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//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// Copyright (c) 2008 - 2015 Jb Evain
// Copyright (c) 2008 - 2011 Novell, Inc.
//
// Licensed under the MIT/X11 license.
//
using System;
using Mono.Collections.Generic;
namespace Mono.Cecil.Cil {
public sealed class ILProcessor {
readonly MethodBody body;
readonly Collection<Instruction> instructions;
public MethodBody Body {
get { return body; }
}
internal ILProcessor (MethodBody body)
{
this.body = body;
this.instructions = body.Instructions;
}
public Instruction Create (OpCode opcode)
{
return Instruction.Create (opcode);
}
public Instruction Create (OpCode opcode, TypeReference type)
{
return Instruction.Create (opcode, type);
}
public Instruction Create (OpCode opcode, CallSite site)
{
return Instruction.Create (opcode, site);
}
public Instruction Create (OpCode opcode, MethodReference method)
{
return Instruction.Create (opcode, method);
}
public Instruction Create (OpCode opcode, FieldReference field)
{
return Instruction.Create (opcode, field);
}
public Instruction Create (OpCode opcode, string value)
{
return Instruction.Create (opcode, value);
}
public Instruction Create (OpCode opcode, sbyte value)
{
return Instruction.Create (opcode, value);
}
public Instruction Create (OpCode opcode, byte value)
{
if (opcode.OperandType == OperandType.ShortInlineVar)
return Instruction.Create (opcode, body.Variables [value]);
if (opcode.OperandType == OperandType.ShortInlineArg)
return Instruction.Create (opcode, body.GetParameter (value));
return Instruction.Create (opcode, value);
}
public Instruction Create (OpCode opcode, int value)
{
if (opcode.OperandType == OperandType.InlineVar)
return Instruction.Create (opcode, body.Variables [value]);
if (opcode.OperandType == OperandType.InlineArg)
return Instruction.Create (opcode, body.GetParameter (value));
return Instruction.Create (opcode, value);
}
public Instruction Create (OpCode opcode, long value)
{
return Instruction.Create (opcode, value);
}
public Instruction Create (OpCode opcode, float value)
{
return Instruction.Create (opcode, value);
}
public Instruction Create (OpCode opcode, double value)
{
return Instruction.Create (opcode, value);
}
public Instruction Create (OpCode opcode, Instruction target)
{
return Instruction.Create (opcode, target);
}
public Instruction Create (OpCode opcode, Instruction [] targets)
{
return Instruction.Create (opcode, targets);
}
public Instruction Create (OpCode opcode, VariableDefinition variable)
{
return Instruction.Create (opcode, variable);
}
public Instruction Create (OpCode opcode, ParameterDefinition parameter)
{
return Instruction.Create (opcode, parameter);
}
public void Emit (OpCode opcode)
{
Append (Create (opcode));
}
public void Emit (OpCode opcode, TypeReference type)
{
Append (Create (opcode, type));
}
public void Emit (OpCode opcode, MethodReference method)
{
Append (Create (opcode, method));
}
public void Emit (OpCode opcode, CallSite site)
{
Append (Create (opcode, site));
}
public void Emit (OpCode opcode, FieldReference field)
{
Append (Create (opcode, field));
}
public void Emit (OpCode opcode, string value)
{
Append (Create (opcode, value));
}
public void Emit (OpCode opcode, byte value)
{
Append (Create (opcode, value));
}
public void Emit (OpCode opcode, sbyte value)
{
Append (Create (opcode, value));
}
public void Emit (OpCode opcode, int value)
{
Append (Create (opcode, value));
}
public void Emit (OpCode opcode, long value)
{
Append (Create (opcode, value));
}
public void Emit (OpCode opcode, float value)
{
Append (Create (opcode, value));
}
public void Emit (OpCode opcode, double value)
{
Append (Create (opcode, value));
}
public void Emit (OpCode opcode, Instruction target)
{
Append (Create (opcode, target));
}
public void Emit (OpCode opcode, Instruction [] targets)
{
Append (Create (opcode, targets));
}
public void Emit (OpCode opcode, VariableDefinition variable)
{
Append (Create (opcode, variable));
}
public void Emit (OpCode opcode, ParameterDefinition parameter)
{
Append (Create (opcode, parameter));
}
public void InsertBefore (Instruction target, Instruction instruction)
{
if (target == null)
throw new ArgumentNullException ("target");
if (instruction == null)
throw new ArgumentNullException ("instruction");
var index = instructions.IndexOf (target);
if (index == -1)
throw new ArgumentOutOfRangeException ("target");
instructions.Insert (index, instruction);
}
public void InsertAfter (Instruction target, Instruction instruction)
{
if (target == null)
throw new ArgumentNullException ("target");
if (instruction == null)
throw new ArgumentNullException ("instruction");
var index = instructions.IndexOf (target);
if (index == -1)
throw new ArgumentOutOfRangeException ("target");
instructions.Insert (index + 1, instruction);
}
public void Append (Instruction instruction)
{
if (instruction == null)
throw new ArgumentNullException ("instruction");
instructions.Add (instruction);
}
public void Replace (Instruction target, Instruction instruction)
{
if (target == null)
throw new ArgumentNullException ("target");
if (instruction == null)
throw new ArgumentNullException ("instruction");
InsertAfter (target, instruction);
Remove (target);
}
public void Remove (Instruction instruction)
{
if (instruction == null)
throw new ArgumentNullException ("instruction");
if (!instructions.Remove (instruction))
throw new ArgumentOutOfRangeException ("instruction");
}
}
}
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