protected void ResolveFunDeclStmt(AstFunDeclStmt stmt)
{
var scope = Scope();
if (scope != null) // TODO: Better global handling
{
if (scope.ContainsKey(stmt.m_identifier.m_identifier))
{
m_error = true;
Lox.Error(stmt.m_startLine, "Redefinition of identifier \"" + stmt.m_identifier.m_identifier + "\"");
return;
}
scope[stmt.m_identifier.m_identifier] = true;
}
scope = PushScope();
foreach (string param in stmt.m_params)
{
scope[param] = true;
}
ResolveStmts(stmt.m_body);
PopScope();
}
protected Function ExecuteFunDeclStmt(AstFunDeclStmt stmt)
{
if (HadErrorOrReturn())
{
return(null);
}
Function fn = new Function(stmt, m_environment);
bool success = m_environment.Define(stmt.m_identifier.m_identifier, fn);
if (!success)
{
// @copypaste
// TODO: Print the line that the first definition was on? To do that we would have to store
// line numbers in the environment. Also, it wouldn't really make sense for repl mode so we would
// have to have a way to check if we are in repl mode.
m_runtimeError = true;
Lox.Error(stmt.m_startLine, "Redifinition of identifier.m_identifier " + stmt.m_identifier.m_identifier);
return(null);
}
return(fn);
}
public Function(AstFunDeclStmt funDecl, Environment closure)
{
m_funDecl = funDecl;
m_closure = closure;
}
