commit eca011188687bfacdfff221d8db190d817570599
parent 93683d530dde8ac24bce6a39af36ede9e142bb24
Author: Waldemar Celes <celes@tecgraf.puc-rio.br>
Date: Fri, 17 Dec 1993 16:53:23 -0200
LUA lexis description
Diffstat:
| D | lex_yy.c | | | 923 | ------------------------------------------------------------------------------- |
| A | lua.lex | | | 85 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
2 files changed, 85 insertions(+), 923 deletions(-)
diff --git a/lex_yy.c b/lex_yy.c
@@ -1,923 +0,0 @@
-# include "stdio.h"
-# define U(x) x
-# define NLSTATE yyprevious=YYNEWLINE
-# define BEGIN yybgin = yysvec + 1 +
-# define INITIAL 0
-# define YYLERR yysvec
-# define YYSTATE (yyestate-yysvec-1)
-# define YYOPTIM 1
-# define YYLMAX BUFSIZ
-# define output(c) putc(c,yyout)
-# define input() (((yytchar=yysptr>yysbuf?U(*--yysptr):getc(yyin))==10?(yylineno++,yytchar):yytchar)==EOF?0:yytchar)
-# define unput(c) {yytchar= (c);if(yytchar=='\n')yylineno--;*yysptr++=yytchar;}
-# define yymore() (yymorfg=1)
-# define ECHO fprintf(yyout, "%s",yytext)
-# define REJECT { nstr = yyreject(); goto yyfussy;}
-int yyleng; extern char yytext[];
-int yymorfg;
-extern char *yysptr, yysbuf[];
-int yytchar;
-FILE *yyin = {stdin}, *yyout = {stdout};
-extern int yylineno;
-struct yysvf {
- struct yywork *yystoff;
- struct yysvf *yyother;
- int *yystops;};
-struct yysvf *yyestate;
-extern struct yysvf yysvec[], *yybgin;
-#include <stdlib.h>
-#include <string.h>
-
-#include "opcode.h"
-#include "hash.h"
-#include "inout.h"
-#include "table.h"
-#include "y_tab.h"
-
-#undef input
-#undef unput
-
-static Input input;
-static Unput unput;
-
-void lua_setinput (Input fn)
-{
- input = fn;
-}
-
-void lua_setunput (Unput fn)
-{
- unput = fn;
-}
-
-char *lua_lasttext (void)
-{
- return yytext;
-}
-
-# define YYNEWLINE 10
-yylex(){
-int nstr; extern int yyprevious;
-while((nstr = yylook()) >= 0)
-yyfussy: switch(nstr){
-case 0:
-if(yywrap()) return(0); break;
-case 1:
- ;
-break;
-case 2:
- {yylval.vInt = 1; return DEBUG;}
-break;
-case 3:
- {yylval.vInt = 0; return DEBUG;}
-break;
-case 4:
- lua_linenumber++;
-break;
-case 5:
- ;
-break;
-case 6:
- return LOCAL;
-break;
-case 7:
- return IF;
-break;
-case 8:
- return THEN;
-break;
-case 9:
- return ELSE;
-break;
-case 10:
- return ELSEIF;
-break;
-case 11:
- return WHILE;
-break;
-case 12:
- return DO;
-break;
-case 13:
- return REPEAT;
-break;
-case 14:
- return UNTIL;
-break;
-case 15:
- {
- yylval.vWord = lua_nfile-1;
- return FUNCTION;
- }
-break;
-case 16:
- return END;
-break;
-case 17:
- return RETURN;
-break;
-case 18:
- return LOCAL;
-break;
-case 19:
- return NIL;
-break;
-case 20:
- return AND;
-break;
-case 21:
- return OR;
-break;
-case 22:
- return NOT;
-break;
-case 23:
- return NE;
-break;
-case 24:
- return LE;
-break;
-case 25:
- return GE;
-break;
-case 26:
- return CONC;
-break;
-case 27:
- case 28:
- {
- yylval.vWord = lua_findenclosedconstant (yytext);
- return STRING;
- }
-break;
-case 29:
-case 30:
-case 31:
-case 32:
-{
- yylval.vFloat = atof(yytext);
- return NUMBER;
- }
-break;
-case 33:
- {
- yylval.vWord = lua_findsymbol (yytext);
- return NAME;
- }
-break;
-case 34:
- return *yytext;
-break;
-case -1:
-break;
-default:
-fprintf(yyout,"bad switch yylook %d",nstr);
-} return(0); }
-/* end of yylex */
-int yyvstop[] = {
-0,
-
-1,
-0,
-
-1,
-0,
-
-34,
-0,
-
-1,
-34,
-0,
-
-4,
-0,
-
-34,
-0,
-
-34,
-0,
-
-34,
-0,
-
-34,
-0,
-
-29,
-34,
-0,
-
-34,
-0,
-
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-33,
-34,
-0,
-
-34,
-0,
-
-34,
-0,
-
-1,
-0,
-
-27,
-0,
-
-28,
-0,
-
-5,
-0,
-
-26,
-0,
-
-30,
-0,
-
-29,
-0,
-
-29,
-0,
-
-24,
-0,
-
-25,
-0,
-
-33,
-0,
-
-33,
-0,
-
-12,
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-7,
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-21,
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-23,
-0,
-
-29,
-30,
-0,
-
-31,
-0,
-
-20,
-33,
-0,
-
-33,
-0,
-
-16,
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-19,
-33,
-0,
-
-22,
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-32,
-0,
-
-9,
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-8,
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-31,
-32,
-0,
-
-33,
-0,
-
-33,
-0,
-
-6,
-18,
-33,
-0,
-
-33,
-0,
-
-33,
-0,
-
-14,
-33,
-0,
-
-11,
-33,
-0,
-
-10,
-33,
-0,
-
-33,
-0,
-
-13,
-33,
-0,
-
-17,
-33,
-0,
-
-2,
-0,
-
-33,
-0,
-
-15,
-33,
-0,
-
-3,
-0,
-0};
-# define YYTYPE char
-struct yywork { YYTYPE verify, advance; } yycrank[] = {
-0,0, 0,0, 1,3, 0,0,
-0,0, 0,0, 0,0, 0,0,
-0,0, 0,0, 1,4, 1,5,
-6,29, 4,28, 0,0, 0,0,
-0,0, 0,0, 7,31, 0,0,
-6,29, 6,29, 0,0, 0,0,
-0,0, 0,0, 7,31, 7,31,
-0,0, 0,0, 0,0, 0,0,
-0,0, 0,0, 0,0, 1,6,
-4,28, 0,0, 0,0, 0,0,
-1,7, 0,0, 0,0, 0,0,
-1,3, 6,30, 1,8, 1,9,
-0,0, 1,10, 6,29, 7,31,
-8,33, 0,0, 6,29, 0,0,
-7,32, 0,0, 0,0, 6,29,
-7,31, 1,11, 0,0, 1,12,
-2,27, 7,31, 1,13, 11,39,
-12,40, 1,13, 26,56, 0,0,
-0,0, 2,8, 2,9, 0,0,
-6,29, 0,0, 0,0, 6,29,
-0,0, 0,0, 7,31, 0,0,
-0,0, 7,31, 0,0, 0,0,
-2,11, 0,0, 2,12, 0,0,
-0,0, 0,0, 0,0, 0,0,
-0,0, 0,0, 1,14, 0,0,
-0,0, 1,15, 1,16, 1,17,
-0,0, 22,52, 1,18, 18,47,
-23,53, 1,19, 42,63, 1,20,
-1,21, 25,55, 14,42, 1,22,
-15,43, 1,23, 1,24, 16,44,
-1,25, 16,45, 17,46, 19,48,
-21,51, 2,14, 20,49, 1,26,
-2,15, 2,16, 2,17, 24,54,
-20,50, 2,18, 44,64, 45,65,
-2,19, 46,66, 2,20, 2,21,
-27,57, 48,67, 2,22, 49,68,
-2,23, 2,24, 50,69, 2,25,
-52,70, 53,72, 27,58, 54,73,
-52,71, 9,34, 2,26, 9,35,
-9,35, 9,35, 9,35, 9,35,
-9,35, 9,35, 9,35, 9,35,
-9,35, 10,36, 55,74, 10,37,
-10,37, 10,37, 10,37, 10,37,
-10,37, 10,37, 10,37, 10,37,
-10,37, 57,75, 58,76, 64,80,
-66,81, 67,82, 70,83, 71,84,
-72,85, 73,86, 74,87, 10,38,
-10,38, 38,61, 10,38, 38,61,
-75,88, 76,89, 38,62, 38,62,
-38,62, 38,62, 38,62, 38,62,
-38,62, 38,62, 38,62, 38,62,
-80,92, 81,93, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-82,94, 83,95, 84,96, 10,38,
-10,38, 86,97, 10,38, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 87,98, 88,99, 60,79,
-60,79, 13,41, 60,79, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 13,41, 13,41, 13,41,
-13,41, 33,33, 89,100, 60,79,
-60,79, 92,101, 60,79, 93,102,
-95,103, 33,33, 33,0, 96,104,
-99,105, 100,106, 102,107, 106,108,
-107,109, 35,35, 35,35, 35,35,
-35,35, 35,35, 35,35, 35,35,
-35,35, 35,35, 35,35, 108,110,
-0,0, 0,0, 0,0, 0,0,
-0,0, 0,0, 33,33, 0,0,
-0,0, 35,59, 35,59, 33,33,
-35,59, 0,0, 0,0, 33,33,
-0,0, 0,0, 0,0, 0,0,
-33,33, 0,0, 0,0, 0,0,
-0,0, 36,60, 36,60, 36,60,
-36,60, 36,60, 36,60, 36,60,
-36,60, 36,60, 36,60, 0,0,
-0,0, 33,33, 0,0, 0,0,
-33,33, 35,59, 35,59, 0,0,
-35,59, 36,38, 36,38, 59,77,
-36,38, 59,77, 0,0, 0,0,
-59,78, 59,78, 59,78, 59,78,
-59,78, 59,78, 59,78, 59,78,
-59,78, 59,78, 61,62, 61,62,
-61,62, 61,62, 61,62, 61,62,
-61,62, 61,62, 61,62, 61,62,
-0,0, 0,0, 0,0, 0,0,
-0,0, 36,38, 36,38, 0,0,
-36,38, 77,78, 77,78, 77,78,
-77,78, 77,78, 77,78, 77,78,
-77,78, 77,78, 77,78, 79,90,
-0,0, 79,90, 0,0, 0,0,
-79,91, 79,91, 79,91, 79,91,
-79,91, 79,91, 79,91, 79,91,
-79,91, 79,91, 90,91, 90,91,
-90,91, 90,91, 90,91, 90,91,
-90,91, 90,91, 90,91, 90,91,
-0,0};
-struct yysvf yysvec[] = {
-0, 0, 0,
-yycrank+-1, 0, yyvstop+1,
-yycrank+-28, yysvec+1, yyvstop+3,
-yycrank+0, 0, yyvstop+5,
-yycrank+4, 0, yyvstop+7,
-yycrank+0, 0, yyvstop+10,
-yycrank+-11, 0, yyvstop+12,
-yycrank+-17, 0, yyvstop+14,
-yycrank+7, 0, yyvstop+16,
-yycrank+107, 0, yyvstop+18,
-yycrank+119, 0, yyvstop+20,
-yycrank+6, 0, yyvstop+23,
-yycrank+7, 0, yyvstop+25,
-yycrank+158, 0, yyvstop+27,
-yycrank+4, yysvec+13, yyvstop+30,
-yycrank+5, yysvec+13, yyvstop+33,
-yycrank+11, yysvec+13, yyvstop+36,
-yycrank+5, yysvec+13, yyvstop+39,
-yycrank+5, yysvec+13, yyvstop+42,
-yycrank+12, yysvec+13, yyvstop+45,
-yycrank+21, yysvec+13, yyvstop+48,
-yycrank+10, yysvec+13, yyvstop+51,
-yycrank+4, yysvec+13, yyvstop+54,
-yycrank+4, yysvec+13, yyvstop+57,
-yycrank+21, yysvec+13, yyvstop+60,
-yycrank+9, yysvec+13, yyvstop+63,
-yycrank+9, 0, yyvstop+66,
-yycrank+40, 0, yyvstop+68,
-yycrank+0, yysvec+4, yyvstop+70,
-yycrank+0, yysvec+6, 0,
-yycrank+0, 0, yyvstop+72,
-yycrank+0, yysvec+7, 0,
-yycrank+0, 0, yyvstop+74,
-yycrank+-280, 0, yyvstop+76,
-yycrank+0, 0, yyvstop+78,
-yycrank+249, 0, yyvstop+80,
-yycrank+285, 0, yyvstop+82,
-yycrank+0, yysvec+10, yyvstop+84,
-yycrank+146, 0, 0,
-yycrank+0, 0, yyvstop+86,
-yycrank+0, 0, yyvstop+88,
-yycrank+0, yysvec+13, yyvstop+90,
-yycrank+10, yysvec+13, yyvstop+92,
-yycrank+0, yysvec+13, yyvstop+94,
-yycrank+19, yysvec+13, yyvstop+97,
-yycrank+35, yysvec+13, yyvstop+99,
-yycrank+27, yysvec+13, yyvstop+101,
-yycrank+0, yysvec+13, yyvstop+103,
-yycrank+42, yysvec+13, yyvstop+106,
-yycrank+35, yysvec+13, yyvstop+108,
-yycrank+30, yysvec+13, yyvstop+110,
-yycrank+0, yysvec+13, yyvstop+112,
-yycrank+36, yysvec+13, yyvstop+115,
-yycrank+48, yysvec+13, yyvstop+117,
-yycrank+35, yysvec+13, yyvstop+119,
-yycrank+61, yysvec+13, yyvstop+121,
-yycrank+0, 0, yyvstop+123,
-yycrank+76, 0, 0,
-yycrank+67, 0, 0,
-yycrank+312, 0, 0,
-yycrank+183, yysvec+36, yyvstop+125,
-yycrank+322, 0, 0,
-yycrank+0, yysvec+61, yyvstop+128,
-yycrank+0, yysvec+13, yyvstop+130,
-yycrank+78, yysvec+13, yyvstop+133,
-yycrank+0, yysvec+13, yyvstop+135,
-yycrank+81, yysvec+13, yyvstop+138,
-yycrank+84, yysvec+13, yyvstop+140,
-yycrank+0, yysvec+13, yyvstop+142,
-yycrank+0, yysvec+13, yyvstop+145,
-yycrank+81, yysvec+13, yyvstop+148,
-yycrank+66, yysvec+13, yyvstop+150,
-yycrank+74, yysvec+13, yyvstop+152,
-yycrank+80, yysvec+13, yyvstop+154,
-yycrank+78, yysvec+13, yyvstop+156,
-yycrank+94, 0, 0,
-yycrank+93, 0, 0,
-yycrank+341, 0, 0,
-yycrank+0, yysvec+77, yyvstop+158,
-yycrank+356, 0, 0,
-yycrank+99, yysvec+13, yyvstop+160,
-yycrank+89, yysvec+13, yyvstop+163,
-yycrank+108, yysvec+13, yyvstop+165,
-yycrank+120, yysvec+13, yyvstop+167,
-yycrank+104, yysvec+13, yyvstop+169,
-yycrank+0, yysvec+13, yyvstop+171,
-yycrank+113, yysvec+13, yyvstop+174,
-yycrank+148, yysvec+13, yyvstop+176,
-yycrank+133, 0, 0,
-yycrank+181, 0, 0,
-yycrank+366, 0, 0,
-yycrank+0, yysvec+90, yyvstop+178,
-yycrank+183, yysvec+13, yyvstop+181,
-yycrank+182, yysvec+13, yyvstop+183,
-yycrank+0, yysvec+13, yyvstop+185,
-yycrank+172, yysvec+13, yyvstop+189,
-yycrank+181, yysvec+13, yyvstop+191,
-yycrank+0, yysvec+13, yyvstop+193,
-yycrank+0, yysvec+13, yyvstop+196,
-yycrank+189, 0, 0,
-yycrank+195, 0, 0,
-yycrank+0, yysvec+13, yyvstop+199,
-yycrank+183, yysvec+13, yyvstop+202,
-yycrank+0, yysvec+13, yyvstop+204,
-yycrank+0, yysvec+13, yyvstop+207,
-yycrank+0, 0, yyvstop+210,
-yycrank+178, 0, 0,
-yycrank+186, yysvec+13, yyvstop+212,
-yycrank+204, 0, 0,
-yycrank+0, yysvec+13, yyvstop+214,
-yycrank+0, 0, yyvstop+217,
-0, 0, 0};
-struct yywork *yytop = yycrank+423;
-struct yysvf *yybgin = yysvec+1;
-char yymatch[] = {
-00 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
-01 ,011 ,012 ,01 ,01 ,01 ,01 ,01 ,
-01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
-01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
-011 ,01 ,'"' ,01 ,01 ,01 ,01 ,047 ,
-01 ,01 ,01 ,'+' ,01 ,'+' ,01 ,01 ,
-'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,
-'0' ,'0' ,01 ,01 ,01 ,01 ,01 ,01 ,
-01 ,'A' ,'A' ,'A' ,'D' ,'D' ,'A' ,'D' ,
-'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
-'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
-'A' ,'A' ,'A' ,01 ,01 ,01 ,01 ,'A' ,
-01 ,'A' ,'A' ,'A' ,'D' ,'D' ,'A' ,'D' ,
-'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
-'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
-'A' ,'A' ,'A' ,01 ,01 ,01 ,01 ,01 ,
-0};
-char yyextra[] = {
-0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,
-0};
-#ifndef lint
-static char ncform_sccsid[] = "@(#)ncform 1.6 88/02/08 SMI"; /* from S5R2 1.2 */
-#endif
-
-int yylineno =1;
-# define YYU(x) x
-# define NLSTATE yyprevious=YYNEWLINE
-char yytext[YYLMAX];
-struct yysvf *yylstate [YYLMAX], **yylsp, **yyolsp;
-char yysbuf[YYLMAX];
-char *yysptr = yysbuf;
-int *yyfnd;
-extern struct yysvf *yyestate;
-int yyprevious = YYNEWLINE;
-yylook(){
- register struct yysvf *yystate, **lsp;
- register struct yywork *yyt;
- struct yysvf *yyz;
- int yych, yyfirst;
- struct yywork *yyr;
-# ifdef LEXDEBUG
- int debug;
-# endif
- char *yylastch;
- /* start off machines */
-# ifdef LEXDEBUG
- debug = 0;
-# endif
- yyfirst=1;
- if (!yymorfg)
- yylastch = yytext;
- else {
- yymorfg=0;
- yylastch = yytext+yyleng;
- }
- for(;;){
- lsp = yylstate;
- yyestate = yystate = yybgin;
- if (yyprevious==YYNEWLINE) yystate++;
- for (;;){
-# ifdef LEXDEBUG
- if(debug)fprintf(yyout,"state %d\n",yystate-yysvec-1);
-# endif
- yyt = yystate->yystoff;
- if(yyt == yycrank && !yyfirst){ /* may not be any transitions */
- yyz = yystate->yyother;
- if(yyz == 0)break;
- if(yyz->yystoff == yycrank)break;
- }
- *yylastch++ = yych = input();
- yyfirst=0;
- tryagain:
-# ifdef LEXDEBUG
- if(debug){
- fprintf(yyout,"char ");
- allprint(yych);
- putchar('\n');
- }
-# endif
- yyr = yyt;
- if ( (int)yyt > (int)yycrank){
- yyt = yyr + yych;
- if (yyt <= yytop && yyt->verify+yysvec == yystate){
- if(yyt->advance+yysvec == YYLERR) /* error transitions */
- {unput(*--yylastch);break;}
- *lsp++ = yystate = yyt->advance+yysvec;
- goto contin;
- }
- }
-# ifdef YYOPTIM
- else if((int)yyt < (int)yycrank) { /* r < yycrank */
- yyt = yyr = yycrank+(yycrank-yyt);
-# ifdef LEXDEBUG
- if(debug)fprintf(yyout,"compressed state\n");
-# endif
- yyt = yyt + yych;
- if(yyt <= yytop && yyt->verify+yysvec == yystate){
- if(yyt->advance+yysvec == YYLERR) /* error transitions */
- {unput(*--yylastch);break;}
- *lsp++ = yystate = yyt->advance+yysvec;
- goto contin;
- }
- yyt = yyr + YYU(yymatch[yych]);
-# ifdef LEXDEBUG
- if(debug){
- fprintf(yyout,"try fall back character ");
- allprint(YYU(yymatch[yych]));
- putchar('\n');
- }
-# endif
- if(yyt <= yytop && yyt->verify+yysvec == yystate){
- if(yyt->advance+yysvec == YYLERR) /* error transition */
- {unput(*--yylastch);break;}
- *lsp++ = yystate = yyt->advance+yysvec;
- goto contin;
- }
- }
- if ((yystate = yystate->yyother) && (yyt= yystate->yystoff) != yycrank){
-# ifdef LEXDEBUG
- if(debug)fprintf(yyout,"fall back to state %d\n",yystate-yysvec-1);
-# endif
- goto tryagain;
- }
-# endif
- else
- {unput(*--yylastch);break;}
- contin:
-# ifdef LEXDEBUG
- if(debug){
- fprintf(yyout,"state %d char ",yystate-yysvec-1);
- allprint(yych);
- putchar('\n');
- }
-# endif
- ;
- }
-# ifdef LEXDEBUG
- if(debug){
- fprintf(yyout,"stopped at %d with ",*(lsp-1)-yysvec-1);
- allprint(yych);
- putchar('\n');
- }
-# endif
- while (lsp-- > yylstate){
- *yylastch-- = 0;
- if (*lsp != 0 && (yyfnd= (*lsp)->yystops) && *yyfnd > 0){
- yyolsp = lsp;
- if(yyextra[*yyfnd]){ /* must backup */
- while(yyback((*lsp)->yystops,-*yyfnd) != 1 && lsp > yylstate){
- lsp--;
- unput(*yylastch--);
- }
- }
- yyprevious = YYU(*yylastch);
- yylsp = lsp;
- yyleng = yylastch-yytext+1;
- yytext[yyleng] = 0;
-# ifdef LEXDEBUG
- if(debug){
- fprintf(yyout,"\nmatch ");
- sprint(yytext);
- fprintf(yyout," action %d\n",*yyfnd);
- }
-# endif
- return(*yyfnd++);
- }
- unput(*yylastch);
- }
- if (yytext[0] == 0 /* && feof(yyin) */)
- {
- yysptr=yysbuf;
- return(0);
- }
- yyprevious = yytext[0] = input();
- if (yyprevious>0)
- output(yyprevious);
- yylastch=yytext;
-# ifdef LEXDEBUG
- if(debug)putchar('\n');
-# endif
- }
- }
-yyback(p, m)
- int *p;
-{
-if (p==0) return(0);
-while (*p)
- {
- if (*p++ == m)
- return(1);
- }
-return(0);
-}
- /* the following are only used in the lex library */
-yyinput(){
- return(input());
- }
-yyoutput(c)
- int c; {
- output(c);
- }
-yyunput(c)
- int c; {
- unput(c);
- }
diff --git a/lua.lex b/lua.lex
@@ -0,0 +1,85 @@
+%{
+
+char *rcs_lualex = "$Id: $";
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "opcode.h"
+#include "hash.h"
+#include "inout.h"
+#include "table.h"
+#include "y.tab.h"
+
+#undef input
+#undef unput
+
+static Input input;
+static Unput unput;
+
+void lua_setinput (Input fn)
+{
+ input = fn;
+}
+
+void lua_setunput (Unput fn)
+{
+ unput = fn;
+}
+
+char *lua_lasttext (void)
+{
+ return yytext;
+}
+
+%}
+
+
+%%
+[ \t]* ;
+^"$debug" {yylval.vInt = 1; return DEBUG;}
+^"$nodebug" {yylval.vInt = 0; return DEBUG;}
+\n lua_linenumber++;
+"--".* ;
+"local" return LOCAL;
+"if" return IF;
+"then" return THEN;
+"else" return ELSE;
+"elseif" return ELSEIF;
+"while" return WHILE;
+"do" return DO;
+"repeat" return REPEAT;
+"until" return UNTIL;
+"function" {
+ yylval.vWord = lua_nfile-1;
+ return FUNCTION;
+ }
+"end" return END;
+"return" return RETURN;
+"local" return LOCAL;
+"nil" return NIL;
+"and" return AND;
+"or" return OR;
+"not" return NOT;
+"~=" return NE;
+"<=" return LE;
+">=" return GE;
+".." return CONC;
+\"[^\"]*\" |
+\'[^\']*\' {
+ yylval.vWord = lua_findenclosedconstant (yytext);
+ return STRING;
+ }
+[0-9]+("."[0-9]*)? |
+([0-9]+)?"."[0-9]+ |
+[0-9]+("."[0-9]*)?[dDeEgG][+-]?[0-9]+ |
+([0-9]+)?"."[0-9]+[dDeEgG][+-]?[0-9]+ {
+ yylval.vFloat = atof(yytext);
+ return NUMBER;
+ }
+[a-zA-Z_][a-zA-Z0-9_]* {
+ yylval.vWord = lua_findsymbol (yytext);
+ return NAME;
+ }
+. return *yytext;
+
