/// <summary>
/// Attempts to bind this callback to its target.
/// </summary>
/// <param name="quiet"><B>true</B> of no errors should be thrown, <B>false</B> otherwise.</param>
/// <param name="nameContext">Current <see cref="NamingContext"/> for function and class name resolution.</param>
/// <param name="caller">Current class context or a <see cref="UnknownTypeDesc"/> if the class context
/// should be determined ad-hoc.</param>
/// <returns><B>True</B> if the callback was successfully bound, <B>false</B> if an error occured.</returns>
public bool Bind(bool quiet, DTypeDesc caller, NamingContext nameContext)
{
if (IsInvalid)
{
return(false);
}
switch (state)
{
case State.UnboundFunction:
{
if (context == null)
{
context = ScriptContext.CurrentContext;
}
routineDesc = context.ResolveFunction(targetName, nameContext, quiet);
if (routineDesc == null)
{
return(false);
}
state = State.Bound;
return(true);
}
case State.UnboundStaticMethod:
{
if (context == null)
{
context = ScriptContext.CurrentContext;
}
if (caller != null && caller.IsUnknown)
{
callingContext = PhpStackTrace.GetClassContext();
}
else
{
callingContext = caller;
}
// try to find the CLR method
// find the class according to className
ResolveTypeFlags flags = ResolveTypeFlags.UseAutoload;
if (!quiet)
{
flags |= ResolveTypeFlags.ThrowErrors;
}
DTypeDesc type = context.ResolveType(className, nameContext, callingContext, null, flags);
if (type == null)
{
return(false);
}
// find the method
bool is_caller_method;
lateStaticBindType = type;
routineDesc = Operators.GetStaticMethodDesc(type, targetName,
ref instance, callingContext, context, quiet, false, out is_caller_method);
if (routineDesc == null)
{
return(false);
}
if (instance != null)
{
dummyInstance = true;
}
state = is_caller_method ? State.BoundToCaller : State.Bound;
return(true);
}
case State.UnboundInstanceMethod:
{
if (caller != null && caller.IsUnknown)
{
callingContext = PhpStackTrace.GetClassContext();
}
else
{
callingContext = caller;
}
// ask the instance for a handle to the method
bool is_caller_method;
routineDesc = instance.GetMethodDesc(targetName, callingContext, quiet, out is_caller_method);
if (routineDesc == null)
{
return(false);
}
state = (is_caller_method ? State.BoundToCaller : State.Bound);
return(true);
}
}
return(true);
}