david
fd289722e5
git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.DevExpressVCL@29 05c56307-c608-d34a-929d-697000501d7a
273 lines
7.9 KiB
ObjectPascal
273 lines
7.9 KiB
ObjectPascal
{Delphi function importer (compiletime)}
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unit ifpidelphi;
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{
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Innerfuse Pascal Script Call unit
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You may not copy a part of this unit, only use it as whole, with
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Innerfuse Pascal Script Script Engine.
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}
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{$I ifps3_def.inc}
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interface
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uses
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ifps3utl, ifps3common, ifpscomp;
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{ Register a normal Delphi function at runtime. Decl should be the exact declaration of the
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function. But since the const keyword is not support yet, you should leave that out.}
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function RegisterDelphiFunctionC(SE: TIFPSPascalCompiler; const Decl: string): Boolean;
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function RegisterDelphiFunctionC2(SE: TIFPSPascalCompiler; const Decl: string): TIFPSRegProc;
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type
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TFuncType = (ftProc, ftConstructor);
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function ParseMethod(Owner: TIFPSPascalCompiler; const FClassName: string; const Decl: string; var DName, DStr: string; var Func: TFuncType): Boolean;
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implementation
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type
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TComp = class(TIFPSPascalCompiler);
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function ParseMethod(Owner: TIFPSPascalCompiler; const FClassName: string; const Decl: string; var DName, DStr: string; var Func: TFuncType): Boolean;
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var
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Parser: TIfPascalParser;
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tt: PIFPSType;
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FuncType: Byte;
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VNames, Name, NDecl: string;
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modifier: Char;
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VCType: Cardinal;
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function FindAdd(const Name, Decl: string): Cardinal;
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begin
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Result := Owner.FindType(Name);
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if Result = Cardinal(-1) then
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begin
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tt := Owner.AddTypeS(Name, Decl);
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tt.ExportName := True;
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Result := TComp(Owner).FAvailableTypes.Count -1;
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end;
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end;
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begin
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Parser := TIfPascalParser.Create;
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Parser.SetText(Decl);
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if Parser.CurrTokenId = CSTII_Function then
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FuncType:= 0
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else if Parser.CurrTokenId = CSTII_Procedure then
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FuncType := 1
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else if (Parser.CurrTokenId = CSTII_Constructor) and (FClassName <> '') then
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FuncType := 2
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else
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begin
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Parser.Free;
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Result := False;
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exit;
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end;
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NDecl := '';
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Parser.Next;
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if Parser.CurrTokenId <> CSTI_Identifier then
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begin
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Parser.Free;
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Result := False;
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exit;
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end; {if}
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Name := Parser.GetToken;
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Parser.Next;
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if Parser.CurrTokenId = CSTI_OpenRound then
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begin
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Parser.Next;
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if Parser.CurrTokenId <> CSTI_CloseRound then
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begin
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while True do
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begin
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if Parser.CurrTokenId = CSTII_Const then
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begin
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modifier := '@';
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Parser.Next;
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end
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else
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if Parser.CurrTokenId = CSTII_Var then
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begin
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modifier := '!';
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Parser.Next;
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end
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else
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modifier := '@';
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if Parser.CurrTokenId <> CSTI_Identifier then
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begin
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Parser.Free;
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Result := False;
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exit;
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end;
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VNames := Parser.GetToken + '|';
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Parser.Next;
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while Parser.CurrTokenId = CSTI_Comma do
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begin
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Parser.Next;
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if Parser.CurrTokenId <> CSTI_Identifier then
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begin
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Parser.Free;
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Result := False;
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exit;
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end;
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VNames := VNames + Parser.GetToken + '|';
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Parser.Next;
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end;
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if Parser.CurrTokenId <> CSTI_Colon then
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begin
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Parser.Free;
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Result := False;
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exit;
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end;
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Parser.Next;
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if Parser.CurrTokenID = CSTII_Array then
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begin
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Parser.nExt;
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if Parser.CurrTokenId <> CSTII_Of then
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begin
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Parser.Free;
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Result := False;
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exit;
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end;
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Parser.Next;
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if Parser.CurrTokenId = CSTII_Const then
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VCType := FindAdd('!OPENARRAYOFCONST', 'array of variant')
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else begin
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VCType := Owner.FindType(Parser.GetToken);
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if VCType = Cardinal(-1) then
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begin
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Parser.Free;
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Result := False;
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exit;
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end;
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case TComp(Owner).GetAvailableType(VCType).BaseType of
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btU8: VCType := FindAdd('!OPENARRAYOFU8', 'array of byte');
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btS8: VCType := FindAdd('!OPENARRAYOFS8', 'array of ShortInt');
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btU16: VCType := FindAdd('!OPENARRAYOFU16', 'array of SmallInt');
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btS16: VCType := FindAdd('!OPENARRAYOFS16', 'array of Word');
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btU32: VCType := FindAdd('!OPENARRAYOFU32', 'array of Cardinal');
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btS32: VCType := FindAdd('!OPENARRAYOFS32', 'array of Longint');
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btSingle: VCType := FindAdd('!OPENARRAYOFSINGLE', 'array of Single');
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btDouble: VCType := FindAdd('!OPENARRAYOFDOUBLE', 'array of Double');
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btExtended: VCType := FindAdd('!OPENARRAYOFEXTENDED', 'array of Extended');
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btString: VCType := FindAdd('!OPENARRAYOFSTRING', 'array of String');
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btPChar: VCType := FindAdd('!OPENARRAYOFPCHAR', 'array of PChar');
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btVariant: VCType := FindAdd('!OPENARRAYOFVARIANT', 'array of variant');
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{$IFNDEF NOINT64}btS64: VCType := FindAdd('!OPENARRAYOFS64', 'array of Int64');{$ENDIF}
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btChar: VCType := FindAdd('!OPENARRAYOFCHAR', 'array of Char');
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{$IFNDEF NOWIDESTRING}
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btWideString: VCType := FindAdd('!OPENARRAYOFWIDESTRING', 'array of WideString');
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btWideChar: VCType := FindAdd('!OPENARRAYOFWIDECHAR', 'array of WideChar');
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{$ENDIF}
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else
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begin
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Parser.Free;
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Result := False;
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exit;
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end;
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end;
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end;
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end else begin
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VCType := Owner.FindType(Parser.GetToken);
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if VCType = Cardinal(-1) then
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begin
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Parser.Free;
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Result := False;
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exit;
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end;
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end;
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while Pos('|', VNames) > 0 do
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begin
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NDecl := NDecl + ' ' + modifier + copy(VNames, 1, Pos('|', VNames) - 1)
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+
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' ' + inttostr(VCType);
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Delete(VNames, 1, Pos('|', VNames));
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end;
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Parser.Next;
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if Parser.CurrTokenId = CSTI_CloseRound then
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break;
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if Parser.CurrTokenId <> CSTI_Semicolon then
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begin
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Parser.Free;
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Result := False;
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exit;
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end;
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Parser.Next;
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end; {while}
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end; {if}
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Parser.Next;
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end; {if}
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if FuncType = 0 then
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begin
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if Parser.CurrTokenId <> CSTI_Colon then
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begin
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Parser.Free;
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Result := False;
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exit;
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end;
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Parser.Next;
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VCType := Owner.FindType(Parser.GetToken);
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if VCType = Cardinal(-1) then
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begin
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Parser.Free;
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Result := False;
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exit;
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end;
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end
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else if FuncType = 2 then {constructor}
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begin
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VCType := Owner.FindType(FClassName)
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end else
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VCType := Cardinal(-1);
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NDecl := inttostr(VCType) + NDecl;
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Parser.Free;
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DName := Name;
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DStr := NDecl;
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if FuncType = 2 then
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Func := ftConstructor
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else
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Func := ftProc;
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Result := True;
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end;
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function RegisterDelphiFunctionC(SE: TIFPSPascalCompiler; const Decl: string): Boolean;
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begin
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Result := RegisterDelphiFunctionC2(SE, Decl) <> nil;
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end;
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function RegisterDelphiFunctionC2(SE: TIFPSPascalCompiler; const Decl: string): TIFPSRegProc;
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var
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p: TIFPSRegProc;
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DName, s: string;
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FT: TFuncType;
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begin
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if not ParseMethod(SE, '', Decl, DName, s, FT) then begin Result := nil; exit; end;
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p := TIFPSRegProc.Create;
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P.Name := DName;
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p.ExportName := True;
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p.Decl := s;
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TComp(SE).FRegProcs.Add(p);
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if GRFW(s) = '-1' then
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begin
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p.ImportDecl := p.ImportDecl + #0;
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end else
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p.ImportDecl := p.ImportDecl + #1;
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while length(s) > 0 do
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begin
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if s[1] = '!' then
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p.ImportDecl := p.ImportDecl + #1
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else
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p.ImportDecl := p.ImportDecl + #0;
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grfw(s);
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grfw(s);
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end;
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p.ExportName := True;
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Result := p;
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end;
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end.
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