|
private TryBindOuter ( |
||
| from | ||
| reference | ||
| variable | ||
| Результат | bool | |
internal override PythonVariable BindReference(PythonNameBinder binder, PythonReference reference)
{
PythonVariable variable;
// First try variables local to this scope
if (TryGetVariable(reference.Name, out variable))
{
if (variable.Kind == VariableKind.Global)
{
AddReferencedGlobal(reference.Name);
}
return(variable);
}
// Try to bind in outer scopes
for (ScopeStatement parent = Parent; parent != null; parent = parent.Parent)
{
if (parent.TryBindOuter(this, reference, out variable))
{
return(variable);
}
}
return(null);
}
internal override PythonVariable BindReference(PythonNameBinder binder, PythonReference reference)
{
PythonVariable variable;
// Python semantics: The variables bound local in the class
// scope are accessed by name - the dictionary behavior of classes
if (TryGetVariable(reference.Name, out variable))
{
// TODO: This results in doing a dictionary lookup to get/set the local,
// when it should probably be an uninitialized check / global lookup for gets
// and a direct set
if (variable.Kind == VariableKind.Global)
{
AddReferencedGlobal(reference.Name);
}
else if (variable.Kind == VariableKind.Local)
{
return(null);
}
return(variable);
}
// Try to bind in outer scopes, if we have an unqualified exec we need to leave the
// variables as free for the same reason that locals are accessed by name.
for (ScopeStatement parent = Parent; parent != null; parent = parent.Parent)
{
if (parent.TryBindOuter(this, reference, out variable))
{
return(variable);
}
}
return(null);
}
internal override PythonVariable BindReference(PythonNameBinder binder, PythonReference reference)
{
// First try variables local to this scope
if (TryGetVariable(reference.Name, out PythonVariable variable))
{
if (variable.Kind == VariableKind.Global)
{
AddReferencedGlobal(reference.Name);
}
Debug.Assert(variable.Kind != VariableKind.Nonlocal, "there should be no nonlocals in a comprehension");
return(variable);
}
// then try to bind in outer scopes
for (ScopeStatement parent = Parent; parent != null; parent = parent.Parent)
{
if (parent.TryBindOuter(this, reference, out variable))
{
return(variable);
}
}
return(null);
}
