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//
// SyntaxContext.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2014 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 System.Collections.Generic;
using Microsoft.CodeAnalysis;
using System.Threading;
using Microsoft.CodeAnalysis.Simplification;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
namespace ICSharpCode.NRefactory6.CSharp
{
class SyntaxContext
{
readonly CSharpSyntaxContext ctx;
readonly List<ITypeSymbol> inferredTypes;
public CSharpSyntaxContext CSharpSyntaxContext {
get {
return ctx;
}
}
public SemanticModel SemanticModel { get; internal set; }
public List<ITypeSymbol> InferredTypes {
get {
return inferredTypes;
}
}
public SyntaxToken LeftToken {
get {
return ctx.LeftToken;
}
}
public SyntaxToken TargetToken {
get {
return ctx.TargetToken;
}
}
public bool IsIsOrAsTypeContext {
get {
return ctx.IsIsOrAsTypeContext;
}
}
public bool IsInstanceContext {
get {
return ctx.IsInstanceContext;
}
}
public bool IsNonAttributeExpressionContext {
get {
return ctx.IsNonAttributeExpressionContext;
}
}
public bool IsPreProcessorKeywordContext {
get {
return ctx.IsPreProcessorKeywordContext;
}
}
public bool IsPreProcessorExpressionContext {
get {
return ctx.IsPreProcessorExpressionContext;
}
}
public TypeDeclarationSyntax ContainingTypeDeclaration {
get {
return ctx.ContainingTypeDeclaration;
}
}
public bool IsGlobalStatementContext {
get {
return ctx.IsGlobalStatementContext;
}
}
public bool IsParameterTypeContext {
get {
return ctx.IsParameterTypeContext;
}
}
public SyntaxTree SyntaxTree {
get {
return ctx.SyntaxTree;
}
}
public bool IsInsideNamingContext (bool isRightAfterIdentifier)
{
var parent = ctx.TargetToken.Parent;
if (isRightAfterIdentifier) {
return parent.IsKind(SyntaxKind.IdentifierName) ||
parent.IsKind(SyntaxKind.PredefinedType);
}
if (parent.IsKind(SyntaxKind.NamespaceDeclaration)) {
return !ctx.TargetToken.IsKind(SyntaxKind.OpenBraceToken);
}
return parent.IsKind(SyntaxKind.IdentifierName) && (
parent.Parent.IsKind(SyntaxKind.Parameter) ||
parent.Parent.IsKind(SyntaxKind.ArrayType) ||
parent.Parent.IsKind(SyntaxKind.VariableDeclaration) ||
parent.Parent.IsKind(SyntaxKind.ForEachStatement)
);
}
SyntaxContext(CSharpSyntaxContext ctx, List<ITypeSymbol> inferredTypes)
{
this.inferredTypes = inferredTypes;
this.ctx = ctx;
}
static readonly CSharpTypeInferenceService inferenceService = new CSharpTypeInferenceService ();
public static CSharpTypeInferenceService InferenceService {
get {
return inferenceService;
}
}
public static SyntaxContext Create(Workspace workspace, Document document, SemanticModel semanticModel, int position, CancellationToken cancellationToken)
{
return new SyntaxContext(
CSharpSyntaxContext.CreateContext(workspace, semanticModel, position, cancellationToken),
inferenceService.InferTypes(semanticModel, position, cancellationToken).ToList()
);
}
public ITypeSymbol GetCurrentType(SemanticModel semanticModel)
{
foreach (var f in semanticModel.Compilation.GlobalNamespace.GetMembers()) {
foreach (var loc in f.Locations) {
if (loc.SourceTree.FilePath == SyntaxTree.FilePath) {
if (loc.SourceSpan == ContainingTypeDeclaration.Identifier.Span) {
return f as ITypeSymbol;
}
}
}
}
return null;
}
}
}
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