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- # 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 200
- # 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;
- /*
- token.lm
-
- This file defines the tokens that the Expression grammar is built on. To
- fully understand this file, you will need to understand lex. The basic
- idea is that lex scans a text stream and breaks that stream up into tokens
- which are then fed to the grammar (defined in yacc). Whitespace is ignored
- so the grammar is just fed a steady stream of significant tokens.
- */
-
- /*
- * These are the routines lex calls to get another character as it parses.
- * By default they are macros which read from stdin. We toss the default
- * macro definitions and supply our own versions of these, which will feed
- * lex characters from the expression string we are parsing.
- */
- #undef input
- #undef unput
- #undef output
- static int input();
- static void unput(char c);
- static void output(char c);
-
- #import <stdlib.h>
- #import <string.h>
- #import <math.h>
- #import "exprDefs.h"
- #import "y.tab.h"
-
- /* global which holds the string we are parsing */
- static const char *CurrText;
-
- /* glue to get rid of compiler warnings */
- extern yylook(), yyback();
- static int yywrap();
- # define YYNEWLINE 10
- int yylex(){
- int nstr; extern int yyprevious;
- while((nstr = yylook()) >= 0)
- yyfussy: switch(nstr){
- case 0:
- if(yywrap()) return(0); break;
- case 1:
- { /* whitespace - we ignore it */
- ;
- }
- break;
- case 2:
- { /* an integer */
- yylval.integer = atoi(yytext);
- return INTEGER;
- }
- break;
- case 3:
- { /* a float */
- yylval.real = atof(yytext);
- return NUMBER;
- }
- break;
- case 4:
- { /* a radix number */
- int radix;
- register int mult = 1;
- register char *c, *stop;
- register unsigned int accum = 0;
- register int charVal;
-
- sscanf( yytext, "%d#", &radix );
- for( stop = yytext; *stop++ != '#'; ); /* skip the pound sign */
- for( c = yytext+yyleng-1; c >= stop; c--, mult *= radix ) {
- if( *c >= '0' && *c <= '9' )
- charVal = *c - '0';
- else if( *c >= 'A' && *c <= 'Z' )
- charVal = *c - 'A' + 10;
- else
- charVal = *c - 'a' + 10;
- accum += mult * charVal;
- }
- yylval.real = accum;
- return NUMBER;
- }
- break;
- case 5:
- { /* the constant pi */
- yylval.real = M_PI;
- return NUMBER;
- }
- break;
- case 6:
- { /* the constant e */
- yylval.real = M_E;
- return NUMBER;
- }
- break;
- case 7:
- { /* a single char that must be recognized */
- return yytext[0];
- }
- break;
- case 8:
- { /* an identifier */
- yylval.string = NXZoneMalloc(NXDefaultMallocZone(), yyleng+1);
- bcopy(yytext, yylval.string, yyleng);
- yylval.string[yyleng] = '\0';
- return IDENTIFIER;
- }
- break;
- case 9:
- { /* other garbage chars (last rule is the default) */
- yylval.character = yytext[0];
- return BADCHAR;
- }
- break;
- case -1:
- break;
- default:
- fprintf(yyout,"bad switch yylook %d",nstr);
- } return(0); }
- /* end of yylex */
-
- /* inits the global string to the one we will parse */
- void _EXPPrepareToScan(const char *text)
- {
- CurrText = text;
- }
-
- /* tells lex there's really no more input when we're done */
- static int yywrap()
- {
- return 1;
- }
-
- /* returns the next char of the string we're parsing */
- static int input()
- {
- return *CurrText++;
- }
-
- /* lets lex back up one char in the string we're parsing */
- static void unput(char c)
- {
- --CurrText;
- }
-
- /* called by lex when it wants to output a char. This should never happen. */
- static void output(char c)
- {
- fprintf(stderr, "lex output function called with char '%c'\n", c);
- }
- int yyvstop[] ={
- 0,
-
- 9,
- 0,
-
- 1,
- 9,
- 0,
-
- 1,
- 0,
-
- 7,
- 9,
- 0,
-
- 7,
- 9,
- 0,
-
- 9,
- 0,
-
- 2,
- 9,
- 0,
-
- 8,
- 9,
- 0,
-
- 6,
- 8,
- 9,
- 0,
-
- 8,
- 9,
- 0,
-
- 3,
- 0,
-
- 3,
- 0,
-
- 2,
- 0,
-
- 8,
- 0,
-
- 5,
- 8,
- 0,
-
- 4,
- 0,
-
- 3,
- 0,
-
- 3,
- 0,
-
- 3,
- 0,
-
- 3,
- 0,
-
- 3,
- 0,
- 0};
- # define YYTYPE unsigned 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,
- 4,5, 4,5, 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, 0,0, 4,5,
- 0,0, 0,0, 1,6, 0,0,
- 0,0, 0,0, 0,0, 0,0,
- 1,7, 0,0, 0,0, 1,8,
- 2,8, 1,9, 7,13, 0,0,
- 7,14, 7,14, 7,14, 7,14,
- 7,14, 7,14, 7,14, 7,14,
- 7,14, 7,14, 0,0, 0,0,
- 0,0, 0,0, 1,10, 0,0,
- 0,0, 0,0, 1,10, 8,15,
- 8,15, 8,15, 8,15, 8,15,
- 8,15, 8,15, 8,15, 8,15,
- 8,15, 0,0, 0,0, 0,0,
- 0,0, 0,0, 17,24, 17,24,
- 17,24, 17,24, 17,24, 17,24,
- 17,24, 17,24, 17,24, 17,24,
- 1,10, 0,0, 0,0, 0,0,
- 0,0, 0,0, 1,11, 2,11,
- 9,16, 15,22, 0,0, 17,25,
- 24,30, 0,0, 0,0, 0,0,
- 0,0, 1,12, 2,12, 9,17,
- 12,21, 9,18, 9,18, 9,18,
- 9,18, 9,18, 9,18, 9,18,
- 9,18, 9,18, 9,18, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 15,22, 9,19, 17,25,
- 24,30, 0,0, 0,0, 0,0,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 9,19, 0,0,
- 0,0, 0,0, 10,20, 0,0,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 10,20, 10,20,
- 10,20, 10,20, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 0,0, 0,0, 0,0, 0,0,
- 0,0, 0,0, 0,0, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 0,0, 0,0, 0,0,
- 0,0, 0,0, 0,0, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 16,23, 16,23, 16,23,
- 16,23, 19,26, 0,0, 19,26,
- 0,0, 0,0, 19,27, 19,27,
- 19,27, 19,27, 19,27, 19,27,
- 19,27, 19,27, 19,27, 19,27,
- 22,28, 0,0, 22,28, 0,0,
- 0,0, 22,29, 22,29, 22,29,
- 22,29, 22,29, 22,29, 22,29,
- 22,29, 22,29, 22,29, 25,31,
- 0,0, 25,31, 0,0, 0,0,
- 25,32, 25,32, 25,32, 25,32,
- 25,32, 25,32, 25,32, 25,32,
- 25,32, 25,32, 26,27, 26,27,
- 26,27, 26,27, 26,27, 26,27,
- 26,27, 26,27, 26,27, 26,27,
- 28,29, 28,29, 28,29, 28,29,
- 28,29, 28,29, 28,29, 28,29,
- 28,29, 28,29, 30,33, 0,0,
- 30,33, 0,0, 0,0, 30,34,
- 30,34, 30,34, 30,34, 30,34,
- 30,34, 30,34, 30,34, 30,34,
- 30,34, 31,32, 31,32, 31,32,
- 31,32, 31,32, 31,32, 31,32,
- 31,32, 31,32, 31,32, 33,34,
- 33,34, 33,34, 33,34, 33,34,
- 33,34, 33,34, 33,34, 33,34,
- 33,34, 0,0, 0,0, 0,0,
- 0,0};
- struct yysvf yysvec[] ={
- 0, 0, 0,
- yycrank+-1, 0, 0,
- yycrank+-2, yysvec+1, 0,
- yycrank+0, 0, yyvstop+1,
- yycrank+3, 0, yyvstop+3,
- yycrank+0, yysvec+4, yyvstop+6,
- yycrank+0, 0, yyvstop+8,
- yycrank+4, 0, yyvstop+11,
- yycrank+23, 0, yyvstop+14,
- yycrank+69, 0, yyvstop+16,
- yycrank+79, 0, yyvstop+19,
- yycrank+0, yysvec+10, yyvstop+22,
- yycrank+11, yysvec+10, yyvstop+26,
- yycrank+0, yysvec+8, 0,
- yycrank+0, yysvec+7, 0,
- yycrank+36, yysvec+8, yyvstop+29,
- yycrank+154, 0, 0,
- yycrank+38, 0, yyvstop+31,
- yycrank+0, yysvec+9, yyvstop+33,
- yycrank+234, 0, 0,
- yycrank+0, yysvec+10, yyvstop+35,
- yycrank+0, yysvec+10, yyvstop+37,
- yycrank+249, 0, 0,
- yycrank+0, yysvec+16, yyvstop+40,
- yycrank+39, yysvec+17, yyvstop+42,
- yycrank+264, 0, 0,
- yycrank+274, 0, 0,
- yycrank+0, yysvec+26, yyvstop+44,
- yycrank+284, 0, 0,
- yycrank+0, yysvec+28, yyvstop+46,
- yycrank+299, 0, 0,
- yycrank+309, 0, 0,
- yycrank+0, yysvec+31, yyvstop+48,
- yycrank+319, 0, 0,
- yycrank+0, yysvec+33, yyvstop+50,
- 0, 0, 0};
- struct yywork *yytop = yycrank+376;
- 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 ,01 ,
- '%' ,'%' ,'%' ,'+' ,01 ,'+' ,01 ,'%' ,
- '0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,
- '0' ,'0' ,01 ,01 ,01 ,01 ,01 ,01 ,
- 01 ,'A' ,'A' ,'A' ,'A' ,'E' ,'A' ,'A' ,
- 'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
- 'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
- 'A' ,'A' ,'A' ,01 ,01 ,01 ,'%' ,'_' ,
- 01 ,'A' ,'A' ,'A' ,'A' ,'E' ,'A' ,'A' ,
- '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};
- /* ncform 4.1 83/08/11 */
-
- 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;
- #if NeXT
- int yylook(){
- #else
- yylook(){
- #endif NeXT
- register struct yysvf *yystate, **lsp;
- register struct yywork *yyt;
- struct yysvf *yyz;
- int yych;
- struct yywork *yyr;
- # ifdef LEXDEBUG
- int debug;
- # endif
- char *yylastch;
- /* start off machines */
- # ifdef LEXDEBUG
- debug = 0;
- # endif
- 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){ /* may not be any transitions */
- yyz = yystate->yyother;
- if(yyz == 0)break;
- if(yyz->yystoff == yycrank)break;
- }
- *yylastch++ = yych = input();
- 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
- }
- }
- #if NeXT
- int yyback(p, m)
- int *p;
- int m;
- #else
- yyback(p, m)
- int *p;
- #endif NeXT
- {
- if (p==0) return(0);
- while (*p)
- {
- if (*p++ == m)
- return(1);
- }
- return(0);
- }
- /* the following are only used in the lex library */
- #if NeXT
- int yyinput(){
- #else
- yyinput(){
- #endif NeXT
- return(input());
- }
- #if NeXT
- void yyoutput(c)
- int c;
- {
- output(c);
- }
- #else
- yyoutput(c)
- int c; {
- output(c);
- }
- #endif NeXT
- #if NeXT
- void yyunput(c)
- int c;
- {
- unput(c);
- }
- #else
- yyunput(c)
- int c; {
- unput(c);
- }
- #endif NeXT
-