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//
// ConstructFixer.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2016 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.Editor;
using System.Text;
using System.Reflection;
using System.Linq;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Formatting;
using Microsoft.CodeAnalysis.Options;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp.Syntax;
namespace MonoDevelop.CSharp.Refactoring
{
abstract class ConstructCompleter
{
public abstract bool TryFix (ConstructFixer fixer, SyntaxNode syntaxTree, MonoDevelop.Ide.Gui.Document document, int location, ref int newOffset);
}
class InvocationCompleter : ConstructCompleter
{
public override bool TryFix (ConstructFixer fixer, SyntaxNode syntaxTree, Ide.Gui.Document document, int location, ref int newOffset)
{
foreach (var invocationExpression in syntaxTree.FindToken (location).Parent.AncestorsAndSelf ().OfType<InvocationExpressionSyntax> ()) {
if (invocationExpression != null) {
if (!invocationExpression.ArgumentList.OpenParenToken.IsMissing && invocationExpression.ArgumentList.CloseParenToken.IsMissing) {
var insertionOffset = invocationExpression.Span.End - 1;
newOffset = insertionOffset;
var text = ")";
newOffset++;
var expressionStatement = invocationExpression.Parent as ExpressionStatementSyntax;
if (expressionStatement != null) {
if (expressionStatement.SemicolonToken.IsMissing)
text = ");";
newOffset++;
}
document.Editor.InsertText (insertionOffset, text);
return true;
}
}
}
return false;
}
}
class BreakStatementCompleter : ConstructCompleter
{
public override bool TryFix (ConstructFixer fixer, SyntaxNode syntaxTree, Ide.Gui.Document document, int location, ref int newOffset)
{
foreach (var breakStatementSyntax in syntaxTree.FindToken (location).Parent.AncestorsAndSelf ().OfType<BreakStatementSyntax> ()) {
if (breakStatementSyntax.SemicolonToken.IsMissing) {
var insertionOffset = breakStatementSyntax.Span.End - 1;
newOffset = insertionOffset;
newOffset++;
document.Editor.InsertText (insertionOffset, ";");
return true;
}
}
foreach (var breakStatementSyntax in syntaxTree.FindToken (location).Parent.AncestorsAndSelf ().OfType<ContinueStatementSyntax> ()) {
if (breakStatementSyntax.SemicolonToken.IsMissing) {
var insertionOffset = breakStatementSyntax.Span.End - 1;
newOffset = insertionOffset;
newOffset++;
document.Editor.InsertText (insertionOffset, ";");
return true;
}
}
return false;
}
}
class ExpressionStatementCompleter : ConstructCompleter
{
public override bool TryFix (ConstructFixer fixer, SyntaxNode syntaxTree, Ide.Gui.Document document, int location, ref int newOffset)
{
foreach (var expressionStatement in syntaxTree.FindToken (location).Parent.AncestorsAndSelf ().OfType<ExpressionStatementSyntax> ()) {
if (expressionStatement.SemicolonToken.IsMissing) {
var insertionOffset = expressionStatement.Span.End - 1;
newOffset = insertionOffset;
newOffset++;
document.Editor.InsertText (insertionOffset, ";");
return true;
}
}
return false;
}
}
class ReturnStatementCompleter : ConstructCompleter
{
public override bool TryFix (ConstructFixer fixer, SyntaxNode syntaxTree, Ide.Gui.Document document, int location, ref int newOffset)
{
foreach (var throwStatement in syntaxTree.FindToken (location).Parent.AncestorsAndSelf ().OfType<ReturnStatementSyntax> ()) {
if (throwStatement.SemicolonToken.IsMissing) {
var insertionOffset = throwStatement.Span.End - 1;
newOffset = insertionOffset;
newOffset++;
document.Editor.InsertText (insertionOffset, ";");
return true;
}
}
return false;
}
}
class YieldReturnStatementCompleter : ConstructCompleter
{
public override bool TryFix (ConstructFixer fixer, SyntaxNode syntaxTree, Ide.Gui.Document document, int location, ref int newOffset)
{
foreach (var yieldStatement in syntaxTree.FindToken (location).Parent.AncestorsAndSelf ().OfType<YieldStatementSyntax> ()) {
if (yieldStatement.SemicolonToken.IsMissing) {
var insertionOffset = yieldStatement.Span.End - 1;
newOffset = insertionOffset;
newOffset++;
document.Editor.InsertText (insertionOffset, ";");
return true;
}
}
return false;
}
}
class ThrowStatementCompleter : ConstructCompleter
{
public override bool TryFix (ConstructFixer fixer, SyntaxNode syntaxTree, Ide.Gui.Document document, int location, ref int newOffset)
{
foreach (var throwStatement in syntaxTree.FindToken (location).Parent.AncestorsAndSelf ().OfType<ThrowStatementSyntax> ()) {
if (throwStatement.SemicolonToken.IsMissing) {
var insertionOffset = throwStatement.Span.End - 1;
newOffset = insertionOffset;
newOffset++;
document.Editor.InsertText (insertionOffset, ";");
return true;
}
}
return false;
}
}
public class ConstructFixer
{
static readonly ConstructCompleter [] completer = {
new BreakStatementCompleter (),
new ThrowStatementCompleter (),
new ReturnStatementCompleter (),
new YieldReturnStatementCompleter (),
new InvocationCompleter (),
new ExpressionStatementCompleter ()
};
// readonly OptionSet options;
public ConstructFixer (OptionSet options)
{
// this.options = options;
}
public async Task<int> TryFix (MonoDevelop.Ide.Gui.Document document, int offset, CancellationToken token)
{
int newOffset = offset;
var syntaxTree = await document.AnalysisDocument.GetSyntaxRootAsync (token);
foreach (var c in completer) {
if (c.TryFix (this, syntaxTree, document, offset, ref newOffset)) {
return newOffset;
}
}
return -1;
}
}
}
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