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//
// MethodSubroutine.cs
//
// Authors:
// Alexander Chebaturkin (chebaturkin@gmail.com)
//
// Copyright (C) 2011 Alexander Chebaturkin
//
// 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 Mono.CodeContracts.Static.AST;
using Mono.CodeContracts.Static.ControlFlow.Blocks;
using Mono.CodeContracts.Static.ControlFlow.Subroutines.Builders;
using Mono.CodeContracts.Static.Providers;
namespace Mono.CodeContracts.Static.ControlFlow.Subroutines {
class MethodSubroutine<Label, Handler> : SubroutineWithHandlers<Label, Handler>, IMethodInfo {
private readonly Method method;
private HashSet<BlockWithLabels<Label>> blocks_ending_in_return_point;
public MethodSubroutine (SubroutineFacade subroutineFacade, Method method)
: base (subroutineFacade)
{
this.method = method;
}
public MethodSubroutine (SubroutineFacade SubroutineFacade,
Method method, Label startLabel,
SubroutineWithHandlersBuilder<Label, Handler> builder) : base (SubroutineFacade, startLabel, builder)
{
this.method = method;
IMetaDataProvider metaDataProvider = this.SubroutineFacade.MetaDataProvider;
builder.BuildBlocks (startLabel, this);
BlockWithLabels<Label> targetBlock = GetTargetBlock (startLabel);
Commit ();
TypeNode type = metaDataProvider.DeclaringType (method);
Subroutine invariant = this.SubroutineFacade.GetInvariant (type);
if (invariant != null && !metaDataProvider.IsConstructor (method) && !metaDataProvider.IsStatic (method)) {
AddEdgeSubroutine (Entry, targetBlock, invariant, EdgeTag.Entry);
Subroutine requires = this.SubroutineFacade.GetRequires (method);
if (requires != null)
AddEdgeSubroutine (Entry, targetBlock, requires, EdgeTag.Entry);
} else
AddEdgeSubroutine (Entry, targetBlock, this.SubroutineFacade.GetRequires (method), EdgeTag.Entry);
if (this.blocks_ending_in_return_point == null)
return;
Subroutine ensures = this.SubroutineFacade.GetEnsures (method);
bool putInvariantAfterExit = !metaDataProvider.IsStatic (method)
&& !metaDataProvider.IsFinalizer (method) && !metaDataProvider.IsDispose (method);
foreach (var block in this.blocks_ending_in_return_point) {
if (putInvariantAfterExit)
AddEdgeSubroutine (block, Exit, invariant, EdgeTag.Exit);
AddEdgeSubroutine (block, Exit, ensures, EdgeTag.Exit);
}
if (ensures != null) {
throw new NotImplementedException();
}
this.blocks_ending_in_return_point = null;
}
#region Overrides of Subroutine
public override void Initialize ()
{
}
#endregion
#region Overrides of SubroutineBase<Label>
public override void AddReturnBlock (BlockWithLabels<Label> block)
{
if (this.blocks_ending_in_return_point == null)
this.blocks_ending_in_return_point = new HashSet<BlockWithLabels<Label>> ();
this.blocks_ending_in_return_point.Add (block);
base.AddReturnBlock (block);
}
#endregion
#region Implementation of IMethodInfo<Method>
public Method Method
{
get { return this.method; }
}
#endregion
public override SubroutineKind Kind
{
get { return SubroutineKind.Method; }
}
public override bool HasReturnValue
{
get { return !this.SubroutineFacade.MetaDataProvider.IsVoidMethod (this.method); }
}
public override bool IsMethod
{
get { return true; }
}
public override bool IsConstructor
{
get { return this.SubroutineFacade.MetaDataProvider.IsConstructor (this.method); }
}
public override string Name
{
get { return this.SubroutineFacade.MetaDataProvider.FullName (this.method); }
}
}
}
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