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//
// StaticVisitor.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2012 Xamarin Inc. (http://xamarin.com)
//
// 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.Semantics;
using System.Linq;
using ICSharpCode.NRefactory.CSharp.Resolver;
namespace ICSharpCode.NRefactory.CSharp.Refactoring.ExtractMethod
{
class StaticVisitor : DepthFirstAstVisitor
{
readonly BaseRefactoringContext context;
public bool UsesNonStaticMember = false;
StaticVisitor(BaseRefactoringContext context)
{
this.context = context;
}
public static bool UsesNotStaticMember(BaseRefactoringContext context, AstNode node)
{
var visitor = new StaticVisitor(context);
node.AcceptVisitor(visitor);
return visitor.UsesNonStaticMember;
}
protected override void VisitChildren(AstNode node)
{
if (UsesNonStaticMember)
return;
base.VisitChildren(node);
}
public override void VisitThisReferenceExpression(ThisReferenceExpression thisReferenceExpression)
{
UsesNonStaticMember = true;
base.VisitThisReferenceExpression(thisReferenceExpression);
}
public override void VisitBaseReferenceExpression(BaseReferenceExpression baseReferenceExpression)
{
UsesNonStaticMember = true;
base.VisitBaseReferenceExpression(baseReferenceExpression);
}
public override void VisitIdentifierExpression(IdentifierExpression identifierExpression)
{
var resolveResult = context.Resolve(identifierExpression);
if (resolveResult is MemberResolveResult) {
var memberResult = (MemberResolveResult)resolveResult;
if (!memberResult.Member.IsStatic)
UsesNonStaticMember = true;
} else if (resolveResult is MethodGroupResolveResult) {
var methodGroupResolveResult = (MethodGroupResolveResult)resolveResult;
if (methodGroupResolveResult.Methods.Any(m => !m.IsStatic))
UsesNonStaticMember = true;
}
}
}
}
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