cc65/test/ref/yacc2.c

/*
  !!DESCRIPTION!!
  !!ORIGIN!!      testsuite
  !!LICENCE!!     Public Domain
  !!AUTHOR!!      Groepaz/Hitmen
*/

#include <stdio.h>

# 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},  {1,3},
        {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},  {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},  {1,5},  {5,7},  {5,7},
        {5,7},  {5,7},  {5,7},  {5,7},
        {5,7},  {5,7},  {5,7},  {5,7},
        {0,0},  {0,0},  {0,0},  {0,0},
/* 0x40 */
        {0,0},  {0,0},  {1,6},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {0,0},  {0,0},  {0,0},

        {0,0},  {0,0},  {0,0},  {0,0},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},

        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {0,0},  {0,0},

        {0,0},  {0,0},  {6,8},  {0,0},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},
/* 0x80 */
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {0,0},  {0,0},

#ifdef CHARSETHACK
        {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},  {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},  {0,0},  {0,0},
        {0,0},  {0,0},  {0,0},  {0,0},

/* 0xc0 */
        {0,0},  {0,0},  {1,6},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {6,8},  {6,8},  {6,8},
        {6,8},  {0,0},  {0,0},  {0,0},
#endif
        {0,0}
};

struct yywork *yytop = yycrank+255;

int yyvstop[] =
{
        0,4,0,3,4,0,2,4,0,1,4,0,2,0,1,0,0
};

struct yysvf
{
        struct yywork *yystoff;
        struct yysvf *yyother;
        int *yystops;
};

struct yysvf yysvec[] =
{
        {0,     0,      0},
        {yycrank+-1,    0,              0},
        {yycrank+0,     yysvec+1,       0},
        {yycrank+0,     0,              yyvstop+1},
        {yycrank+0,     0,              yyvstop+3},
        {yycrank+2,     0,              yyvstop+6},
        {yycrank+19,    0,              yyvstop+9},
        {yycrank+0,     yysvec+5,       yyvstop+12},
        {yycrank+0,     yysvec+6,       yyvstop+14},
        {0,     0,      0}
};

#if 0
# define input() (((yytchar=yysptr>yysbuf?U(*--yysptr):GETCHAR())==('\n')?(yylineno++,yytchar):yytchar)==EOF?0:yytchar)
// *yylastch++ = yych = input();
void subtest1(void)
{
        *yylastch++ = yych = input();
}
#endif

// do some bogus operation to destroy all registers etc
static int bog=1234;
#if 0
void bogus(void)
{
        bog*=0x1234;
}
#else
#define bogus() bog+=0x1234
#endif

#if 1
// yyt = yyt + yych;
void subtest2(void)
{
        register struct yywork *yyt;
        int yych;

        yyt=yycrank;
        yych=10;

        bogus();
        yyt = yyt + yych;

        printf("yyt: %d %d\n",yyt->verify,yyt->advance);
}
#endif

#if 1
// if(yyt <= yytop && yyt->verify+yysvec == yystate)
void subtest3(void)
{
        register struct yywork *yyt;
        register struct yysvf *yystate;

        yyt=yycrank;
        yystate=yysvec;

        bogus();
        if(yyt <= yytop && yyt->verify+yysvec == yystate)
        {
                printf("if ok %d %d\n",yyt->verify,yyt->advance);
        }
        else
        {
                printf("if not ok %d %d\n",yyt->verify,yyt->advance);
        }
}
#endif

short yyr2[]=
{
   0,   0,   2,   3,   3,   3,   3,   3,   3,   3,
   2,   3,   1,   1,   1
};

// yyps -= yyr2[yyn];
void subtest4(void)
{
        register short *yyps, yyn;

        yyps=0x8004;
        yyn=0;

        while(yyn<14)
        {
                bogus();
                yyps -= yyr2[yyn];

                yyn++;
        }
        printf("yyps: %04x\n",yyps);
}

#if 1

int yylookret=10;
yylook()
{
        yylookret--;
        return yylookret;
}

// while((nstr = yylook()) >= 0)
void subtest5(void)
{
        int nstr;

        bogus();
        while((nstr = yylook()) >= 0)
        {
                printf("nstr: %04x\n",nstr);
                bogus();
        }
}
#endif

int main(void)
{
//    subtest1();
    subtest2();
    subtest3();
    subtest4();
    subtest5();

    return 0;
}