public Symbol <AST> Resolve(string name, bool search_global, int line = -1)
{
if (EnclosingScope == null && !search_global)
{
return(null);
}
if (symbols.ContainsKey(name))
{
return(symbols[name]);
}
Symbol <AST> rt = null;
// if not here, check any enclosing scope
if (EnclosingScope != null)
{
rt = EnclosingScope.Resolve(name, search_global);
}
if (rt == null && line > 0)
{
ConsoleColor restore = Console.ForegroundColor;
Console.ForegroundColor = System.ConsoleColor.Red;
Console.Error.WriteLine("line {0}: {1} is undefined", line, name);
Console.ForegroundColor = restore;
}
return(rt); // not found
}
public Boolean AllowedForwardReferences(Ast ast)
{
if (Symbols.ContainsKey(ast.Token.TokenValue))
{
return(AllowAllForwardReferences);
}
if (EnclosingScope == null)
{
return(false);
}
return(EnclosingScope.AllowedForwardReferences(ast));
}
public Symbol Resolve(String name)
{
Symbol o;
if (Symbols.TryGetValue(name, out o))
{
return(o);
}
if (EnclosingScope == null)
{
return(null);
}
return(EnclosingScope.Resolve(name));
}
public IdentifierDesc FindIdentifier(string name)
{
var identifier = FindIdentifierInCurrentScope(name);
if (identifier != null)
{
return(identifier);
}
if (EnclosingScope != null)
{
identifier = EnclosingScope.FindIdentifier(name);
}
return(identifier);
}
public Symbol Resolve(string name)
{
Symbol s;
if (this.Members.TryGetValue(name, out s))
{
return(s);
}
else if (EnclosingScope != null)
{
return(EnclosingScope.Resolve(name));
}
else
{
return(null);
}
}
/// <summary> ClassSymbol and MethodSymbol overload this.</summary>
/// <param name="name">the symbol to resolve</param>
/// <param name="search_global">search the global namespace?</param>
/// <returns>Symbol</returns>
public virtual Symbol <AST> ResolveSymbol(string name, bool search_global)
{
if (EnclosingScope == null && !search_global)
{
return(null);
}
if (Members.ContainsKey(name))
{
return(Members[name]);
}
// if not here, check any parent scope
if (EnclosingScope != null)
{
return(EnclosingScope.Resolve(name, search_global));
}
return(null); // not found
}
