mirror of https://github.com/icsharpcode/ILSpy.git
Daniel Grunwald
11 years ago
15 changed files with 365 additions and 40 deletions
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// Copyright (c) 2014 Daniel Grunwald
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
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// software and associated documentation files (the "Software"), to deal in the Software
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// without restriction, including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
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// to whom the Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all copies or
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// substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System; |
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using System.Collections.Generic; |
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using Mono.Cecil; |
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using ICSharpCode.Decompiler.Disassembler; |
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namespace ICSharpCode.Decompiler.IL |
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{ |
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partial class ILFunction |
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{ |
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public readonly MethodDefinition Method; |
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public readonly IList<ILVariable> Variables = new List<ILVariable>(); |
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public ILFunction(MethodDefinition method, ILInstruction body) : base(OpCode.ILFunction) |
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{ |
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this.Body = body; |
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this.Method = method; |
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} |
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public override void WriteTo(ITextOutput output) |
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{ |
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output.Write(OpCode); |
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output.Write(' '); |
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Method.WriteTo(output); |
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output.WriteLine(" {"); |
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output.Indent(); |
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foreach (var variable in Variables) { |
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variable.WriteDefinitionTo(output); |
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output.WriteLine(); |
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} |
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output.WriteLine(); |
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body.WriteTo(output); |
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output.Unindent(); |
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output.WriteLine("}"); |
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} |
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protected override InstructionFlags ComputeFlags() |
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{ |
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// Creating a lambda may throw OutOfMemoryException
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return InstructionFlags.MayThrow; |
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} |
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internal override ILInstruction Inline(InstructionFlags flagsBefore, Stack<ILInstruction> instructionStack, out bool finished) |
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{ |
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// To the outside, lambda creation looks like a constant
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finished = true; |
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return this; |
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} |
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} |
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} |
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@ -0,0 +1,64 @@
@@ -0,0 +1,64 @@
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// Copyright (c) 2014 Daniel Grunwald
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
|
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// software and associated documentation files (the "Software"), to deal in the Software
|
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// without restriction, including without limitation the rights to use, copy, modify, merge,
|
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
|
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// to whom the Software is furnished to do so, subject to the following conditions:
|
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//
|
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// The above copyright notice and this permission notice shall be included in all copies or
|
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// substantial portions of the Software.
|
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//
|
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
|
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
|
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
|
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System; |
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using System.Diagnostics; |
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using Mono.Cecil; |
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namespace ICSharpCode.Decompiler.IL |
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{ |
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/// <summary>
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/// Visitor that applies a list of transformations to the IL Ast.
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/// </summary>
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public class TransformingVisitor : ILVisitor<ILInstruction> |
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{ |
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protected override ILInstruction Default(ILInstruction inst) |
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{ |
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inst.TransformChildren(this); |
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return inst; |
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} |
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protected internal override ILInstruction VisitBranch(Branch inst) |
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{ |
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// If this branch is the only edge to the target block, we can inline the target block here:
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if (inst.TargetBlock.IncomingEdgeCount == 1 && inst.PopCount == 0) { |
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return inst.TargetBlock; |
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} |
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return base.VisitBranch(inst); |
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} |
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protected internal override ILInstruction VisitBlockContainer(BlockContainer container) |
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{ |
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container.TransformChildren(this); |
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// VisitBranch() 'steals' blocks from containers. Remove all blocks that were stolen from the block list:
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Debug.Assert(container.EntryPoint.IncomingEdgeCount > 0); |
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container.Blocks.RemoveAll(b => b.IncomingEdgeCount == 0); |
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// If the container only contains a single block, and the block contents do not jump back to the block start,
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// we can remove the container.
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if (container.Blocks.Count == 1 && container.EntryPoint.IncomingEdgeCount == 1) { |
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// If the block has only one instruction, we can remove the block too
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if (container.EntryPoint.Instructions.Count == 1) |
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return container.EntryPoint.Instructions[0]; |
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return container.EntryPoint; |
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} |
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return container; |
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} |
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} |
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} |
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