Files
befpc/bepascal/bepascal/hookgen/hookgen.pp

705 lines
20 KiB
ObjectPascal

program hookgen;
{$H+} // use AnsiStrings
uses
Classes, SysUtils, xmlread, DOM;
const
Eol = #10;
StartExternalC = '#if defined(__cplusplus)' + Eol +
'extern "C" {' + Eol+
'#endif' + Eol;
EndExternalC = '#if defined(__cplusplus)' + Eol +
'}' + Eol +
'#endif';
type
TSourceWriter = class(TObject)
private
FH : TStringList;
FCpp : TStringList;
FPas : TStringList;
FTypMap : TStringList;
FFileName : string;
public
constructor Create(FileName : string); virtual;
destructor Destroy; override;
property H : TStringList read FH;
property Cpp : TStringList read FCpp;
property Pas : TStringList read FPas;
property TypMap : TStringList read FTypMap;
end;
constructor TSourceWriter.Create(FileName : string);
begin
inherited Create;
FFileName := FileName;
FH := TStringList.Create;
FCpp := TStringList.Create;
FPas := TStringList.Create;
FTypMap := TStringList.Create;
FTypMap.LoadFromFile('typemap.txt');
end;
destructor TSourceWriter.Destroy;
begin
// .h not used yet
// FH.SaveToFile(FFileName + '.h');
FH.Free;
FCpp.SaveToFile(FFileName + '.cpp');
FCpp.Free;
FPas.SaveToFile(FFileName + '.pas');
FPas.Free;
FTypMap.Free;
inherited;
end;
type
TClasse = class;
TFunction = class(TObject)
private
FName : string;
FParent : TClasse;
FParams : TStringList;
FResultType : string;
function CommaIfNotEmpty(s : string) : string;
public
constructor Create(Parent : TClasse; FunctionName : string); virtual;
destructor Destroy; override;
function GetPascalParams(TypMap : TStringList) : string;
function GetCppParams(StartWithComma : boolean) : string;
function GetCppParamNames(StartWithComma : boolean) : string;
function ProcOrFunc(TypMap : TStringList) : string;
function PascalMethDecl(TypMap : TStringList) : string;
function PascalMethImpl(TypMap : TStringList) : string;
function PascalResultType(TypMap : TStringList) : string;
function PascalHookVar(TypMap : TStringList) : string;
function PascalInit(TypMap : TStringList) : string;
function PascalHookImpl(TypMap : TStringList) : string;
function PascalHookDecl(TypMap : TStringList) : string;
function CppTypedef : string;
function CppVarDecl : string;
function CppClassDecl : string;
function CppHookImpl : string;
property Name : string read FName write FName;
property Params : TStringList read FParams write FParams;
property ResultType : string read FResultType write FResultType;
end;
TClasse = class(TObject)
private
FTypeName : string;
FAncestor : string;
FHookFunctions : TStringList;
function GetName : string;
function GetAncestorName : string;
public
constructor Create(ClasseName : string); virtual;
destructor Destroy; override;
property TypeName : string read FTypeName write FTypeName;
property Name : string read GetName;
property Ancestor : string read FAncestor write FAncestor;
property AncestorName : string read GetAncestorName;
property HookFunctions : TStringList read FHookFunctions write FHookFunctions;
function PascalClasse(TypMap : TStringList) : string;
function PascalHookVar(TypMap : TStringList) : string;
function PascalHookDecl(TypMap : TStringList) : string;
function PascalHookImpl(TypMap : TStringList) : string;
function PascalInit(TypMap : TStringList) : string;
function PascalMethImpl(TypMap : TStringList) : string;
function CppTypedef : string;
function CppVarDecl : string;
function CppClassDecl : string;
function CppHookImpl : string;
end;
// TFunction ---------------------------------------------------------
constructor TFunction.Create(Parent : TClasse; FunctionName : string);
begin
inherited Create;
FName := FunctionName;
FParams := TStringList.Create;
FParent := Parent;
end;
destructor TFunction.Destroy;
begin
FParams.Free;
inherited;
end;
function TFunction.CommaIfNotEmpty(s : string) : string;
begin
if s <> '' then
Result := '; '
else
Result := '';
end;
function TFunction.GetPascalParams(TypMap : TStringList) : string;
function FormatParams : string;
var
i : integer;
begin
Result := '';
for i := 0 to FParams.Count - 1 do
begin
if i > 0 then
Result := Result + '; ';
if FParams.Names[i] <> '' then
Result := Result + Format('%s : %s', [FParams.Names[i], TypMap.Values[FParams.Values[FParams.Names[i]]] ]);
end;
end;
begin
if FParams.Count = 0 then
Result := ''
else
begin
Result := Format('%s', [FormatParams]);
end;
end;
function TFunction.ProcOrFunc(TypMap : TStringList) : string;
begin
if ResultType = 'void' then
Result := 'procedure'
else
Result := 'function';
end;
function TFunction.PascalResultType(TypMap : TStringList) : string;
begin
if ResultType = 'void' then
Result := ''
else
Result := ' : ' + TypMap.Values[ResultType];
end;
function TFunction.PascalMethDecl(TypMap : TStringList) : string;
begin
Result := Format(' %s %s(%s)%s; virtual;', [ProcOrFunc(TypMap),
Name, GetPascalParams(TypMap),
PascalResultType(TypMap)]);
end;
function TFunction.PascalMethImpl(TypMap : TStringList) : string;
begin
Result := Format('%s T%s.%s(%s)%s;' + Eol, [ProcOrFunc(TypMap),
FParent.Name, Name, GetPascalParams(TypMap),
PascalResultType(TypMap)]);
Result := Result + 'begin' + Eol;
Result := Result + 'end;' + Eol;
end;
function TFunction.PascalHookVar(TypMap : TStringList) : string;
begin
Result := Format(' %s_%s_hook : Pointer; cvar; external;', [FParent.Name, Name]);
end;
function TFunction.PascalInit(TypMap : TStringList) : string;
begin
Result := Format(' %s_%s_hook := @%s_%s_hook_func;', [FParent.Name, Name, FParent.Name, Name]);
end;
function TFunction.PascalHookDecl(TypMap : TStringList) : string;
begin
Result := '';
Result := Format(' %s %s_%s_hook(%s : %s%s%s)%s;',
[ProcOrFunc(TypMap), FParent.TypeName, Name, FParent.Name, 'T' + FParent.Name,
CommaIfNotEmpty(GetPascalParams(TypMap)), GetPascalParams(TypMap),
PascalResultType(TypMap)]) +
Format(' cdecl; external BePascalLibName name ''%s_%s'';',
[FParent.TypeName, Name]);
end;
function TFunction.PascalHookImpl(TypMap : TStringList) : string;
var
Indent : integer;
function Indentation : string;
var
i : integer;
begin
for i := 0 to Indent - 1 do
Result := Result + ' ';
end;
var
i : integer;
s : string;
VarTypName : string;
VarList : TStringList;
aParamList : TStringList;
begin
VarList := TStringList.Create;
aParamList := TStringList.Create;
try
Indent := 1;
Result := Format('%s %s_%s_hook_func(%s : %s%s%s)%s; cdecl;',
[ProcOrFunc(TypMap), FParent.Name, Name,
FParent.Name, 'T' + FParent.Name,
CommaIfNotEmpty(GetPascalParams(TypMap)), GetPascalParams(TypMap),
PascalResultType(TypMap)]) + Eol;
Result := Result + 'var' + Eol + '%s';
Result := Result + 'begin' + Eol;
for i := 0 to FParams.Count - 1 do
begin
s := FParams.Values[FParams.Names[i]];
Delete(s, 2, Length(s) - 1);
if (FParams[i] <> 'void') and (s = 'B') then
begin
VarTypName := FParams.Values[FParams.Names[i]];
VarList.Add(Format(' a%s : %s;', [FParams.Names[i], TypMap.Values[VarTypName]]));
aParamList.Add('a' + FParams.Names[i]);
Result := Result + Format('%sa%s := %s.Wrap(%s);' + Eol + '%stry' + Eol,
[Indentation, FParams.Names[i],
TypMap.Values[VarTypName], FParams.Names[i],
Indentation]);
Inc(Indent);
end;
end;
Result := Result + Format('%sif %s <> nil then', [Indentation, FParent.Name]) + Eol;
Result := Result + Format('%s %s.%s(%s);', [Indentation, FParent.Name, Name, '%s']) + Eol;
for i := 0 to FParams.Count - 1 do
begin
s := FParams.Values[FParams.Names[i]];
Delete(s, 2, Length(s) - 1);
if (FParams[i] <> 'void') and (s = 'B') then
begin
Dec(Indent);
VarTypName := FParams.Values[FParams.Names[i]];
Result := Result + Indentation + 'finally' + Eol;
Result := Result + Format(' %sa%s.UnWrap;' + Eol,
[Indentation, FParams.Names[i]]);
Result := Result + Indentation + 'end;' + Eol;
end;
end;
Result := Result + 'end;' + Eol;
if aParamList.Count = 0 then
s := ''
else
s := aParamList.CommaText;
Result := Format(Result, [VarList.Text, s]);
finally
aParamList.Free;
VarList.Free;
end;
end;
function TFunction.GetCppParams(StartWithComma : boolean) : string;
function FormatParams : string;
var
i : integer;
begin
Result := '';
for i := 0 to FParams.Count - 1 do
begin
if (i > 0) then
Result := Result + ', ';
if FParams.Names[i] <> '' then
Result := Result + Format('%s %s', [FParams.Values[FParams.Names[i]], FParams.Names[i] ]);
end;
end;
begin
if FParams.Count = 0 then
Result := ''
else
begin
if (FormatParams <> '') and StartWithComma then
Result := Format(', %s', [FormatParams])
else if FormatParams <> '' then
Result := Format('%s', [FormatParams])
else if StartWithComma then
Result := ''
else
Result := 'void';
end;
end;
function TFunction.GetCppParamNames(StartWithComma : boolean) : string;
function FormatParamNames : string;
var
i : integer;
begin
Result := '';
for i := 0 to FParams.Count - 1 do
begin
if (i > 0) then
Result := Result + ', ';
if FParams.Names[i] <> '' then
Result := Result + Format('%s', [FParams.Names[i] ]);
end;
end;
begin
if FParams.Count = 0 then
Result := ''
else
begin
if (FormatParamNames <> '') and StartWithComma then
Result := Format(', %s', [FormatParamNames])
else if FormatParamNames <> '' then
Result := Format('%s', [FormatParamNames])
else if StartWithComma then
Result := ''
else
Result := 'void';
end;
end;
function TFunction.CppTypedef : string;
begin
Result := Format('typedef %s (*%s_%s_hook) (TPasObject PasObject%s);',
[ResultType, FParent.TypeName, Name, GetCppParams(True)]);
end;
function TFunction.CppVarDecl : string;
begin
Result := Format('%s_%s_hook %s_%s_hook;', [FParent.TypeName, Name, FParent.Name, Name]);
end;
function TFunction.CppClassDecl : string;
begin
Result := Format(' virtual %s %s(%s);', [ResultType, Name, GetCppParams(False)]);
end;
function TFunction.CppHookImpl : string;
begin
Result := Format('%s BP%s::%s(%s)',
[ResultType, FParent.Name, Name, GetCppParams(False)]) + Eol;
Result := Result + '{' + Eol;
if ResultType <> 'void' then
Result := Result + Format(' return %s_%s_hook(GetPasObject()%s);',
[FParent.Name, Name, GetCppParamNames(True)])
else
Result := Result + Format(' %s_%s_hook(GetPasObject()%s);',
[FParent.Name, Name, GetCppParamNames(True)]);
Result := Result + Eol + '}' + Eol;
end;
// TClasse -------------------------------------
constructor TClasse.Create(ClasseName : string);
begin
inherited Create;
FTypeName := ClasseName;
FHookFunctions := TStringList.Create;
end;
destructor TClasse.Destroy;
var
i : integer;
begin
for i := 0 to FHookFunctions.Count - 1 do
FHookFunctions.Objects[i].Free;
FHookFunctions.Free;
inherited;
end;
function TClasse.GetName : string;
begin
Result := TypeName;
// Delete the first letter in the C++ type name
Delete(Result, 1, 1);
end;
function TClasse.GetAncestorName : string;
begin
Result := Ancestor;
// Delete the first letter in the C++ type name
Delete(Result, 1, 1);
end;
function TClasse.PascalClasse(TypMap : TStringList) : string;
var
i : integer;
begin
// We add ' *' to the ancestor to find the corresponding type in the type map
Result := Format(' T%s = class(%s)', [Name, TypMap.Values[Self.Ancestor + ' *']]);
Result := Result + Eol + ' // Hook functions';
for i := 0 to HookFunctions.Count - 1 do
begin
Result := Result + Eol + TFunction(Self.HookFunctions.Objects[i]).PascalMethDecl(TypMap);
end;
Result := Result + Eol + ' end;';
WriteLn(Result);
end;
function TClasse.PascalHookVar(TypMap : TStringList) : string;
var
i : integer;
begin
Result := 'var';
for i := 0 to HookFunctions.Count - 1 do
begin
Result := Result + Eol + TFunction(Self.HookFunctions.Objects[i]).PascalHookVar(TypMap);
end;
WriteLn(Result);
end;
function TClasse.PascalInit(TypMap : TStringList) : string;
var
i : integer;
begin
Result := 'initialization' + Eol;
for i := 0 to HookFunctions.Count - 1 do
begin
Result := Result + TFunction(Self.HookFunctions.Objects[i]).PascalInit(TypMap) + Eol;
end;
WriteLn(Result);
end;
function TClasse.PascalHookDecl(TypMap : TStringList) : string;
var
i : integer;
begin
Result := 'var' + Eol;
for i := 0 to HookFunctions.Count - 1 do
begin
Result := Result + TFunction(Self.HookFunctions.Objects[i]).PascalHookDecl(TypMap) + Eol;
end;
end;
function TClasse.PascalHookImpl(TypMap : TStringList) : string;
var
i : integer;
begin
Result := '';
for i := 0 to HookFunctions.Count - 1 do
begin
Result := Result + TFunction(Self.HookFunctions.Objects[i]).PascalHookImpl(TypMap) + Eol;
end;
end;
function TClasse.PascalMethImpl(TypMap : TStringList) : string;
var
i : integer;
begin
Result := '';
for i := 0 to HookFunctions.Count - 1 do
begin
Result := Result + TFunction(Self.HookFunctions.Objects[i]).PascalMethImpl(TypMap) + Eol;
end;
end;
function TClasse.CppTypedef : string;
var
i : integer;
begin
Result := '';
for i := 0 to HookFunctions.Count - 1 do
begin
Result := Result + TFunction(Self.HookFunctions.Objects[i]).CppTypedef + Eol;
end;
end;
function TClasse.CppVarDecl : string;
var
i : integer;
begin
Result := '';
for i := 0 to HookFunctions.Count - 1 do
begin
Result := Result + TFunction(Self.HookFunctions.Objects[i]).CppVarDecl + Eol;
end;
end;
function TClasse.CppClassDecl : string;
var
i : integer;
begin
Result := Format('class BP%s : public %s, public BP%s',
[Name, TypeName, AncestorName]) + Eol;
Result := Result + '{' + Eol;
Result := Result + ' public:' + Eol;
Result := Result + ' // <BView_Constructor>' + Eol;
for i := 0 to HookFunctions.Count - 1 do
begin
Result := Result + TFunction(Self.HookFunctions.Objects[i]).CppClassDecl + Eol;
end;
Result := Result + ' private:' + Eol;
Result := Result + '}' + Eol;
end;
function TClasse.CppHookImpl : string;
var
i : integer;
begin
Result := '';
for i := 0 to HookFunctions.Count - 1 do
begin
Result := Result + TFunction(Self.HookFunctions.Objects[i]).CppHookImpl + Eol;
end;
end;
//****************************************************************************************
procedure NodeInfo(Node : TDOMNode);
begin
WriteLn(Node.NodeName + ',' + Node.NodeValue + ',' + IntToStr(Node.NodeType));
end;
function HandleParams(Node : TDOMNode; Parent : TClasse) : TFunction;
var
paramtmp : TDOMNode;
begin
Result := TFunction.Create(Parent, Node.Attributes.GetNamedItem('NAME').NodeValue);
paramtmp := Node.FirstChild.FirstChild;
Result.Params.Values[paramtmp.Attributes.GetNamedItem('NAME').NodeValue] := paramtmp.Attributes.GetNamedItem('TYPE').NodeValue;
while paramtmp.NextSibling <> nil do
begin
paramtmp := paramtmp.NextSibling;
Result.Params.Values[paramtmp.Attributes.GetNamedItem('NAME').NodeValue] := paramtmp.Attributes.GetNamedItem('TYPE').NodeValue;
end;
Result.ResultType := Node.FindNode('RESULT').Attributes.GetNamedItem('TYPE').NodeValue;
WriteLn('FunctionName : ' + Result.Name);
WriteLn(Result.Params.Text);
WriteLn('Result = ' + Result.ResultType);
WriteLn('');
end;
function HandleClasse(Node : TDOMNode) : TClasse;
var
hooktmp : TDOMNode;
begin
Result := TClasse.Create(Node.Attributes.GetNamedItem('NAME').NodeValue);
if Node.Attributes.GetNamedItem('ANCESTOR') <> nil then
Result.Ancestor := Node.Attributes.GetNamedItem('ANCESTOR').NodeValue;
hooktmp := Node.FirstChild.FirstChild;
Result.HookFunctions.AddObject(hooktmp.Attributes.GetNamedItem('NAME').NodeValue, HandleParams(hooktmp, Result));
while hooktmp.NextSibling <> nil do
begin
hooktmp := hooktmp.NextSibling;
Result.HookFunctions.AddObject(hooktmp.Attributes.GetNamedItem('NAME').NodeValue, HandleParams(hooktmp, Result));
end;
WriteLn('ClasseName : ' + Result.TypeName);
WriteLn(Result.HookFunctions.Text);
end;
procedure LoadParams(ListeClasses : TStringList);
var
i : integer;
begin
if ParamCount > 0 then
begin
for i := 0 to ParamCount do
begin
ListeClasses.Add(Paramstr(i));
end;
end;
end;
procedure LoadClassesList(ClassesList : TStringList);
var
ADoc : TXMLDocument;
tmp : TDOMNode;
classe : TClasse;
begin
ReadXMLFile(ADoc, 'hooks.xml');
try
NodeInfo(ADoc);
// root -> BEOSAPI
NodeInfo(ADoc.DocumentElement);
// -> CLASSES
NodeInfo(ADoc.DocumentElement.FirstChild);
// -> CLASSE
NodeInfo(ADoc.DocumentElement.FirstChild.FirstChild);
// -> CLASSE NAME=
NodeInfo(ADoc.DocumentElement.FirstChild.FirstChild.Attributes.GetNamedItem('NAME'));
tmp := ADoc.DocumentElement.FirstChild.FirstChild;
Classe := HandleClasse(tmp);
ClassesList.AddObject(Classe.TypeName, Classe);
while tmp.NextSibling <> nil do
begin
tmp := tmp.NextSibling;
Classe := HandleClasse(tmp);
ClassesList.AddObject(Classe.TypeName, Classe);
end;
// -> HOOKS
NodeInfo(ADoc.DocumentElement.FirstChild.FirstChild.FirstChild);
// -> HOOKFUNCTION
NodeInfo(ADoc.DocumentElement.FirstChild.FirstChild.FirstChild.FirstChild);
NodeInfo(ADoc.DocumentElement.FirstChild.FirstChild.FirstChild.FirstChild.FirstChild);
finally
ADoc.Free;
end;
end;
procedure FileGeneration(ClassesList, ListeParams : TStringList);
var
srcWriter : TSourceWriter;
a, i : integer;
begin
// -------------------------------
// Generating source files
// -------------------------------
WriteLn('<Begining Pascal code>');
for i := 0 to ListeParams.Count - 1 do
begin
if ClassesList.IndexOf(ListeParams[i]) <> - 1 then
begin
a := ClassesList.IndexOf(ListeParams[i]);
srcWriter := TSourceWriter.Create(TClasse(ClassesList.objects[a]).Name);
try
with srcWriter.Pas do
begin
Add('type');
Add(TClasse(ClassesList.objects[a]).PascalClasse(srcWriter.TypMap));
Add('');
Add(TClasse(ClassesList.Objects[a]).PascalHookDecl(srcWriter.TypMap));
Add('implementation' + Eol);
Add(TClasse(ClassesList.objects[a]).PascalHookVar(srcWriter.TypMap));
Add('');
Add(TClasse(ClassesList.objects[a]).PascalMethImpl(srcWriter.TypMap));
Add(TClasse(ClassesList.objects[a]).PascalHookImpl(srcWriter.TypMap));
Add(TClasse(ClassesList.objects[a]).PascalInit(srcWriter.TypMap));
Add('end.');
end;
with srcWriter.Cpp do
begin
Add(TClasse(ClassesList.Objects[a]).CppTypedef);
Add(StartExternalC);
Add(TClasse(ClassesList.Objects[a]).CppVarDecl);
Add(EndExternalC);
Add('');
Add(TClasse(ClassesList.Objects[a]).CppClassDecl);
Add(TClasse(ClassesList.Objects[a]).CppHookImpl);
end;
finally
srcWriter.Free;
end;
end;
end;
end;
//****************************************************************************************
var
ClassesList : TStringList;
ListeParams : TStringList;
i : integer;
begin
ListeParams := TStringList.Create;
try
LoadParams(ListeParams);
ClassesList := TStringList.Create;
try
LoadClassesList(ClassesList);
FileGeneration(ClassesList, ListeParams);
finally
for i := 0 to ClassesList.Count - 1 do
ClassesList.Objects[i].Free;
ClassesList.Free;
end;
finally
ListeParams.Free;
end;
end.