Swiftdiff options
| author | Remko Tronçon <git@el-tramo.be> | 2011-03-01 20:57:03 (GMT) |
|---|---|---|
| committer | Remko Tronçon <git@el-tramo.be> | 2011-03-01 21:25:56 (GMT) |
| commit | 182dc1c6cbed6ac2bbe297f856650367e0f12ba7 (patch) | |
| tree | f9f683e6688683eed559f37d2dfa2ed0966a89c1 /Sluift/Lua | |
| parent | 48389cafdbf211d70fa56f453c6d3b652482a139 (diff) | |
| download | swift-contrib-182dc1c6cbed6ac2bbe297f856650367e0f12ba7.zip swift-contrib-182dc1c6cbed6ac2bbe297f856650367e0f12ba7.tar.bz2 | |
Introduce Lua::Value helper.
Diffstat (limited to 'Sluift/Lua')
| -rw-r--r-- | Sluift/Lua/Value.cpp | 66 | ||||
| -rw-r--r-- | Sluift/Lua/Value.h | 34 |
2 files changed, 100 insertions, 0 deletions
diff --git a/Sluift/Lua/Value.cpp b/Sluift/Lua/Value.cpp new file mode 100644 index 0000000..b612bd9 --- /dev/null +++ b/Sluift/Lua/Value.cpp @@ -0,0 +1,66 @@ +/*
+ * 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 <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>& list) const {
+ lua_newtable(state);
+ int i = 0;
+ foreach(const Value& value, list) {
+ boost::apply_visitor(PushVisitor(state), value);
+ lua_rawseti(state, -2, i + 1);
+ }
+ }
+
+ void operator()(const std::map<std::string, boost::shared_ptr<Value> >& table) const {
+ lua_createtable(state, 0, 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);
+}
+
+}}
diff --git a/Sluift/Lua/Value.h b/Sluift/Lua/Value.h new file mode 100644 index 0000000..9b6da34 --- /dev/null +++ b/Sluift/Lua/Value.h @@ -0,0 +1,34 @@ +/*
+ * Copyright (c) 2011 Remko Tronçon
+ * Licensed under the GNU General Public License v3.
+ * See Documentation/Licenses/GPLv3.txt for more information.
+ */
+
+#pragma once
+
+#include <map>
+#include <string>
+#include <vector>
+#include <boost/variant.hpp>
+#include <boost/shared_ptr.hpp>
+
+struct lua_State;
+
+namespace Swift {
+ namespace Lua {
+ struct Nil {};
+
+ typedef boost::make_recursive_variant<
+ Nil,
+ bool,
+ int,
+ std::string,
+ std::vector< boost::recursive_variant_ >,
+ std::map<std::string, boost::shared_ptr<boost::recursive_variant_> >
+ >::type Value;
+
+ typedef std::map<std::string, boost::shared_ptr<Value> > Table;
+
+ void pushValue(lua_State* state, const Value& value);
+ }
+}
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