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add lua 5.1 and 5.2 support #3

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add lua 5.1 and 5.2 support #3

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31 changes: 20 additions & 11 deletions serialize.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,26 @@
#include <assert.h>
#include <string.h>


#if LUA_VERSION_NUM < 502

#define lua_rawlen(L, I) lua_objlen(L, I)
#define luaL_newlib(L, R) {lua_newtable(L); luaL_register(L, NULL, R);}

#endif

#if LUA_VERSION_NUM < 503

static int
lua_isinteger(lua_State *L, int index) {
int32_t x = (int32_t)lua_tointeger(L,index);
lua_Number n = lua_tonumber(L,index);
return ((lua_Number)x==n);
}

#endif


#define TYPE_NIL 0
#define TYPE_BOOLEAN 1
// hibits 0 false 1 true
Expand Down Expand Up @@ -348,17 +368,6 @@ wb_table(lua_State *L, struct write_block *wb, int index, int depth) {
wb_table_hash(L, wb, index, depth, array_size);
}

#if LUA_VERSION_NUM < 503

static int
lua_isinteger(lua_State *L, int index) {
int32_t x = (int32_t)lua_tointeger(L,index);
lua_Number n = lua_tonumber(L,index);
return ((lua_Number)x==n);
}

#endif

static void
pack_one(lua_State *L, struct write_block *b, int index, int depth) {
if (depth > MAX_DEPTH) {
Expand Down