misc/liblua/lparser.h
author dag10
Mon, 21 Jan 2013 21:52:49 -0500
changeset 8424 225ede46e3dc
parent 2812 0a24853de796
child 10017 de822cd3df3a
permissions -rw-r--r--
On pagenetgame, when window is too small the map/game options becomes a tabbed interface to allow for a few lines of chat to always be visible. Restored HWForm's min height to 580. Fixed the 2px alignment issue with the map list and map previews' top edges that unC0Rr was whining about. <3

/*
** $Id: lparser.h,v 1.57.1.1 2007/12/27 13:02:25 roberto Exp $
** Lua Parser
** See Copyright Notice in lua.h
*/

#ifndef lparser_h
#define lparser_h

#include "llimits.h"
#include "lobject.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