public Func <object, object> CreateDelegate(Type fromType, Type toType, IFormatProvider provider)
{
var convertDynamicMethod = new DynamicMethod(String.Concat("ConvertFrom", fromType.Name, "To", toType.Name, "NonGeneric"),
typeof(object), new[] { typeof(IFormatProvider), typeof(object) }, typeof(ConverterFactory).Module, true);
var il = new ILGeneratorAdapter(this.mapCfg);
il.Emit(OpCodes.Ldarg_1);
il.Emit(fromType.IsValueType ? OpCodes.Unbox_Any : OpCodes.Castclass, fromType); // cast input to correct type
il.EmitConvertValue(fromType, toType, new HashSet <Type>());
il.Emit(OpCodes.Box, toType);
il.Emit(OpCodes.Ret);
return((Func <object, object>)CompileDynamicMethod <Func <object, object> >(convertDynamicMethod, il.Instructions, provider));
}
public Converter <TFrom, TTo> CreateDelegate <TFrom, TTo>(IFormatProvider provider)
{
var toType = typeof(TTo);
var fromType = typeof(TFrom);
var convertDynamicMethod = new DynamicMethod(String.Concat("ConvertFrom", fromType.Name, "To", toType.Name),
toType, new[] { typeof(IFormatProvider), fromType }, typeof(ConverterFactory).Module, true);
var il = new ILGeneratorAdapter(this.mapCfg);
il.Emit(OpCodes.Ldarg_1);
il.EmitConvertValue(fromType, toType, new HashSet <Type>());
il.Emit(OpCodes.Ret);
return((Converter <TFrom, TTo>)CompileDynamicMethod <Converter <TFrom, TTo> >(convertDynamicMethod, il.Instructions, provider));
}
private ILInstruction[] GetTryParseInstructions <TTo>() where TTo : struct
{
var toType = typeof(TTo);
MethodInfo tryParse = toType.GetMethods(BindingFlags.Static | BindingFlags.Public)
.Where(m => m.Name == "TryParse" && m.GetParameters().Length == 2).FirstOrDefault();
var ilGenerator = new ILGeneratorAdapter(this);
if (tryParse != null)
{
var toLocal = ilGenerator.DeclareLocal(toType);
ilGenerator.EmitLocal(OpCodes.Ldloca, toLocal);
ilGenerator.EmitCall(OpCodes.Call, tryParse);
ilGenerator.Emit(OpCodes.Pop);
ilGenerator.EmitLocal(OpCodes.Ldloc, toLocal);
}
return(ilGenerator.Instructions);
}
public void Setup()
{
this.ilgenerator = new ILGeneratorAdapter(new MapConfiguration());
}
