));
if TProcDeclaration(LElement).IsFunction then
begin
LData.CodeType := ctFunction;
end
else
begin
LData.CodeType := ctProcedure;
end;
end;
if (LElement is TDataType) and (TDataType(LElement) <> TDataType(LElement).BaseType) then
begin
LNode := FTree.AddChild(FTypes);
LPreFix := '';
if TDataType(LElement).RawType = rtPointer then
begin
LPreFix := '^';
end;
if TDataType(LElement).RawType = rtArray then
begin
LPreFix := 'array of ';
end;
PCodeNodeData(FTree.GetNodeData(LNode)).Caption := LElement.Name + ': ' + LPreFix + TDataType(LElement).BaseType.Name;
PCodeNodeData(FTree.GetNodeData(LNode)).CodeType := ctType;
end;
if Assigned(LNode) then
begin
PCodeNodeData(FTree.GetNodeData(LNode)).Line := LElement.Line;
end;
end;
end;
procedure TCodeTreeController.BuildCodeTreeFromUnit(AUnit: TPascalUnit);
var
LNode: PVirtualNode;
LName: string;
begin
FTree.BeginUpdate;
FTree.Clear;
CreateSectionNodes();
for LName in AUnit.UsedUnits do
begin
LNode := FTree.AddChild(FUses);
PCodeNodeData(FTree.GetNodeData(LNode)).Caption := LName;
PCodeNodeData(FTree.GetNodeData(LNode)).Line := -1;
PCodeNodeData(FTree.GetNodeData(LNode)).CodeType := ctUses;
end;
BuildCodeTreeFromElements(AUnit.SubElements);
BuildCodeTreeFromElements(AUnit.ImplementationSection);
FTree.FullExpand(nil);
FTree.EndUpdate;
end;
function TCodeTreeController.BuildParameterPostFix(
AProc: TProcDeclaration): string;
var
i: Integer;
LParameter: TVarDeclaration;
begin
Result := '(';
if AProc.Parameters.Count > 0 then
begin
for i := 0 to AProc.Parameters.Count - 1 do
begin
LParameter := TVarDeclaration(AProc.Parameters[i]);
Result := Result + LParameter.Name + ': ' + LParameter.DataType.Name;
if i < AProc.Parameters.Count - 1 then
begin
Result := Result + '; ';
end;
end;
end;
Result := Result + ')';
if AProc.IsFunction then
begin
Result := Result + ': ' + AProc.ResultType.Name;
end;
end;
constructor TCodeTreeController.Create(ATree: TVirtualStringTree);
begin
FTree := ATree;
FTree.NodeDataSize := SizeOf(TCodeNodeData);
FTree.OnGetImageIndex := HandleGetImageIndex;
FTree.OnGetText := HandleCodeTreeGetText;
end;
procedure TCodeTreeController.CreateSectionNodes;
begin
FUses := FTree.AddChild(nil);
PCodeNodeData(FTree.GetNodeData(FUses)).Caption := 'Uses';
PCodeNodeData(FTree.GetNodeData(FUses)).Line := -1;
PCodeNodeData(FTree.GetNodeData(FUses)).CodeType := ctSection;
FVars := FTree.AddChild(nil);
FTypes := FTree.AddChild(nil);
PCodeNodeData(FTree.GetNodeData(FTypes)).Caption := 'Types';
PCodeNodeData(FTree.GetNodeData(FTypes)).Line := -1;
PCodeNodeData(FTree.GetNodeData(FTypes)).CodeType := ctSection;
PCodeNodeData(FTree.GetNodeData(FVars)).Caption := 'Vars';
PCodeNodeData(FTree.GetNodeData(FVars)).Line := -1;
PCodeNodeData(FTree.GetNodeData(FVars)).CodeType := ctSection;
FProcedures := FTree.AddChild(nil);
PCodeNodeData(FTree.GetNodeData(FProcedures)).Caption := 'Procedures';
PCodeNodeData(FTree.GetNodeData(FProcedures)).Line := -1;
PCodeNodeData(FTree.GetNodeData(FProcedures)).CodeType := ctSection;
end;
function TCodeTreeController.GetImages: TImageList;
begin
Result := TImageList(FTree.Images);
end;
procedure TCodeTreeController.HandleCodeTreeGetText(Sender: TBaseVirtualTree;
Node: PVirtualNode; Column: TColumnIndex; TextType: TVSTTextType;
var CellText: string);
begin
CellText := PCodeNodeData(Sender.GetNodeData(Node)).Caption;
end;
procedure TCodeTreeController.HandleGetImageIndex(Sender: TBaseVirtualTree;
Node: PVirtualNode; Kind: TVTImageKind; Column: TColumnIndex;
var Ghosted: Boolean; var ImageIndex: Integer);
begin
if Kind in [ikNormal, ikSelected] then
begin
case PCodeNodeData(Sender.GetNodeData(Node)).CodeType of
ctSection: ImageIndex := 0;
ctType: ImageIndex := 1;
ctVar: ImageIndex := 2;
ctUses: ImageIndex := 3;
ctProcedure: ImageIndex := 4;
ctFunction: ImageIndex := 5;
else
begin
ImageIndex := -1;
end;
end;
end
else
begin
ImageIndex := -1;
end;
end;
procedure TCodeTreeController.SetImages(const Value: TImageList);
begin
FTree.Images := Value;
end;
end.