// GlobalStatement public override bool Walk(GlobalStatement node) { foreach (NameExpression nameNode in node.Names) { string n = nameNode.Name; if (n == null) { continue; } 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 '{0}' is assigned to before global declaration".FormatUI(n), node ); break; case VariableKind.Parameter: ReportSyntaxError( "Name '{0}' is a function parameter and declared global".FormatUI(n), node); break; } } // Check for the name being referenced previously. If it has been, issue warning. if (_currentScope.IsReferenced(n) && !assignedGlobal) { ReportSyntaxWarning( "name '{0}' is used prior to global declaration".FormatUI(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.AddVariable(variable); } nameNode.AddVariableReference(GlobalScope, BindReferences, Reference(n)); } 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: case VariableKind.Local: assignedGlobal = true; ReportSyntaxWarning( String.Format( System.Globalization.CultureInfo.InvariantCulture, "name '{0}' is assigned to before global declaration", n ), node ); break; case VariableKind.Parameter: ReportSyntaxError( String.Format( System.Globalization.CultureInfo.InvariantCulture, "Name '{0}' is a function parameter and declared global", n), 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.AddVariable(variable); } } return(true); }