misc/liblua/llex.h
author unc0rr
Sat, 01 Nov 2014 22:51:07 +0300
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parent 10017 de822cd3df3a
permissions -rw-r--r--
- Store index of color instead of its value - Reset game config when switching pages
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/*
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** $Id: llex.h,v 1.58.1.1 2007/12/27 13:02:25 roberto Exp $
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** Lexical Analyzer
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** See Copyright Notice in lua.h
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*/
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#ifndef llex_h
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#define llex_h
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#include "lobject.h"
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#include "lzio.h"
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#define FIRST_RESERVED  257
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/* maximum length of a reserved word */
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#define TOKEN_LEN   (sizeof("function")/sizeof(char))
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/*
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* WARNING: if you change the order of this enumeration,
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* grep "ORDER RESERVED"
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*/
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enum RESERVED {
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  /* terminal symbols denoted by reserved words */
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  TK_AND = FIRST_RESERVED, TK_BREAK,
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  TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION,
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  TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
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  TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
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  /* other terminal symbols */
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  TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_NUMBER,
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  TK_NAME, TK_STRING, TK_EOS
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};
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/* number of reserved words */
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#define NUM_RESERVED    (cast(int, TK_WHILE-FIRST_RESERVED+1))
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/* array with token `names' */
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LUAI_DATA const char *const luaX_tokens [];
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typedef union {
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  lua_Number r;
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  TString *ts;
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} SemInfo;  /* semantics information */
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typedef struct Token {
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  int token;
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  SemInfo seminfo;
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} Token;
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typedef struct LexState {
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  int current;  /* current character (charint) */
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  int linenumber;  /* input line counter */
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  int lastline;  /* line of last token `consumed' */
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  Token t;  /* current token */
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  Token lookahead;  /* look ahead token */
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  struct FuncState *fs;  /* `FuncState' is private to the parser */
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  struct lua_State *L;
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  ZIO *z;  /* input stream */
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  Mbuffer *buff;  /* buffer for tokens */
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  TString *source;  /* current source name */
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  char decpoint;  /* locale decimal point */
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} LexState;
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LUAI_FUNC void luaX_init (lua_State *L);
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LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z,
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                              TString *source);
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LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l);
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LUAI_FUNC void luaX_next (LexState *ls);
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LUAI_FUNC void luaX_lookahead (LexState *ls);
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LUAI_FUNC void luaX_lexerror (LexState *ls, const char *msg, int token);
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LUAI_FUNC void luaX_syntaxerror (LexState *ls, const char *s);
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LUAI_FUNC const char *luaX_token2str (LexState *ls, int token);
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#endif