public object Visit(Stmt.Function stmt)
{
Declare(stmt.name);
Define(stmt.name);
ResolveFunction(stmt, FunctionType.Function);
return(null);
}
public object Visit(Stmt.Function _function)
{
LoxFunction function = new LoxFunction(_function, m_Enviroment);
m_Enviroment.Define(_function.name.lexeme, function);
return(null);
}
private void ResolveFunction(Stmt.Function stmt, FunctionType functionType)
{
FunctionType enclosingFunction = m_CurrentFunction;
m_CurrentFunction = functionType;
BeginScope();
{
foreach (Token paramter in stmt.parameters)
{
Declare(paramter);
Define(paramter);
}
Resolve(stmt.body);
}
EndScope();
m_CurrentFunction = enclosingFunction;
}
public LoxFunction(Stmt.Function declaration, Environment closure)
{
m_Declaration = declaration;
m_Closure = closure;
}