root/src/lua/src/llex.h

Revision 22d1941d0ca5ba7027cdfa51ce34bd1d8fb1931e, 2.1 kB (checked in by Theo Schlossnagle <jesus@omniti.com>, 10 years ago)

take the version out... it is what it is

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Line 
1 /*
2 ** $Id: llex.h,v 1.58.1.1 2007/12/27 13:02:25 roberto Exp $
3 ** Lexical Analyzer
4 ** See Copyright Notice in lua.h
5 */
6
7 #ifndef llex_h
8 #define llex_h
9
10 #include "lobject.h"
11 #include "lzio.h"
12
13
14 #define FIRST_RESERVED  257
15
16 /* maximum length of a reserved word */
17 #define TOKEN_LEN       (sizeof("function")/sizeof(char))
18
19
20 /*
21 * WARNING: if you change the order of this enumeration,
22 * grep "ORDER RESERVED"
23 */
24 enum RESERVED {
25   /* terminal symbols denoted by reserved words */
26   TK_AND = FIRST_RESERVED, TK_BREAK,
27   TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION,
28   TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
29   TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
30   /* other terminal symbols */
31   TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_NUMBER,
32   TK_NAME, TK_STRING, TK_EOS
33 };
34
35 /* number of reserved words */
36 #define NUM_RESERVED    (cast(int, TK_WHILE-FIRST_RESERVED+1))
37
38
39 /* array with token `names' */
40 LUAI_DATA const char *const luaX_tokens [];
41
42
43 typedef union {
44   lua_Number r;
45   TString *ts;
46 } SemInfo;  /* semantics information */
47
48
49 typedef struct Token {
50   int token;
51   SemInfo seminfo;
52 } Token;
53
54
55 typedef struct LexState {
56   int current;  /* current character (charint) */
57   int linenumber;  /* input line counter */
58   int lastline;  /* line of last token `consumed' */
59   Token t;  /* current token */
60   Token lookahead;  /* look ahead token */
61   struct FuncState *fs;  /* `FuncState' is private to the parser */
62   struct lua_State *L;
63   ZIO *z;  /* input stream */
64   Mbuffer *buff;  /* buffer for tokens */
65   TString *source;  /* current source name */
66   char decpoint;  /* locale decimal point */
67 } LexState;
68
69
70 LUAI_FUNC void luaX_init (lua_State *L);
71 LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z,
72                               TString *source);
73 LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l);
74 LUAI_FUNC void luaX_next (LexState *ls);
75 LUAI_FUNC void luaX_lookahead (LexState *ls);
76 LUAI_FUNC void luaX_lexerror (LexState *ls, const char *msg, int token);
77 LUAI_FUNC void luaX_syntaxerror (LexState *ls, const char *s);
78 LUAI_FUNC const char *luaX_token2str (LexState *ls, int token);
79
80
81 #endif
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