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//
// MethodReference.cs
//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// Copyright (c) 2008 - 2010 Jb Evain
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Text;
using Mono.Collections.Generic;
namespace Mono.Cecil {
public class MethodReference : MemberReference, IMethodSignature, IGenericParameterProvider, IGenericContext {
internal ParameterDefinitionCollection parameters;
MethodReturnType return_type;
bool has_this;
bool explicit_this;
MethodCallingConvention calling_convention;
internal Collection<GenericParameter> generic_parameters;
public virtual bool HasThis {
get { return has_this; }
set { has_this = value; }
}
public virtual bool ExplicitThis {
get { return explicit_this; }
set { explicit_this = value; }
}
public virtual MethodCallingConvention CallingConvention {
get { return calling_convention; }
set { calling_convention = value; }
}
public virtual bool HasParameters {
get { return !parameters.IsNullOrEmpty (); }
}
public virtual Collection<ParameterDefinition> Parameters {
get {
if (parameters == null)
parameters = new ParameterDefinitionCollection (this);
return parameters;
}
}
IGenericParameterProvider IGenericContext.Type {
get {
var declaring_type = this.DeclaringType;
var instance = declaring_type as GenericInstanceType;
if (instance != null)
return instance.ElementType;
return declaring_type;
}
}
IGenericParameterProvider IGenericContext.Method {
get { return this; }
}
GenericParameterType IGenericParameterProvider.GenericParameterType {
get { return GenericParameterType.Method; }
}
public virtual bool HasGenericParameters {
get { return !generic_parameters.IsNullOrEmpty (); }
}
public virtual Collection<GenericParameter> GenericParameters {
get {
if (generic_parameters != null)
return generic_parameters;
return generic_parameters = new Collection<GenericParameter> ();
}
}
public TypeReference ReturnType {
get {
var return_type = MethodReturnType;
return return_type != null ? return_type.ReturnType : null;
}
set {
var return_type = MethodReturnType;
if (return_type != null)
return_type.ReturnType = value;
}
}
public virtual MethodReturnType MethodReturnType {
get { return return_type; }
set { return_type = value; }
}
public override string FullName {
get {
var builder = new StringBuilder ();
builder.Append (ReturnType.FullName)
.Append (" ")
.Append (MemberFullName ());
this.MethodSignatureFullName (builder);
return builder.ToString ();
}
}
public virtual bool IsGenericInstance {
get { return false; }
}
internal override bool ContainsGenericParameter {
get {
if (this.ReturnType.ContainsGenericParameter || base.ContainsGenericParameter)
return true;
var parameters = this.Parameters;
for (int i = 0; i < parameters.Count; i++)
if (parameters [i].ParameterType.ContainsGenericParameter)
return true;
return false;
}
}
internal MethodReference ()
{
this.return_type = new MethodReturnType (this);
this.token = new MetadataToken (TokenType.MemberRef);
}
public MethodReference (string name, TypeReference returnType)
: base (name)
{
if (returnType == null)
throw new ArgumentNullException ("returnType");
this.return_type = new MethodReturnType (this);
this.return_type.ReturnType = returnType;
this.token = new MetadataToken (TokenType.MemberRef);
}
public MethodReference (string name, TypeReference returnType, TypeReference declaringType)
: this (name, returnType)
{
if (declaringType == null)
throw new ArgumentNullException ("declaringType");
this.DeclaringType = declaringType;
}
public virtual MethodReference GetElementMethod ()
{
return this;
}
public virtual MethodDefinition Resolve ()
{
var module = this.Module;
if (module == null)
throw new NotSupportedException ();
return module.Resolve (this);
}
}
static partial class Mixin {
public static bool IsVarArg (this IMethodSignature self)
{
return (self.CallingConvention & MethodCallingConvention.VarArg) != 0;
}
public static int GetSentinelPosition (this IMethodSignature self)
{
if (!self.HasParameters)
return -1;
var parameters = self.Parameters;
for (int i = 0; i < parameters.Count; i++)
if (parameters [i].ParameterType.IsSentinel)
return i;
return -1;
}
}
}
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