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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Description
{
using System;
using System.CodeDom;
using System.Collections.Generic;
using System.Globalization;
using System.Runtime;
using System.Text;
class UniqueCodeIdentifierScope
{
const int MaxIdentifierLength = 511;
SortedList<string, string> names;
// assumes identifier is valid
protected virtual void AddIdentifier(string identifier)
{
if (names == null)
names = new SortedList<string, string>(StringComparer.OrdinalIgnoreCase);
names.Add(identifier, identifier);
}
// assumes identifier is valid
public void AddReserved(string identifier)
{
Fx.Assert(IsUnique(identifier), "");
AddIdentifier(identifier);
}
// validates name before trying to add
public string AddUnique(string name, string defaultName)
{
string validIdentifier = MakeValid(name, defaultName);
string uniqueIdentifier = validIdentifier;
int i = 1;
while (!IsUnique(uniqueIdentifier))
{
uniqueIdentifier = validIdentifier + (i++).ToString(CultureInfo.InvariantCulture);
}
AddIdentifier(uniqueIdentifier);
return uniqueIdentifier;
}
// assumes identifier is valid
public virtual bool IsUnique(string identifier)
{
return names == null || !names.ContainsKey(identifier);
}
static bool IsValidStart(char c)
{
return (Char.GetUnicodeCategory(c) != UnicodeCategory.DecimalDigitNumber);
}
static bool IsValid(char c)
{
UnicodeCategory uc = Char.GetUnicodeCategory(c);
// each char must be Lu, Ll, Lt, Lm, Lo, Nd, Mn, Mc, Pc
switch (uc)
{
case UnicodeCategory.UppercaseLetter: // Lu
case UnicodeCategory.LowercaseLetter: // Ll
case UnicodeCategory.TitlecaseLetter: // Lt
case UnicodeCategory.ModifierLetter: // Lm
case UnicodeCategory.OtherLetter: // Lo
case UnicodeCategory.DecimalDigitNumber: // Nd
case UnicodeCategory.NonSpacingMark: // Mn
case UnicodeCategory.SpacingCombiningMark: // Mc
case UnicodeCategory.ConnectorPunctuation: // Pc
return true;
default:
return false;
}
}
public static string MakeValid(string identifier, string defaultIdentifier)
{
if (String.IsNullOrEmpty(identifier))
return defaultIdentifier;
if (identifier.Length <= MaxIdentifierLength && System.CodeDom.Compiler.CodeGenerator.IsValidLanguageIndependentIdentifier(identifier))
return identifier;
StringBuilder builder = new StringBuilder();
for (int i = 0; i < identifier.Length && builder.Length < MaxIdentifierLength; i++)
{
char c = identifier[i];
if (IsValid(c))
{
if (builder.Length == 0)
{
// check for valid start char
if (!IsValidStart(c))
builder.Append('_');
}
builder.Append(c);
}
}
if (builder.Length == 0)
return defaultIdentifier;
return builder.ToString();
}
}
class UniqueCodeNamespaceScope : UniqueCodeIdentifierScope
{
CodeNamespace codeNamespace;
// possible direction: add an option to cache for multi-use cases
public UniqueCodeNamespaceScope(CodeNamespace codeNamespace)
{
this.codeNamespace = codeNamespace;
}
public CodeNamespace CodeNamespace
{
get { return this.codeNamespace; }
}
protected override void AddIdentifier(string identifier)
{
}
public CodeTypeReference AddUnique(CodeTypeDeclaration codeType, string name, string defaultName)
{
codeType.Name = base.AddUnique(name, defaultName);
codeNamespace.Types.Add(codeType);
return ServiceContractGenerator.NamespaceHelper.GetCodeTypeReference(this.codeNamespace, codeType);
}
public override bool IsUnique(string identifier)
{
return !NamespaceContainsType(identifier);
}
bool NamespaceContainsType(string typeName)
{
foreach (CodeTypeDeclaration codeType in codeNamespace.Types)
{
if (String.Compare(codeType.Name, typeName, StringComparison.OrdinalIgnoreCase) == 0)
{
return true;
}
}
return false;
}
}
}
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