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101 lines
4.0 KiB
101 lines
4.0 KiB
// |
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// RedundantNamespaceUsageInspector.cs |
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// |
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// Author: |
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// Mike Krüger <mkrueger@xamarin.com> |
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// |
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// Copyright (c) 2012 Xamarin <http://xamarin.com> |
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// |
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// Permission is hereby granted, free of charge, to any person obtaining a copy |
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// of this software and associated documentation files (the "Software"), to deal |
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// in the Software without restriction, including without limitation the rights |
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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// copies of the Software, and to permit persons to whom the Software is |
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// furnished to do so, subject to the following conditions: |
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// |
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// The above copyright notice and this permission notice shall be included in |
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// all copies or substantial portions of the Software. |
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// |
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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// THE SOFTWARE. |
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using ICSharpCode.NRefactory.Semantics; |
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using ICSharpCode.NRefactory.TypeSystem; |
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namespace ICSharpCode.NRefactory.CSharp.Refactoring |
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{ |
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/// <summary> |
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/// Finds redundant namespace usages. |
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/// </summary> |
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[IssueDescription("Remove redundant namespace usages", |
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Description = "Removes namespace usages that are obsolete.", |
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Category = IssueCategories.Redundancies, |
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Severity = Severity.Hint, |
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IssueMarker = IssueMarker.GrayOut)] |
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public class RedundantNamespaceUsageIssue : ICodeIssueProvider |
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{ |
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public IEnumerable<CodeIssue> GetIssues(BaseRefactoringContext context) |
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{ |
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return new GatherVisitor(context, this).GetIssues(); |
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} |
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class GatherVisitor : GatherVisitorBase |
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{ |
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readonly RedundantNamespaceUsageIssue inspector; |
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public GatherVisitor (BaseRefactoringContext ctx, RedundantNamespaceUsageIssue inspector) : base (ctx) |
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{ |
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this.inspector = inspector; |
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} |
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public override void VisitMemberReferenceExpression(MemberReferenceExpression memberReferenceExpression) |
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{ |
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base.VisitMemberReferenceExpression(memberReferenceExpression); |
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HandleMemberReference( |
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memberReferenceExpression, memberReferenceExpression.Target, memberReferenceExpression.MemberNameToken, memberReferenceExpression.TypeArguments, NameLookupMode.Expression, |
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script => { |
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script.Replace(memberReferenceExpression, RefactoringAstHelper.RemoveTarget(memberReferenceExpression)); |
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}); |
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} |
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public override void VisitMemberType(MemberType memberType) |
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{ |
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base.VisitMemberType(memberType); |
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HandleMemberReference( |
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memberType, memberType.Target, memberType.MemberNameToken, memberType.TypeArguments, NameLookupMode.Type, |
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script => { |
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script.Replace(memberType, RefactoringAstHelper.RemoveTarget(memberType)); |
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}); |
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} |
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void HandleMemberReference(AstNode wholeNode, AstNode targetNode, Identifier memberName, IEnumerable<AstType> typeArguments, NameLookupMode mode, Action<Script> action) |
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{ |
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var result = ctx.Resolve(targetNode); |
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if (!(result is NamespaceResolveResult)) { |
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return; |
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} |
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var wholeResult = ctx.Resolve(wholeNode); |
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if (!(wholeResult is TypeResolveResult)) { |
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return; |
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} |
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var state = ctx.GetResolverStateBefore(wholeNode); |
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var resolvedTypeArguments = typeArguments.Select(ctx.ResolveType).ToList(); |
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var lookupName = state.LookupSimpleNameOrTypeName(memberName.Name, resolvedTypeArguments, mode); |
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if (lookupName is TypeResolveResult && !lookupName.IsError && wholeResult.Type.Equals(lookupName.Type)) { |
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AddIssue(wholeNode.StartLocation, memberName.StartLocation, ctx.TranslateString("Remove redundant namespace usage"), action); |
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} |
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} |
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} |
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} |
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}
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