projects / bison.git / blame
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|---|---|---|
| 3cedc2dc AD |
1 | #! /usr/bin/perl -w |
| 2 | ||
| 9ca7f077 | 3 | # Copyright (C) 2006, 2008 Free Software Foundation, Inc. |
| f16b0819 | 4 | # |
| 3cedc2dc | 5 | # This file is part of Bison, the GNU Compiler Compiler. |
| f16b0819 PE |
6 | # |
| 7 | # This program is free software: you can redistribute it and/or modify | |
| 3cedc2dc | 8 | # it under the terms of the GNU General Public License as published by |
| f16b0819 PE |
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, | |
| 3cedc2dc AD |
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. | |
| f16b0819 | 16 | # |
| 3cedc2dc | 17 | # You should have received a copy of the GNU General Public License |
| f16b0819 PE |
18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | ||
| 15129f25 AD |
20 | =head1 NAME |
| 21 | ||
| 22 | bench.pl - perform benches on Bison parsers. | |
| 23 | ||
| 24 | =head1 SYNOPSIS | |
| 25 | ||
| 26 | ./bench.pl | |
| 27 | ||
| 7e5f9c54 AD |
28 | =head1 OPTIONS |
| 29 | ||
| e1b74b92 AD |
30 | =over 4 |
| 31 | ||
| a6df593d AD |
32 | =item B<-b>, B<--bench>=I<bench-name> |
| 33 | ||
| 34 | Specify the set of benches to run. I<bench-name> should be one of: | |
| 35 | ||
| 36 | =over 4 | |
| 37 | ||
| 38 | =item I<fusion> | |
| 39 | ||
| 40 | Test F<lalr1.cc> with three stacks against F<lalr1-fusion.cc> which | |
| 41 | uses a single one. | |
| 42 | ||
| 43 | =item I<push> | |
| 44 | ||
| 45 | Test the push parser vs. the pull interface. Use the C parser. | |
| 46 | ||
| 47 | =item I<variant> | |
| 48 | ||
| 49 | Test the use of variants instead of union in the C++ parser. | |
| 50 | ||
| 51 | =back | |
| 52 | ||
| 7e5f9c54 AD |
53 | =item B<-c>, B<--cflags>=I<flags> |
| 54 | ||
| ef05c4d6 AD |
55 | Flags to pass to the C or C++ compiler. Defaults to -O2. |
| 56 | ||
| 57 | =item B<-h>, B<--help> | |
| 58 | ||
| 59 | Display this message and exit succesfully. The more verbose, the more | |
| 60 | details. | |
| 7e5f9c54 AD |
61 | |
| 62 | =item B<-i>, B<--iterations>=I<integer> | |
| 63 | ||
| d11ee647 AD |
64 | Say how many times a single test of the bench must be run. If |
| 65 | negative, specify the minimum number of CPU seconds to run. Defaults | |
| ef05c4d6 AD |
66 | to -1. |
| 67 | ||
| 68 | =item B<-q>, B<--quiet> | |
| 69 | ||
| 70 | Decrease the verbosity level (defaults to 1). | |
| 7e5f9c54 AD |
71 | |
| 72 | =item B<-v>, B<--verbose> | |
| 73 | ||
| ef05c4d6 | 74 | Raise the verbosity level (defaults to 1). |
| 7e5f9c54 | 75 | |
| e1b74b92 AD |
76 | =back |
| 77 | ||
| 15129f25 AD |
78 | =cut |
| 79 | ||
| 3cedc2dc | 80 | use IO::File; |
| 3cedc2dc | 81 | |
| e1b74b92 AD |
82 | ################################################################## |
| 83 | ||
| 84 | =head1 VARIABLES | |
| 85 | ||
| 86 | =over 4 | |
| 87 | ||
| 88 | =item C<$bison> | |
| 89 | ||
| 90 | The Bison program to use to compile the grammar. | |
| 91 | ||
| 92 | =item C<$cc> | |
| 93 | ||
| 94 | The C compiler. | |
| 95 | ||
| 96 | =item C<$cxx> | |
| 97 | ||
| 98 | The C++ compiler. | |
| 99 | ||
| 100 | =item C<$cflags> | |
| 101 | ||
| 102 | Compiler flags (C or C++). | |
| 103 | ||
| 104 | =item C<$iterations> | |
| 105 | ||
| 106 | The number of times the parser is run for a bench. | |
| 107 | ||
| 108 | =item C<$verbose> | |
| 109 | ||
| 110 | Verbosity level. | |
| 111 | ||
| 112 | =back | |
| 113 | ||
| 114 | =cut | |
| 115 | ||
| 2e7944cb | 116 | my $bison = $ENV{'BISON'} || '@abs_top_builddir@/tests/bison'; |
| 3cedc2dc | 117 | my $cc = $ENV{'CC'} || 'gcc'; |
| 7109a18d | 118 | my $cxx = $ENV{'CXX'} || 'g++'; |
| ef05c4d6 AD |
119 | my $cflags = '-O2'; |
| 120 | my $iterations = -1; | |
| 121 | my $verbose = 1; | |
| 3cedc2dc | 122 | |
| e1b74b92 | 123 | =head1 FUNCTIONS |
| 3cedc2dc | 124 | |
| e1b74b92 | 125 | =over 4 |
| 7e5f9c54 | 126 | |
| e1b74b92 | 127 | =item C<verbose($level, $message)> |
| 15129f25 | 128 | |
| e1b74b92 AD |
129 | Report the C<$message> is C<$level> E<lt>= C<$verbose>. |
| 130 | ||
| 131 | =cut | |
| 132 | ||
| 133 | sub verbose($$) | |
| 134 | { | |
| 135 | my ($level, $message) = @_; | |
| 136 | print STDERR $message | |
| 137 | if $level <= $verbose; | |
| 138 | } | |
| 15129f25 | 139 | |
| 922730fe AD |
140 | =item C<directives($bench, @directive)> |
| 141 | ||
| 142 | Format the list of directives for Bison for bench named C<$bench>. | |
| 143 | ||
| 7109a18d AD |
144 | The special fake C<%variant> directive requests the use of |
| 145 | Boost.Variants instead of a regular union. So don't pass it, it is | |
| 146 | not a valid directive. | |
| 147 | ||
| 922730fe AD |
148 | =cut |
| 149 | ||
| 150 | sub directives($@) | |
| 151 | { | |
| 5b421a4e | 152 | my ($bench, @directive) = @_; |
| 922730fe | 153 | my $res = "/* Directives for bench `$bench'. */\n"; |
| 5b421a4e | 154 | for my $d (@directive) |
| 7109a18d AD |
155 | { |
| 156 | $res .= $d . "\n" | |
| 157 | unless $d eq '%variant'; | |
| 158 | } | |
| 922730fe AD |
159 | $res .= "/* End of directives for bench `$bench'. */\n"; |
| 160 | return $res; | |
| 161 | } | |
| 162 | ||
| 5b421a4e | 163 | =item C<triangular_grammar ($base, $max, @directive)> |
| 15129f25 AD |
164 | |
| 165 | Create a large triangular grammar which looks like : | |
| 166 | ||
| 167 | input: | |
| 168 | exp { if ($1 != 0) abort (); $$ = $1; } | |
| 169 | | input exp { if ($2 != $1 + 1) abort (); $$ = $2; } | |
| 170 | ; | |
| 171 | ||
| 172 | exp: | |
| 173 | END { $$ = 0; } | |
| 174 | | "1" END { $$ = 1; } | |
| 175 | | "1" "2" END { $$ = 2; } | |
| 176 | | "1" "2" "3" END { $$ = 3; } | |
| 177 | | "1" "2" "3" "4" END { $$ = 4; } | |
| 178 | | "1" "2" "3" "4" "5" END { $$ = 5; } | |
| 179 | ; | |
| 180 | ||
| 7e5f9c54 | 181 | C<$base> is the base name for the file to create (F<$base.y>). |
| 15129f25 | 182 | C<$max> is the number of such rules (here, 5). You may pass |
| 5b421a4e | 183 | additional Bison C<@directive>. |
| 15129f25 AD |
184 | |
| 185 | The created parser is self contained: it includes its scanner, and | |
| 186 | source of input. | |
| 187 | =cut | |
| 188 | ||
| 3cedc2dc AD |
189 | sub triangular_grammar ($$$) |
| 190 | { | |
| 5b421a4e AD |
191 | my ($base, $max, @directive) = @_; |
| 192 | my $directives = directives ($base, @directive); | |
| 3cedc2dc AD |
193 | |
| 194 | my $out = new IO::File ">$base.y" | |
| 195 | or die; | |
| 196 | print $out <<EOF; | |
| 197 | %error-verbose | |
| 198 | %debug | |
| 199 | %{ | |
| 200 | #include <stdio.h> | |
| 201 | #include <stdlib.h> | |
| 202 | ||
| 203 | static int yylex (void); | |
| 204 | static void yyerror (const char *msg); | |
| 205 | %} | |
| 922730fe | 206 | $directives |
| 3cedc2dc AD |
207 | %union |
| 208 | { | |
| 209 | int val; | |
| 210 | }; | |
| 211 | ||
| 212 | %token END "end" | |
| 213 | %type <val> exp input | |
| 214 | EOF | |
| 215 | ||
| 216 | for my $size (1 .. $max) | |
| 217 | { | |
| 218 | print $out "%token t$size $size \"$size\"\n"; | |
| 219 | }; | |
| 220 | ||
| 221 | print $out <<EOF; | |
| 222 | %% | |
| 223 | input: | |
| 224 | exp { if (\$1 != 0) abort (); \$\$ = \$1; } | |
| 225 | | input exp { if (\$2 != \$1 + 1) abort (); \$\$ = \$2; } | |
| 226 | ; | |
| 227 | ||
| 228 | exp: | |
| 229 | END | |
| 230 | { \$\$ = 0; } | |
| 231 | EOF | |
| 232 | ||
| 233 | for my $size (1 .. $max) | |
| 234 | { | |
| 235 | use Text::Wrap; | |
| 236 | print $out wrap ("| ", " ", | |
| 237 | (map { "\"$_\"" } (1 .. $size)), | |
| 238 | " END \n"), | |
| 239 | " { \$\$ = $size; }\n"; | |
| 240 | }; | |
| 241 | print $out ";\n"; | |
| 242 | ||
| 243 | print $out <<EOF; | |
| 244 | %% | |
| 245 | static int | |
| 246 | yylex (void) | |
| 247 | { | |
| 248 | static int inner = 1; | |
| 249 | static int outer = 0; | |
| 250 | if (outer > $max) | |
| 251 | return 0; | |
| 252 | else if (inner > outer) | |
| 253 | { | |
| 254 | inner = 1; | |
| 255 | ++outer; | |
| 256 | return END; | |
| 257 | } | |
| 258 | return inner++; | |
| 259 | } | |
| 260 | ||
| 261 | static void | |
| 262 | yyerror (const char *msg) | |
| 263 | { | |
| 264 | fprintf (stderr, "%s\\n", msg); | |
| 265 | } | |
| 266 | ||
| 267 | int | |
| 268 | main (void) | |
| 269 | { | |
| 270 | yydebug = !!getenv ("YYDEBUG"); | |
| 271 | return yyparse (); | |
| 272 | } | |
| 273 | EOF | |
| 274 | } | |
| 275 | ||
| 276 | ################################################################## | |
| 277 | ||
| 15129f25 AD |
278 | =item C<calc_input ($base, $max)> |
| 279 | ||
| 7e5f9c54 | 280 | Generate the input file F<$base.input> for the calc parser. The input |
| 15129f25 AD |
281 | is composed of two expressions. The first one is using left recursion |
| 282 | only and consumes no stack. The second one requires a deep stack. | |
| 283 | These two expressions are repeated C<$max> times in the output file. | |
| 284 | ||
| 285 | =cut | |
| 286 | ||
| 3cedc2dc AD |
287 | sub calc_input ($$) |
| 288 | { | |
| 289 | my ($base, $max) = @_; | |
| 290 | my $out = new IO::File ">$base.input" | |
| 291 | or die; | |
| 292 | foreach (1 .. $max) | |
| 293 | { | |
| 294 | 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"; | |
| 295 | 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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| |
| 296 | } | |
| 297 | } | |
| 298 | ||
| 299 | ################################################################## | |
| 5b421a4e | 300 | =item C<calc_grammar ($base, $max, @directive)> |
| 15129f25 | 301 | |
| 7e5f9c54 | 302 | Generate a Bison file F<$base.y> for a calculator parser in C. Pass |
| 5b421a4e | 303 | the additional Bison C<@directive>. C<$max> is ignored, but left to |
| 7109a18d | 304 | have the same interface as C<triangular_grammar>. |
| 15129f25 AD |
305 | |
| 306 | =cut | |
| 3cedc2dc AD |
307 | |
| 308 | sub calc_grammar ($$$) | |
| 309 | { | |
| 5b421a4e AD |
310 | my ($base, $max, @directive) = @_; |
| 311 | my $directives = directives ($base, @directive); | |
| 3cedc2dc AD |
312 | |
| 313 | my $out = new IO::File ">$base.y" | |
| 314 | or die; | |
| 315 | print $out <<EOF; | |
| 316 | %{ | |
| 317 | #include <stdio.h> | |
| 318 | ||
| 319 | #include <stdlib.h> | |
| 320 | #include <string.h> | |
| 321 | #include <ctype.h> | |
| 322 | #define USE(Var) | |
| 323 | ||
| 324 | /* Exercise pre-prologue dependency to %union. */ | |
| 325 | typedef int semantic_value; | |
| 326 | ||
| 327 | static semantic_value global_result = 0; | |
| 328 | static int global_count = 0; | |
| 329 | %} | |
| 330 | ||
| 3cedc2dc AD |
331 | $directives |
| 332 | %error-verbose | |
| 922730fe | 333 | /* Exercise %union. */ |
| 3cedc2dc AD |
334 | %union |
| 335 | { | |
| 336 | semantic_value ival; | |
| 337 | }; | |
| 338 | ||
| 339 | %{ | |
| 340 | static int power (int base, int exponent); | |
| 341 | /* yyerror receives the location if: | |
| 342 | - %location & %pure & %glr | |
| 343 | - %location & %pure & %yacc & %parse-param. */ | |
| 344 | static void yyerror (const char *s); | |
| 345 | #if YYPURE | |
| 346 | static int yylex (YYSTYPE* yylvalp); | |
| 347 | #else | |
| 348 | static int yylex (void); | |
| 349 | #endif | |
| 350 | %} | |
| 351 | ||
| 352 | /* Bison Declarations */ | |
| 353 | %token CALC_EOF 0 "end of input" | |
| 354 | %token <ival> NUM "number" | |
| 355 | %type <ival> exp | |
| 356 | ||
| 357 | %nonassoc '=' /* comparison */ | |
| 358 | %left '-' '+' | |
| 359 | %left '*' '/' | |
| 360 | %left NEG /* negation--unary minus */ | |
| 361 | %right '^' /* exponentiation */ | |
| 362 | ||
| 363 | /* Grammar follows */ | |
| 364 | %% | |
| 365 | input: | |
| 366 | line | |
| 367 | | input line | |
| 368 | ; | |
| 369 | ||
| 370 | line: | |
| 371 | '\\n' | |
| 372 | | exp '\\n' { USE (\$1); } | |
| 373 | ; | |
| 374 | ||
| 375 | exp: | |
| 376 | NUM { \$\$ = \$1; } | |
| 377 | | exp '=' exp | |
| 378 | { | |
| 379 | if (\$1 != \$3) | |
| 380 | fprintf (stderr, "calc: error: %d != %d\\n", \$1, \$3); | |
| 381 | \$\$ = \$1; | |
| 382 | } | |
| 383 | | exp '+' exp { \$\$ = \$1 + \$3; } | |
| 384 | | exp '-' exp { \$\$ = \$1 - \$3; } | |
| 385 | | exp '*' exp { \$\$ = \$1 * \$3; } | |
| 386 | | exp '/' exp { \$\$ = \$1 / \$3; } | |
| 387 | | '-' exp %prec NEG { \$\$ = -\$2; } | |
| 388 | | exp '^' exp { \$\$ = power (\$1, \$3); } | |
| 389 | | '(' exp ')' { \$\$ = \$2; } | |
| 390 | | '(' error ')' { \$\$ = 1111; } | |
| 391 | | '!' { \$\$ = 0; YYERROR; } | |
| 392 | | '-' error { \$\$ = 0; YYERROR; } | |
| 393 | ; | |
| 394 | %% | |
| 395 | /* The input. */ | |
| 396 | static FILE *input; | |
| 397 | ||
| 398 | static void | |
| 399 | yyerror (const char *s) | |
| 400 | { | |
| 401 | fprintf (stderr, "%s\\n", s); | |
| 402 | } | |
| 403 | ||
| 404 | static int | |
| 405 | get_char (void) | |
| 406 | { | |
| 407 | return getc (input); | |
| 408 | } | |
| 409 | ||
| 410 | ||
| 411 | static void | |
| 412 | unget_char ( int c) | |
| 413 | { | |
| 414 | ungetc (c, input); | |
| 415 | } | |
| 416 | ||
| 417 | static int | |
| 418 | read_signed_integer (void) | |
| 419 | { | |
| 420 | int c = get_char (); | |
| 421 | int sign = 1; | |
| 422 | int n = 0; | |
| 423 | ||
| 424 | if (c == '-') | |
| 425 | { | |
| 426 | c = get_char (); | |
| 427 | sign = -1; | |
| 428 | } | |
| 429 | ||
| 430 | while (isdigit (c)) | |
| 431 | { | |
| 432 | n = 10 * n + (c - '0'); | |
| 433 | c = get_char (); | |
| 434 | } | |
| 435 | ||
| 436 | unget_char (c); | |
| 437 | ||
| 438 | return sign * n; | |
| 439 | } | |
| 440 | ||
| 3cedc2dc AD |
441 | static int |
| 442 | #if YYPURE | |
| 443 | # define yylval (*yylvalp) | |
| 444 | yylex (YYSTYPE* yylvalp) | |
| 445 | #else | |
| 446 | yylex (void) | |
| 447 | #endif | |
| 448 | { | |
| 449 | int c; | |
| 450 | ||
| 451 | /* Skip white space. */ | |
| 452 | while ((c = get_char ()) == ' ' || c == '\t') | |
| 0925d5bf | 453 | continue; |
| 3cedc2dc AD |
454 | |
| 455 | /* process numbers */ | |
| 456 | if (c == '.' || isdigit (c)) | |
| 457 | { | |
| 458 | unget_char ( c); | |
| 459 | yylval.ival = read_signed_integer (); | |
| 460 | return NUM; | |
| 461 | } | |
| 462 | ||
| 463 | /* Return end-of-file. */ | |
| 464 | if (c == EOF) | |
| 465 | return CALC_EOF; | |
| 466 | ||
| 467 | /* Return single chars. */ | |
| 468 | return c; | |
| 469 | } | |
| 470 | ||
| 471 | static int | |
| 472 | power (int base, int exponent) | |
| 473 | { | |
| 474 | int res = 1; | |
| 475 | if (exponent < 0) | |
| 476 | exit (3); | |
| 477 | for (/* Niente */; exponent; --exponent) | |
| 478 | res *= base; | |
| 479 | return res; | |
| 480 | } | |
| 481 | ||
| 482 | ||
| 3cedc2dc AD |
483 | int |
| 484 | main (int argc, const char **argv) | |
| 485 | { | |
| 486 | semantic_value result = 0; | |
| 487 | int count = 0; | |
| 488 | int status; | |
| 489 | ||
| 490 | input = fopen ("calc.input", "r"); | |
| 491 | if (!input) | |
| 492 | { | |
| 493 | perror ("calc.input"); | |
| 494 | return 3; | |
| 495 | } | |
| 496 | ||
| 497 | status = yyparse (); | |
| 498 | if (global_result != result) | |
| 499 | abort (); | |
| 500 | if (global_count != count) | |
| 501 | abort (); | |
| 502 | ||
| 503 | return status; | |
| 504 | } | |
| 505 | EOF | |
| 506 | } | |
| 507 | ||
| 508 | ################################################################## | |
| 509 | ||
| 5b421a4e | 510 | =item C<variant_grammar ($base, $max, @directive)> |
| 7109a18d | 511 | |
| 7e5f9c54 | 512 | Generate a Bison file F<$base.y> that uses, or not, the Boost.Variants |
| 5b421a4e | 513 | depending on the C<@directive>. |
| 7109a18d AD |
514 | |
| 515 | =cut | |
| 516 | ||
| 517 | sub variant_grammar ($$$) | |
| 518 | { | |
| 5b421a4e AD |
519 | my ($base, $max, @directive) = @_; |
| 520 | my $directives = directives ($base, @directive); | |
| 521 | my $variant = grep { $_ eq '%variant' } @directive; | |
| 7109a18d AD |
522 | |
| 523 | my $out = new IO::File ">$base.y" | |
| 524 | or die; | |
| 525 | print $out <<EOF; | |
| 7109a18d AD |
526 | %language "C++" |
| 527 | %defines | |
| 5b421a4e | 528 | $directives |
| 7109a18d | 529 | |
| 5b421a4e | 530 | %code requires // variant.h |
| 7109a18d AD |
531 | { |
| 532 | #include <string> | |
| 533 | } | |
| 534 | ||
| 5b421a4e | 535 | %code // variant.c |
| 7109a18d AD |
536 | { |
| 537 | #include <algorithm> | |
| 538 | #include <iostream> | |
| 539 | #include <sstream> | |
| 540 | ||
| 541 | // Prototype of the yylex function providing subsequent tokens. | |
| 542 | static yy::parser::token_type yylex(yy::parser::semantic_type* yylval); | |
| 543 | ||
| 7e5f9c54 | 544 | #define STAGE_MAX ($max * 10) |
| 7109a18d AD |
545 | #define USE_VARIANTS $variant |
| 546 | #if USE_VARIANTS | |
| 547 | # define IF_VARIANTS(True, False) True | |
| 548 | #else | |
| 549 | # define IF_VARIANTS(True, False) False | |
| 550 | #endif | |
| 551 | } | |
| 552 | EOF | |
| 553 | ||
| 554 | if ($variant) | |
| 555 | { | |
| 556 | print $out <<'EOF'; | |
| 557 | %code variant {int,std::string} | |
| 558 | %token <std::string> TEXT | |
| 559 | %token <int> NUMBER | |
| 560 | %printer { std::cerr << "Number: " << $$; } <int> | |
| 561 | %printer { std::cerr << "Text: " << $$; } <std::string> | |
| 562 | %token END_OF_FILE 0 | |
| 563 | %type <std::string> text result | |
| 564 | ||
| 565 | %% | |
| 566 | result: | |
| 567 | text { /* Throw away the result. */ } | |
| 568 | ; | |
| 569 | ||
| 570 | text: | |
| 571 | /* nothing */ { /* This will generate an empty string */ } | |
| 572 | | text TEXT { std::swap($$,$1); $$.append($2); } | |
| 573 | | text NUMBER { | |
| 574 | std::swap($$,$1); | |
| 575 | std::ostringstream ss; | |
| 576 | ss << ' ' << $2; | |
| 577 | $$.append(ss.str()); | |
| 578 | } | |
| 579 | ; | |
| 580 | EOF | |
| 581 | } | |
| 582 | else | |
| 583 | { | |
| 584 | # Not using Boost variants. | |
| 585 | print $out <<'EOF'; | |
| 586 | %union {int ival; std::string* sval;} | |
| 587 | %token <sval> TEXT | |
| 588 | %token <ival> NUMBER | |
| 589 | %printer { std::cerr << "Number: " << $$; } <ival> | |
| 590 | %printer { std::cerr << "Text: " << *$$; } <sval> | |
| 591 | %token END_OF_FILE 0 | |
| 592 | %type <sval> text result | |
| 593 | ||
| 594 | %% | |
| 595 | result: | |
| 596 | text { delete $1; } | |
| 597 | ; | |
| 598 | ||
| 599 | text: | |
| 600 | /* nothing */ { $$ = new std::string; } | |
| 601 | | text TEXT { $$->append(*$2); delete $2; } | |
| 602 | | text NUMBER { | |
| 603 | std::ostringstream ss; | |
| 604 | ss << ' ' << $2; | |
| 605 | $$->append(ss.str()); | |
| 606 | } | |
| 607 | ; | |
| 608 | EOF | |
| 609 | } | |
| 610 | ||
| 611 | print $out <<'EOF'; | |
| 612 | %% | |
| 613 | static | |
| 614 | yy::parser::token_type | |
| 615 | yylex(yy::parser::semantic_type* yylval) | |
| 616 | { | |
| 617 | static int stage = -1; | |
| 618 | ++stage; | |
| 619 | if (stage == STAGE_MAX) | |
| 620 | return yy::parser::token::END_OF_FILE; | |
| 621 | else if (stage % 2) | |
| 622 | { | |
| a6df593d | 623 | IF_VARIANTS(yylval->build<int>(), yylval->ival) = stage; |
| 7109a18d AD |
624 | return yy::parser::token::NUMBER; |
| 625 | } | |
| 626 | else | |
| 627 | { | |
| a6df593d | 628 | IF_VARIANTS(yylval->build<std::string>() =, yylval->sval = new) std::string("A string."); |
| 7109a18d AD |
629 | return yy::parser::token::TEXT; |
| 630 | } | |
| 631 | abort(); | |
| 632 | } | |
| 633 | ||
| 634 | // Mandatory error function | |
| 635 | void | |
| 636 | yy::parser::error(const yy::parser::location_type& yylloc, | |
| 637 | const std::string& message) | |
| 638 | { | |
| 639 | std::cerr << yylloc << ": " << message << std::endl; | |
| 640 | } | |
| 641 | ||
| 642 | int main(int argc, char *argv[]) | |
| 643 | { | |
| 644 | yy::parser p; | |
| 5b421a4e | 645 | #if YYDEBUG |
| 7109a18d | 646 | p.set_debug_level(!!getenv("YYDEBUG")); |
| 5b421a4e | 647 | #endif |
| 7109a18d AD |
648 | p.parse(); |
| 649 | return 0; | |
| 650 | } | |
| 651 | EOF | |
| 652 | } | |
| 653 | ||
| 654 | ################################################################## | |
| 655 | ||
| 15129f25 AD |
656 | =item C<compile ($base)> |
| 657 | ||
| 7109a18d AD |
658 | Compile C<$base.y> to an executable C, Using the C or C++ compiler |
| 659 | depending on the %language specification in C<$base.y>. | |
| 15129f25 AD |
660 | |
| 661 | =cut | |
| 662 | ||
| 3cedc2dc AD |
663 | sub compile ($) |
| 664 | { | |
| 665 | my ($base) = @_; | |
| 7109a18d AD |
666 | my $language = `sed -ne '/%language "\\(.*\\)"/{s//\\1/;p;q;}' $base.y`; |
| 667 | chomp $language; | |
| 668 | ||
| 669 | my $compiler = $language eq 'C++' ? $cxx : $cc; | |
| 670 | ||
| 3cedc2dc AD |
671 | system ("$bison $base.y -o $base.c") == 0 |
| 672 | or die; | |
| 7e5f9c54 | 673 | system ("$compiler -o $base $cflags $base.c") == 0 |
| 3cedc2dc AD |
674 | or die; |
| 675 | } | |
| 676 | ||
| 7484f1d4 | 677 | =item C<bench_grammar ($gram, %bench)> |
| 15129f25 AD |
678 | |
| 679 | Generate benches for C<$gram>. C<$gram> should be C<calc> or | |
| 7484f1d4 AD |
680 | C<triangle>. C<%bench> is a hash of the form: |
| 681 | ||
| 5b421a4e | 682 | $name => @directive |
| 7484f1d4 | 683 | |
| 5b421a4e | 684 | where C<$name> is the name of the bench, and C<@directive> are the |
| 7484f1d4 AD |
685 | Bison directive to use for this bench. All the benches are compared |
| 686 | against each other, repeated 50 times. | |
| 15129f25 AD |
687 | |
| 688 | =cut | |
| 689 | ||
| 7484f1d4 | 690 | sub bench_grammar ($%) |
| 3cedc2dc | 691 | { |
| 7484f1d4 | 692 | my ($gram, %test) = @_; |
| f16b0819 | 693 | |
| d11ee647 AD |
694 | use Benchmark qw (:all :hireswallclock); |
| 695 | ||
| 7484f1d4 | 696 | # Set up the benches as expected by timethese. |
| 3cedc2dc | 697 | my %bench; |
| d11ee647 AD |
698 | # For each bench, capture the size. |
| 699 | my %size; | |
| 3cedc2dc AD |
700 | while (my ($name, $directives) = each %test) |
| 701 | { | |
| ef05c4d6 | 702 | verbose 2, "Generating $name\n"; |
| 7484f1d4 | 703 | # Call the Bison input file generator. |
| 3cedc2dc | 704 | my $generator = "$gram" . "_grammar"; |
| 922730fe | 705 | &$generator ($name, 200, @$directives); |
| 5b421a4e | 706 | # Compile the executable. |
| 3cedc2dc AD |
707 | compile ($name); |
| 708 | $bench{$name} = "system ('./$name');"; | |
| d11ee647 | 709 | chop($size{$name} = `wc -c <$name`); |
| 3cedc2dc AD |
710 | } |
| 711 | ||
| 7484f1d4 | 712 | # Run the benches. |
| d11ee647 AD |
713 | # |
| 714 | # STYLE can be any of 'all', 'none', 'noc', 'nop' or 'auto'. 'all' | |
| 715 | # shows each of the 5 times available ('wallclock' time, user time, | |
| 716 | # system time, user time of children, and system time of | |
| 717 | # children). 'noc' shows all except the two children times. 'nop' | |
| 718 | # shows only wallclock and the two children times. 'auto' (the | |
| 719 | # default) will act as 'all' unless the children times are both | |
| 720 | # zero, in which case it acts as 'noc'. 'none' prevents output. | |
| ef05c4d6 | 721 | verbose 2, "Running the benches for $gram\n"; |
| 7e5f9c54 | 722 | my $res = timethese ($iterations, \%bench, 'nop'); |
| d11ee647 AD |
723 | |
| 724 | # Output the speed result. | |
| 3cedc2dc | 725 | cmpthese ($res, 'nop'); |
| d11ee647 AD |
726 | |
| 727 | # Display the sizes. | |
| 728 | print "Sizes:\n"; | |
| 0cc5bead | 729 | my $width = 10; |
| d11ee647 AD |
730 | for my $bench (keys %size) |
| 731 | { | |
| 0cc5bead AD |
732 | $width = length $bench |
| 733 | if $width < length $bench; | |
| 734 | } | |
| 735 | for my $bench (keys %size) | |
| 736 | { | |
| 737 | printf "%${width}s: %5dkB\n", $bench, int ($size{$bench} / 1024); | |
| d11ee647 | 738 | } |
| 3cedc2dc AD |
739 | } |
| 740 | ||
| 7484f1d4 AD |
741 | |
| 742 | =item C<bench_push_parser ()> | |
| 743 | ||
| 744 | Bench the C push parser against the pull parser, pure and impure | |
| 745 | interfaces. | |
| 746 | ||
| 747 | =cut | |
| 748 | ||
| 749 | sub bench_push_parser () | |
| 750 | { | |
| 7484f1d4 AD |
751 | calc_input ('calc', 200); |
| 752 | bench_grammar | |
| 753 | ('calc', | |
| 754 | ( | |
| 922730fe AD |
755 | "pull-impure" => [], |
| 756 | "pull-pure" => ['%define api.pure'], | |
| 757 | "push-impure" => ['%define api.push_pull "both"'], | |
| 758 | "push-pure" => ['%define api.push_pull "both"', '%define api.pure'], | |
| 7484f1d4 AD |
759 | ) |
| 760 | ); | |
| 761 | } | |
| 762 | ||
| 7109a18d AD |
763 | =item C<bench_variant_parser ()> |
| 764 | ||
| 765 | Bench the C++ lalr1.cc parser using Boost.Variants or %union. | |
| 766 | ||
| 767 | =cut | |
| 768 | ||
| 769 | sub bench_variant_parser () | |
| 770 | { | |
| 771 | bench_grammar | |
| 772 | ('variant', | |
| 773 | ( | |
| a6df593d AD |
774 | "f-union" => ['%skeleton "lalr1-fusion.cc"'], |
| 775 | "f-uni-deb" => ['%skeleton "lalr1-fusion.cc"', '%debug'], | |
| 776 | "f-var" => ['%skeleton "lalr1-fusion.cc"', '%variant'], | |
| 777 | "f-var-deb" => ['%skeleton "lalr1-fusion.cc"', '%debug', '%variant'], | |
| 778 | "f-var-dtr" => ['%skeleton "lalr1-fusion.cc"', '%variant', "%code {\n#define VARIANT_DESTROY\n}"], | |
| 779 | "f-var-deb-dtr" => ['%skeleton "lalr1-fusion.cc"', '%debug', '%variant', "%code {\n#define VARIANT_DESTROY\n}"], | |
| 7109a18d AD |
780 | ) |
| 781 | ); | |
| 782 | } | |
| 783 | ||
| 429b4848 AD |
784 | =item C<bench_fusion_parser ()> |
| 785 | ||
| 786 | Bench the C++ lalr1.cc parser using Boost.Variants or %union. | |
| 787 | ||
| 788 | =cut | |
| 789 | ||
| 790 | sub bench_fusion_parser () | |
| 791 | { | |
| 792 | bench_grammar | |
| 793 | ('variant', | |
| 794 | ( | |
| 795 | "split" => [], | |
| 796 | "fused" => ['%skeleton "lalr1-fusion.cc"'], | |
| 797 | ) | |
| 798 | ); | |
| 799 | } | |
| 800 | ||
| 7109a18d AD |
801 | ############################################################################ |
| 802 | ||
| 7e5f9c54 AD |
803 | sub help ($) |
| 804 | { | |
| 805 | my ($verbose) = @_; | |
| 806 | use Pod::Usage; | |
| 807 | # See <URL:http://perldoc.perl.org/pod2man.html#NOTES>. | |
| 808 | pod2usage( { -message => "Bench Bison parsers", | |
| 809 | -exitval => 0, | |
| 810 | -verbose => $verbose, | |
| 811 | -output => \*STDOUT }); | |
| 812 | } | |
| 813 | ||
| 814 | sub getopt () | |
| 815 | { | |
| 816 | use Getopt::Long; | |
| a6df593d AD |
817 | %option = ( |
| 818 | "b|bench=s" => \$bench, | |
| 819 | "c|cflags=s" => \$cflags, | |
| 820 | "h|help" => sub { help ($verbose) }, | |
| 821 | "i|iterations=i" => \$iterations, | |
| ef05c4d6 | 822 | "q|quiet" => sub { --$verbose }, |
| a6df593d AD |
823 | "v|verbose" => sub { ++$verbose }, |
| 824 | ); | |
| 7e5f9c54 AD |
825 | Getopt::Long::Configure ("bundling", "pass_through"); |
| 826 | GetOptions (%option) | |
| 827 | or exit 1; | |
| 828 | } | |
| 829 | ||
| 830 | ###################################################################### | |
| 831 | ||
| 832 | getopt; | |
| e1b74b92 AD |
833 | verbose 1, "Using bison=$bison.\n"; |
| 834 | verbose 1, "Using cc=$cc.\n"; | |
| 835 | verbose 1, "Using cxx=$cxx.\n"; | |
| 836 | verbose 1, "Using cflags=$cflags.\n"; | |
| a6df593d AD |
837 | |
| 838 | bench_fusion_parser() if $bench eq "fusion"; | |
| 839 | bench_push_parser() if $bench eq "push"; | |
| 840 | bench_variant_parser() if $bench eq "variant"; | |
| 3cedc2dc AD |
841 | |
| 842 | ### Setup "GNU" style for perl-mode and cperl-mode. | |
| 843 | ## Local Variables: | |
| 844 | ## perl-indent-level: 2 | |
| 845 | ## perl-continued-statement-offset: 2 | |
| 846 | ## perl-continued-brace-offset: 0 | |
| 847 | ## perl-brace-offset: 0 | |
| 848 | ## perl-brace-imaginary-offset: 0 | |
| 849 | ## perl-label-offset: -2 | |
| 850 | ## cperl-indent-level: 2 | |
| 851 | ## cperl-brace-offset: 0 | |
| 852 | ## cperl-continued-brace-offset: 0 | |
| 853 | ## cperl-label-offset: -2 | |
| 854 | ## cperl-extra-newline-before-brace: t | |
| 855 | ## cperl-merge-trailing-else: nil | |
| 856 | ## cperl-continued-statement-offset: 2 | |
| 857 | ## End: |