diff options
Diffstat (limited to 'main/src/addins/CSharpBinding/Util/SpeculationAnalyzer.cs')
| -rw-r--r-- | main/src/addins/CSharpBinding/Util/SpeculationAnalyzer.cs | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/main/src/addins/CSharpBinding/Util/SpeculationAnalyzer.cs b/main/src/addins/CSharpBinding/Util/SpeculationAnalyzer.cs new file mode 100644 index 0000000000..cbca2f38cd --- /dev/null +++ b/main/src/addins/CSharpBinding/Util/SpeculationAnalyzer.cs @@ -0,0 +1,137 @@ +// +// SpeculationAnalyzer.cs +// +// Author: +// Mike Krüger <mkrueger@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.Collections.Generic; +using System.Linq; +using System.Text; +using System.Threading; +using System.Threading.Tasks; +using System.Reflection; +using System.Runtime.ExceptionServices; +using Microsoft.CodeAnalysis; +using Microsoft.CodeAnalysis.CSharp.Syntax; +using Microsoft.CodeAnalysis.CSharp; + +namespace ICSharpCode.NRefactory6.CSharp +{ + class SpeculationAnalyzer + { + readonly static Type typeInfo; + readonly static MethodInfo symbolsForOriginalAndReplacedNodesAreCompatibleMethod; + readonly static MethodInfo replacementChangesSemanticsMethod; + readonly object instance; + + static SpeculationAnalyzer () + { + Type[] abstractSpeculationAnalyzerGenericParams = new[] { + Type.GetType ("Microsoft.CodeAnalysis.SyntaxNode" + ReflectionNamespaces.CAAsmName, true), + Type.GetType ("Microsoft.CodeAnalysis.CSharp.Syntax.ExpressionSyntax" + ReflectionNamespaces.CACSharpAsmName, true), + Type.GetType ("Microsoft.CodeAnalysis.CSharp.Syntax.TypeSyntax" + ReflectionNamespaces.CACSharpAsmName, true), + Type.GetType ("Microsoft.CodeAnalysis.CSharp.Syntax.AttributeSyntax" + ReflectionNamespaces.CACSharpAsmName, true), + Type.GetType ("Microsoft.CodeAnalysis.CSharp.Syntax.ArgumentSyntax" + ReflectionNamespaces.CACSharpAsmName, true), + Type.GetType ("Microsoft.CodeAnalysis.CSharp.Syntax.ForEachStatementSyntax" + ReflectionNamespaces.CACSharpAsmName, true), + Type.GetType ("Microsoft.CodeAnalysis.CSharp.Syntax.ThrowStatementSyntax" + ReflectionNamespaces.CACSharpAsmName, true), + Type.GetType ("Microsoft.CodeAnalysis.SemanticModel" + ReflectionNamespaces.CAAsmName, true), + Type.GetType ("Microsoft.CodeAnalysis.CSharp.Conversion" + ReflectionNamespaces.CACSharpAsmName, true) + }; + typeInfo = Type.GetType ("Microsoft.CodeAnalysis.Shared.Utilities.AbstractSpeculationAnalyzer`9" + ReflectionNamespaces.WorkspacesAsmName, true) + .MakeGenericType (abstractSpeculationAnalyzerGenericParams); + + symbolsForOriginalAndReplacedNodesAreCompatibleMethod = typeInfo.GetMethod ("SymbolsForOriginalAndReplacedNodesAreCompatible", BindingFlags.Public | BindingFlags.Instance); + replacementChangesSemanticsMethod = typeInfo.GetMethod ("ReplacementChangesSemantics", BindingFlags.Public | BindingFlags.Instance); + symbolInfosAreCompatibleMethod = typeInfo.GetMethod ("SymbolInfosAreCompatible", BindingFlags.Public | BindingFlags.Static); + + typeInfo = Type.GetType ("Microsoft.CodeAnalysis.CSharp.Utilities.SpeculationAnalyzer" + ReflectionNamespaces.CSWorkspacesAsmName, true); + createSpeculativeSemanticModelForNodeMethod = typeInfo.GetMethod ("CreateSpeculativeSemanticModelForNode", BindingFlags.Public | BindingFlags.Static, null, new [] {typeof (SyntaxNode), typeof (SyntaxNode), typeof (SemanticModel)}, null); + } + + public SpeculationAnalyzer (ExpressionSyntax expression, ExpressionSyntax newExpression, SemanticModel semanticModel, CancellationToken cancellationToken, bool skipVerificationForReplacedNode = false, bool failOnOverloadResolutionFailuresInOriginalCode = false) + { + instance = Activator.CreateInstance (typeInfo, new object[] { + expression, + newExpression, + semanticModel, + cancellationToken, + skipVerificationForReplacedNode, + failOnOverloadResolutionFailuresInOriginalCode + }); + } + + static MethodInfo symbolInfosAreCompatibleMethod; + + public static bool SymbolInfosAreCompatible(SymbolInfo originalSymbolInfo, SymbolInfo newSymbolInfo, bool performEquivalenceCheck, bool requireNonNullSymbols = false) + { + try { + return (bool)symbolInfosAreCompatibleMethod.Invoke (null, new object [] { originalSymbolInfo, newSymbolInfo, performEquivalenceCheck, requireNonNullSymbols }); + } catch (TargetInvocationException ex) { + ExceptionDispatchInfo.Capture(ex.InnerException).Throw(); + return false; + } + } + + public bool SymbolsForOriginalAndReplacedNodesAreCompatible () + { + try { + return (bool)symbolsForOriginalAndReplacedNodesAreCompatibleMethod.Invoke (instance, new object[0]); + } catch (TargetInvocationException ex) { + ExceptionDispatchInfo.Capture(ex.InnerException).Throw(); + return false; + } + } + + public bool ReplacementChangesSemantics () + { + try { + return (bool)replacementChangesSemanticsMethod.Invoke (instance, new object[0]); + } catch (TargetInvocationException ex) { + ExceptionDispatchInfo.Capture(ex.InnerException).Throw(); + return false; + } + } + + readonly static MethodInfo createSpeculativeSemanticModelForNodeMethod; + + public static SemanticModel CreateSpeculativeSemanticModelForNode(SyntaxNode originalNode, SyntaxNode nodeToSpeculate, SemanticModel semanticModel) + { + return (SemanticModel)createSpeculativeSemanticModelForNodeMethod.Invoke (null, new object[] {originalNode, nodeToSpeculate, semanticModel }); + } + + public static bool CanSpeculateOnNode(SyntaxNode node) + { + return (node is StatementSyntax && node.Kind() != SyntaxKind.Block) || + node is TypeSyntax || + node is CrefSyntax || + node.Kind() == SyntaxKind.Attribute || + node.Kind() == SyntaxKind.ThisConstructorInitializer || + node.Kind() == SyntaxKind.BaseConstructorInitializer || + node.Kind() == SyntaxKind.EqualsValueClause || + node.Kind() == SyntaxKind.ArrowExpressionClause; + } + + } + +} |