private static void EmitOpImplicit(TypeGenerator typeGen)
{
ParameterInfo[] methodParams = new ParameterInfo[] { new ParameterInfo("val", 0, typeof(object)) };
var methodGen = typeGen.DefineMethod("op_Implicit", MethodAttributes.SpecialName | MethodAttributes.Static | MethodAttributes.HideBySig | MethodAttributes.Public, methodParams, typeGen);
methodGen.SyntaxBody = new BlockStatement(new NodeList <Statement>
{
Statement.Return(Expression.New(typeGen, Expression.Parameter(methodParams[0])))
});
}
private void EmitToStringMethod()
{
var toStringMethod = typeGen.DefineMethod("ToString", MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.Virtual, new ParameterInfo[0], typeof(string));
toStringMethod.SyntaxBody = new BlockStatement(new NodeList <Statement>
{
Statement.If(Expression.IsInstanceOf(Expression.Member(valueField), null), Statement.Return(Expression.SystemLiteral(string.Empty))),
Statement.Return(Expression.Call(Expression.Member(valueField), typeof(object).GetInstanceMethod("ToString")))
});
}
private static void EmitOpAddition(TypeGenerator typeGen)
{
ParameterInfo[] methodParams = new ParameterInfo[] { new ParameterInfo("left", 0, typeGen), new ParameterInfo("right", 1, typeGen) };
var methodGen = typeGen.DefineMethod("op_Addition", MethodAttributes.SpecialName | MethodAttributes.Static | MethodAttributes.HideBySig | MethodAttributes.Public, methodParams, typeGen);
methodGen.SyntaxBody = new BlockStatement(new NodeList <Statement>
{
Statement.Return(Expression.Custom((e, g) => {
e.Type = typeof(int);
g.LoadInt32(10);
}))
});
}