advtrains.git - Advtrains mod for minetest.

path: root/assets/interlocking.html.LyXconv/interlocking.dvi

	Commit message (Collapse)	Author	Age
*	Update interlocking manual	orwell96	2019-01-15
\|
*	Update manual again	orwell96	2018-10-15

>68 69 70 71 72 73 74 75 76 77 78 79 80 81 82

/*
** $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' */