/*** $Id: lparser.h,v 1.56 2005/10/03 14:02:40 roberto Exp $** Lua Parser** See Copyright Notice in lua.h*/#ifndef lparser_h#define lparser_h#include "llimits.h"#include "lobject.h"#include "ltable.h"#include "lzio.h"/*** Expression descriptor*/typedef enum {  VVOID,	/* no value */  VNIL,  VTRUE,  VFALSE,  VK,		/* info = index of constant in `k' */  VKNUM,	/* nval = numerical value */  VLOCAL,	/* info = local register */  VUPVAL,       /* info = index of upvalue in `upvalues' */  VGLOBAL,	/* info = index of table; aux = index of global name in `k' */  VINDEXED,	/* info = table register; aux = index register (or `k') */  VJMP,		/* info = instruction pc */  VRELOCABLE,	/* info = instruction pc */  VNONRELOC,	/* info = result register */  VCALL,	/* info = instruction pc */  VVARARG	/* info = instruction pc */} expkind;typedef struct expdesc {  expkind k;  union {    struct { int info, aux; } s;    lua_Number nval;  } u;  int t;  /* patch list of `exit when true' */  int f;  /* patch list of `exit when false' */} expdesc;typedef struct upvaldesc {  lu_byte k;  lu_byte info;} upvaldesc;struct BlockCnt;  /* defined in lparser.c *//* state needed to generate code for a given function */typedef struct FuncState {  Proto *f;  /* current function header */  Table *h;  /* table to find (and reuse) elements in `k' */  struct FuncState *prev;  /* enclosing function */  struct LexState *ls;  /* lexical state */  struct lua_State *L;  /* copy of the Lua state */  struct BlockCnt *bl;  /* chain of current blocks */  int pc;  /* next position to code (equivalent to `ncode') */  int lasttarget;   /* `pc' of last `jump target' */  int jpc;  /* list of pending jumps to `pc' */  int freereg;  /* first free register */  int nk;  /* number of elements in `k' */  int np;  /* number of elements in `p' */  short nlocvars;  /* number of elements in `locvars' */  lu_byte nactvar;  /* number of active local variables */  upvaldesc upvalues[LUAI_MAXUPVALUES];  /* upvalues */  unsigned short actvar[LUAI_MAXVARS];  /* declared-variable stack */} FuncState;LUAI_FUNC Proto *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff,                                            const char *name);#endif