THRIFT-1681: Add Lua Support Patch: Dave Watson
Github Pull Request: This closes #92
diff --git a/lib/lua/src/luabitwise.c b/lib/lua/src/luabitwise.c
new file mode 100644
index 0000000..2e07e17
--- /dev/null
+++ b/lib/lua/src/luabitwise.c
@@ -0,0 +1,83 @@
+//
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+//
+
+#include <lua.h>
+#include <lauxlib.h>
+
+static int l_not(lua_State *L) {
+ int a = luaL_checkinteger(L, 1);
+ a = ~a;
+ lua_pushnumber(L, a);
+ return 1;
+}
+
+static int l_xor(lua_State *L) {
+ int a = luaL_checkinteger(L, 1);
+ int b = luaL_checkinteger(L, 2);
+ a ^= b;
+ lua_pushnumber(L, a);
+ return 1;
+}
+
+static int l_and(lua_State *L) {
+ int a = luaL_checkinteger(L, 1);
+ int b = luaL_checkinteger(L, 2);
+ a &= b;
+ lua_pushnumber(L, a);
+ return 1;
+}
+
+static int l_or(lua_State *L) {
+ int a = luaL_checkinteger(L, 1);
+ int b = luaL_checkinteger(L, 2);
+ a |= b;
+ lua_pushnumber(L, a);
+ return 1;
+}
+
+static int l_shiftr(lua_State *L) {
+ int a = luaL_checkinteger(L, 1);
+ int b = luaL_checkinteger(L, 2);
+ a = a >> b;
+ lua_pushnumber(L, a);
+ return 1;
+}
+
+static int l_shiftl(lua_State *L) {
+ int a = luaL_checkinteger(L, 1);
+ int b = luaL_checkinteger(L, 2);
+ a = a << b;
+ lua_pushnumber(L, a);
+ return 1;
+}
+
+static const struct luaL_Reg funcs[] = {
+ {"band", l_and},
+ {"bor", l_or},
+ {"bxor", l_xor},
+ {"bnot", l_not},
+ {"shiftl", l_shiftl},
+ {"shiftr", l_shiftr},
+ {NULL, NULL}
+};
+
+int luaopen_libluabitwise(lua_State *L) {
+ luaL_register(L, "libluabitwise", funcs);
+ return 1;
+}