/// <summary>
/// Enumerates PHP routines contained in the specified method list. Filters out methods that
/// didn't implement PHP routines (they are not argless or argfull overloads).
/// </summary>
internal static void EnumerateRoutines(MethodInfo[] /*!*/ methods, RoutineEnumCallback /*!*/ callback)
{
// TODO: can be done in a better way
Dictionary <string, MethodInfo> arg_less_table = new Dictionary <string, MethodInfo>(
methods.Length / 2, // at most one half of all methods are supposed to be user routines
StringComparer.OrdinalIgnoreCase);
// adds arg-less overloads to the hashtable:
foreach (MethodInfo method in methods)
{
if (PhpFunctionUtils.IsArglessStub(method, null))
{
arg_less_table[method.Name] = method;
}
}
// searches for matching argfulls:
foreach (MethodInfo method in methods)
{
ParameterInfo[] parameters = method.GetParameters();
// skips arg-less overloads:
if (PhpFunctionUtils.IsArglessStub(method, parameters))
{
continue;
}
// skips methods that hasn't a matching arg-less overload:
MethodInfo argless;
if (!arg_less_table.TryGetValue(method.Name, out argless))
{
continue;
}
// yields the pair:
callback(argless, method, parameters);
}
}
/// <summary>
/// Traces the calling stack to discover current PHP class context.
/// </summary>
/// <returns><see cref="Type"/> of the PHP class that represents current class context for this thread or
/// <B>null</B> if this thread is executing in a function or startup Main context.</returns>
public static DTypeDesc GetClassContext()
{
// SILVERLIGHT: Todo Todo .. ? what to do here ?
#if !SILVERLIGHT
StackTrace stack_trace = new StackTrace(1);
int frame_count = stack_trace.FrameCount;
for (int i = 0; i < frame_count; i++)
{
StackFrame stack_frame = stack_trace.GetFrame(i);
MethodBase method = stack_frame.GetMethod();
Type type = method.DeclaringType;
if (type != null)
{
if (PhpType.IsPhpRealType(type))
{
return(DTypeDesc.Create(type));
}
MethodInfo minfo = method as MethodInfo;
if (minfo != null)
{
ParameterInfo[] parameters = minfo.GetParameters();
if (!PhpFunctionUtils.IsArglessStub(minfo, parameters) &&
PhpScript.IsScriptType(minfo.DeclaringType) && !PhpScript.IsMainHelper(minfo, parameters))
{
return(null);
}
// if the method is a helper method (Main, an arg-less overload, a constructor, etc.),
// continue with the trace
}
}
}
#endif
return(null);
}
