|
private AddGlobalVariable ( |
||
| variable | ||
| Результат | void | |
// GlobalStatement
public override bool Walk(GlobalStatement node)
{
node.Parent = _currentScope;
foreach (string n in node.Names)
{
PythonVariable conflict;
// Check current scope for conflicting variable
bool assignedGlobal = false;
if (_currentScope.TryGetVariable(n, out conflict))
{
// conflict?
switch (conflict.Kind)
{
case VariableKind.Global:
case VariableKind.Local:
assignedGlobal = true;
ReportSyntaxWarning($"name '{n}' is assigned to before global declaration", node);
break;
case VariableKind.Parameter:
ReportSyntaxError($"name '{n}' is local and global", node);
break;
}
}
// Check for the name being referenced previously. If it has been, issue warning.
if (_currentScope.IsReferenced(n) && !assignedGlobal)
{
ReportSyntaxWarning(
String.Format(
System.Globalization.CultureInfo.InvariantCulture,
"name '{0}' is used prior to global declaration",
n),
node);
}
// Create the variable in the global context and mark it as global
PythonVariable variable = _globalScope.EnsureGlobalVariable(n);
variable.Kind = VariableKind.Global;
if (conflict == null)
{
// no previously definied variables, add it to the current scope
_currentScope.AddGlobalVariable(variable);
}
}
return(true);
}
// GlobalStatement
public override bool Walk(GlobalStatement node)
{
node.Parent = _currentScope;
foreach (string n in node.Names)
{
PythonVariable conflict;
// Check current scope for conflicting variable
bool assignedGlobal = false;
if (_currentScope.TryGetVariable(n, out conflict))
{
// conflict?
switch (conflict.Kind)
{
case VariableKind.Global:
break;
case VariableKind.Local:
assignedGlobal = true;
ReportSyntaxError($"name '{n}' is assigned to before global declaration", node);
break;
case VariableKind.Parameter:
ReportSyntaxError($"name '{n}' is parameter and global", node);
break;
case VariableKind.Nonlocal:
ReportSyntaxError($"name '{n}' is nonlocal and global", node);
break;
}
}
// Check for the name being referenced previously
if (_currentScope.IsReferenced(n) && !assignedGlobal)
{
ReportSyntaxError($"name '{n}' is used prior to global declaration", node);
}
// Create the variable in the global context or mark it as global
PythonVariable variable = _globalScope.EnsureGlobalVariable(n);
if (conflict == null)
{
// no previously defined variables, add it to the current scope
_currentScope.AddGlobalVariable(variable);
}
}
return(true);
}
