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//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// Copyright (c) 2008 - 2015 Jb Evain
// Copyright (c) 2008 - 2011 Novell, Inc.
//
// Licensed under the MIT/X11 license.
//
using System;
using System.Collections.Generic;
using System.Text;
namespace Mono.Cecil.Rocks {
public class DocCommentId
{
StringBuilder id;
DocCommentId ()
{
id = new StringBuilder ();
}
void WriteField (FieldDefinition field)
{
WriteDefinition ('F', field);
}
void WriteEvent (EventDefinition @event)
{
WriteDefinition ('E', @event);
}
void WriteType (TypeDefinition type)
{
id.Append ('T').Append (':');
WriteTypeFullName (type);
}
void WriteMethod (MethodDefinition method)
{
WriteDefinition ('M', method);
if (method.HasGenericParameters) {
id.Append ('`').Append ('`');
id.Append (method.GenericParameters.Count);
}
if (method.HasParameters)
WriteParameters (method.Parameters);
if (IsConversionOperator (method))
WriteReturnType (method);
}
static bool IsConversionOperator (MethodDefinition self)
{
if (self == null)
throw new ArgumentNullException ("self");
return self.IsSpecialName
&& (self.Name == "op_Explicit" || self.Name == "op_Implicit");
}
void WriteReturnType (MethodDefinition method)
{
id.Append ('~');
WriteTypeSignature (method.ReturnType);
}
void WriteProperty (PropertyDefinition property)
{
WriteDefinition ('P', property);
if (property.HasParameters)
WriteParameters (property.Parameters);
}
void WriteParameters (IList<ParameterDefinition> parameters)
{
id.Append ('(');
WriteList (parameters, p => WriteTypeSignature (p.ParameterType));
id.Append (')');
}
void WriteTypeSignature (TypeReference type)
{
switch (type.MetadataType)
{
case MetadataType.Array:
WriteArrayTypeSignature ((ArrayType) type);
break;
case MetadataType.ByReference:
WriteTypeSignature (((ByReferenceType) type).ElementType);
id.Append ('@');
break;
case MetadataType.FunctionPointer:
WriteFunctionPointerTypeSignature ((FunctionPointerType) type);
break;
case MetadataType.GenericInstance:
WriteGenericInstanceTypeSignature ((GenericInstanceType) type);
break;
case MetadataType.Var:
id.Append ('`');
id.Append (((GenericParameter) type).Position);
break;
case MetadataType.MVar:
id.Append ('`').Append ('`');
id.Append (((GenericParameter) type).Position);
break;
case MetadataType.OptionalModifier:
WriteModiferTypeSignature ((RequiredModifierType) type, '!');
break;
case MetadataType.RequiredModifier:
WriteModiferTypeSignature ((RequiredModifierType) type, '|');
break;
case MetadataType.Pointer:
WriteTypeSignature (((PointerType) type).ElementType);
id.Append ('*');
break;
default:
WriteTypeFullName (type);
break;
}
}
void WriteGenericInstanceTypeSignature (GenericInstanceType type)
{
WriteTypeSignature (type.ElementType);
id.Append ('{');
WriteList (type.GenericArguments, WriteTypeSignature);
id.Append ('}');
}
void WriteList<T> (IList<T> list, Action<T> action)
{
for (int i = 0; i < list.Count; i++) {
if (i > 0)
id.Append (',');
action (list [i]);
}
}
void WriteModiferTypeSignature (IModifierType type, char id)
{
WriteTypeSignature (type.ElementType);
this.id.Append (id);
WriteTypeSignature (type.ModifierType);
}
void WriteFunctionPointerTypeSignature (FunctionPointerType type)
{
id.Append ("=FUNC:");
WriteTypeFullName (type.ReturnType);
if (type.HasParameters)
WriteParameters (type.Parameters);
}
void WriteArrayTypeSignature (ArrayType type)
{
WriteTypeSignature (type.ElementType);
if (type.IsVector) {
id.Append ("[]");
return;
}
id.Append ("[");
WriteList (type.Dimensions, dimension => {
if (dimension.LowerBound.HasValue)
id.Append (dimension.LowerBound.Value);
id.Append (':');
if (dimension.UpperBound.HasValue)
id.Append (dimension.UpperBound.Value - (dimension.LowerBound.GetValueOrDefault () + 1));
});
id.Append ("]");
}
void WriteDefinition (char id, IMemberDefinition member)
{
this.id.Append (id)
.Append (':');
WriteTypeFullName (member.DeclaringType);
this.id.Append ('.');
WriteItemName (member.Name);
}
void WriteTypeFullName (TypeReference type)
{
if (type.DeclaringType != null) {
WriteTypeFullName (type.DeclaringType);
id.Append ('.');
}
if (!string.IsNullOrEmpty (type.Namespace)) {
id.Append (type.Namespace);
id.Append ('.');
}
id.Append (type.Name);
}
void WriteItemName (string name)
{
id.Append (name.Replace ('.', '#'));
}
public override string ToString ()
{
return id.ToString ();
}
public static string GetDocCommentId (IMemberDefinition member)
{
if (member == null)
throw new ArgumentNullException ("member");
var documentId = new DocCommentId ();
switch (member.MetadataToken.TokenType)
{
case TokenType.Field:
documentId.WriteField ((FieldDefinition) member);
break;
case TokenType.Method:
documentId.WriteMethod ((MethodDefinition) member);
break;
case TokenType.TypeDef:
documentId.WriteType ((TypeDefinition) member);
break;
case TokenType.Event:
documentId.WriteEvent ((EventDefinition) member);
break;
case TokenType.Property:
documentId.WriteProperty ((PropertyDefinition) member);
break;
default:
throw new NotSupportedException (member.FullName);
}
return documentId.ToString ();
}
}
}
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