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-rw-r--r--lua-5.3.5/llex.h85
1 files changed, 85 insertions, 0 deletions
diff --git a/lua-5.3.5/llex.h b/lua-5.3.5/llex.h
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+++ b/lua-5.3.5/llex.h
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+/*
+** $Id: llex.h,v 1.79.1.1 2017/04/19 17:20:42 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
+
+
+#if !defined(LUA_ENV)
+#define LUA_ENV "_ENV"
+#endif
+
+
+/*
+* 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_GOTO, 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_IDIV, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE,
+ TK_SHL, TK_SHR,
+ TK_DBCOLON, TK_EOS,
+ TK_FLT, TK_INT, TK_NAME, TK_STRING
+};
+
+/* number of reserved words */
+#define NUM_RESERVED (cast(int, TK_WHILE-FIRST_RESERVED+1))
+
+
+typedef union {
+ lua_Number r;
+ lua_Integer i;
+ TString *ts;
+} SemInfo; /* semantics information */
+
+
+typedef struct Token {
+ int token;
+ SemInfo seminfo;
+} Token;
+
+
+/* state of the lexer plus state of the parser when shared by all
+ functions */
+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; /* current function (parser) */
+ struct lua_State *L;
+ ZIO *z; /* input stream */
+ Mbuffer *buff; /* buffer for tokens */
+ Table *h; /* to avoid collection/reuse strings */
+ struct Dyndata *dyd; /* dynamic structures used by the parser */
+ TString *source; /* current source name */
+ TString *envn; /* environment variable name */
+} LexState;
+
+
+LUAI_FUNC void luaX_init (lua_State *L);
+LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z,
+ TString *source, int firstchar);
+LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l);
+LUAI_FUNC void luaX_next (LexState *ls);
+LUAI_FUNC int luaX_lookahead (LexState *ls);
+LUAI_FUNC l_noret luaX_syntaxerror (LexState *ls, const char *s);
+LUAI_FUNC const char *luaX_token2str (LexState *ls, int token);
+
+
+#endif