73 lines
2.9 KiB
C++
73 lines
2.9 KiB
C++
/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/******************************************************************************/
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/******************************************************************************/
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/* WARNING!!!! do NOT add this header in any include file or any code file */
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/* not being a modapi file!!!!!!!! */
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/******************************************************************************/
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/******************************************************************************/
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#ifndef C_INTERNAL_H_
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#define C_INTERNAL_H_
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extern "C" {
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#include <lua.h>
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#include <lauxlib.h>
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}
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#include "common/c_types.h"
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// What script_run_callbacks does with the return values of callbacks.
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// Regardless of the mode, if only one callback is defined,
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// its return value is the total return value.
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// Modes only affect the case where 0 or >= 2 callbacks are defined.
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enum RunCallbacksMode
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{
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// Returns the return value of the first callback
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// Returns nil if list of callbacks is empty
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RUN_CALLBACKS_MODE_FIRST,
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// Returns the return value of the last callback
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// Returns nil if list of callbacks is empty
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RUN_CALLBACKS_MODE_LAST,
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// If any callback returns a false value, the first such is returned
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// Otherwise, the first callback's return value (trueish) is returned
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// Returns true if list of callbacks is empty
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RUN_CALLBACKS_MODE_AND,
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// Like above, but stops calling callbacks (short circuit)
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// after seeing the first false value
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RUN_CALLBACKS_MODE_AND_SC,
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// If any callback returns a true value, the first such is returned
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// Otherwise, the first callback's return value (falseish) is returned
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// Returns false if list of callbacks is empty
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RUN_CALLBACKS_MODE_OR,
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// Like above, but stops calling callbacks (short circuit)
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// after seeing the first true value
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RUN_CALLBACKS_MODE_OR_SC,
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// Note: "a true value" and "a false value" refer to values that
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// are converted by lua_toboolean to true or false, respectively.
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};
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std::string script_get_backtrace (lua_State *L);
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void script_error (lua_State *L, const char *fmt, ...);
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void script_run_callbacks (lua_State *L, int nargs,
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RunCallbacksMode mode);
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#endif /* C_INTERNAL_H_ */
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