mirror of
https://github.com/holub/mame
synced 2025-06-25 13:54:37 +03:00
b5475eb38b
Compile Lua as C++. When Lua is compiled as C, it uses setjmp/longjmp for error handling, resulting in failure to unwind intermediate stack frames. Trying to ensure no objects with non-trivial destructors are in scope when raising a Lua error is error-prone. In particular, converting an exception to a Lua error becomes convoluted, and raising a Lua error from a constructor is effectively impossible. Updated Lua to 5.4.4 - this includes a brand-new garbage collector implementation with better performance. The main thing removed is the deprecated bitlib. Updated sol2 to version 3.3.0 - this adds support for Lua 5.4 and fixes a number of issues, including not correctly handling errors when Lua is built as C++. Updated LuaFileSystem to version 1.8.0 - this adds support for symbolic links on Windows, as well as Lua 5.4 compatibility. Updated LuaSQLite3 to version 0.9.5 - this fixes issues in multi-threaded environments, as well as Lua 5.4 compatibility. Fixed double-free after attempting to construct a debugger expression from Lua with an invalid string, and exposed expression error to Lua in a better way. Added warning level print function to Lua. Fixed saving cheats with shift operators in expressions, although this code isn't actually used as there's no cheat editor.
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/*
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** $Id: lfunc.h $
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** Auxiliary functions to manipulate prototypes and closures
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** See Copyright Notice in lua.h
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*/
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#ifndef lfunc_h
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#define lfunc_h
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#include "lobject.h"
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#define sizeCclosure(n) (cast_int(offsetof(CClosure, upvalue)) + \
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cast_int(sizeof(TValue)) * (n))
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#define sizeLclosure(n) (cast_int(offsetof(LClosure, upvals)) + \
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cast_int(sizeof(TValue *)) * (n))
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/* test whether thread is in 'twups' list */
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#define isintwups(L) (L->twups != L)
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/*
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** maximum number of upvalues in a closure (both C and Lua). (Value
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** must fit in a VM register.)
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*/
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#define MAXUPVAL 255
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#define upisopen(up) ((up)->v != &(up)->u.value)
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#define uplevel(up) check_exp(upisopen(up), cast(StkId, (up)->v))
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/*
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** maximum number of misses before giving up the cache of closures
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** in prototypes
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*/
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#define MAXMISS 10
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/* special status to close upvalues preserving the top of the stack */
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#define CLOSEKTOP (-1)
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LUAI_FUNC Proto *luaF_newproto (lua_State *L);
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LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nupvals);
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LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nupvals);
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LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl);
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LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level);
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LUAI_FUNC void luaF_newtbcupval (lua_State *L, StkId level);
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LUAI_FUNC void luaF_closeupval (lua_State *L, StkId level);
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LUAI_FUNC void luaF_close (lua_State *L, StkId level, int status, int yy);
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LUAI_FUNC void luaF_unlinkupval (UpVal *uv);
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LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f);
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LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number,
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int pc);
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#endif
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