public virtual CommandDeclareVariable DefineLocalVariable(ILanguageType symbolType)
{
var localVar = SymbolLocalVariable.Create(symbolType, ChildCommandBlockScope);
var command = new CommandDeclareVariable(ChildCommandBlockScope, localVar);
CommandsList.Add(command);
return(command);
}
public bool LookupLocalVariable(string symbolName, out SymbolLocalVariable localVar)
{
LanguageSymbol symbol;
if (ChildCommandBlockScope.LookupSymbol(symbolName, RootAst.LocalVariableRoleName, out symbol))
{
localVar = (SymbolLocalVariable)symbol;
return(true);
}
localVar = null;
return(false);
}
/// <summary>
/// Removes the definition of a local variable from this command block
/// </summary>
/// <param name="localVar"></param>
/// <returns></returns>
public bool UndefineLocalVariable(SymbolLocalVariable localVar)
{
var declareCommand =
DeclareVariableCommands.FirstOrDefault(
command => command.DataStore.ObjectName == localVar.ObjectName
);
if (ReferenceEquals(declareCommand, null) == false)
{
RemoveCommand(declareCommand);
}
return(ChildScope.RemoveLocalVariable(localVar));
}
internal static AstLocalVariable ToAstLocalVariable(this SymbolLocalVariable variable)
{
return(new AstLocalVariable(variable));
}
/// <summary>
/// Remove a local variable from this scope
/// </summary>
/// <param name="symbol"></param>
/// <returns></returns>
internal bool RemoveLocalVariable(SymbolLocalVariable symbol)
{
return(_symbols.Remove(symbol.ObjectName));
}
internal AstLocalVariable(SymbolLocalVariable parameter)
{
AssociatedVariable = parameter;
}
