2 ** $Id: llex.h,v 1.78 2014/10/29 15:38:24 roberto Exp $
4 ** See Copyright Notice in lua.h
14 #define FIRST_RESERVED 257
18 #define LUA_ENV "_ENV"
23 * WARNING: if you change the order of this enumeration,
24 * grep "ORDER RESERVED"
27 /* terminal symbols denoted by reserved words */
28 TK_AND = FIRST_RESERVED, TK_BREAK,
29 TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION,
30 TK_GOTO, TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
31 TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
32 /* other terminal symbols */
33 TK_IDIV, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE,
36 TK_FLT, TK_INT, TK_NAME, TK_STRING
39 /* number of reserved words */
40 #define NUM_RESERVED (cast(int, TK_WHILE-FIRST_RESERVED+1))
47 } SemInfo; /* semantics information */
50 typedef struct Token {
56 /* state of the lexer plus state of the parser when shared by all
58 typedef struct LexState {
59 int current; /* current character (charint) */
60 int linenumber; /* input line counter */
61 int lastline; /* line of last token 'consumed' */
62 Token t; /* current token */
63 Token lookahead; /* look ahead token */
64 struct FuncState *fs; /* current function (parser) */
66 ZIO *z; /* input stream */
67 Mbuffer *buff; /* buffer for tokens */
68 Table *h; /* to avoid collection/reuse strings */
69 struct Dyndata *dyd; /* dynamic structures used by the parser */
70 TString *source; /* current source name */
71 TString *envn; /* environment variable name */
72 char decpoint; /* locale decimal point */
76 LUAI_FUNC void luaX_init (lua_State *L);
77 LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z,
78 TString *source, int firstchar);
79 LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l);
80 LUAI_FUNC void luaX_next (LexState *ls);
81 LUAI_FUNC int luaX_lookahead (LexState *ls);
82 LUAI_FUNC l_noret luaX_syntaxerror (LexState *ls, const char *s);
83 LUAI_FUNC const char *luaX_token2str (LexState *ls, int token);