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// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
//
// 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.CSharp;
using ICSharpCode.NRefactory.PatternMatching;
using Mono.Cecil;
namespace ICSharpCode.Decompiler.Ast.Transforms
{
/// <summary>
/// Transforms decimal constant fields.
/// </summary>
public class DecimalConstantTransform : DepthFirstAstVisitor<object, object>, IAstTransform
{
static readonly PrimitiveType decimalType = new PrimitiveType("decimal");
public override object VisitFieldDeclaration(FieldDeclaration fieldDeclaration, object data)
{
const Modifiers staticReadOnly = Modifiers.Static | Modifiers.Readonly;
if ((fieldDeclaration.Modifiers & staticReadOnly) == staticReadOnly && decimalType.IsMatch(fieldDeclaration.ReturnType)) {
foreach (var attributeSection in fieldDeclaration.Attributes) {
foreach (var attribute in attributeSection.Attributes) {
TypeReference tr = attribute.Type.Annotation<TypeReference>();
if (tr != null && tr.Name == "DecimalConstantAttribute" && tr.Namespace == "System.Runtime.CompilerServices") {
attribute.Remove();
if (attributeSection.Attributes.Count == 0)
attributeSection.Remove();
fieldDeclaration.Modifiers = (fieldDeclaration.Modifiers & ~staticReadOnly) | Modifiers.Const;
return null;
}
}
}
}
return null;
}
public void Run(AstNode compilationUnit)
{
compilationUnit.AcceptVisitor(this, null);
}
}
}
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