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// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
//
// 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.Collections.Generic;
using System.Linq;
using ICSharpCode.NRefactory.Semantics;
using ICSharpCode.NRefactory.TypeSystem;
namespace ICSharpCode.NRefactory.CSharp.Resolver
{
/// <summary>
/// Represents the result of a method, constructor or indexer invocation.
/// Provides additional C#-specific information for InvocationResolveResult.
/// </summary>
public class CSharpInvocationResolveResult : InvocationResolveResult
{
public readonly OverloadResolutionErrors OverloadResolutionErrors;
/// <summary>
/// Gets whether this invocation is calling an extension method using extension method syntax.
/// </summary>
public readonly bool IsExtensionMethodInvocation;
/// <summary>
/// Gets whether this invocation is calling a delegate (without explicitly calling ".Invoke()").
/// </summary>
public readonly bool IsDelegateInvocation;
/// <summary>
/// Gets whether a params-Array is being used in its expanded form.
/// </summary>
public readonly bool IsExpandedForm;
readonly IList<int> argumentToParameterMap;
/// <summary>
/// If IsExtensionMethodInvocation is true this property holds the reduced method.
/// </summary>
IMethod reducedMethod;
public IMethod ReducedMethod {
get {
if (!IsExtensionMethodInvocation)
return null;
if (reducedMethod == null && Member is IMethod)
reducedMethod = new ReducedExtensionMethod ((IMethod)Member);
return reducedMethod;
}
}
public CSharpInvocationResolveResult(
ResolveResult targetResult, IParameterizedMember member,
IList<ResolveResult> arguments,
OverloadResolutionErrors overloadResolutionErrors = OverloadResolutionErrors.None,
bool isExtensionMethodInvocation = false,
bool isExpandedForm = false,
bool isDelegateInvocation = false,
IList<int> argumentToParameterMap = null,
IList<ResolveResult> initializerStatements = null,
IType returnTypeOverride = null
)
: base(targetResult, member, arguments, initializerStatements, returnTypeOverride)
{
this.OverloadResolutionErrors = overloadResolutionErrors;
this.IsExtensionMethodInvocation = isExtensionMethodInvocation;
this.IsExpandedForm = isExpandedForm;
this.IsDelegateInvocation = isDelegateInvocation;
this.argumentToParameterMap = argumentToParameterMap;
}
public override bool IsError {
get { return this.OverloadResolutionErrors != OverloadResolutionErrors.None; }
}
/// <summary>
/// Gets an array that maps argument indices to parameter indices.
/// For arguments that could not be mapped to any parameter, the value will be -1.
///
/// parameterIndex = ArgumentToParameterMap[argumentIndex]
/// </summary>
public IList<int> GetArgumentToParameterMap()
{
return argumentToParameterMap;
}
public override IList<ResolveResult> GetArgumentsForCall()
{
ResolveResult[] results = new ResolveResult[Member.Parameters.Count];
List<ResolveResult> paramsArguments = IsExpandedForm ? new List<ResolveResult>() : null;
// map arguments to parameters:
for (int i = 0; i < Arguments.Count; i++) {
int mappedTo;
if (argumentToParameterMap != null)
mappedTo = argumentToParameterMap[i];
else
mappedTo = IsExpandedForm ? Math.Min(i, results.Length - 1) : i;
if (mappedTo >= 0 && mappedTo < results.Length) {
if (IsExpandedForm && mappedTo == results.Length - 1) {
paramsArguments.Add(Arguments[i]);
} else {
var narr = Arguments[i] as NamedArgumentResolveResult;
if (narr != null)
results[mappedTo] = narr.Argument;
else
results[mappedTo] = Arguments[i];
}
}
}
if (IsExpandedForm){
IType arrayType = Member.Parameters.Last().Type;
IType int32 = Member.Compilation.FindType(KnownTypeCode.Int32);
ResolveResult[] sizeArguments = { new ConstantResolveResult(int32, paramsArguments.Count) };
results[results.Length - 1] = new ArrayCreateResolveResult(arrayType, sizeArguments, paramsArguments);
}
for (int i = 0; i < results.Length; i++) {
if (results[i] == null) {
if (Member.Parameters[i].IsOptional) {
results[i] = new ConstantResolveResult(Member.Parameters[i].Type, Member.Parameters[i].ConstantValue);
} else {
results[i] = ErrorResolveResult.UnknownError;
}
}
}
return results;
}
}
}
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