CompilerHelpers.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Common / Shared / CompilerHelpers.cs / 1305376 / CompilerHelpers.cs
                        
                        
                            // Copyright (c) Microsoft Corporation. All rights reserved. 
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
// WHETHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE. 
// THE ENTIRE RISK OF USE OR RESULTS IN CONNECTION WITH THE USE OF THIS CODE
// AND INFORMATION REMAINS WITH THE USER. 
 

/********************************************************************** 
 * NOTE: A copy of this file exists at: WF\Activities\Common
 * The two files must be kept in [....].  Any change made here must also
 * be made to WF\Activities\Common\CompilerHelpers.cs
*********************************************************************/ 

namespace System.Workflow.ComponentModel.Compiler 
{ 
 	using System;
	using System.Collections; 
	using System.Collections.Specialized;
	using System.Collections.Generic;
 	using System.CodeDom;
	using System.CodeDom.Compiler; 
 	using System.Workflow.ComponentModel;
 	using Microsoft.CSharp; 
	using Microsoft.VisualBasic; 
    using System.Reflection;
    using Microsoft.Win32; 
    using System.Security;
    using System.ComponentModel;
    using System.IO;
    using System.Diagnostics.CodeAnalysis; 

    internal enum SupportedLanguages 
    { 
        VB,
        CSharp 
    }

 	internal static class CompilerHelpers
	{ 
        private const string CompilerVersionKeyword = "CompilerVersion";
 
        private static Dictionary> providers = null; 
        private static object providersLock = new object();
 
        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
        internal static CodeDomProvider CreateCodeProviderInstance(Type type)
        {
            return CreateCodeProviderInstance(type, string.Empty); 
        }
 
        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")] 
        internal static CodeDomProvider CreateCodeProviderInstance(Type type, string compilerVersion)
        { 
            CodeDomProvider provider = null;
            if (string.IsNullOrEmpty(compilerVersion))
            {
                if (type == typeof(CSharpCodeProvider)) 
                    provider = new CSharpCodeProvider();
                else if (type == typeof(VBCodeProvider)) 
                    provider = new VBCodeProvider(); 
                else
                    provider = (CodeDomProvider)Activator.CreateInstance(type); 
            }
            else
            {
                //otherwise pass the compiler version parameter into it 
                Dictionary options = new Dictionary();
                options.Add(CompilerHelpers.CompilerVersionKeyword, compilerVersion); 
                provider = (CodeDomProvider)Activator.CreateInstance(type, new object[] { options }); 
            }
 
            return provider;
        }

        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")] 
        static CodeDomProvider GetCodeProviderInstance(Type type, string compilerVersion)
        { 
            CodeDomProvider provider; 
            lock (providersLock)
            { 
                if (providers == null)
                {
                    providers = new Dictionary>();
                } 

                Dictionary typedProviders; 
                if (!providers.TryGetValue(type, out typedProviders)) 
                {
                    typedProviders = new Dictionary(); 
                    providers.Add(type, typedProviders);
                }

                if (!typedProviders.TryGetValue(compilerVersion, out provider)) 
                {
                    provider = CreateCodeProviderInstance(type, compilerVersion); 
                    typedProviders.Add(compilerVersion, provider); 
                }
            } 

            return provider;
        }
 
        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
        internal static CodeDomProvider GetCodeDomProvider(SupportedLanguages language) 
        { 
            return CompilerHelpers.GetCodeDomProvider(language, string.Empty);
        } 

        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
        internal static CodeDomProvider GetCodeDomProvider(SupportedLanguages language, string compilerVersion)
        { 
            if (language == SupportedLanguages.CSharp)
            { 
                return GetCodeProviderInstance(typeof(CSharpCodeProvider), compilerVersion); 
            }
            else 
            {
                return GetCodeProviderInstance(typeof(VBCodeProvider), compilerVersion);
            }
        } 

        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")] 
        internal static SupportedLanguages GetSupportedLanguage(IServiceProvider serviceProvider) 
        {
            SupportedLanguages supportedLanguage = SupportedLanguages.CSharp; 
            IWorkflowCompilerOptionsService workflowCompilerOptions = serviceProvider.GetService(typeof(IWorkflowCompilerOptionsService)) as IWorkflowCompilerOptionsService;
            if (workflowCompilerOptions != null)
                supportedLanguage = GetSupportedLanguage(workflowCompilerOptions.Language);
            return supportedLanguage; 
        }
 
        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")] 
        internal static SupportedLanguages GetSupportedLanguage(string language)
        { 
            SupportedLanguages supportedLanguage = SupportedLanguages.CSharp;
            if (!String.IsNullOrEmpty(language) &&
                (string.Compare(language, "VB", StringComparison.OrdinalIgnoreCase) == 0 ||
                string.Compare(language, "VisualBasic", StringComparison.OrdinalIgnoreCase) == 0)) 
                supportedLanguage = SupportedLanguages.VB;
            return supportedLanguage; 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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CompilerHelpers.cs source code in C# .NET

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