public override bool Define(VariableSymbol sym)
{
if (ResolveLocalVariable(sym.Name) != null)
{
return false;
}
return base.Define(sym);
}
public new virtual bool Define(VariableSymbol sym)
{
return base.Define(sym);
}
internal static VariableSymbol CreateAndDefineVariable(string name, IType type, IVariableScope scope)
{
var sym = new VariableSymbol(name, type, scope);
scope.Define(sym);
return sym;
}
// Detects possible duplicate declaration of a variable identifier.
public override void Visit(VariableDeclaration node)
{
Debug.Assert(CurrentScope is IVariableScope);
node.Type = CheckDeclaredType(node);
var variableSymbol = new VariableSymbol(node.Name, node.Type, CurrentScope);
if ((CurrentScope as IVariableScope).Define(variableSymbol))
{
variableSymbol.Declaration = node;
node.Scope = CurrentScope;
}
else
{
ReportSymbolDefinitionError(node);
}
}
