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//
// InitializerPath.cs
//
// Author:
// Simon Lindgren <simon.n.lindgren@gmail.com>
//
// Copyright (c) 2012 Simon Lindgren
//
// 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 ICSharpCode.NRefactory.CSharp.Refactoring;
using ICSharpCode.NRefactory.TypeSystem;
using System.Collections.Generic;
using ICSharpCode.NRefactory.Semantics;
using System.Linq;
namespace ICSharpCode.NRefactory.CSharp.Refactoring
{
class AccessPath
{
public AccessPath(IVariable target)
{
VariableRoot = target;
MemberPath = new List<IMember>();
}
public static AccessPath FromResolveResult(ResolveResult resolveResult)
{
var memberPath = new List<IMember>();
var currentResolveResult = resolveResult;
do {
if (currentResolveResult is MemberResolveResult) {
var memberResolveResult = (MemberResolveResult)currentResolveResult;
memberPath.Add(memberResolveResult.Member);
currentResolveResult = memberResolveResult.TargetResult;
} else if (currentResolveResult is LocalResolveResult) {
// This is the root variable
var localResolveResult = (LocalResolveResult)currentResolveResult;
memberPath.Reverse();
return new AccessPath(localResolveResult.Variable) {
MemberPath = memberPath
};
} else if (currentResolveResult is ThisResolveResult) {
break;
} else {
// Unsupported path
return null;
}
} while (currentResolveResult != null);
memberPath.Reverse();
return new AccessPath(null) {
MemberPath = memberPath
};
}
public AccessPath GetParentPath()
{
if (MemberPath.Count < 1)
throw new InvalidOperationException("Cannot get the parent path of a path that does not contain any members.");
return new AccessPath(VariableRoot) {
MemberPath = MemberPath.Take(MemberPath.Count - 1).ToList()
};
}
public bool IsSubPath(AccessPath other)
{
if (!object.Equals(other.VariableRoot, VariableRoot))
return false;
if (MemberPath.Count <= other.MemberPath.Count)
return false;
for (int i = 0; i < other.MemberPath.Count; i++) {
if (MemberPath [i] != other.MemberPath [i])
return false;
}
return true;
}
public IVariable VariableRoot { get; set; }
public int PartCount {
get {
return MemberPath.Count + (VariableRoot == null ? 0 : 1);
}
}
public string RootName {
get {
if (VariableRoot != null)
return VariableRoot.Name;
return MemberPath.First().Name;
}
}
public IList<IMember> MemberPath { get; private set; }
public override bool Equals(object obj)
{
if (obj == null || obj.GetType() != typeof(AccessPath))
return false;
var other = (AccessPath)obj;
if (!object.Equals(VariableRoot, other.VariableRoot))
return false;
if (MemberPath.Count != other.MemberPath.Count)
return false;
for (int i = 0; i < MemberPath.Count; i++) {
if (!object.Equals(MemberPath [i], other.MemberPath [i]))
return false;
}
return true;
}
public override int GetHashCode()
{
int hash = VariableRoot != null ? VariableRoot.GetHashCode() : 37;
foreach (var member in MemberPath)
hash ^= 31 * member.GetHashCode();
return hash;
}
public static bool operator==(AccessPath left, AccessPath right)
{
return object.Equals(left, right);
}
public static bool operator!=(AccessPath left, AccessPath right)
{
return !object.Equals(left, right);
}
public override string ToString()
{
string memberPathString = string.Join(".", MemberPath.Select<IMember, string>(member => member.Name));
if (VariableRoot == null)
return string.Format("[AccessPath: {0}]", memberPathString);
return string.Format("[AccessPath: {0}.{1}]", VariableRoot.Name, memberPathString);
}
}
}
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