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//
// MethodAtCaret.cs
//
// Author:
// Matt Ward <matt.ward@xamarin.com>
//
// Copyright (c) 2015 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 System.Linq;
using MonoDevelop.Ide.Gui;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Text;
using Microsoft.CodeAnalysis.CSharp;
namespace MonoDevelop.AspNet.Commands
{
class MethodDeclarationAtCaret
{
MethodDeclarationAtCaret ()
{
}
public static readonly MethodDeclarationAtCaret NullMethodDeclaration = new MethodDeclarationAtCaret ();
public bool IsMethodFound {
get {
return TypeDeclaration != null && MethodDeclaration != null;
}
}
public TypeDeclarationSyntax TypeDeclaration { get; private set; }
public MethodDeclarationSyntax MethodDeclaration { get; private set; }
public string Name {
get {
if (MethodDeclaration != null)
return MethodDeclaration.Identifier.ValueText;
return String.Empty;
}
}
public static MethodDeclarationAtCaret Create (MonoDevelop.Ide.Gui.Document doc)
{
var parsedDocument = doc.AnalysisDocument;
if (parsedDocument == null)
return NullMethodDeclaration;
SyntaxNode root = null;
if (!parsedDocument.TryGetSyntaxRoot (out root))
return NullMethodDeclaration;
SyntaxNode currentNode;
try {
int caretOffset = doc.Editor.CaretOffset;
currentNode = root.FindNode (TextSpan.FromBounds (caretOffset, caretOffset));
} catch (Exception) {
return NullMethodDeclaration;
}
var currentType = currentNode.AncestorsAndSelf ().OfType<TypeDeclarationSyntax> ().FirstOrDefault ();
var currentMethod = currentNode.AncestorsAndSelf ().OfType<MethodDeclarationSyntax> ().FirstOrDefault ();
return new MethodDeclarationAtCaret {
TypeDeclaration = currentType,
MethodDeclaration = currentMethod
};
}
public bool IsParentMvcController ()
{
return TypeDeclaration.Identifier.ValueText.EndsWith ("Controller", StringComparison.OrdinalIgnoreCase);
}
public bool IsMvcViewMethod ()
{
var correctReturnTypes = new [] { "ActionResult", "ViewResultBase", "ViewResult", "PartialViewResult" };
string returnTypeName = MethodDeclaration.ReturnType.ToString ();
return MethodDeclaration.Modifiers.Any (t => t.Kind () == SyntaxKind.PublicKeyword) &&
correctReturnTypes.Any (t => t == returnTypeName);
}
public string GetParentMvcControllerName ()
{
if (TypeDeclaration == null)
return String.Empty;
string controllerName = TypeDeclaration.Identifier.ValueText;
int pos = controllerName.LastIndexOf ("Controller", StringComparison.Ordinal);
if (pos > 0)
controllerName = controllerName.Remove (pos);
return controllerName;
}
}
}
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