/// <summary>
/// Evaluates this chain as if it had the <see cref="PHP.Core.AST.AccessType.ReadRef"/> access type.
/// </summary>
/// <param name="context">Current script context.</param>
/// <returns>The result of chain evaluation.</returns>
public PhpReference GetReference(ScriptContext context)
{
PhpReference reference;
RuntimeChainElement element = Chain;
if (element == null)
{
// if we are just wrapping the variable with a PhpReference, make a copy
reference = Variable as PhpReference;
if (reference == null)
{
reference = new PhpReference(PhpVariable.Copy(Variable, CopyReason.Unknown));
}
return(reference);
}
// make sure that we have a PhpReference
reference = PhpVariable.MakeReference(Variable);
if (element == lastElement)
{
// GetPropertyRef/GetItemRef
return(element.GetRef(ref reference.value, context, Caller));
}
// EnsureVariableIsObject/EnsureVariableIsArray
object var = element.EnsureVariable(ref reference.value, context, Caller);
if (var == null)
{
return(new PhpReference());
}
while (element.Next != null)
{
// Ensure{Field,Item}Is{Object,Array}
var = element.Ensure(var, context, Caller);
if (var == null)
{
return(new PhpReference());
}
element = element.Next;
}
// GetObjectPropertyRef/GetArrayItemRef
return(element.GetEnsuredRef(var, context, Caller));
}
