first implementation of centralized global state.

llex.h

@@ -1,5 +1,5 @@
 /*
-** $Id: llex.h,v 1.1 1997/09/16 19:25:59 roberto Exp roberto $
+** $Id: llex.h,v 1.2 1997/11/04 15:27:53 roberto Exp roberto $
 ** Lexical Analizer
 ** See Copyright Notice in lua.h
 */
@@ -11,11 +11,39 @@
 #include "lzio.h"
 
 
+#define MAX_IFS 5
+
+/* "ifstate" keeps the state of each nested $if the lexical is dealing with. */
+
+struct ifState {
+  int elsepart;  /* true if its in the $else part */
+  int condition;  /* true if $if condition is true */
+  int skip;  /* true if part must be skiped */
+};
+
+struct textBuff {
+  char *text;
+  int tokensize;
+  int buffsize;
+};
+
+
+typedef struct LexState {
+  int current;  /* look ahead character */
+  struct zio *lex_z;
+  int linenumber;
+  struct ifState ifstate[MAX_IFS];
+  int iflevel;  /* level of nested $if's (for lexical analysis) */
+  struct textBuff textbuff;
+  int linelasttoken;
+  int lastline;
+} LexState;
+
+
 extern int luaX_linenumber;
 
 
 void luaX_init (void);
-int  luaY_lex (void);
 void luaX_setinput (ZIO *z);
 char *luaX_lasttoken (void);