/*=========================================================================* This is an expression parser generated by BISON A2.6, then cleaned up slightly... there should be an easier way to do simple expression parsing! *=========================================================================*/ #include #include /*=========================================================================*/ int yylex(); void error(char *s, int tp); extern int nums[]; extern int vnum; int rval; int yychar; int yylval; int yynerrs; /*=========================================================================*/ static const char yytranslate[] = { 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 19, 2, 6, 2, 2, 11, 2, 2, 2, 16, 14, 2, 15, 2, 17, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 7, 5, 8, 2, 2, 4, 2, 2, 21, 2, 2, 9, 2, 2, 2, 2, 10, 2, 18, 3, 2, 2, 20, 2, 2, 2, 2, 2, 2, 2, 2, 23, 2, 24, 13, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 22, 2, 2, 2, 2, 2, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2 }; /*=========================================================================*/ static const short yyr1[] = { 0, 25, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26 }; /*=========================================================================*/ static const short yyr2[] = { 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 }; /*=========================================================================*/ static const short yydefact[] = { 0, 0, 0, 0, 0, 2, 0, 1, 4, 5, 6, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 21, 20, 18, 19, 14, 15, 17, 16, 8, 7, 9, 10, 11, 12, 13, 0, 0, 0 }; /*=========================================================================*/ static const short yydefgoto[] = { 44, 7 }; /*=========================================================================*/ static const short yypact[] = { 35, 35, 35, 35, 35,-32768, 35, 56,-32768,-32768,-32768, -32768, 24, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,-32768, 70, 83, 90, 90, 90, 90, 90, 90, -8, -8, -8, -6, -6,-32768,-32768, 4, 44,-32768 }; /*=========================================================================*/ static const short yypgoto[] = {-32768, -1 }; /*=========================================================================*/ static const short yytable[] = { 8, 9, 10, 11, 45, 12, 24, 25, 26, 27, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 1, 2, 46, 0, 0, 0, 28, 0, 3, 0, 0, 4, 0, 0, 0, 5, 6, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 21, 22, 23, 24, 25, 26, 27 }; /*=========================================================================*/ static const short yycheck[] = { 1, 2, 3, 4, 0, 6, 14, 15, 16, 17, 16, 17, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 7, 8, 0, -1, -1, -1, 24, -1, 15, -1, -1, 18, -1, -1, -1, 22, 23, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 11, 12, 13, 14, 15, 16, 17 }; /*=========================================================================*/ int yyparse() { int yystate; int yyn; short *yyssp; int *yyvsp; int yyerrstatus; int yychar1 = 0; short yyssa[200]; int yyvsa[200]; short *yyss = yyssa; int *yyvs = yyvsa; int yystacksize = 200 ; int yyval; int yylen; yystate = 0; yyerrstatus = 0; yynerrs = 0; yychar = -2 ; yyssp = yyss - 1; yyvsp = yyvs; yynewstate: *++yyssp = yystate; if (yyssp>=yyss+yystacksize-1) { error("Parser stack overflow",1); } yyn = yypact[yystate]; if (yyn == -32768 ) goto yydefault; if (yychar == -2 ) { yychar = yylex() ; } if (yychar <= 0) { yychar1 = 0; yychar = 0 ; } else { yychar1 = ((unsigned)( yychar ) <= 257 ? yytranslate[ yychar ] : 27) ; } yyn += yychar1; if (yyn < 0 || yyn > 107 || yycheck[yyn] != yychar1) goto yydefault; yyn = yytable[yyn]; if (yyn < 0) { if (yyn == -32768 ) goto yyerrlab; yyn = -yyn; goto yyreduce; } else if (yyn == 0) goto yyerrlab; if (yyn == 46 ) return(0) ; if (yychar != 0 ) yychar = -2 ; *++yyvsp = yylval; if (yyerrstatus) yyerrstatus--; yystate = yyn; goto yynewstate; yydefault: yyn = yydefact[yystate]; if (yyn == 0) goto yyerrlab; yyreduce: yylen = yyr2[yyn]; if (yylen > 0) yyval = yyvsp[1-yylen]; switch (yyn) { case 1: rval=yyvsp[0]; break; case 2: yyval=nums[vnum++]; break; case 3: yyval=!yyvsp[0]; break; case 4: yyval=(yyvsp[0])&0xff; break; case 5: yyval=((yyvsp[0])>>8)&0xff; break; case 6: yyval=-(yyvsp[0]); break; case 7: yyval=yyvsp[-2]|yyvsp[0]; break; case 8: yyval=yyvsp[-2]&yyvsp[0]; break; case 9: yyval=yyvsp[-2]^yyvsp[0]; break; case 10: yyval=yyvsp[-2]+yyvsp[0]; break; case 11: yyval=yyvsp[-2]-yyvsp[0]; break; case 12: yyval=yyvsp[-2]*yyvsp[0]; break; case 13: yyval=yyvsp[-2]/yyvsp[0]; break; case 14: yyval=(yyvsp[-2]yyvsp[0]); break; case 16: yyval=(yyvsp[-2]<=yyvsp[0]); break; case 17: yyval=(yyvsp[-2]>=yyvsp[0]); break; case 18: yyval=(yyvsp[-2]==yyvsp[0]); break; case 19: yyval=(yyvsp[-2]!=yyvsp[0]); break; case 20: yyval=(yyvsp[-2]&&yyvsp[0]); break; case 21: yyval=(yyvsp[-2]||yyvsp[0]); break; case 22: yyval=yyvsp[-1]; break; } yyvsp -= yylen; yyssp -= yylen; *++yyvsp = yyval; yyn = yyr1[yyn]; yystate = yypgoto[yyn - 25 ] + *yyssp; if (yystate >= 0 && yystate <= 107 && yycheck[yystate] == *yyssp) yystate = yytable[yystate]; else yystate = yydefgoto[yyn - 25 ]; goto yynewstate; yyerrlab: if (!yyerrstatus) { ++yynerrs; error("Error parsing expression",1); } if (yyerrstatus == 3) { if (yychar == 0 ) return(1) ; yychar = -2 ; } yyerrstatus = 3; goto yyerrhandle; yyerrdefault: yyerrpop: if (yyssp == yyss) return 1; yyvsp--; yystate = *--yyssp; yyerrhandle: yyn = yypact[yystate]; if (yyn == -32768 ) goto yyerrdefault; yyn+=1; if (yyn < 0 || yyn > 107 || yycheck[yyn] != 1 ) goto yyerrdefault; yyn = yytable[yyn]; if (yyn < 0) { if (yyn == -32768 ) goto yyerrpop; yyn = -yyn; goto yyreduce; } else if (yyn == 0) goto yyerrpop; if (yyn == 46 ) return(0) ; *++yyvsp = yylval; yystate = yyn; goto yynewstate; } /*=========================================================================*/