/* Tuplr Serialisation
 * Copyright (C) 2008-2009 David Robillard <dave@drobilla.net>
 *
 * Tuplr is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * Tuplr is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General
 * Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Tuplr.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "tuplr.hpp"

ostream&
operator<<(ostream& out, const AST* ast)
{
	const ALiteral<float>* flit = dynamic_cast<const ALiteral<float>*>(ast);
	if (flit)
		return out << showpoint << flit->val;
	
	const ALiteral<int32_t>* ilit = dynamic_cast<const ALiteral<int32_t>*>(ast);
	if (ilit)
		return out << ilit->val;
	
	const ALiteral<bool>* blit = dynamic_cast<const ALiteral<bool>*>(ast);
	if (blit)
		return out << (blit->val ? "#t" : "#f");

	const ASymbol* sym = dynamic_cast<const ASymbol*>(ast);
	if (sym)
		return out << sym->cppstr;
	
	const AType* type = dynamic_cast<const AType*>(ast);
	if (type) {
		switch (type->kind) {
		case AType::VAR:  return out << "?" << type->id;
		case AType::PRIM: return out << type->at(0);
		case AType::EXPR: break; // will catch Tuple case below
		}
	 }
	
	const ATuple* tup = dynamic_cast<const ATuple*>(ast);
	if (tup) {
		out << "(";
		for (size_t i = 0; i != tup->size(); ++i)
			out << tup->at(i) << ((i != tup->size() - 1) ? " " : "");
		return out << ")";
	}
	
	return out << "?";
}