deps/lua/src/llex.h

/*
** $Id: llex.h,v 1.58.1.1 2007/12/27 13:02:25 roberto Exp $
** Lexical Analyzer
** See Copyright Notice in lua.h
*/

#ifndef llex_h
#define llex_h

#include "lobject.h"
#include "lzio.h"


#define FIRST_RESERVED	257

/* maximum length of a reserved word */
#define TOKEN_LEN	(sizeof("function")/sizeof(char))


/*
* WARNING: if you change the order of this enumeration,
* grep "ORDER RESERVED"
*/
enum RESERVED {
  /* terminal symbols denoted by reserved words */
  TK_AND = FIRST_RESERVED, TK_BREAK,
  TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION,
  TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
  TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
  /* other terminal symbols */
  TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_NUMBER,
  TK_NAME, TK_STRING, TK_EOS
};

/* number of reserved words */
#define NUM_RESERVED	(cast(int, TK_WHILE-FIRST_RESERVED+1))


/* array with token `names' */
LUAI_DATA const char *const luaX_tokens [];


typedef union {
  lua_Number r;
  TString *ts;
} SemInfo;  /* semantics information */


typedef struct Token {
  int token;
  SemInfo seminfo;
} Token;


typedef struct LexState {
  int current;  /* current character (charint) */
  int linenumber;  /* input line counter */
  int lastline;  /* line of last token `consumed' */
  Token t;  /* current token */
  Token lookahead;  /* look ahead token */
  struct FuncState *fs;  /* `FuncState' is private to the parser */
  struct lua_State *L;
  ZIO *z;  /* input stream */
  Mbuffer *buff;  /* buffer for tokens */
  TString *source;  /* current source name */
  char decpoint;  /* locale decimal point */
} LexState;


LUAI_FUNC void luaX_init (lua_State *L);
LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z,
                              TString *source);
LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l);
LUAI_FUNC void luaX_next (LexState *ls);
LUAI_FUNC void luaX_lookahead (LexState *ls);
LUAI_FUNC void luaX_lexerror (LexState *ls, const char *msg, int token);
LUAI_FUNC void luaX_syntaxerror (LexState *ls, const char *s);
LUAI_FUNC const char *luaX_token2str (LexState *ls, int token);


#endif
Commit	Line	Data
	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