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Versions: 11
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Stored size: 1.92 KB
Contents
#ifndef DOXY_GENERATOR_LIB_DOXY_GENERATOR_INCLUDE_LUA_DOXY_HELPER_H_
#define DOXY_GENERATOR_LIB_DOXY_GENERATOR_INCLUDE_LUA_DOXY_HELPER_H_
#include <stdlib.h> // malloc
#include "lua.h"
#include "lauxlib.h"
/** ======================================== lua_pushclass */
/** Push a custom type on the stack.
* Since the value is passed as a pointer, we assume it has been created
* using 'new' and Lua can safely call delete when it needs to garbage-
* -collect it.
*/
template<class T>
void lua_pushclass(lua_State *L, T *ptr, const char *type_name) {
T **userdata = (T**)lua_newuserdata(L, sizeof(T*));
*userdata = ptr;
// the userdata is now on top of the stack
// set metatable (contains methods)
luaL_getmetatable(L, type_name);
lua_setmetatable(L, -2);
}
/** Push a custom type on the stack.
* Since the value is passed by value, we have to allocate a copy
* using 'new' so that Lua can keep it.
*/
template<class T>
void lua_pushclass(lua_State *L, T &val, const char *type_name) {
T *val_ptr = new T(val);
lua_pushclass<T>(L, val_ptr, type_name);
}
/** ======================================== DubArgPointer */
template<class T>
class DubArgPointer {
public:
DubArgPointer() : data(NULL) {}
~DubArgPointer() {
if (data) free(data);
}
// TODO: we should have a hint on required sizes !
T *operator()(lua_State *L, int index) {
if (!lua_istable(L, index)) throw 1;
size_t size = lua_objlen(L, index);
if (size == 0) return NULL;
data = (T*)malloc(size * sizeof(T));
if (!data) throw 1;
for(size_t i=0; i < size; ++i) {
data[i] = get_value_at(L, index, i+1);
}
}
private:
T get_value_at(lua_State *L, int table_index, int index) {
lua_pushinteger(L, index + 1);
lua_gettable(L, index);
T value = luaL_checknumber(L, -1);
lua_pop(L, 1);
return value;
}
T *data;
};
#endif // DOXY_GENERATOR_LIB_DOXY_GENERATOR_INCLUDE_LUA_DOXY_HELPER_H_
Version data entries
11 entries across 11 versions & 1 rubygems