Utils.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 / ndp / fx / src / DataEntityDesign / Design / System / Data / EntityModel / Emitters / Utils.cs / 1305376 / Utils.cs
                        

                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

using System; 
using System.Collections.Specialized;
using System.Collections.Generic;
using System.Text;
using System.Data; 
using System.Data.Metadata.Edm;
using System.Data.EntityModel.SchemaObjectModel; 
using System.Data.Entity.Design.Common; 
using System.Diagnostics;
using System.Reflection; 


namespace System.Data.EntityModel.Emitters
{ 
    /// 
    /// Summary description for Utils 
    ///  
    internal static class Utils
    { 
        #region Static Fields

        public const string AdoFrameworkNamespace = "System.Data.Objects";
        public const string AdoFrameworkDataClassesNamespace = "System.Data.Objects.DataClasses"; 
        public const string AdoFrameworkMetadataEdmNamespace = "System.Data.Metadata.Edm";
        public const string AdoEntityClientNamespace = "System.Data.EntityClient"; 
 
        public const string SetValidValueMethodName = "SetValidValue";
        public const string ReportPropertyChangingMethodName = "ReportPropertyChanging"; 
        public const string ReportPropertyChangedMethodName = "ReportPropertyChanged";
        public const string GetValidValueMethodName = "GetValidValue";
        public const string VerifyComplexObjectIsNotNullName = "VerifyComplexObjectIsNotNull";
 

        // to guarantee uniqueness these must all be unique, begin with and end with an underscore and not contain internal underscores 
        private static string[] _privateMemberPrefixes = new string[(int)PrivateMemberPrefixId.Count] 
        {
            "_", 
            "_Initialize_",
            "PropertyInfo",
            "_pi",
        }; 

        // suffix that is added to field names to create a boolean field used to indicate whether or 
        // not a complex property has been explicitly initialized 
        private static string _complexPropertyInitializedSuffix = "Initialized";
        private static List> _typeReservedNames = InitializeTypeReservedNames(); 

        /// 
        /// Initialize some statics that cannot be initialized in member declaration...
        ///  
        static List> InitializeTypeReservedNames()
        { 
            Dictionary typeReservedNames = new Dictionary(StringComparer.Ordinal); 
            BindingFlags bindingFlags = BindingFlags.FlattenHierarchy | BindingFlags.NonPublic | BindingFlags.Public
                    | BindingFlags.Instance | BindingFlags.Static; 
            foreach (MemberInfo member in TypeReference.ComplexTypeBaseClassType.GetMembers(bindingFlags))
            {
                if (ShouldReserveName(member))
                { 
                    if (!typeReservedNames.ContainsKey(member.Name))
                    { 
                        typeReservedNames.Add(member.Name, typeof(ComplexType)); 
                    }
                } 
            }

            foreach (MemberInfo member in TypeReference.EntityTypeBaseClassType.GetMembers(bindingFlags))
            { 
                if (ShouldReserveName(member))
                { 
                    if (typeReservedNames.ContainsKey(member.Name)) 
                    {
                        if (typeReservedNames[member.Name] == typeof(ComplexType)) 
                        {
                            // apply to all types
                            typeReservedNames[member.Name] = null;
                        } 
                    }
                    else 
                    { 
                        typeReservedNames.Add(member.Name, typeof(EntityType));
                    } 
                }
            }

            List> pairs = new List>(); 
            foreach (KeyValuePair pair in typeReservedNames)
            { 
                pairs.Add(pair); 
            }
 
            return pairs;
        }

        private static bool ShouldReserveName(MemberInfo member) 
        {
            if (member is EventInfo) 
            { 
                return ShouldReserveName((EventInfo)member);
            } 
            else if(member is FieldInfo)
            {
                return ShouldReserveName((FieldInfo)member);
            } 
            else if(member is MethodBase)
            { 
                return ShouldReserveName((MethodBase)member); 
            }
            else if(member is PropertyInfo) 
            {
                return ShouldReserveName((PropertyInfo)member);
            }
            else 
            {
                Debug.Assert(member is Type, "Did you add a new type of member?"); 
                return ShouldReserveName((Type)member); 
            }
 
        }

        private static bool ShouldReserveName(EventInfo member)
        { 
            bool hasNonPrivate = false;
 
            MethodInfo miAdd = member.GetAddMethod(); 
            if (miAdd != null)
            { 
                hasNonPrivate |= ShouldReserveName(miAdd, false);
            }

            MethodInfo miRemove = member.GetRemoveMethod(); 
            if (miRemove != null)
            { 
                hasNonPrivate |= ShouldReserveName(miRemove, false); 
            }
 
            return hasNonPrivate;
        }

        private static bool ShouldReserveName(PropertyInfo member) 
        {
            bool hasNonPrivate = false; 
 
            MethodInfo miSet = member.GetSetMethod();
            if (miSet != null) 
            {
                hasNonPrivate |= ShouldReserveName(miSet, false);
            }
 
            MethodInfo miGet = member.GetGetMethod();
            if (miGet != null) 
            { 
                hasNonPrivate |= ShouldReserveName(miGet, false);
            } 

            return hasNonPrivate;
        }
 
        private static bool ShouldReserveName(FieldInfo member)
        { 
            return !member.IsPrivate && !member.IsAssembly && 
                !member.IsSpecialName;
        } 

        private static bool ShouldReserveName(MethodBase member, bool checkForSpecial)
        {
            return !member.IsPrivate && !member.IsAssembly && 
                (!checkForSpecial || !member.IsSpecialName);
        } 
 
        private static bool ShouldReserveName(MethodBase member)
        { 
            return ShouldReserveName(member, true);
        }

        private static bool ShouldReserveName(Type member) 
        {
            // we don't want to keep types 
            return false; 
        }
        #endregion 

        #region Public Methods
        /// 
        /// 
        /// 
        ///  
        ///  
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Globalization", "CA1308:NormalizeStringsToUppercase")]
        public static string CamelCase(string text) 
        {
            if ( string.IsNullOrEmpty(text) )
                return text;
 
            if ( text.Length == 1 )
                return text[0].ToString(System.Globalization.CultureInfo.InvariantCulture).ToLowerInvariant(); 
 
            return text[0].ToString(System.Globalization.CultureInfo.InvariantCulture).ToLowerInvariant()+text.Substring(1);
        } 

        public static string FixParameterName(string name)
        {
            // FxCop consider 'iD' as violation, we will change any property that is 'id'(case insensitive) to 'ID' 
            if (StringComparer.OrdinalIgnoreCase.Equals(name, "id"))
            { 
                // it is an abreviation not an acronym so it should be all lower case 
                return "id";
            } 
            return CamelCase(name);
        }

        ///  
        ///
        ///  
        ///  
        /// 
        public static string FieldNameFromPropName(string propName) 
        {
            return PrivateMemberPrefix(PrivateMemberPrefixId.Field)+propName;
        }
 
        /// 
        /// Generate the name of a field that is used to indicate whether a complex property has been explicitly initialized 
        ///  
        /// Name of the property associated that with this field
        /// Generated field name 
        public static string ComplexPropertyInitializedNameFromPropName(string propName)
        {
            return FieldNameFromPropName(propName) + _complexPropertyInitializedSuffix;
        } 

        ///  
        /// get the prefix ussed for a private member 
        /// 
        ///  
        /// 
        public static string PrivateMemberPrefix(PrivateMemberPrefixId id)
        {
            return _privateMemberPrefixes[(int)id]; 
        }
 
        ///  
        ///
        ///  
        /// 
        /// 
        public static string FQAdoFrameworkName( string name )
        { 
            return AdoFrameworkNamespace + "." + name;
        } 
 
        /// 
        /// 
        /// 
        /// 
        /// 
        public static string FQAdoFrameworkDataClassesName( string name ) 
        {
            return AdoFrameworkDataClassesNamespace + "." + name; 
        } 

        ///  
        ///
        /// 
        /// unqualifed name of the type
        ///  
        public static string FQAdoFrameworkMetadataEdmName(string name)
        { 
            return AdoFrameworkMetadataEdmNamespace + "." + name; 
        }
 
        /// 
        ///
        /// 
        ///  
        /// 
        public static string FQAdoEntityClientName(string name) 
        { 
            return AdoEntityClientNamespace + "." + name;
        } 

        /// 
        ///
        ///  
        /// 
        ///  
        ///  
        public static bool TryGetPrimitiveTypeKind(EdmType type, out PrimitiveTypeKind modelType )
        { 
            if (!MetadataUtil.IsPrimitiveType(type))
            {
                // set it to something bogus because I have to
                modelType = PrimitiveTypeKind.Binary; 
                return false;
            } 
 
            modelType = ((PrimitiveType)type).PrimitiveTypeKind;
            return true; 
        }

        /// 
        /// 
        /// 
        ///  
        ///  
        public static string[] SplitName(string name)
        { 
            Debug.Assert(!string.IsNullOrEmpty(name), "name parameter is null or empty");

            if ( name.Length > 0 && name[0] == '.' )
                return name.Substring(1).Split('.'); 

            return name.Split('.'); 
        } 

        public static string GetFullyQualifiedCodeGenerationAttributeName(string attribute) 
        {
            return XmlConstants.CodeGenerationSchemaNamespace + ":" + attribute;
        }
 
        /// 
        /// check if a name is reserved for a type 
        ///  
        /// the object representing the schema type being defined
        /// the member name 
        /// true if the name is reserved by the type
        public static bool DoesTypeReserveMemberName(StructuralType type, string name, StringComparison comparison)
        {
            Type reservingType = null; 
            if (!TryGetReservedName(name,comparison, out reservingType))
            { 
                return false; 
            }
 
            // if reserving types is null it means the name is reserved for all types.
            if (reservingType == null)
            {
                return true; 
            }
 
            return (reservingType == type.GetType()); 
        }
 
        public static bool TryGetReservedName(string name, StringComparison comparison, out Type applyToSpecificType)
        {
            applyToSpecificType = null;
            foreach(KeyValuePair pair in _typeReservedNames) 
            {
                if (pair.Key.Equals(name, comparison)) 
                { 
                    applyToSpecificType = pair.Value;
                    return true; 
                }
            }

            return false; 
        }
 
 
        #endregion
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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