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#region license
//
// (C) 2005 - 2007 db4objects Inc. http://www.db4o.com
// (C) 2007 - 2008 Novell, Inc. http://www.novell.com
// (C) 2007 - 2008 Jb Evain http://evain.net
//
// 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.
//
#endregion
using System;
using System.IO;
using Mono.Cecil;
using Mono.Cecil.Cil;
namespace Cecil.Decompiler.Cil {
public static class Formatter {
public static string FormatInstruction (Instruction instruction)
{
StringWriter writer = new StringWriter ();
WriteInstruction (writer, instruction);
return writer.ToString ();
}
public static string FormatMethodBody (MethodDefinition method)
{
StringWriter writer = new StringWriter ();
WriteMethodBody (writer, method);
return writer.ToString ();
}
public static void WriteMethodBody (TextWriter writer, MethodDefinition method)
{
writer.WriteLine (method);
foreach (Instruction instruction in method.Body.Instructions) {
writer.Write ('\t');
WriteInstruction (writer, instruction);
writer.WriteLine ();
}
}
public static void WriteInstruction (TextWriter writer, Instruction instruction)
{
writer.Write (FormatLabel (instruction.Offset));
writer.Write (": ");
writer.Write (instruction.OpCode.Name);
if (null != instruction.Operand) {
writer.Write (' ');
WriteOperand (writer, instruction.Operand);
}
}
private static string FormatLabel (int offset)
{
string label = "000" + offset.ToString ("x");
return "IL_" + label.Substring (label.Length - 4);
}
private static void WriteOperand (TextWriter writer, object operand)
{
if (null == operand) throw new ArgumentNullException ("operand");
Instruction targetInstruction = operand as Instruction;
if (null != targetInstruction) {
writer.Write (FormatLabel (targetInstruction.Offset));
return;
}
Instruction [] targetInstructions = operand as Instruction [];
if (null != targetInstructions) {
WriteLabelList (writer, targetInstructions);
return;
}
VariableReference variableRef = operand as VariableReference;
if (null != variableRef) {
writer.Write (variableRef.Index.ToString ());
return;
}
MethodReference methodRef = operand as MethodReference;
if (null != methodRef) {
WriteMethodReference (writer, methodRef);
return;
}
string s = operand as string;
if (null != s) {
writer.Write ("\"" + s + "\"");
return;
}
s = ToInvariantCultureString (operand);
writer.Write (s);
}
static void WriteLabelList (TextWriter writer, Instruction [] instructions)
{
writer.Write ("(");
for (int i = 0; i < instructions.Length; i++) {
if (i != 0) writer.Write (", ");
writer.Write (FormatLabel (instructions [i].Offset));
}
writer.Write (")");
}
public static string ToInvariantCultureString (object value)
{
IConvertible convertible = value as IConvertible;
return (null != convertible)
? convertible.ToString (System.Globalization.CultureInfo.InvariantCulture)
: value.ToString ();
}
private static void WriteMethodReference (TextWriter writer, MethodReference method)
{
writer.Write (FormatTypeReference (method.ReturnType.ReturnType));
writer.Write (' ');
writer.Write (FormatTypeReference (method.DeclaringType));
writer.Write ("::");
writer.Write (method.Name);
writer.Write ("(");
ParameterDefinitionCollection parameters = method.Parameters;
for (int i=0; i < parameters.Count; ++i) {
if (i > 0) writer.Write (", ");
writer.Write (FormatTypeReference (parameters [i].ParameterType));
}
writer.Write (")");
}
public static string FormatTypeReference (TypeReference type)
{
string typeName = type.FullName;
switch (typeName) {
case "System.Void": return "void";
case "System.String": return "string";
case "System.Int32": return "int32";
case "System.Long": return "int64";
case "System.Boolean": return "bool";
case "System.Single": return "float32";
case "System.Double": return "float64";
}
return typeName;
}
}
}
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