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-rw-r--r--src/llex.h70
1 files changed, 39 insertions, 31 deletions
diff --git a/src/llex.h b/src/llex.h
index 7c1a4be1..3b379960 100644
--- a/src/llex.h
+++ b/src/llex.h
@@ -1,5 +1,5 @@
/*
-** $Id: llex.h,v 1.12 1999/06/17 17:04:03 roberto Exp $
+** $Id: llex.h,v 1.31 2000/09/27 17:41:58 roberto Exp $
** Lexical Analyzer
** See Copyright Notice in lua.h
*/
@@ -11,53 +11,61 @@
#include "lzio.h"
-#define FIRST_RESERVED 260
+#define FIRST_RESERVED 257
-/* maximum length of a reserved word (+1 for terminal 0) */
+/* maximum length of a reserved word (+1 for final 0) */
#define TOKEN_LEN 15
+
+/*
+* WARNING: if you change the order of this enumeration,
+* grep "ORDER RESERVED"
+*/
enum RESERVED {
/* terminal symbols denoted by reserved words */
- AND = FIRST_RESERVED,
- DO, ELSE, ELSEIF, END, FUNCTION, IF, LOCAL, NIL, NOT, OR,
- REPEAT, RETURN, THEN, UNTIL, WHILE,
+ TK_AND = FIRST_RESERVED, TK_BREAK,
+ TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FOR, TK_FUNCTION, TK_IF, TK_LOCAL,
+ TK_NIL, TK_NOT, TK_OR, TK_REPEAT, TK_RETURN, TK_THEN, TK_UNTIL, TK_WHILE,
/* other terminal symbols */
- NAME, CONC, DOTS, EQ, GE, LE, NE, NUMBER, STRING, EOS};
+ TK_NAME, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_NUMBER,
+ TK_STRING, TK_EOS
+};
+/* number of reserved words */
+#define NUM_RESERVED ((int)(TK_WHILE-FIRST_RESERVED+1))
-#ifndef MAX_IFS
-#define MAX_IFS 5 /* arbitrary limit */
-#endif
-/* "ifstate" keeps the state of each nested $if the lexical is dealing with. */
+typedef union {
+ Number r;
+ TString *ts;
+} SemInfo; /* semantics information */
-struct ifState {
- int elsepart; /* true if it's in the $else part */
- int condition; /* true if $if condition is true */
- int skip; /* true if part must be skipped */
-};
+
+typedef struct Token {
+ int token;
+ SemInfo seminfo;
+} Token;
typedef struct LexState {
- int current; /* look ahead character */
- int token; /* look ahead token */
- struct FuncState *fs; /* 'FuncState' is private for the parser */
- union {
- real r;
- TaggedString *ts;
- } seminfo; /* semantics information */
- struct zio *lex_z; /* input stream */
+ int current; /* current character */
+ Token t; /* current token */
+ Token lookahead; /* look ahead token */
+ struct FuncState *fs; /* `FuncState' is private to the parser */
+ struct lua_State *L;
+ struct zio *z; /* input stream */
int linenumber; /* input line counter */
- int iflevel; /* level of nested $if's (for lexical analysis) */
- struct ifState ifstate[MAX_IFS];
+ int lastline; /* line of last token `consumed' */
+ TString *source; /* current source name */
} LexState;
-void luaX_init (void);
-void luaX_setinput (LexState *LS, ZIO *z);
-int luaX_lex (LexState *LS);
-void luaX_syntaxerror (LexState *ls, char *s, char *token);
-void luaX_error (LexState *ls, char *s);
+void luaX_init (lua_State *L);
+void luaX_setinput (lua_State *L, LexState *LS, ZIO *z, TString *source);
+int luaX_lex (LexState *LS, SemInfo *seminfo);
+void luaX_checklimit (LexState *ls, int val, int limit, const char *msg);
+void luaX_syntaxerror (LexState *ls, const char *s, const char *token);
+void luaX_error (LexState *ls, const char *s, int token);
void luaX_token2str (int token, char *s);