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/*
* Copyright (c) 2011 Remko Tronçon
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include "Value.h"
extern "C" {
#include <lualib.h>
}
#include <boost/variant/apply_visitor.hpp>
#include <boost/numeric/conversion/cast.hpp>
#include <Swiften/Base/foreach.h>
using namespace Swift;
using namespace Swift::Lua;
namespace {
struct PushVisitor : public boost::static_visitor<> {
PushVisitor(lua_State* state) : state(state) {
}
void operator()(const Nil&) const {
lua_pushnil(state);
}
void operator()(const bool& b) const {
lua_pushboolean(state, b);
}
void operator()(const int& i) const {
lua_pushnumber(state, i);
}
void operator()(const std::string& s) const {
lua_pushstring(state, s.c_str());
}
void operator()(const std::vector<Value>& values) const {
lua_createtable(state, boost::numeric_cast<int>(values.size()), 0);
for(size_t i = 0; i < values.size(); ++i) {
boost::apply_visitor(PushVisitor(state), values[i]);
lua_rawseti(state, -2, boost::numeric_cast<int>(i + 1));
}
}
void operator()(const std::map<std::string, boost::shared_ptr<Value> >& table) const {
lua_createtable(state, 0, boost::numeric_cast<int>(table.size()));
for(std::map<std::string, boost::shared_ptr<Value> >::const_iterator i = table.begin(); i != table.end(); ++i) {
boost::apply_visitor(PushVisitor(state), *i->second);
lua_setfield(state, -2, i->first.c_str());
}
}
lua_State* state;
};
}
namespace Swift { namespace Lua {
void pushValue(lua_State* state, const Value& value) {
boost::apply_visitor(PushVisitor(state), value);
}
}}
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Swift