1 #! /usr/bin/perl -w 2 3 # Copyright (C) 2006, 2008-2012 Free Software Foundation, Inc. 4 # 5 # This file is part of Bison, the GNU Compiler Compiler. 6 # 7 # This program is free software: you can redistribute it and/or modify 8 # it under the terms of the GNU General Public License as published by 9 # the Free Software Foundation, either version 3 of the License, or 10 # (at your option) any later version. 11 # 12 # This program is distributed in the hope that it will be useful, 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 # GNU General Public License for more details. 16 # 17 # You should have received a copy of the GNU General Public License 18 # along with this program. If not, see <http://www.gnu.org/licenses/>. 19 20 use IO::File; 21 use Benchmark qw (:all); 22 23 my $bison = $ENV{'BISON'} || '@abs_top_builddir@/tests/bison'; 24 my $cc = $ENV{'CC'} || 'gcc'; 25 26 ################################################################## 27 28 sub triangular_grammar ($$$) 29 { 30 my ($base, $max, $directives) = @_; 31 32 my $out = new IO::File ">$base.y" 33 or die; 34 print $out <<EOF; 35 %error-verbose 36 %debug 37 %{ 38 #include <stdio.h> 39 #include <stdlib.h> 40 41 static int yylex (void); 42 static void yyerror (const char *msg); 43 %} 44 %union 45 { 46 int val; 47 }; 48 49 %token END "end" 50 %type <val> exp input 51 EOF 52 53 for my $size (1 .. $max) 54 { 55 print $out "%token t$size $size \"$size\"\n"; 56 }; 57 58 print $out <<EOF; 59 %% 60 input: 61 exp { if (\$1 != 0) abort (); \$\$ = \$1; } 62 | input exp { if (\$2 != \$1 + 1) abort (); \$\$ = \$2; } 63 ; 64 65 exp: 66 END 67 { \$\$ = 0; } 68 EOF 69 70 for my $size (1 .. $max) 71 { 72 use Text::Wrap; 73 print $out wrap ("| ", " ", 74 (map { "\"$_\"" } (1 .. $size)), 75 " END \n"), 76 " { \$\$ = $size; }\n"; 77 }; 78 print $out ";\n"; 79 80 print $out <<EOF; 81 %% 82 static int 83 yylex (void) 84 { 85 static int inner = 1; 86 static int outer = 0; 87 if (outer > $max) 88 return 0; 89 else if (inner > outer) 90 { 91 inner = 1; 92 ++outer; 93 return END; 94 } 95 return inner++; 96 } 97 98 static void 99 yyerror (const char *msg) 100 { 101 fprintf (stderr, "%s\\n", msg); 102 } 103 104 int 105 main (void) 106 { 107 yydebug = !!getenv ("YYDEBUG"); 108 return yyparse (); 109 } 110 EOF 111 } 112 113 ################################################################## 114 115 sub calc_input ($$) 116 { 117 my ($base, $max) = @_; 118 my $out = new IO::File ">$base.input" 119 or die; 120 foreach (1 .. $max) 121 { 122 print $out "0+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51+52+53+54+55+56+57+58+59+60+61+62+63+64+65+66+67+68+69+70+71+72+73+74+75+76+77+78+79+80+81+82+83+84+85+86+87+88+89+90+91+92+93+94+95+96+97+98+99\n"; 123 print $out "1+1*(2+2*(3+3*(4+4*(5+5*(6+6*(7+7*(8+8*(9+9*(10+10*(11+11*(12+12*(13+13*(14+14*(15+15*(16+16*(17+17*(18+18*(19+19*(20+20*(21+21*(22+22*(23+23*(24+24*(25+25*(26+26*(27+27*(28+28*(29+29*(30+30*(31+31*(32+32*(33+33*(34+34*(35+35*(36+36*(37+37*(38+38*(39+39*(40+40*(41+41*(42+42*(43+43*(44+44*(45+45*(46+46*(47+47*(48+48*(49+49*(50+50*(51+51*(52+52*(53+53*(54+54*(55+55*(56+56*(57+57*(58+58*(59+59*(60+60*(61+61*(62+62*(63+63*(64+64*(65+65*(66+66*(67+67*(68+68*(69+69*(70+70*(71+71*(72+72*(73+73*(74+74*(75+75*(76+76*(77+77*(78+78*(79+79*(80+80*(81+81*(82+82*(83+83*(84+84*(85+85*(86+86*(87+87*(88+88*(89+89*(90+90*(91+91*(92+92*(93+93*(94+94*(95+95*(96+96*(97+97*(98+98*(99+99*(100+100*(101+101*(102+102*(103+103*(104+104*(105+105*(106+106*(107+107*(108+108*(109+109*(110+110*(111+111*(112+112*(113+113*(114+114*(115+115*(116+116*(117+117*(118+118*(119+119*(120+120*(121+121*(122+122*(123+123*(124+124*(125+125*(126+126*(127+127*(128+128*(129+129*(130+130*(131+131*(132+132*(133+133*(134+134*(135+135*(136+136*(137+137*(138+138*(139+139*(140+140*(141+141*(142+142*(143+143*(144+144*(145+145*(146+146*(147+147*(148+148*(149+149*(150+150*(151+151*(152+152*(153+153*(154+154*(155+155*(156+156*(157+157*(158+158*(159+159*(160+160*(161+161*(162+162*(163+163*(164+164*(165+165*(166+166*(167+167*(168+168*(169+169*(170+170*(171+171*(172+172*(173+173*(174+174*(175+175*(176+176*(177+177*(178+178*(179+179*(180+180*(181+181*(182+182*(183+183*(184+184*(185+185*(186+186*(187+187*(188+188*(189+189*(190+190*(191+191*(192+192*(193+193*(194+194*(195+195*(196+196*(197+197*(198+198*(199+199*(200+200*(201+201*(202+202*(203+203*(204+204*(205+205*(206+206*(207+207*(208+208*(209+209*(210+210*(211+211*(212+212*(213+213*(214+214*(215+215*(216+216*(217+217*(218+218*(219+219*(220+220*(221+221*(222+222*(223+223*(224+224*(225+225*(226+226*(227+227*(228+228*(229+229*(230+230*(231+231*(232+232*(233+233*(234+234*(235+235*(236+236*(237+237*(238+238*(239+239*(240+240*(241+241*(242+242*(243+243*(244+244*(245+245*(246+246*(247+247*(248+248*(249+249*(250+250*(251+251*(252+252*(253+253*(254+254*(255+255*(256+256*(257+257*(258+258*(259+259*(260+260*(261+261*(262+262*(263+263*(264+264*(265+265*(266+266*(267+267*(268+268*(269+269*(270+270*(271+271*(272+272*(273+273*(274+274*(275+275*(276+276*(277+277*(278+278*(279+279*(280+280*(281+281*(282+282*(283+283*(284+284*(285+285*(286+286*(287+287*(288+288*(289+289*(290+290*(291+291*(292+292*(293+293*(294+294*(295+295*(296+296*(297+297*(298+298*(299+299*(300+300*(301+301*(302+302*(303+303*(304+304*(305+305*(306+306*(307+307*(308+308*(309+309*(310+310*(311+311*(312+312*(313+313*(314+314*(315+315*(316+316*(317+317*(318+318*(319+319*(320+320*(321+321*(322+322*(323+323*(324+324*(325+325*(326+326*(327+327*(328+328*(329+329*(330+330*(331+331*(332+332*(333+333*(334+334*(335+335*(336+336*(337+337*(338+338*(339+339*(340+340*(341+341*(342+342*(343+343*(344+344*(345+345*(346+346*(347+347*(348+348*(349+349*(350+350*(351+351*(352+352*(353+353*(354+354*(355+355*(356+356*(357+357*(358+358*(359+359*(360+360*(361+361*(362+362*(363+363*(364+364*(365+365*(366+366*(367+367*(368+368*(369+369*(370+370*(371+371*(372+372*(373+373*(374+374*(375+375*(376+376*(377+377*(378+378*(379+379*(380+380*(381+381*(382+382*(383+383*(384+384*(385+385*(386+386*(387+387*(388+388*(389+389*(390+390*(391+391*(392+392*(393+393*(394+394*(395+395*(396+396*(397+397*(398+398*(399+399*(400+400*(401+401*(402+402*(403+403*(404+404*(405+405*(406+406*(407+407*(408+408*(409+409*(410+410*(411+411*(412+412*(413+413*(414+414*(415+415*(416+416*(417+417*(418+418*(419+419*(420+420*(421+421*(422+422*(423+423*(424+424*(425+425*(426+426*(427+427*(428+428*(429+429*(430+430*(431+431*(432+432*(433+433*(434+434*(435+435*(436+436*(437+437*(438+438*(439+439*(440+440*(441+441*(442+442*(443+443*(444+444*(445+445*(446+446*(447+447*(448+448*(449+449*(450+450*(451+451*(452+452*(453+453*(454+454*(455+455*(456+456*(457+457*(458+458*(459+459*(460+460*(461+461*(462+462*(463+463*(464+464*(465+465*(466+466*(467+467*(468+468*(469+469*(470+470*(471+471*(472+472*(473+473*(474+474*(475+475*(476+476*(477+477*(478+478*(479+479*(480+480*(481+481*(482+482*(483+483*(484+484*(485+485*(486+486*(487+487*(488+488*(489+489*(490+490*(491+491*(492+492*(493+493*(494+494*(495+495*(496+496*(497+497*(498+498*(499+499*(500+500*(501+501*(502+502*(503+503*(504+504*(505+505*(506+506*(507+507*(508+508*(509+509*(510+510*(511+511*(512+512*(513+513*(514+514*(515+515*(516+516*(517+517*(518+518*(519+519*(520+520*(521+521*(522+522*(523+523*(524+524*(525+525*(526+526*(527+527*(528+528*(529+529*(530+530*(531+531*(532+532*(533+533*(534+534*(535+535*(536+536*(537+537*(538+538*(539+539*(540+540*(541+541*(542+542*(543+543*(544+544*(545+545*(546+546*(547+547*(548+548*(549+549*(550+550*(551+551*(552+552*(553+553*(554+554*(555+555*(556+556*(557+557*(558+558*(559+559*(560+560*(561+561*(562+562*(563+563*(564+564*(565+565*(566+566*(567+567*(568+568*(569+569*(570+570*(571+571*(572+572*(573+573*(574+574*(575+575*(576+576*(577+577*(578+578*(579+579*(580+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124 } 125 } 126 127 ################################################################## 128 129 sub calc_grammar ($$$) 130 { 131 my ($base, $max, $directives) = @_; 132 133 my $out = new IO::File ">$base.y" 134 or die; 135 print $out <<EOF; 136 %{ 137 #include <assert.h> 138 #include <stdio.h> 139 #include <stdlib.h> 140 #include <string.h> 141 #include <ctype.h> 142 #define USE(Var) 143 144 /* Exercise pre-prologue dependency to %union. */ 145 typedef int semantic_value; 146 147 static semantic_value global_result = 0; 148 static int global_count = 0; 149 %} 150 151 /* Exercise %union. */ 152 $directives 153 %error-verbose 154 %union 155 { 156 semantic_value ival; 157 }; 158 159 %{ 160 static int power (int base, int exponent); 161 /* yyerror receives the location if: 162 - %location & %pure & %glr 163 - %location & %pure & %yacc & %parse-param. */ 164 static void yyerror (const char *s); 165 #if YYPURE 166 static int yylex (YYSTYPE* yylvalp); 167 #else 168 static int yylex (void); 169 #endif 170 %} 171 172 /* Bison Declarations */ 173 %token CALC_EOF 0 "end of input" 174 %token <ival> NUM "number" 175 %type <ival> exp 176 177 %nonassoc '=' /* comparison */ 178 %left '-' '+' 179 %left '*' '/' 180 %left NEG /* negation--unary minus */ 181 %right '^' /* exponentiation */ 182 183 /* Grammar follows */ 184 %% 185 input: 186 line 187 | input line 188 ; 189 190 line: 191 '\\n' 192 | exp '\\n' { USE (\$1); } 193 ; 194 195 exp: 196 NUM { \$\$ = \$1; } 197 | exp '=' exp 198 { 199 if (\$1 != \$3) 200 fprintf (stderr, "calc: error: %d != %d\\n", \$1, \$3); 201 \$\$ = \$1; 202 } 203 | exp '+' exp { \$\$ = \$1 + \$3; } 204 | exp '-' exp { \$\$ = \$1 - \$3; } 205 | exp '*' exp { \$\$ = \$1 * \$3; } 206 | exp '/' exp { \$\$ = \$1 / \$3; } 207 | '-' exp %prec NEG { \$\$ = -\$2; } 208 | exp '^' exp { \$\$ = power (\$1, \$3); } 209 | '(' exp ')' { \$\$ = \$2; } 210 | '(' error ')' { \$\$ = 1111; } 211 | '!' { \$\$ = 0; YYERROR; } 212 | '-' error { \$\$ = 0; YYERROR; } 213 ; 214 %% 215 /* The input. */ 216 static FILE *input; 217 218 static void 219 yyerror (const char *s) 220 { 221 fprintf (stderr, "%s\\n", s); 222 } 223 224 static int 225 get_char (void) 226 { 227 return getc (input); 228 } 229 230 231 static void 232 unget_char ( int c) 233 { 234 ungetc (c, input); 235 } 236 237 static int 238 read_signed_integer (void) 239 { 240 int c = get_char (); 241 int sign = 1; 242 int n = 0; 243 244 if (c == '-') 245 { 246 c = get_char (); 247 sign = -1; 248 } 249 250 while (isdigit (c)) 251 { 252 n = 10 * n + (c - '0'); 253 c = get_char (); 254 } 255 256 unget_char (c); 257 258 return sign * n; 259 } 260 261 static int 262 #if YYPURE 263 # define yylval (*yylvalp) 264 yylex (YYSTYPE* yylvalp) 265 #else 266 yylex (void) 267 #endif 268 { 269 int c; 270 271 /* Skip white space. */ 272 while ((c = get_char ()) == ' ' || c == '\t') 273 continue; 274 275 /* process numbers */ 276 if (c == '.' || isdigit (c)) 277 { 278 unget_char ( c); 279 yylval.ival = read_signed_integer (); 280 return NUM; 281 } 282 283 /* Return end-of-file. */ 284 if (c == EOF) 285 return CALC_EOF; 286 287 /* Return single chars. */ 288 return c; 289 } 290 291 static int 292 power (int base, int exponent) 293 { 294 assert (0 <= exponent); 295 int res = 1; 296 for (/* Niente */; exponent; --exponent) 297 res *= base; 298 return res; 299 } 300 301 302 int 303 main (int argc, const char **argv) 304 { 305 semantic_value result = 0; 306 int count = 0; 307 int status; 308 309 input = fopen ("calc.input", "r"); 310 if (!input) 311 { 312 perror ("calc.input"); 313 return 3; 314 } 315 316 status = yyparse (); 317 if (global_result != result) 318 abort (); 319 if (global_count != count) 320 abort (); 321 322 return status; 323 } 324 EOF 325 } 326 327 ################################################################## 328 329 sub compile ($) 330 { 331 my ($base) = @_; 332 system ("$bison $base.y -o $base.c") == 0 333 or die; 334 system ("$cc -o $base $base.c") == 0 335 or die; 336 } 337 338 sub bench_grammar ($) 339 { 340 my ($gram) = @_; 341 my %test = 342 ( 343 "pull-impure" => '', 344 "pull-pure" => '%define api.pure', 345 "push-impure" => '%define api.push-pull "both"', 346 "push-pure" => '%define api.push-pull "both" %define api.pure', 347 ); 348 349 my %bench; 350 while (my ($name, $directives) = each %test) 351 { 352 print STDERR "$name\n"; 353 my $generator = "$gram" . "_grammar"; 354 &$generator ($name, 200, $directives); 355 compile ($name); 356 $bench{$name} = "system ('./$name');"; 357 } 358 359 print "$gram:\n"; 360 my $res = timethese (50, \%bench, 'nop'); 361 cmpthese ($res, 'nop'); 362 } 363 364 print STDERR "Using $bison, $cc.\n"; 365 calc_input ('calc', 200); 366 bench_grammar ('calc'); 367 368 ### Setup "GNU" style for perl-mode and cperl-mode. 369 ## Local Variables: 370 ## perl-indent-level: 2 371 ## perl-continued-statement-offset: 2 372 ## perl-continued-brace-offset: 0 373 ## perl-brace-offset: 0 374 ## perl-brace-imaginary-offset: 0 375 ## perl-label-offset: -2 376 ## cperl-indent-level: 2 377 ## cperl-brace-offset: 0 378 ## cperl-continued-brace-offset: 0 379 ## cperl-label-offset: -2 380 ## cperl-extra-newline-before-brace: t 381 ## cperl-merge-trailing-else: nil 382 ## cperl-continued-statement-offset: 2 383 ## End: 384
