CompilerState.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / BuildTasks / MS / Internal / Tasks / CompilerState.cs / 1305600 / CompilerState.cs
                        

                        
                             
//----------------------------------------------------------------------------------------
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved. 
// 
// 
// Description: 
//       An internal class which handles compiler information cache. It can read
//       write the cache file, this is for incremental build support. 
//
//  History:
//
//  11/21/05: weibz   Created 
//
//--------------------------------------------------------------------------------------- 
 
using System;
using System.IO; 
using System.Collections;
using System.Diagnostics;
using System.Text;
using System.Globalization; 

using Microsoft.Build.Tasks.Windows; 
using Microsoft.Build.Framework; 
using Microsoft.Build.Utilities;
using MS.Utility; 

namespace MS.Internal.Tasks
{
    // 
    // Only cache information for below types.
    // 
    internal enum CompilerStateType : int 
    {
        AssemblyName = 0x00, 
        AssemblyVersion,
        AssemblyPublicKeyToken,
        OutputType,
        Language, 
        LanguageSourceExtension,
        OutputPath, 
        RootNamespace, 
        LocalizationDirectivesToLocFile,
        HostInBrowser, 
        DefineConstants,
        ApplicationFile,
        PageMarkup,
        ContentFiles, 
        SourceCodeFiles,
        References, 
        PageMarkupFileNames, 
        SplashImage,
        Pass2Required, 
        MaxCount,
    }

    //  
    // CompilerState
    //  
    internal class CompilerState 
    {
        //  
        // ctor of CompilerState
        // 
        internal CompilerState(string stateFilePath, ITaskFileService taskFileService)
        { 
            _cacheInfoList = new String[(int)CompilerStateType.MaxCount];
            _stateFilePath = stateFilePath; 
            _taskFileService = taskFileService; 
        }
 
        #region internal methods


        //  
        // Detect whether the state file exists or not.
        //  
        //  
        internal bool StateFileExists()
        { 
            return _taskFileService.Exists(_stateFilePath);
        }

        // 
        // Clean up the state file.
        // 
        internal void CleanupCache() 
        {
            if (StateFileExists() ) 
            {
                _taskFileService.Delete(_stateFilePath);
            }
        } 

        internal bool SaveStateInformation(MarkupCompilePass1 mcPass1) 
        { 
            Debug.Assert(String.IsNullOrEmpty(_stateFilePath) != true, "StateFilePath must not be empty.");
            Debug.Assert(mcPass1 != null, "A valid instance of MarkupCompilePass1 must be passed to method SaveCacheInformation."); 
            Debug.Assert(_cacheInfoList.Length == (int)CompilerStateType.MaxCount, "The Cache string array should be already allocated.");


 
            // Transfer the cache related information from mcPass1 to this instance.
 
            AssemblyName = mcPass1.AssemblyName; 
            AssemblyVersion = mcPass1.AssemblyVersion;
            AssemblyPublicKeyToken = mcPass1.AssemblyPublicKeyToken; 
            OutputType = mcPass1.OutputType;
            Language = mcPass1.Language;
            LanguageSourceExtension = mcPass1.LanguageSourceExtension;
            OutputPath = mcPass1.OutputPath; 
            RootNamespace = mcPass1.RootNamespace;
            LocalizationDirectivesToLocFile = mcPass1.LocalizationDirectivesToLocFile; 
            HostInBrowser = mcPass1.HostInBrowser; 
            DefineConstants = mcPass1.DefineConstants;
            ApplicationFile = mcPass1.ApplicationFile; 
            PageMarkup = mcPass1.PageMarkupCache;
            ContentFiles = mcPass1.ContentFilesCache;
            SourceCodeFiles = mcPass1.SourceCodeFilesCache;
            References = mcPass1.ReferencesCache; 
            PageMarkupFileNames = GenerateStringFromFileNames(mcPass1.PageMarkup);
            SplashImage = mcPass1.SplashImageName; 
            Pass2Required = (mcPass1.RequirePass2ForMainAssembly || mcPass1.RequirePass2ForSatelliteAssembly); 

            return SaveStateInformation(); 
        }

        internal bool SaveStateInformation()
        { 
            bool bSuccess = false;
 
            // Save the cache information to the cache file. 

            MemoryStream memStream = new MemoryStream(); 
            // using Disposes the StreamWriter when it ends.  Disposing the StreamWriter
            // also closes the underlying MemoryStream.  Furthermore, don't add BOM here
            // since TaskFileService.WriteFile adds it.
            using (StreamWriter sw = new StreamWriter(memStream, new UTF8Encoding(false))) 
            {
                for (int i =0; i<(int)CompilerStateType.MaxCount; i++) 
                { 
                    sw.WriteLine(_cacheInfoList[i]);
                } 

                sw.Flush();
                _taskFileService.WriteFile(memStream.ToArray(), _stateFilePath);
 
                bSuccess = true;
            } 
 
            return bSuccess;
        } 

        //
        // Read the markupcompiler cache file, load the cached information
        // to the corresponding data fields in this class. 
        //
        internal bool LoadStateInformation( ) 
        { 
            Debug.Assert(String.IsNullOrEmpty(_stateFilePath) != true, "_stateFilePath must be not be empty.");
            Debug.Assert(_cacheInfoList.Length == (int)CompilerStateType.MaxCount, "The Cache string array should be already allocated."); 

            bool loadSuccess = false;

            Stream stream = null; 
            if (_taskFileService.IsRealBuild)
            { 
                // Pass2 writes to the cache, but Pass2 doesn't have a HostObject (because it's only 
                // used for real builds), so it writes directly to the file system. So we need to read
                // directly from the file system; if we read via the HostFileManager, we'll get stale 
                // results that don't reflect updates made in Pass2.
                stream = File.OpenRead(_stateFilePath);
            }
            else 
            {
                stream = _taskFileService.GetContent(_stateFilePath); 
            } 

            // using Disposes the StreamReader when it ends.  Disposing the StreamReader 
            // also closes the underlying MemoryStream.  Don't look for BOM at the beginning
            // of the stream, since we don't add it when writing.  TaskFileService takes care
            // of this.
            using (StreamReader srCache = new StreamReader(stream, false)) 
            {
 
                int i = 0; 

                while (srCache.EndOfStream != true) 
                {
                    if (i >= (int)CompilerStateType.MaxCount)
                    {
                        break; 
                    }
 
                    _cacheInfoList[i] = srCache.ReadLine(); 

                    i++; 
                }

                loadSuccess = true;
            } 

            return loadSuccess; 
 
        }
 
        //
        // Generate cache string for item lists such as PageMarkup, References,
        // ContentFiles and CodeFiles etc.
        // 
        internal static string GenerateCacheForFileList(ITaskItem[] fileItemList)
        { 
            string cacheString = String.Empty; 

            if (fileItemList != null && fileItemList.Length > 0) 
            {
                int iHashCode = 0;

                int iCount = fileItemList.Length; 

                for (int i = 0; i < iCount; i++) 
                { 
                    iHashCode += fileItemList[i].ItemSpec.GetHashCode();
                } 

                StringBuilder sb = new StringBuilder();

                sb.Append(iCount); 
                sb.Append(iHashCode);
 
                cacheString = sb.ToString(); 
            }
 

            return cacheString;

        } 

        private static string GenerateStringFromFileNames(ITaskItem[] fileItemList) 
        { 
            string fileNames = String.Empty;
 
            if (fileItemList != null)
            {
                StringBuilder sb = new StringBuilder();
 
                for (int i = 0; i < fileItemList.Length; i++)
                { 
                    sb.Append(fileItemList[i].ItemSpec); 
                    sb.Append(";");
                } 

                fileNames = sb.ToString();
            }
 
            return fileNames;
        } 
 
        #endregion
 
        #region internal properties

        internal string CacheFilePath
        { 
            get { return _stateFilePath; }
        } 
 
        internal string AssemblyName
        { 
            get { return _cacheInfoList[(int)CompilerStateType.AssemblyName]; }
            set { _cacheInfoList[(int)CompilerStateType.AssemblyName] = value; }
        }
 
        internal string AssemblyVersion
        { 
            get { return _cacheInfoList[(int)CompilerStateType.AssemblyVersion]; } 
            set { _cacheInfoList[(int)CompilerStateType.AssemblyVersion] = value; }
        } 

        internal string AssemblyPublicKeyToken
        {
            get { return _cacheInfoList[(int)CompilerStateType.AssemblyPublicKeyToken]; } 
            set { _cacheInfoList[(int)CompilerStateType.AssemblyPublicKeyToken] = value; }
        } 
 
        internal string OutputType
        { 
            get { return _cacheInfoList[(int)CompilerStateType.OutputType]; }
            set { _cacheInfoList[(int)CompilerStateType.OutputType] = value; }
        }
 
        internal string Language
        { 
            get { return _cacheInfoList[(int)CompilerStateType.Language]; } 
            set { _cacheInfoList[(int)CompilerStateType.Language] = value; }
        } 

        internal string LanguageSourceExtension
        {
            get { return _cacheInfoList[(int)CompilerStateType.LanguageSourceExtension]; } 
            set { _cacheInfoList[(int)CompilerStateType.LanguageSourceExtension] = value; }
        } 
 
        internal string OutputPath
        { 
            get { return _cacheInfoList[(int)CompilerStateType.OutputPath]; }
            set { _cacheInfoList[(int)CompilerStateType.OutputPath] = value; }
        }
 
        internal string RootNamespace
        { 
            get { return _cacheInfoList[(int)CompilerStateType.RootNamespace]; } 
            set { _cacheInfoList[(int)CompilerStateType.RootNamespace] = value; }
        } 

        internal string LocalizationDirectivesToLocFile
        {
            get { return _cacheInfoList[(int)CompilerStateType.LocalizationDirectivesToLocFile]; } 
            set { _cacheInfoList[(int)CompilerStateType.LocalizationDirectivesToLocFile] = value; }
        } 
 
        internal string HostInBrowser
        { 
            get { return _cacheInfoList[(int)CompilerStateType.HostInBrowser]; }
            set { _cacheInfoList[(int)CompilerStateType.HostInBrowser] = value; }
        }
 
        internal string DefineConstants
        { 
            get { return _cacheInfoList[(int)CompilerStateType.DefineConstants]; } 
            set { _cacheInfoList[(int)CompilerStateType.DefineConstants] = value; }
        } 

        internal string ApplicationFile
        {
            get { return _cacheInfoList[(int)CompilerStateType.ApplicationFile]; } 
            set { _cacheInfoList[(int)CompilerStateType.ApplicationFile] = value; }
        } 
 
        internal string PageMarkup
        { 
            get { return _cacheInfoList[(int)CompilerStateType.PageMarkup]; }
            set { _cacheInfoList[(int)CompilerStateType.PageMarkup] = value; }
        }
 
        internal string ContentFiles
        { 
            get { return _cacheInfoList[(int)CompilerStateType.ContentFiles]; } 
            set { _cacheInfoList[(int)CompilerStateType.ContentFiles] = value; }
        } 

        internal string SourceCodeFiles
        {
            get { return _cacheInfoList[(int)CompilerStateType.SourceCodeFiles]; } 
            set { _cacheInfoList[(int)CompilerStateType.SourceCodeFiles] = value; }
        } 
 
        internal string References
        { 
            get { return _cacheInfoList[(int)CompilerStateType.References]; }
            set { _cacheInfoList[(int)CompilerStateType.References] = value; }
        }
 
        internal string PageMarkupFileNames
        { 
            get { return _cacheInfoList[(int)CompilerStateType.PageMarkupFileNames]; } 
            set { _cacheInfoList[(int)CompilerStateType.PageMarkupFileNames] = value; }
        } 

        internal string SplashImage
        {
            get { return _cacheInfoList[(int)CompilerStateType.SplashImage]; } 
            set { _cacheInfoList[(int)CompilerStateType.SplashImage] = value; }
        } 
 
        internal bool Pass2Required
        { 
            get { return _cacheInfoList[(int)CompilerStateType.Pass2Required] == bool.TrueString; }
            set { _cacheInfoList[(int)CompilerStateType.Pass2Required] = value.ToString(CultureInfo.InvariantCulture); }
        }
 
        #endregion
 
        #region private data 

        private String [] _cacheInfoList; 
        private string    _stateFilePath;
        private ITaskFileService _taskFileService = null;

        #endregion 

    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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