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#include "stdafx.h"
void table2json(lua_State *L, int idx, JSONNode &node)
{
lua_pushnil(L);
while (lua_next(L, idx) != 0)
{
JSONNode &nnode = (lua_type(L, -2) == LUA_TNUMBER ? (node)[(size_t)lua_tonumber(L, -2) - 1] : (node)[lua_tostring(L, -2)]);
switch (lua_type(L, -1))
{
case LUA_TSTRING:
nnode = lua_tostring(L, -1);
break;
case LUA_TBOOLEAN:
nnode = lua_toboolean(L, -1) != 0;
break;
case LUA_TNUMBER:
nnode = lua_tonumber(L, -1);
break;
case LUA_TNIL:
nnode.nullify();
break;
case LUA_TTABLE:
nnode = JSONNode(nnode.name(), NULL);
table2json(L, -1, nnode);
}
lua_pop(L, 1);
}
}
int json_pushvalue(lua_State *L, JSONNode &node)
{
switch (node.type())
{
case JSON_NULL:
lua_pushnil(L);
break;
case JSON_STRING:
lua_pushstring(L, node.as_string().c_str());
break;
case JSON_NUMBER:
lua_pushnumber(L, node.as_int());
break;
case JSON_BOOL:
lua_pushboolean(L, node.as_bool());
break;
case JSON_ARRAY:
case JSON_NODE:
MT *udata = (MT*)lua_newuserdata(L, sizeof(MT));
udata->node = &node;
udata->bDelete = false;
luaL_setmetatable(L, MT_JSON);
}
return 1;
}
int json_setvalue(lua_State *L, JSONNode &node)
{
switch (lua_type(L, 3))
{
case LUA_TSTRING:
node = lua_tostring(L, 3);
break;
case LUA_TBOOLEAN:
node = lua_toboolean(L, 3) != 0;
break;
case LUA_TNUMBER:
node = lua_tonumber(L, 3);
break;
case LUA_TNIL:
node.nullify();
break;
//case LUA_TTABLE:
//node = JSONNode(node.name(), JSONNode());
//table2json(L, 3, node);
}
return 0;
}
static int json__call(lua_State *L)
{
if (lua_istable(L, 1))
{
/* MT *udata = (MT*)lua_newuserdata(L, sizeof(MT));
udata->node = json_new(JSON_NODE);
table2json(L, 1, *udata->node);
udata->bDelete = true;
luaL_setmetatable(L, MT_JSON);
return 1;
*/
}
return 0;
}
static int json__index(lua_State *L)
{
JSONNode *node = ((MT*)luaL_checkudata(L, 1, MT_JSON))->node;
switch (lua_type(L, 2))
{
case LUA_TNUMBER:
return json_pushvalue(L, (*node)[(size_t)lua_tonumber(L, 2) - 1]);
case LUA_TSTRING:
return json_pushvalue(L, (*node)[lua_tostring(L, 2)]);
}
return 0;
}
static int json__newindex(lua_State *L)
{
JSONNode *node = ((MT*)luaL_checkudata(L, 1, MT_JSON))->node;
switch (lua_type(L, 2))
{
case LUA_TNUMBER:
json_setvalue(L, (*node)[(size_t)lua_tonumber(L, 2) - 1]);
break;
case LUA_TSTRING:
json_setvalue(L, (*node)[lua_tostring(L, 2)]);
break;
}
return 0;
}
static int json__len(lua_State *L)
{
JSONNode *node = ((MT*)luaL_checkudata(L, 1, MT_JSON))->node;
lua_pushnumber(L, (*node).size());
return 1;
}
static int json__tostring(lua_State *L)
{
JSONNode *node = ((MT*)luaL_checkudata(L, 1, MT_JSON))->node;
lua_pushstring(L, (*node).write().c_str());
return 1;
}
static int json__gc(lua_State *L)
{
MT *mt = (MT*)luaL_checkudata(L, 1, MT_JSON);
if (mt->bDelete)
{
json_delete(mt->node);
mt->node = nullptr;
}
return 0;
}
static const struct luaL_Reg jsonApi[] =
{
{ "__call", json__call },
{ "__index", json__index },
{ "__newindex", json__newindex },
{ "__len", json__len },
{ "__tostring", json__tostring },
{ "__gc", json__gc },
{ NULL, NULL }
};
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