Add lua as an internal library in libs/lua

1 files changed, 381 insertions, 0 deletions

diff --git a/libs/lua/src/lobject.h b/libs/lua/src/lobject.h
new file mode 100644
index 0000000..f1e447e
--- /dev/null
+++ b/libs/lua/src/lobject.h
@@ -0,0 +1,381 @@
+/*
+** $Id: lobject.h,v 2.20.1.2 2008/08/06 13:29:48 roberto Exp $
+** Type definitions for Lua objects
+** See Copyright Notice in lua.h
+*/
+
+
+#ifndef lobject_h
+#define lobject_h
+
+
+#include <stdarg.h>
+
+
+#include "llimits.h"
+#include "lua.h"
+
+
+/* tags for values visible from Lua */
+#define LAST_TAG        LUA_TTHREAD
+
+#define NUM_TAGS        (LAST_TAG+1)
+
+
+/*
+** Extra tags for non-values
+*/
+#define LUA_TPROTO      (LAST_TAG+1)
+#define LUA_TUPVAL      (LAST_TAG+2)
+#define LUA_TDEADKEY    (LAST_TAG+3)
+
+
+/*
+** Union of all collectable objects
+*/
+typedef union GCObject GCObject;
+
+
+/*
+** Common Header for all collectable objects (in macro form, to be
+** included in other objects)
+*/
+#define CommonHeader    GCObject *next; lu_byte tt; lu_byte marked
+
+
+/*
+** Common header in struct form
+*/
+typedef struct GCheader {
+  CommonHeader;
+} GCheader;
+
+
+
+
+/*
+** Union of all Lua values
+*/
+typedef union {
+  GCObject *gc;
+  void *p;
+  lua_Number n;
+  int b;
+} Value;
+
+
+/*
+** Tagged Values
+*/
+
+#define TValuefields    Value value; int tt
+
+typedef struct lua_TValue {
+  TValuefields;
+} TValue;
+
+
+/* Macros to test type */
+#define ttisnil(o)      (ttype(o) == LUA_TNIL)
+#define ttisnumber(o)   (ttype(o) == LUA_TNUMBER)
+#define ttisstring(o)   (ttype(o) == LUA_TSTRING)
+#define ttistable(o)    (ttype(o) == LUA_TTABLE)
+#define ttisfunction(o) (ttype(o) == LUA_TFUNCTION)
+#define ttisboolean(o)  (ttype(o) == LUA_TBOOLEAN)
+#define ttisuserdata(o) (ttype(o) == LUA_TUSERDATA)
+#define ttisthread(o)   (ttype(o) == LUA_TTHREAD)
+#define ttislightuserdata(o)    (ttype(o) == LUA_TLIGHTUSERDATA)
+
+/* Macros to access values */
+#define ttype(o)        ((o)->tt)
+#define gcvalue(o)      check_exp(iscollectable(o), (o)->value.gc)
+#define pvalue(o)       check_exp(ttislightuserdata(o), (o)->value.p)
+#define nvalue(o)       check_exp(ttisnumber(o), (o)->value.n)
+#define rawtsvalue(o)   check_exp(ttisstring(o), &(o)->value.gc->ts)
+#define tsvalue(o)      (&rawtsvalue(o)->tsv)
+#define rawuvalue(o)    check_exp(ttisuserdata(o), &(o)->value.gc->u)
+#define uvalue(o)       (&rawuvalue(o)->uv)
+#define clvalue(o)      check_exp(ttisfunction(o), &(o)->value.gc->cl)
+#define hvalue(o)       check_exp(ttistable(o), &(o)->value.gc->h)
+#define bvalue(o)       check_exp(ttisboolean(o), (o)->value.b)
+#define thvalue(o)      check_exp(ttisthread(o), &(o)->value.gc->th)
+
+#define l_isfalse(o)    (ttisnil(o) || (ttisboolean(o) && bvalue(o) == 0))
+
+/*
+** for internal debug only
+*/
+#define checkconsistency(obj) \
+  lua_assert(!iscollectable(obj) || (ttype(obj) == (obj)->value.gc->gch.tt))
+
+#define checkliveness(g,obj) \
+  lua_assert(!iscollectable(obj) || \
+  ((ttype(obj) == (obj)->value.gc->gch.tt) && !isdead(g, (obj)->value.gc)))
+
+
+/* Macros to set values */
+#define setnilvalue(obj) ((obj)->tt=LUA_TNIL)
+
+#define setnvalue(obj,x) \
+  { TValue *i_o=(obj); i_o->value.n=(x); i_o->tt=LUA_TNUMBER; }
+
+#define setpvalue(obj,x) \
+  { TValue *i_o=(obj); i_o->value.p=(x); i_o->tt=LUA_TLIGHTUSERDATA; }
+
+#define setbvalue(obj,x) \
+  { TValue *i_o=(obj); i_o->value.b=(x); i_o->tt=LUA_TBOOLEAN; }
+
+#define setsvalue(L,obj,x) \
+  { TValue *i_o=(obj); \
+    i_o->value.gc=cast(GCObject *, (x)); i_o->tt=LUA_TSTRING; \
+    checkliveness(G(L),i_o); }
+
+#define setuvalue(L,obj,x) \
+  { TValue *i_o=(obj); \
+    i_o->value.gc=cast(GCObject *, (x)); i_o->tt=LUA_TUSERDATA; \
+    checkliveness(G(L),i_o); }
+
+#define setthvalue(L,obj,x) \
+  { TValue *i_o=(obj); \
+    i_o->value.gc=cast(GCObject *, (x)); i_o->tt=LUA_TTHREAD; \
+    checkliveness(G(L),i_o); }
+
+#define setclvalue(L,obj,x) \
+  { TValue *i_o=(obj); \
+    i_o->value.gc=cast(GCObject *, (x)); i_o->tt=LUA_TFUNCTION; \
+    checkliveness(G(L),i_o); }
+
+#define sethvalue(L,obj,x) \
+  { TValue *i_o=(obj); \
+    i_o->value.gc=cast(GCObject *, (x)); i_o->tt=LUA_TTABLE; \
+    checkliveness(G(L),i_o); }
+
+#define setptvalue(L,obj,x) \
+  { TValue *i_o=(obj); \
+    i_o->value.gc=cast(GCObject *, (x)); i_o->tt=LUA_TPROTO; \
+    checkliveness(G(L),i_o); }
+
+
+
+
+#define setobj(L,obj1,obj2) \
+  { const TValue *o2=(obj2); TValue *o1=(obj1); \
+    o1->value = o2->value; o1->tt=o2->tt; \
+    checkliveness(G(L),o1); }
+
+
+/*
+** different types of sets, according to destination
+*/
+
+/* from stack to (same) stack */
+#define setobjs2s       setobj
+/* to stack (not from same stack) */
+#define setobj2s        setobj
+#define setsvalue2s     setsvalue
+#define sethvalue2s     sethvalue
+#define setptvalue2s    setptvalue
+/* from table to same table */
+#define setobjt2t       setobj
+/* to table */
+#define setobj2t        setobj
+/* to new object */
+#define setobj2n        setobj
+#define setsvalue2n     setsvalue
+
+#define setttype(obj, tt) (ttype(obj) = (tt))
+
+
+#define iscollectable(o)        (ttype(o) >= LUA_TSTRING)
+
+
+
+typedef TValue *StkId;  /* index to stack elements */
+
+
+/*
+** String headers for string table
+*/
+typedef union TString {
+  L_Umaxalign dummy;  /* ensures maximum alignment for strings */
+  struct {
+    CommonHeader;
+    lu_byte reserved;
+    unsigned int hash;
+    size_t len;
+  } tsv;
+} TString;
+
+
+#define getstr(ts)      cast(const char *, (ts) + 1)
+#define svalue(o)       getstr(rawtsvalue(o))
+
+
+
+typedef union Udata {
+  L_Umaxalign dummy;  /* ensures maximum alignment for `local' udata */
+  struct {
+    CommonHeader;
+    struct Table *metatable;
+    struct Table *env;
+    size_t len;
+  } uv;
+} Udata;
+
+
+
+
+/*
+** Function Prototypes
+*/
+typedef struct Proto {
+  CommonHeader;
+  TValue *k;  /* constants used by the function */
+  Instruction *code;
+  struct Proto **p;  /* functions defined inside the function */
+  int *lineinfo;  /* map from opcodes to source lines */
+  struct LocVar *locvars;  /* information about local variables */
+  TString **upvalues;  /* upvalue names */
+  TString  *source;
+  int sizeupvalues;
+  int sizek;  /* size of `k' */
+  int sizecode;
+  int sizelineinfo;
+  int sizep;  /* size of `p' */
+  int sizelocvars;
+  int linedefined;
+  int lastlinedefined;
+  GCObject *gclist;
+  lu_byte nups;  /* number of upvalues */
+  lu_byte numparams;
+  lu_byte is_vararg;
+  lu_byte maxstacksize;
+} Proto;
+
+
+/* masks for new-style vararg */
+#define VARARG_HASARG           1
+#define VARARG_ISVARARG         2
+#define VARARG_NEEDSARG         4
+
+
+typedef struct LocVar {
+  TString *varname;
+  int startpc;  /* first point where variable is active */
+  int endpc;    /* first point where variable is dead */
+} LocVar;
+
+
+
+/*
+** Upvalues
+*/
+
+typedef struct UpVal {
+  CommonHeader;
+  TValue *v;  /* points to stack or to its own value */
+  union {
+    TValue value;  /* the value (when closed) */
+    struct {  /* double linked list (when open) */
+      struct UpVal *prev;
+      struct UpVal *next;
+    } l;
+  } u;
+} UpVal;
+
+
+/*
+** Closures
+*/
+
+#define ClosureHeader \
+        CommonHeader; lu_byte isC; lu_byte nupvalues; GCObject *gclist; \
+        struct Table *env
+
+typedef struct CClosure {
+  ClosureHeader;
+  lua_CFunction f;
+  TValue upvalue[1];
+} CClosure;
+
+
+typedef struct LClosure {
+  ClosureHeader;
+  struct Proto *p;
+  UpVal *upvals[1];
+} LClosure;
+
+
+typedef union Closure {
+  CClosure c;
+  LClosure l;
+} Closure;
+
+
+#define iscfunction(o)  (ttype(o) == LUA_TFUNCTION && clvalue(o)->c.isC)
+#define isLfunction(o)  (ttype(o) == LUA_TFUNCTION && !clvalue(o)->c.isC)
+
+
+/*
+** Tables
+*/
+
+typedef union TKey {
+  struct {
+    TValuefields;
+    struct Node *next;  /* for chaining */
+  } nk;
+  TValue tvk;
+} TKey;
+
+
+typedef struct Node {
+  TValue i_val;
+  TKey i_key;
+} Node;
+
+
+typedef struct Table {
+  CommonHeader;
+  lu_byte flags;  /* 1<<p means tagmethod(p) is not present */ 
+  lu_byte lsizenode;  /* log2 of size of `node' array */
+  struct Table *metatable;
+  TValue *array;  /* array part */
+  Node *node;
+  Node *lastfree;  /* any free position is before this position */
+  GCObject *gclist;
+  int sizearray;  /* size of `array' array */
+} Table;
+
+
+
+/*
+** `module' operation for hashing (size is always a power of 2)
+*/
+#define lmod(s,size) \
+        (check_exp((size&(size-1))==0, (cast(int, (s) & ((size)-1)))))
+
+
+#define twoto(x)        (1<<(x))
+#define sizenode(t)     (twoto((t)->lsizenode))
+
+
+#define luaO_nilobject          (&luaO_nilobject_)
+
+LUAI_DATA const TValue luaO_nilobject_;
+
+#define ceillog2(x)     (luaO_log2((x)-1) + 1)
+
+LUAI_FUNC int luaO_log2 (unsigned int x);
+LUAI_FUNC int luaO_int2fb (unsigned int x);
+LUAI_FUNC int luaO_fb2int (int x);
+LUAI_FUNC int luaO_rawequalObj (const TValue *t1, const TValue *t2);
+LUAI_FUNC int luaO_str2d (const char *s, lua_Number *result);
+LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt,
+                                                       va_list argp);
+LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...);
+LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t len);
+
+
+#endif
+