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//
// RaiseEventMethodGenerator.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2012 Xamarin <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 MonoDevelop.Core;
using MonoDevelop.Ide.Gui;
using Gtk;
using System.Collections.Generic;
using MonoDevelop.Refactoring;
using System.Text;
using System.Linq;
using Microsoft.CodeAnalysis;
using ICSharpCode.NRefactory6.CSharp;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using MonoDevelop.Ide.TypeSystem;
namespace MonoDevelop.CodeGeneration
{
class RaiseEventMethodGenerator : ICodeGenerator
{
public string Icon {
get {
return "md-event";
}
}
public string Text {
get {
return GettextCatalog.GetString ("Event OnXXX method");
}
}
public string GenerateDescription {
get {
return GettextCatalog.GetString ("Select event to generate the method for.");
}
}
public bool IsValid (CodeGenerationOptions options)
{
return new CreateEventMethod (options).IsValid ();
}
public IGenerateAction InitalizeSelection (CodeGenerationOptions options, Gtk.TreeView treeView)
{
var createEventMethod = new CreateEventMethod (options);
createEventMethod.Initialize (treeView);
return createEventMethod;
}
class CreateEventMethod : AbstractGenerateAction
{
const string handlerName = "handler";
public CreateEventMethod (CodeGenerationOptions options) : base (options)
{
}
static string GetEventMethodName (ISymbol member)
{
return "On" + member.Name;
}
protected override IEnumerable<object> GetValidMembers ()
{
if (Options.EnclosingType == null || Options.EnclosingMember != null)
yield break;
foreach (IEventSymbol e in Options.EnclosingType.GetMembers ().OfType<IEventSymbol> ()) {
if (e.IsImplicitlyDeclared)
continue;
var invokeMethod = e.GetReturnType ().GetDelegateInvokeMethod ();
if (invokeMethod == null)
continue;
if (Options.EnclosingType.GetMembers ().OfType<IMethodSymbol> ().Any (m => m.Name == GetEventMethodName (e)))
continue;
yield return e;
}
}
protected override IEnumerable<string> GenerateCode (List<object> includedMembers)
{
foreach (IEventSymbol member in includedMembers) {
var invokeMethod = member.GetReturnType ().GetDelegateInvokeMethod ();
if (invokeMethod == null)
continue;
var node = SyntaxFactory.MethodDeclaration (
SyntaxFactory.PredefinedType (SyntaxFactory.Token (SyntaxKind.VoidKeyword)),
SyntaxFactory.Identifier (GetEventMethodName (member))
);
node = node.WithModifiers (SyntaxFactory.TokenList (SyntaxFactory.Token (SyntaxKind.ProtectedKeyword), SyntaxFactory.Token (SyntaxKind.VirtualKeyword)));
node = node.WithParameterList (SyntaxFactory.ParameterList (SyntaxFactory.SeparatedList<ParameterSyntax> (new [] {
SyntaxFactory.Parameter (SyntaxFactory.Identifier (invokeMethod.Parameters [1].Name)).WithType (SyntaxFactory.ParseTypeName (Options.CreateShortType (invokeMethod.Parameters [1].Type)))
})));
bool csharp6Style = true;
;
if (csharp6Style) {
var expressionSyntax = SyntaxFactory.ParseExpression ("foo?.bar") as ConditionalAccessExpressionSyntax;
Console.WriteLine (expressionSyntax.OperatorToken.Kind ());
Console.WriteLine (expressionSyntax.Expression.GetType ());
Console.WriteLine (expressionSyntax.WhenNotNull.GetType ());
node = node.WithBody (SyntaxFactory.Block (
SyntaxFactory.ExpressionStatement (
SyntaxFactory.InvocationExpression (
SyntaxFactory.ConditionalAccessExpression (
SyntaxFactory.MemberAccessExpression (
SyntaxKind.SimpleMemberAccessExpression,
SyntaxFactory.ThisExpression (),
SyntaxFactory.IdentifierName (member.Name)
),
SyntaxFactory.MemberBindingExpression (SyntaxFactory.IdentifierName ("Invoke"))
),
SyntaxFactory.ArgumentList (
SyntaxFactory.SeparatedList<ArgumentSyntax> (new [] {
SyntaxFactory.Argument (SyntaxFactory.ThisExpression ()),
SyntaxFactory.Argument (SyntaxFactory.IdentifierName (invokeMethod.Parameters [1].Name))
})
)
)
)
));
} else {
node = node.WithBody (SyntaxFactory.Block (
SyntaxFactory.LocalDeclarationStatement (
SyntaxFactory.VariableDeclaration (
SyntaxFactory.ParseTypeName ("var"),
SyntaxFactory.SeparatedList<VariableDeclaratorSyntax> (new [] {
SyntaxFactory.VariableDeclarator (SyntaxFactory.Identifier (handlerName)).WithInitializer (
SyntaxFactory.EqualsValueClause (
SyntaxFactory.MemberAccessExpression (
SyntaxKind.SimpleMemberAccessExpression,
SyntaxFactory.ThisExpression (),
SyntaxFactory.IdentifierName (member.Name)
)
)
)
})
)
),
SyntaxFactory.IfStatement (
SyntaxFactory.BinaryExpression (
SyntaxKind.NotEqualsExpression,
SyntaxFactory.IdentifierName (handlerName),
SyntaxFactory.ParseExpression ("null")
),
SyntaxFactory.ExpressionStatement (
SyntaxFactory.InvocationExpression (
SyntaxFactory.IdentifierName (handlerName),
SyntaxFactory.ArgumentList (
SyntaxFactory.SeparatedList<ArgumentSyntax> (new [] {
SyntaxFactory.Argument (SyntaxFactory.ThisExpression ()),
SyntaxFactory.Argument (SyntaxFactory.IdentifierName (invokeMethod.Parameters [1].Name))
})
)
)
)
)
));
}
yield return Options.OutputNode (node).Result;
}
}
}
}
}
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