david
47aaf11578
git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.DevExpressVCL@38 05c56307-c608-d34a-929d-697000501d7a
554 lines
18 KiB
ObjectPascal
554 lines
18 KiB
ObjectPascal
{*******************************************************************}
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{ }
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{ ExpressWeb Framework by Developer Express }
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{ Server-side Script Implementor }
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{ }
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{ Copyright (c) 2000-2009 Developer Express Inc. }
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{ ALL RIGHTS RESERVED }
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{ }
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{ The entire contents of this file is protected by U.S. and }
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{ International Copyright Laws. Unauthorized reproduction, }
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{ reverse-engineering, and distribution of all or any portion of }
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{ the code contained in this file is strictly prohibited and may }
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{ result in severe civil and criminal penalties and will be }
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{ prosecuted to the maximum extent possible under the law. }
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{ }
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{ RESTRICTIONS }
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{ }
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{ THIS SOURCE CODE AND ALL RESULTING INTERMEDIATE FILES }
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{ (DCU, OBJ, DLL, ETC.) ARE CONFIDENTIAL AND PROPRIETARY TRADE }
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{ SECRETS OF DEVELOPER EXPRESS INC. THE REGISTERED DEVELOPER IS }
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{ LICENSED TO DISTRIBUTE THE EXPRESSWEB FRAMEWORK AND ALL }
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{ ACCOMPANYING VCL CLASSES AS PART OF AN EXECUTABLE WEB }
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{ APPLICATION ONLY. }
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{ }
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{ THE SOURCE CODE CONTAINED WITHIN THIS FILE AND ALL RELATED }
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{ FILES OR ANY PORTION OF ITS CONTENTS SHALL AT NO TIME BE }
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{ COPIED, TRANSFERRED, SOLD, DISTRIBUTED, OR OTHERWISE MADE }
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{ AVAILABLE TO OTHER INDIVIDUALS WITHOUT EXPRESS WRITTEN CONSENT }
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{ AND PERMISSION FROM DEVELOPER EXPRESS INC. }
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{ }
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{ CONSULT THE END USER LICENSE AGREEMENT FOR INFORMATION ON }
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{ ADDITIONAL RESTRICTIONS. }
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{ }
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{*******************************************************************}
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unit cxWebPasScript;
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interface
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uses
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Classes, SysUtils, HttpProd, Contnrs,
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cxWebScript, cxWebIntf,
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ifps3, ifps3debug, ifpscomp, ifpiclass, ifpiclassruntime;
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type
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TcxPascalScriptRTEvent = procedure(Exec: TIFPSExec) of object;
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TcxPascalScriptCompRegEvent = procedure(Comp: TIFPSPascalCompiler; Imp: TIFPSCompileTimeClassesImporter) of object;
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TcxPascalScriptExecRegEvent = procedure(Exec: TIFPSExec; Imp: TIFPSRuntimeClassImporter) of object;
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TcxPascalScriptEngine = class
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private
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FComp: TIFPSPascalCompiler;
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FExec: TIFPSDebugExec;
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FCImp: TIFPSCompileTimeClassesImporter;
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FRImp: TIFPSRuntimeClassImporter;
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FIncludedImporterList: TClassList;
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FScript: string;
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FOnAssignScriptVars: TcxPascalScriptRTEvent;
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FOnCompRegistration: TcxPascalScriptCompRegEvent;
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FOnExecRegistration: TcxPascalScriptExecRegEvent;
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function IsCompileError: Boolean;
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function GetCompileErrorCount: Integer;
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function GetCompileError(Index: Integer): PIFPSPascalCompilerMessage;
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function GetErrorCount: Integer;
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procedure ConvertPosition(const APos: Integer; out X, Y: Integer);
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procedure CommonRuntimeRegistration;
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procedure CommonCompileRegistration;
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protected
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function Compile: Boolean;
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function Execute: Boolean;
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function DoOnUses(ASender: TIFPSPascalCompiler; const AName: string): Boolean;
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public
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constructor Create;
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destructor Destroy; override;
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function GetErrorDesc(Index: Integer): string;
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function GetErrorCode(Index: Integer): Integer;
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function GetErrorLine(Index: Integer): Integer;
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function GetErrorPos(Index: Integer): Integer;
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function GetErrorSource(Index: Integer): string;
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function GetErrorSrcLine(Index: Integer): string;
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property Script: string write FScript;
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property ErrorCount: Integer read GetErrorCount;
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property OnAssignScriptVars: TcxPascalScriptRTEvent read FOnAssignScriptVars write FOnAssignScriptVars;
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property OnCompRegistration: TcxPascalScriptCompRegEvent read FOnCompRegistration write FOnCompRegistration;
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property OnExecRegistration: TcxPascalScriptExecRegEvent read FOnExecRegistration write FOnExecRegistration;
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end;
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TcxWebPascalScripter = class(TComponent, IcxWebScripter)
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private
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FNamedItems: TStrings;
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FPascalScript: TcxPascalScriptEngine;
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procedure AssignScriptVariables(Exec: TIFPSExec);
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procedure CompRegisteration(Comp: TIFPSPascalCompiler; Imp: TIFPSCompileTimeClassesImporter);
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procedure ExecRegisteration(Exec: TIFPSExec; Imp: TIFPSRuntimeClassImporter);
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protected
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{ IcxWebScripter }
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procedure AddGlobalObjects(AProducer: TAbstractScriptProducer);
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procedure AddComponents(AProducer: TAbstractScriptProducer);
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procedure ClearAll;
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procedure Run(const AText, AScriptEngine: string);
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property PascalScript: TcxPascalScriptEngine read FPascalScript;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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end;
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TcxWebPascalScriptProducer = class(TcxWebScriptProducer)
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private
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FScripter: TcxWebPascalScripter;
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protected
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function GetScripter: IcxWebScripter; override;
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function GetScripterErrors: TAbstractScriptErrors; override;
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procedure WriteString(const Value: string);
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public
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destructor Destroy; override;
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end;
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const
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IfPasScript = TcxScriptEngine(3);
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implementation
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uses
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WebCntxt,
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cxWebPasScriptStrs, cxWebPasImpFactory, cxWebSess,
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ifps3common, ifps3utl, ifpicall, ifpidll2, ifpidll2runtime, ifpidelphi, ifpidelphiruntime,
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ifpidateutils, ifpidateutilsr, ifps3lib_std, ifps3lib_stdr,
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ifpii_classes, ifpiir_classes, ifpii_std, ifpiir_std, ifpii_DB, ifpiir_DB,
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cxWebPasImp, cxWebPasDBImp, cxWebPasGlobalImp;
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{ TcxPascalScriptEngine }
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function GlobalOnUses(Sender: TIFPSPascalCompiler; const Name: string): Boolean;
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begin
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Result := TcxPascalScriptEngine(Sender.ID).DoOnUses(Sender, Name);
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end;
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constructor TcxPascalScriptEngine.Create;
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begin
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inherited;
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FComp := TIFPSPascalCompiler.Create;
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FComp.ID := Self;
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FComp.OnUses := GlobalOnUses;
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FComp.OnExternalProc := DllExternalProc;
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FComp.Clear;
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FComp.AllowNoBegin := False;
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FComp.AllowUnit := True;
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FComp.AllowNoEnd := False;
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FExec := TIFPSDebugExec.Create;
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FExec.Clear;
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FExec.CleanUp;
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FExec.ClearFunctionList;
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FIncludedImporterList := TClassList.Create;
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FRImp := TIFPSRuntimeClassImporter.Create;
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end;
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destructor TcxPascalScriptEngine.Destroy;
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begin
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FRImp.Free;
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FExec.Free;
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FComp.Free;
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FIncludedImporterList.Free;
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inherited;
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end;
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function TcxPascalScriptEngine.Compile: Boolean;
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begin
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Result := FComp.Compile(FScript);
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end;
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function TcxPascalScriptEngine.Execute: Boolean;
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var
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Data: string;
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I: Integer;
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begin
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CommonRuntimeRegistration;
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if Assigned(FOnExecRegistration) then
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FOnExecRegistration(FExec, FRImp);
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for I := 0 to FIncludedImporterList.Count - 1 do
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TcxPascalScriptImporterClass(FIncludedImporterList[I]).RunTimeRegistration(FRImp);
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Data := '';
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FComp.GetOutput(Data);
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FExec.LoadData(Data);
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FComp.GetDebugOutput(Data);
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FExec.LoadDebugData(Data);
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if Assigned(FOnAssignScriptVars) then
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FOnAssignScriptVars(FExec);
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Result := FExec.RunScript and (FExec.ExceptionCode = erNoError);
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end;
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function TcxPascalScriptEngine.DoOnUses(ASender: TIFPSPascalCompiler;
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const AName: string): Boolean;
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var
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AList: TClassList;
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I: Integer;
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Current: TcxPascalScriptImporterClass;
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begin
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if FCImp = nil then
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FCImp := TIFPSCompileTimeClassesImporter.Create(FComp, True);
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Result := SameText(AName, 'system');
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if Result then
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begin
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CommonCompileRegistration;
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if Assigned(FOnCompRegistration) then
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FOnCompRegistration(FComp, FCImp);
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end
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else
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begin
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AList := TClassList.Create;
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try
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cxPasScriptImpFactory.GetImporterClassList(AName, AList);
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Result := AList.Count > 0;
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for I := 0 to AList.Count - 1 do
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begin
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Current := TcxPascalScriptImporterClass(AList[I]);
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Current.CompileTimeRegistration(FCImp);
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FIncludedImporterList.Add(Current);
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end;
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finally
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AList.Free;
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end;
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end;
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if not Result then
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ASender.MakeError('', ecUnknownIdentifier, AName);
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end;
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function TcxPascalScriptEngine.IsCompileError: Boolean;
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begin
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Result := GetCompileErrorCount > 0;
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end;
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function TcxPascalScriptEngine.GetCompileErrorCount: Integer;
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var
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I: Integer;
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begin
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Result := 0;
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for I := 0 to FComp.MsgCount - 1 do
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if FComp.Msg[I]^.MessageType = ptError then
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Inc(Result);
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end;
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function TcxPascalScriptEngine.GetCompileError(Index: Integer): PIFPSPascalCompilerMessage;
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var
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I, Cnt: Integer;
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begin
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Result := nil;
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Cnt := -1;
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for I := 0 to FComp.MsgCount - 1 do
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if FComp.Msg[I]^.MessageType = ptError then
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begin
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Inc(Cnt);
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Result := FComp.Msg[I];
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if Cnt = Index then break;
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end;
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end;
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function TcxPascalScriptEngine.GetErrorCount: Integer;
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begin
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Result := GetCompileErrorCount;
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if (Result = 0) and (FExec.ExceptionCode <> erNoError) then
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Result := 1;
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end;
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procedure TcxPascalScriptEngine.ConvertPosition(const APos: Integer;
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out X, Y: Integer);
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var
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LocPos, C: Integer;
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begin
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if APos > Length(FScript) then
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LocPos := Length(FScript)
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else
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LocPos := APos;
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X := 1;
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Y := 1;
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C := 1;
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while C <= LocPos do
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begin
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if (FScript[C] = #13) or (FScript[C] = #10) then
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begin
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if ((FScript[C + 1] = #13) or (FScript[C + 1] = #10)) and
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(FScript[C] <> FScript[C + 1]) then
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Inc(C);
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X := 1;
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Inc(Y);
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end
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else
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Inc(X);
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Inc(C);
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end;
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end;
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function TcxPascalScriptEngine.GetErrorCode(Index: Integer): Integer;
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begin
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if IsCompileError then
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Result := Ord(GetCompileError(Index)^.Error)
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else
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Result := Ord(FExec.ExceptionCode);
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end;
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function TcxPascalScriptEngine.GetErrorSource(Index: Integer): string;
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begin
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if IsCompileError then
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Result := scxPascalCompileError
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else
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Result := scxPascalRunError;
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end;
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function TcxPascalScriptEngine.GetErrorDesc(Index: Integer): string;
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begin
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if IsCompileError then
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begin
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Result := IFPSMessageToString(GetCompileError(Index));
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if (Pos('[', Result) > 0) and (Pos(']', Result) > 0) and (Pos(':', Result) > 0) then
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Result := PChar(Result) + Pos(':', Result);
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end
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else
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Result := TIFErrorToString(FExec.ExceptionCode, FExec.ExceptionString);
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end;
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function TcxPascalScriptEngine.GetErrorLine(Index: Integer): Integer;
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var
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X: Integer;
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begin
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if IsCompileError then
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Result := GetCompileError(Index)^.Position
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else
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Result := FExec.TranslatePosition(FExec.ExceptionProcNo, FExec.ExceptionPos);
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ConvertPosition(Result, X, Result);
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end;
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function TcxPascalScriptEngine.GetErrorPos(Index: Integer): Integer;
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var
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Y: Integer;
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begin
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if IsCompileError then
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Result := GetCompileError(Index)^.Position
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else
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Result := FExec.TranslatePosition(FExec.ExceptionProcNo, FExec.ExceptionPos);
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ConvertPosition(Result, Result, Y);
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end;
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function TcxPascalScriptEngine.GetErrorSrcLine(Index: Integer): string;
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begin
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Result := '';
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end;
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procedure TcxPascalScriptEngine.CommonCompileRegistration;
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begin
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RegisterStandardLibrary_C(FComp);
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RegisterDateTimeLibrary_C(FComp);
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SIRegister_Std(FCImp);
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SIRegister_Classes(FCImp);
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SIRegister_DB(FCImp);
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end;
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procedure TcxPascalScriptEngine.CommonRuntimeRegistration;
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begin
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RegisterDLLRuntime(FExec);
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RegisterStandardLibrary_R(FExec);
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RegisterDateTimeLibrary_R(FExec);
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RIRegister_Std(FRImp);
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RIRegister_Classes(FRImp);
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RIRegister_DB(FRImp);
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RegisterClassLibraryRuntime(FExec, FRImp);
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end;
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{ TcxWebPascalScripter }
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constructor TcxWebPascalScripter.Create(AOwner: TComponent);
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begin
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inherited Create(nil);
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FNamedItems := TStringList.Create;
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FPascalScript := TcxPascalScriptEngine.Create;
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FPascalScript.OnAssignScriptVars := AssignScriptVariables;
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FPascalScript.OnCompRegistration := CompRegisteration;
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FPascalScript.OnExecRegistration := ExecRegisteration;
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end;
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destructor TcxWebPascalScripter.Destroy;
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begin
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FNamedItems.Clear;
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FNamedItems.Free;
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FPascalScript.Free;
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inherited;
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end;
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procedure TcxWebPascalScripter.AssignScriptVariables(Exec: TIFPSExec);
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var
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I: Integer;
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begin
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for I := 0 to FNamedItems.Count - 1 do
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SetVariantToClass(Exec.GetVar2(FNamedItems[I]), FNamedItems.Objects[I]);
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end;
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procedure TcxWebPascalScripter.CompRegisteration(Comp: TIFPSPascalCompiler;
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Imp: TIFPSCompileTimeClassesImporter);
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function FindnearestClass(AObject: TObject): TClass;
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begin
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Result := AObject.ClassType;
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while (Imp.FindClass(Result.ClassName) = nil) and (Result <> TObject) do
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Result := Result.ClassParent;
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end;
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var
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I: Integer;
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ImporterClass: TcxPascalScriptImporterClass;
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AClass: TClass;
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CTClass: TIFPSCompileTimeClass;
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begin
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for I := 0 to FNamedItems.Count - 1 do
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begin
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AClass := FNamedItems.Objects[I].ClassType;
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ImporterClass := cxPasScriptImpFactory.GetImporterClass(AClass);
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if ImporterClass <> nil then
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ImporterClass.CompileTimeRegistration(Imp);
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if (ImporterClass = nil) or (ImporterClass.ObjectClass <> AClass) then
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begin
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CTClass := cxCTRegisterClass(Imp, AClass);
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if CTClass <> nil then
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CTClass.RegisterPublishedProperties;
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end;
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AddImportedClassVariable(Comp, FNamedItems[I], AClass.ClassName);
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end;
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end;
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procedure TcxWebPascalScripter.ExecRegisteration(Exec: TIFPSExec;
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Imp: TIFPSRuntimeClassImporter);
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var
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I: Integer;
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ImporterClass: TcxPascalScriptImporterClass;
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AClass: TClass;
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begin
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for I := 0 to FNamedItems.Count - 1 do
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begin
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AClass := FNamedItems.Objects[I].ClassType;
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ImporterClass := cxPasScriptImpFactory.GetImporterClass(AClass);
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if ImporterClass <> nil then
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ImporterClass.RunTimeRegistration(Imp);
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if (ImporterClass = nil) or (ImporterClass.ObjectClass <> AClass) then
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cxRTRegisterClass(Imp, AClass);
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end;
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end;
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procedure TcxWebPascalScripter.AddComponents(AProducer: TAbstractScriptProducer);
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var
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I: Integer;
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Module, Component: TComponent;
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ScriptProducer: IScriptProducer;
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begin
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if Supports(AProducer, IScriptProducer, ScriptProducer) then
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begin
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Module := TComponent(ScriptProducer.WebModuleContext);
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if Module <> nil then
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begin
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FNamedItems.AddObject(UpperCase(cxsoForm), Module);
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FNamedItems.AddObject(UpperCase(Module.Name), Module);
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for I := 0 to Module.ComponentCount - 1 do
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begin
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Component := Module.Components[I];
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if Component.Name <> '' then
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FNamedItems.AddObject(UpperCase(Component.Name), Component);
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end;
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end;
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end;
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end;
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procedure TcxWebPascalScripter.AddGlobalObjects(AProducer: TAbstractScriptProducer);
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begin
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FNamedItems.AddObject(UpperCase(cxsoResponse), AProducer);
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if WebContext <> nil then
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begin
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FNamedItems.AddObject(UpperCase(cxsoRequest), WebContext.Request);
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FNamedItems.AddObject(UpperCase(cxsoSession), WebContext.Session);
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FNamedItems.AddObject(UpperCase(cxsoSessions), cxWebSessions);
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FNamedItems.AddObject(UpperCase(cxsoContext), WebContext);
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end;
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end;
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procedure TcxWebPascalScripter.ClearAll;
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begin
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FNamedItems.Clear;
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end;
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procedure TcxWebPascalScripter.Run(const AText, AScriptEngine: string);
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begin
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FPascalScript.Script := AText;
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if FPascalScript.Compile then
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FPascalScript.Execute;
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end;
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{ TcxWebPascalScriptProducer }
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destructor TcxWebPascalScriptProducer.Destroy;
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begin
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FreeAndNil(FScripter);
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inherited;
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end;
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function TcxWebPascalScriptProducer.GetScripter: IcxWebScripter;
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begin
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Result := nil;
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if FScripter = nil then
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FScripter := TcxWebPascalScripter.Create(nil);
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Supports(FScripter, IcxWebScripter, Result);
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end;
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function TcxWebPascalScriptProducer.GetScripterErrors: TAbstractScriptErrors;
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var
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I: Integer;
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Error: TcxWebScriptError;
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LocPosition, LocLine, LocCharPos: Integer;
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|
LocFileName: string;
|
|
begin
|
|
for I := 0 to FScripter.PascalScript.ErrorCount - 1 do
|
|
begin
|
|
Error := TcxWebScriptError.Create;
|
|
LocPosition := 0;
|
|
LocLine := FScripter.PascalScript.GetErrorLine(I);
|
|
LocCharPos := FScripter.PascalScript.GetErrorPos(I);
|
|
LocFileName := '';
|
|
ScriptParser.LineNumberMap.Convert(LocPosition, LocLine, LocCharPos, LocFileName);
|
|
with Error do
|
|
begin
|
|
Code := FScripter.PascalScript.GetErrorCode(I);
|
|
Source := FScripter.PascalScript.GetErrorSource(I);
|
|
Position := LocPosition;
|
|
Line := LocLine;
|
|
CharPos := LocCharPos;
|
|
FileName := LocFileName;
|
|
Description := FScripter.PascalScript.GetErrorDesc(I);
|
|
SourceLine := FScripter.PascalScript.GetErrorSrcLine(I);
|
|
end;
|
|
Errors.Add(Error);
|
|
end;
|
|
Result := Errors;
|
|
end;
|
|
|
|
procedure TcxWebPascalScriptProducer.WriteString(const Value: string);
|
|
begin
|
|
Write(Value);
|
|
end;
|
|
|
|
initialization
|
|
AvailableScriptEngines.RegisterEngine(IfPasScript, 'IfPasScript', TcxWebPascalScriptProducer, 'cxWebPasScript', scxPascalHTMLtemplate); // Do not localize
|
|
|
|
finalization
|
|
AvailableScriptEngines.UnregisterEngine(IfPasScript);
|
|
|
|
end.
|