diff options
| author | pixel <pixel> | 2003-11-06 11:56:07 +0000 |
|---|---|---|
| committer | pixel <pixel> | 2003-11-06 11:56:07 +0000 |
| commit | bb6ade743cea6ba6f4f8746a12d52fd1886f4db9 (patch) | |
| tree | 5933870bd6be14674dab87bd8386631f16322f81 /lib/lua/includes/lparser.h | |
| parent | f70ad229bc765f3e6fd218f1e54bd0828fc9e1b4 (diff) | |
Adding LUA
Diffstat (limited to 'lib/lua/includes/lparser.h')
| -rw-r--r-- | lib/lua/includes/lparser.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/lib/lua/includes/lparser.h b/lib/lua/includes/lparser.h new file mode 100644 index 0000000..ab578fb --- /dev/null +++ b/lib/lua/includes/lparser.h @@ -0,0 +1,71 @@ +/*
+** $Id: lparser.h,v 1.1 2003-11-06 11:56:07 pixel 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' */
+ 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 = result register */
+} expkind;
+
+typedef struct expdesc {
+ expkind k;
+ int info, aux;
+ int t; /* patch list of `exit when true' */
+ int f; /* patch list of `exit when false' */
+} expdesc;
+
+
+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' */
+ int nlocvars; /* number of elements in `locvars' */
+ int nactvar; /* number of active local variables */
+ expdesc upvalues[MAXUPVALUES]; /* upvalues */
+ int actvar[MAXVARS]; /* declared-variable stack */
+} FuncState;
+
+
+Proto *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff);
+
+
+#endif
|