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ObjectCreationFactory.cs
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ObjectCreationFactory.cs
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/*
* SonarAnalyzer for .NET
* Copyright (C) 2015-2023 SonarSource SA
* mailto: contact AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
namespace SonarAnalyzer.Wrappers
{
internal interface IObjectCreation
{
InitializerExpressionSyntax Initializer { get; }
ArgumentListSyntax ArgumentList { get; }
ExpressionSyntax Expression { get; }
IEnumerable<ExpressionSyntax> InitializerExpressions { get; }
bool IsKnownType(KnownType knownType, SemanticModel semanticModel);
string TypeAsString(SemanticModel semanticModel);
ITypeSymbol TypeSymbol(SemanticModel semanticModel);
IMethodSymbol MethodSymbol(SemanticModel semanticModel);
}
internal class ObjectCreationFactory
{
public static IObjectCreation Create(SyntaxNode node) =>
node switch
{
null => throw new ArgumentNullException(nameof(node)),
ObjectCreationExpressionSyntax objectCreation => new ObjectCreation(objectCreation),
{ } when ImplicitObjectCreationExpressionSyntaxWrapper.IsInstance(node) => new ImplicitObjectCreation((ImplicitObjectCreationExpressionSyntaxWrapper)node),
_ => throw new InvalidOperationException("Unexpected type: " + node.GetType().Name)
};
public static IObjectCreation TryCreate(SyntaxNode node) =>
node.IsAnyKind(SyntaxKind.ObjectCreationExpression, SyntaxKindEx.ImplicitObjectCreationExpression)
? Create(node)
: null;
private class ObjectCreation : IObjectCreation
{
private readonly ObjectCreationExpressionSyntax objectCreation;
public InitializerExpressionSyntax Initializer => objectCreation.Initializer;
public ArgumentListSyntax ArgumentList => objectCreation.ArgumentList;
public ExpressionSyntax Expression => objectCreation;
public IEnumerable<ExpressionSyntax> InitializerExpressions => objectCreation.Initializer?.Expressions;
public ObjectCreation(ObjectCreationExpressionSyntax objectCreationExpressionSyntax) =>
objectCreation = objectCreationExpressionSyntax;
public bool IsKnownType(KnownType knownType, SemanticModel semanticModel) =>
objectCreation.Type.GetName().EndsWith(knownType.TypeName) && objectCreation.IsKnownType(knownType, semanticModel);
public string TypeAsString(SemanticModel semanticModel) =>
objectCreation.Type.ToString();
public ITypeSymbol TypeSymbol(SemanticModel semanticModel) =>
semanticModel.GetTypeInfo(objectCreation).Type;
public IMethodSymbol MethodSymbol(SemanticModel semanticModel) =>
semanticModel.GetSymbolInfo(objectCreation).Symbol as IMethodSymbol;
}
private class ImplicitObjectCreation : IObjectCreation
{
private readonly ImplicitObjectCreationExpressionSyntaxWrapper objectCreation;
public InitializerExpressionSyntax Initializer => objectCreation.Initializer;
public ArgumentListSyntax ArgumentList => objectCreation.ArgumentList;
public ExpressionSyntax Expression => objectCreation.SyntaxNode;
public IEnumerable<ExpressionSyntax> InitializerExpressions => objectCreation.Initializer?.Expressions;
public ImplicitObjectCreation(ImplicitObjectCreationExpressionSyntaxWrapper wrapper) =>
objectCreation = wrapper;
public bool IsKnownType(KnownType knownType, SemanticModel semanticModel) =>
semanticModel.GetTypeInfo(objectCreation).Type.Is(knownType);
public string TypeAsString(SemanticModel semanticModel) =>
TypeSymbol(semanticModel).Name;
public ITypeSymbol TypeSymbol(SemanticModel semanticModel) =>
semanticModel.GetTypeInfo(objectCreation).Type;
public IMethodSymbol MethodSymbol(SemanticModel semanticModel) =>
semanticModel.GetSymbolInfo(objectCreation).Symbol as IMethodSymbol;
}
}
}