deserves most of the credit).
* Makefile.am (SUBDIRS): Add etc subdirectory.
* configure.ac (AC_CONFIG_FILES): Add etc/bench.pl and etc/Makefile.
* data/push.c (b4_declare_parser_state_variables): Move yyn, yyresult,
yytoken, yyval, and yyloc declarations to...
(yyparse or yypush_parse): ... here to improve performance. For
yypush_parse invocations after the first, be sure to assign yyn its old
value again.
(yypstate_new): Don't bother initializing the yyresult field since the
initial value isn't used.
(yyn, yyresult, yytoken, yyval, yyloc): For each NAME in this list,
remove the #define that, in push mode, set it to yyps->NAME.
* etc/Makefile.am: New.
* etc/bench.pl: Remove and build it instead from...
* etc/bench.pl.in: ... this new file. Use @abs_top_builddir@ to invoke
"tests/bison" from the build directory by default rather than just
invoking "bison" from $PATH.
(calc_grammar): Update push parser code: don't declare yylval globally,
don't define yyparse_wrapper, and don't #define yyparse.
(bench_grammar): Update to check all working combinations of yacc.c,
push.c, impure, pure, pull, and push.
+2006-12-26 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Update etc/bench.pl. Optimize push mode a little (the yyn change
+ deserves most of the credit).
+ * Makefile.am (SUBDIRS): Add etc subdirectory.
+ * configure.ac (AC_CONFIG_FILES): Add etc/bench.pl and etc/Makefile.
+ * data/push.c (b4_declare_parser_state_variables): Move yyn, yyresult,
+ yytoken, yyval, and yyloc declarations to...
+ (yyparse or yypush_parse): ... here to improve performance. For
+ yypush_parse invocations after the first, be sure to assign yyn its old
+ value again.
+ (yypstate_new): Don't bother initializing the yyresult field since the
+ initial value isn't used.
+ (yyn, yyresult, yytoken, yyval, yyloc): For each NAME in this list,
+ remove the #define that, in push mode, set it to yyps->NAME.
+ * etc/Makefile.am: New.
+ * etc/bench.pl: Remove and build it instead from...
+ * etc/bench.pl.in: ... this new file. Use @abs_top_builddir@ to invoke
+ "tests/bison" from the build directory by default rather than just
+ invoking "bison" from $PATH.
+ (calc_grammar): Update push parser code: don't declare yylval globally,
+ don't define yyparse_wrapper, and don't #define yyparse.
+ (bench_grammar): Update to check all working combinations of yacc.c,
+ push.c, impure, pure, pull, and push.
+
2006-12-25 Joel E. Denny <jdenny@ces.clemson.edu>
For push mode, add pull wrappers around yypush_parse.
ACLOCAL_AMFLAGS = -I m4
-SUBDIRS = build-aux po runtime-po lib data src doc examples tests
+SUBDIRS = build-aux po runtime-po lib data src doc examples tests etc
# Files installed for use by Automake.
aclocaldir = @aclocaldir@
aclocaldir='${datadir}/aclocal'
AC_SUBST([aclocaldir])
+# Create the benchmark script.
+AC_CONFIG_FILES([etc/bench.pl], [chmod +x etc/bench.pl])
+
# Initialize the test suite.
AC_CONFIG_TESTDIR(tests)
AC_CONFIG_FILES([tests/Makefile tests/atlocal])
build-aux/Makefile
po/Makefile.in
data/Makefile
+ etc/Makefile
examples/Makefile
examples/calc++/Makefile
lib/Makefile src/Makefile doc/Makefile])
int yynerrs;
]])[
int yystate;
- int yyn;
- int yyresult;
/* Number of tokens to shift before error messages enabled. */
int yyerrstatus;
- /* Look-ahead token as an internal (translated) token number. */
- int yytoken;
/* Three stacks and their tools:
`yyss': related to states,
YYLTYPE yyerror_range[2];
]])[
YYSIZE_T yystacksize;
-
- /* The variables used to return semantic value and location from the
- action routines. */
- YYSTYPE yyval;
-]b4_locations_if([[ YYLTYPE yyloc;
-]])])
+]])
m4_divert_pop([KILL])dnl# ====================== End of M4 code.
]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
{
yypstate *yyps = (yypstate *) malloc (sizeof *yyps);
- yyps->yyresult = -1;
yyps->yynew = 1;
return yyps;
}
]b4_pure_if([[#define ]b4_prefix[nerrs yyps->]b4_prefix[nerrs
]])[#define yystate yyps->yystate
-#define yyn yyps->yyn
-#define yyresult yyps->yyresult
#define yyerrstatus yyps->yyerrstatus
-#define yytoken yyps->yytoken
#define yyssa yyps->yyssa
#define yyss yyps->yyss
#define yyssp yyps->yyssp
#define yylsp yyps->yylsp
#define yyerror_range yyps->yyerror_range
]])[#define yystacksize yyps->yystacksize
-#define yyval yyps->yyval
-]b4_locations_if([[#define yyloc yyps->yyloc
-]])])[
+]])[
/*-------------------------.
| yyparse or yypush_parse. |
]b4_locations_if([[YYLTYPE yypushed_loc = yylloc;
]])])],
[b4_declare_parser_state_variables])[
-
+ int yyn;
+ int yyresult;
+ /* Look-ahead token as an internal (translated) token number. */
+ int yytoken;
+ /* The variables used to return semantic value and location from the
+ action routines. */
+ YYSTYPE yyval;
+]b4_locations_if([[ YYLTYPE yyloc;
+]])[
#if YYERROR_VERBOSE
/* Buffer for error messages, and its allocated size. */
char yymsgbuf[128];
int yylen = 0;
]b4_push_if([[
if (!yyps->yynew)
- goto yyread_pushed_token;
+ {
+ yyn = yypact[yystate];
+ goto yyread_pushed_token;
+ }
]])[
yytoken = 0;
yyss = yyssa;
--- /dev/null
+## Copyright (C) 2006 Free Software Foundation, Inc.
+
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+## 02110-1301 USA
+
+nodist_noinst_SCRIPTS = bench.pl
+++ /dev/null
-#! /usr/bin/perl -w
-
-# Copyright (C) 2006 Free Software Foundation, Inc.
-#
-# This file is part of Bison, the GNU Compiler Compiler.
-#
-# Bison is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-#
-# Bison is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with autoconf; see the file COPYING. If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-# Boston, MA 02110-1301, USA.
-
-use IO::File;
-use Benchmark qw (:all);
-
-my $bison = $ENV{'BISON'} || 'bison';
-my $cc = $ENV{'CC'} || 'gcc';
-
-##################################################################
-
-sub triangular_grammar ($$$)
-{
- my ($base, $max, $directives) = @_;
-
- my $out = new IO::File ">$base.y"
- or die;
- print $out <<EOF;
-%error-verbose
-%debug
-%{
-#include <stdio.h>
-#include <stdlib.h>
-
-static int yylex (void);
-static void yyerror (const char *msg);
-%}
-%union
-{
- int val;
-};
-
-%token END "end"
-%type <val> exp input
-EOF
-
- for my $size (1 .. $max)
- {
- print $out "%token t$size $size \"$size\"\n";
- };
-
-print $out <<EOF;
-%%
-input:
- exp { if (\$1 != 0) abort (); \$\$ = \$1; }
-| input exp { if (\$2 != \$1 + 1) abort (); \$\$ = \$2; }
-;
-
-exp:
- END
- { \$\$ = 0; }
-EOF
-
-for my $size (1 .. $max)
- {
- use Text::Wrap;
- print $out wrap ("| ", " ",
- (map { "\"$_\"" } (1 .. $size)),
- " END \n"),
- " { \$\$ = $size; }\n";
- };
-print $out ";\n";
-
-print $out <<EOF;
-%%
-static int
-yylex (void)
-{
- static int inner = 1;
- static int outer = 0;
- if (outer > $max)
- return 0;
- else if (inner > outer)
- {
- inner = 1;
- ++outer;
- return END;
- }
- return inner++;
-}
-
-static void
-yyerror (const char *msg)
-{
- fprintf (stderr, "%s\\n", msg);
-}
-
-int
-main (void)
-{
- yydebug = !!getenv ("YYDEBUG");
- return yyparse ();
-}
-EOF
-}
-
-##################################################################
-
-sub calc_input ($$)
-{
- my ($base, $max) = @_;
- my $out = new IO::File ">$base.input"
- or die;
- foreach (1 .. $max)
- {
- 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";
- 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+580*(581+581*(582+582*(583+583*(584+584*(585+585*(586+586*(587+587*(588+588*(589+589*(590+590*(591+591*(592+592*(593+593*(594+594*(595+595*(596+596*(597+597*(598+598*(599+599*(600+600*(601+601*(602+602*(603+603*(604+604*(605+605*(606+606*(607+607*(608+608*(609+609*(610+610*(611+611*(612+612*(613+613*(614+614*(615+615*(616+616*(617+617*(618+618*(619+619*(620+620*(621+621*(622+622*(623+623*(624+624*(625+625*(626+626*(627+627*(628+628*(629+629*(630+630*(631+631*(632+632*(633+633*(634+634*(635+635*(636+636*(637+637*(638+638*(639+639*(640+640*(641+641*(642+642*(643+643*(644+644*(645+645*(646+646*(647+647*(648+648*(649+649*(650+650*(651+651*(652+652*(653+653*(654+654*(655+655*(656+656*(657+657*(658+658*(659+659*(660+660*(661+661*(662+662*(663+663*(664+664*(665+665*(666+666*(667+667*(668+668*(669+669*(670+670*(671+671*(672+672*(673+673*(674+674*(675+675*(676+676*(677+677*(678+678*(679+679*(680+680*(681+681*(682+682*(683+683*(684+684*(685+685*(686+686*(687+687*(688+688*(689+689*(690+690*(691+691*(692+692*(693+693*(694+694*(695+695*(696+696*(697+697*(698+698*(699+699*(700+700*(701+701*(702+702*(703+703*(704+704*(705+705*(706+706*(707+707*(708+708*(709+709*(710+710*(711+711*(712+712*(713+713*(714+714*(715+715*(716+716*(717+717*(718+718*(719+719*(720+720*(721+721*(722+722*(723+723*(724+724*(725+725*(726+726*(727+727*(728+728*(729+729*(730+730*(731+731*(732+732*(733+733*(734+734*(735+735*(736+736*(737+737*(738+738*(739+739*(740+740*(741+741*(742+742*(743+743*(744+744*(745+745*(746+746*(747+747*(748+748*(749+749*(750+750*(751+751*(752+752*(753+753*(754+754*(755+755*(756+756*(757+757*(758+758*(759+759*(760+760*(761+761*(762+762*(763+763*(764+764*(765+765*(766+766*(767+767*(768+768*(769+769*(770+770*(771+771*(772+772*(773+773*(774+774*(775+775*(776+776*(777+777*(778+778*(779+779*(780+780*(781+781*(782+782*(783+783*(784+784*(785+785*(786+786*(787+787*(788+788*(789+789*(790+790*(791+791*(792+792*(793+793*(794+794*(795+795*(796+796*(797+797*(798+798*(799+799*(800+800*(801+801*(802+802*(803+803*(804+804*(805+805*(806+806*(807+807*(808+808*(809+809*(810+810*(811+811*(812+812*(813+813*(814+814*(815+815*(816+816*(817+817*(818+818*(819+819*(820+820*(821+821*(822+822*(823+823*(824+824*(825+825*(826+826*(827+827*(828+828*(829+829*(830+830*(831+831*(832+832*(833+833*(834+834*(835+835*(836+836*(837+837*(838+838*(839+839*(840+840*(841+841*(842+842*(843+843*(844+844*(845+845*(846+846*(847+847*(848+848*(849+849*(850+850*(851+851*(852+852*(853+853*(854+854*(855+855*(856+856*(857+857*(858+858*(859+859*(860+860*(861+861*(862+862*(863+863*(864+864*(865+865*(866+866*(867+867*(868+868*(869+869*(870+870*(871+871*(872+872*(873+873*(874+874*(875+875*(876+876*(877+877*(878+878*(879+879*(880+880*(881+881*(882+882*(883+883*(884+884*(885+885*(886+886*(887+887*(888+888*(889+889*(890+890*(891+891*(892+892*(893+893*(894+894*(895+895*(896+896*(897+897*(898+898*(899+899*(900+900*(901+901*(902+902*(903+903*(904+904*(905+905*(906+906*(907+907*(908+908*(909+909*(910+910*(911+911*(912+912*(913+913*(914+914*(915+915*(916+916*(917+917*(918+918*(919+919*(920+920*(921+921*(922+922*(923+923*(924+924*(925+925*(926+926*(927+927*(928+928*(929+929*(930+930*(931+931*(932+932*(933+933*(934+934*(935+935*(936+936*(937+937*(938+938*(939+939*(940+940*(941+941*(942+942*(943+943*(944+944*(945+945*(946+946*(947+947*(948+948*(949+949*(950+950*(951+951*(952+952*(953+953*(954+954*(955+955*(956+956*(957+957*(958+958*(959+959*(960+960*(961+961*(962+962*(963+963*(964+964*(965+965*(966+966*(967+967*(968+968*(969+969*(970+970*(971+971*(972+972*(973+973*(974+974*(975+975*(976+976*(977+977*(978+978*(979+979*(980+980*(981+981*(982+982*(983+983*(984+984*(985+985*(986+986*(987+987*(988+988*(989+989*(990+990*(991+991*(992+992*(993+993*(994+994*(995+995*(996+996*(997+997*(998+998*(999+999*(1000+1000*(1001))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))\n";
- }
-}
-
-##################################################################
-
-sub calc_grammar ($$$)
-{
- my ($base, $max, $directives) = @_;
-
- my $out = new IO::File ">$base.y"
- or die;
- print $out <<EOF;
-%{
-#include <stdio.h>
-
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#define USE(Var)
-
-/* Exercise pre-prologue dependency to %union. */
-typedef int semantic_value;
-
-static semantic_value global_result = 0;
-static int global_count = 0;
-%}
-
-/* Exercise %union. */
-$directives
-%error-verbose
-%union
-{
- semantic_value ival;
-};
-
-%{
-static int power (int base, int exponent);
-/* yyerror receives the location if:
- - %location & %pure & %glr
- - %location & %pure & %yacc & %parse-param. */
-static void yyerror (const char *s);
-#if YYPURE
-static int yylex (YYSTYPE* yylvalp);
-#else
-static int yylex (void);
-#endif
-%}
-
-/* Bison Declarations */
-%token CALC_EOF 0 "end of input"
-%token <ival> NUM "number"
-%type <ival> exp
-
-%nonassoc '=' /* comparison */
-%left '-' '+'
-%left '*' '/'
-%left NEG /* negation--unary minus */
-%right '^' /* exponentiation */
-
-/* Grammar follows */
-%%
-input:
- line
-| input line
-;
-
-line:
- '\\n'
-| exp '\\n' { USE (\$1); }
-;
-
-exp:
- NUM { \$\$ = \$1; }
-| exp '=' exp
- {
- if (\$1 != \$3)
- fprintf (stderr, "calc: error: %d != %d\\n", \$1, \$3);
- \$\$ = \$1;
- }
-| exp '+' exp { \$\$ = \$1 + \$3; }
-| exp '-' exp { \$\$ = \$1 - \$3; }
-| exp '*' exp { \$\$ = \$1 * \$3; }
-| exp '/' exp { \$\$ = \$1 / \$3; }
-| '-' exp %prec NEG { \$\$ = -\$2; }
-| exp '^' exp { \$\$ = power (\$1, \$3); }
-| '(' exp ')' { \$\$ = \$2; }
-| '(' error ')' { \$\$ = 1111; }
-| '!' { \$\$ = 0; YYERROR; }
-| '-' error { \$\$ = 0; YYERROR; }
-;
-%%
-/* The input. */
-static FILE *input;
-
-static void
-yyerror (const char *s)
-{
- fprintf (stderr, "%s\\n", s);
-}
-
-static int
-get_char (void)
-{
- return getc (input);
-}
-
-
-static void
-unget_char ( int c)
-{
- ungetc (c, input);
-}
-
-static int
-read_signed_integer (void)
-{
- int c = get_char ();
- int sign = 1;
- int n = 0;
-
- if (c == '-')
- {
- c = get_char ();
- sign = -1;
- }
-
- while (isdigit (c))
- {
- n = 10 * n + (c - '0');
- c = get_char ();
- }
-
- unget_char (c);
-
- return sign * n;
-}
-
-#if YYPUSH
-#ifndef HAVE_YYSTYPE
-static YYSTYPE yylval;
-#endif
-#endif
-
-static int
-#if YYPURE
-# define yylval (*yylvalp)
-yylex (YYSTYPE* yylvalp)
-#else
-yylex (void)
-#endif
-{
- int c;
-
- /* Skip white space. */
- while ((c = get_char ()) == ' ' || c == '\t')
- {
-
- }
-
- /* process numbers */
- if (c == '.' || isdigit (c))
- {
- unget_char ( c);
- yylval.ival = read_signed_integer ();
- return NUM;
- }
-
- /* Return end-of-file. */
- if (c == EOF)
- return CALC_EOF;
-
- /* Return single chars. */
- return c;
-}
-
-static int
-power (int base, int exponent)
-{
- int res = 1;
- if (exponent < 0)
- exit (3);
- for (/* Niente */; exponent; --exponent)
- res *= base;
- return res;
-}
-
-
-#if YYPUSH
-static int
-yyparse_wrapper ()
-{
- struct yypvars *ctx = yypvarsinit ();
- do {
- set_yychar (ctx, yylex ());
- ctx->yylval = yylval;
- yyparse (ctx);
- } while (get_yyresult (ctx) != 0);
- free (ctx);
-}
-#define yyparse yyparse_wrapper
-#endif
-
-int
-main (int argc, const char **argv)
-{
- semantic_value result = 0;
- int count = 0;
- int status;
-
- input = fopen ("calc.input", "r");
- if (!input)
- {
- perror ("calc.input");
- return 3;
- }
-
- status = yyparse ();
- if (global_result != result)
- abort ();
- if (global_count != count)
- abort ();
-
- return status;
-}
-EOF
-}
-
-##################################################################
-
-sub compile ($)
-{
- my ($base) = @_;
- system ("$bison $base.y -o $base.c") == 0
- or die;
- system ("$cc -o $base $base.c") == 0
- or die;
-}
-
-sub bench_grammar ($)
-{
- my ($gram) = @_;
- my %test =
- (
- "yacc-yacc" => '',
- "yacc-pure" => '%pure-parser',
- "push-yacc" => '%skeleton "push.c"',
- "push-pure" => '%skeleton "push.c" %pure-parser',
- "push-push" => '%skeleton "push.c" %push-parser',
- "popt-yacc" => '%skeleton "push_opt.c"',
- "popt-pure" => '%skeleton "push_opt.c" %pure-parser',
- "popt-push" => '%skeleton "push_opt.c" %push-parser',
- );
-
- my %bench;
- while (my ($name, $directives) = each %test)
- {
- print STDERR "$name\n";
- my $generator = "$gram" . "_grammar";
- &$generator ($name, 200, $directives);
- compile ($name);
- $bench{$name} = "system ('./$name');";
- }
-
- print "$gram:\n";
- my $res = timethese (50, \%bench, 'nop');
- cmpthese ($res, 'nop');
-}
-
-print STDERR "Using $bison, $cc.\n";
-calc_input ('calc', 200);
-bench_grammar ('calc');
-
-### Setup "GNU" style for perl-mode and cperl-mode.
-## Local Variables:
-## perl-indent-level: 2
-## perl-continued-statement-offset: 2
-## perl-continued-brace-offset: 0
-## perl-brace-offset: 0
-## perl-brace-imaginary-offset: 0
-## perl-label-offset: -2
-## cperl-indent-level: 2
-## cperl-brace-offset: 0
-## cperl-continued-brace-offset: 0
-## cperl-label-offset: -2
-## cperl-extra-newline-before-brace: t
-## cperl-merge-trailing-else: nil
-## cperl-continued-statement-offset: 2
-## End:
--- /dev/null
+#! /usr/bin/perl -w
+
+# Copyright (C) 2006 Free Software Foundation, Inc.
+#
+# This file is part of Bison, the GNU Compiler Compiler.
+#
+# Bison is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# Bison is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with autoconf; see the file COPYING. If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301, USA.
+
+use IO::File;
+use Benchmark qw (:all);
+
+my $bison = $ENV{'BISON'} || '@abs_top_builddir@/tests/bison';
+my $cc = $ENV{'CC'} || 'gcc';
+
+##################################################################
+
+sub triangular_grammar ($$$)
+{
+ my ($base, $max, $directives) = @_;
+
+ my $out = new IO::File ">$base.y"
+ or die;
+ print $out <<EOF;
+%error-verbose
+%debug
+%{
+#include <stdio.h>
+#include <stdlib.h>
+
+static int yylex (void);
+static void yyerror (const char *msg);
+%}
+%union
+{
+ int val;
+};
+
+%token END "end"
+%type <val> exp input
+EOF
+
+ for my $size (1 .. $max)
+ {
+ print $out "%token t$size $size \"$size\"\n";
+ };
+
+print $out <<EOF;
+%%
+input:
+ exp { if (\$1 != 0) abort (); \$\$ = \$1; }
+| input exp { if (\$2 != \$1 + 1) abort (); \$\$ = \$2; }
+;
+
+exp:
+ END
+ { \$\$ = 0; }
+EOF
+
+for my $size (1 .. $max)
+ {
+ use Text::Wrap;
+ print $out wrap ("| ", " ",
+ (map { "\"$_\"" } (1 .. $size)),
+ " END \n"),
+ " { \$\$ = $size; }\n";
+ };
+print $out ";\n";
+
+print $out <<EOF;
+%%
+static int
+yylex (void)
+{
+ static int inner = 1;
+ static int outer = 0;
+ if (outer > $max)
+ return 0;
+ else if (inner > outer)
+ {
+ inner = 1;
+ ++outer;
+ return END;
+ }
+ return inner++;
+}
+
+static void
+yyerror (const char *msg)
+{
+ fprintf (stderr, "%s\\n", msg);
+}
+
+int
+main (void)
+{
+ yydebug = !!getenv ("YYDEBUG");
+ return yyparse ();
+}
+EOF
+}
+
+##################################################################
+
+sub calc_input ($$)
+{
+ my ($base, $max) = @_;
+ my $out = new IO::File ">$base.input"
+ or die;
+ foreach (1 .. $max)
+ {
+ 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";
+ 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+580*(581+581*(582+582*(583+583*(584+584*(585+585*(586+586*(587+587*(588+588*(589+589*(590+590*(591+591*(592+592*(593+593*(594+594*(595+595*(596+596*(597+597*(598+598*(599+599*(600+600*(601+601*(602+602*(603+603*(604+604*(605+605*(606+606*(607+607*(608+608*(609+609*(610+610*(611+611*(612+612*(613+613*(614+614*(615+615*(616+616*(617+617*(618+618*(619+619*(620+620*(621+621*(622+622*(623+623*(624+624*(625+625*(626+626*(627+627*(628+628*(629+629*(630+630*(631+631*(632+632*(633+633*(634+634*(635+635*(636+636*(637+637*(638+638*(639+639*(640+640*(641+641*(642+642*(643+643*(644+644*(645+645*(646+646*(647+647*(648+648*(649+649*(650+650*(651+651*(652+652*(653+653*(654+654*(655+655*(656+656*(657+657*(658+658*(659+659*(660+660*(661+661*(662+662*(663+663*(664+664*(665+665*(666+666*(667+667*(668+668*(669+669*(670+670*(671+671*(672+672*(673+673*(674+674*(675+675*(676+676*(677+677*(678+678*(679+679*(680+680*(681+681*(682+682*(683+683*(684+684*(685+685*(686+686*(687+687*(688+688*(689+689*(690+690*(691+691*(692+692*(693+693*(694+694*(695+695*(696+696*(697+697*(698+698*(699+699*(700+700*(701+701*(702+702*(703+703*(704+704*(705+705*(706+706*(707+707*(708+708*(709+709*(710+710*(711+711*(712+712*(713+713*(714+714*(715+715*(716+716*(717+717*(718+718*(719+719*(720+720*(721+721*(722+722*(723+723*(724+724*(725+725*(726+726*(727+727*(728+728*(729+729*(730+730*(731+731*(732+732*(733+733*(734+734*(735+735*(736+736*(737+737*(738+738*(739+739*(740+740*(741+741*(742+742*(743+743*(744+744*(745+745*(746+746*(747+747*(748+748*(749+749*(750+750*(751+751*(752+752*(753+753*(754+754*(755+755*(756+756*(757+757*(758+758*(759+759*(760+760*(761+761*(762+762*(763+763*(764+764*(765+765*(766+766*(767+767*(768+768*(769+769*(770+770*(771+771*(772+772*(773+773*(774+774*(775+775*(776+776*(777+777*(778+778*(779+779*(780+780*(781+781*(782+782*(783+783*(784+784*(785+785*(786+786*(787+787*(788+788*(789+789*(790+790*(791+791*(792+792*(793+793*(794+794*(795+795*(796+796*(797+797*(798+798*(799+799*(800+800*(801+801*(802+802*(803+803*(804+804*(805+805*(806+806*(807+807*(808+808*(809+809*(810+810*(811+811*(812+812*(813+813*(814+814*(815+815*(816+816*(817+817*(818+818*(819+819*(820+820*(821+821*(822+822*(823+823*(824+824*(825+825*(826+826*(827+827*(828+828*(829+829*(830+830*(831+831*(832+832*(833+833*(834+834*(835+835*(836+836*(837+837*(838+838*(839+839*(840+840*(841+841*(842+842*(843+843*(844+844*(845+845*(846+846*(847+847*(848+848*(849+849*(850+850*(851+851*(852+852*(853+853*(854+854*(855+855*(856+856*(857+857*(858+858*(859+859*(860+860*(861+861*(862+862*(863+863*(864+864*(865+865*(866+866*(867+867*(868+868*(869+869*(870+870*(871+871*(872+872*(873+873*(874+874*(875+875*(876+876*(877+877*(878+878*(879+879*(880+880*(881+881*(882+882*(883+883*(884+884*(885+885*(886+886*(887+887*(888+888*(889+889*(890+890*(891+891*(892+892*(893+893*(894+894*(895+895*(896+896*(897+897*(898+898*(899+899*(900+900*(901+901*(902+902*(903+903*(904+904*(905+905*(906+906*(907+907*(908+908*(909+909*(910+910*(911+911*(912+912*(913+913*(914+914*(915+915*(916+916*(917+917*(918+918*(919+919*(920+920*(921+921*(922+922*(923+923*(924+924*(925+925*(926+926*(927+927*(928+928*(929+929*(930+930*(931+931*(932+932*(933+933*(934+934*(935+935*(936+936*(937+937*(938+938*(939+939*(940+940*(941+941*(942+942*(943+943*(944+944*(945+945*(946+946*(947+947*(948+948*(949+949*(950+950*(951+951*(952+952*(953+953*(954+954*(955+955*(956+956*(957+957*(958+958*(959+959*(960+960*(961+961*(962+962*(963+963*(964+964*(965+965*(966+966*(967+967*(968+968*(969+969*(970+970*(971+971*(972+972*(973+973*(974+974*(975+975*(976+976*(977+977*(978+978*(979+979*(980+980*(981+981*(982+982*(983+983*(984+984*(985+985*(986+986*(987+987*(988+988*(989+989*(990+990*(991+991*(992+992*(993+993*(994+994*(995+995*(996+996*(997+997*(998+998*(999+999*(1000+1000*(1001))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))\n";
+ }
+}
+
+##################################################################
+
+sub calc_grammar ($$$)
+{
+ my ($base, $max, $directives) = @_;
+
+ my $out = new IO::File ">$base.y"
+ or die;
+ print $out <<EOF;
+%{
+#include <stdio.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#define USE(Var)
+
+/* Exercise pre-prologue dependency to %union. */
+typedef int semantic_value;
+
+static semantic_value global_result = 0;
+static int global_count = 0;
+%}
+
+/* Exercise %union. */
+$directives
+%error-verbose
+%union
+{
+ semantic_value ival;
+};
+
+%{
+static int power (int base, int exponent);
+/* yyerror receives the location if:
+ - %location & %pure & %glr
+ - %location & %pure & %yacc & %parse-param. */
+static void yyerror (const char *s);
+#if YYPURE
+static int yylex (YYSTYPE* yylvalp);
+#else
+static int yylex (void);
+#endif
+%}
+
+/* Bison Declarations */
+%token CALC_EOF 0 "end of input"
+%token <ival> NUM "number"
+%type <ival> exp
+
+%nonassoc '=' /* comparison */
+%left '-' '+'
+%left '*' '/'
+%left NEG /* negation--unary minus */
+%right '^' /* exponentiation */
+
+/* Grammar follows */
+%%
+input:
+ line
+| input line
+;
+
+line:
+ '\\n'
+| exp '\\n' { USE (\$1); }
+;
+
+exp:
+ NUM { \$\$ = \$1; }
+| exp '=' exp
+ {
+ if (\$1 != \$3)
+ fprintf (stderr, "calc: error: %d != %d\\n", \$1, \$3);
+ \$\$ = \$1;
+ }
+| exp '+' exp { \$\$ = \$1 + \$3; }
+| exp '-' exp { \$\$ = \$1 - \$3; }
+| exp '*' exp { \$\$ = \$1 * \$3; }
+| exp '/' exp { \$\$ = \$1 / \$3; }
+| '-' exp %prec NEG { \$\$ = -\$2; }
+| exp '^' exp { \$\$ = power (\$1, \$3); }
+| '(' exp ')' { \$\$ = \$2; }
+| '(' error ')' { \$\$ = 1111; }
+| '!' { \$\$ = 0; YYERROR; }
+| '-' error { \$\$ = 0; YYERROR; }
+;
+%%
+/* The input. */
+static FILE *input;
+
+static void
+yyerror (const char *s)
+{
+ fprintf (stderr, "%s\\n", s);
+}
+
+static int
+get_char (void)
+{
+ return getc (input);
+}
+
+
+static void
+unget_char ( int c)
+{
+ ungetc (c, input);
+}
+
+static int
+read_signed_integer (void)
+{
+ int c = get_char ();
+ int sign = 1;
+ int n = 0;
+
+ if (c == '-')
+ {
+ c = get_char ();
+ sign = -1;
+ }
+
+ while (isdigit (c))
+ {
+ n = 10 * n + (c - '0');
+ c = get_char ();
+ }
+
+ unget_char (c);
+
+ return sign * n;
+}
+
+static int
+#if YYPURE
+# define yylval (*yylvalp)
+yylex (YYSTYPE* yylvalp)
+#else
+yylex (void)
+#endif
+{
+ int c;
+
+ /* Skip white space. */
+ while ((c = get_char ()) == ' ' || c == '\t')
+ {
+
+ }
+
+ /* process numbers */
+ if (c == '.' || isdigit (c))
+ {
+ unget_char ( c);
+ yylval.ival = read_signed_integer ();
+ return NUM;
+ }
+
+ /* Return end-of-file. */
+ if (c == EOF)
+ return CALC_EOF;
+
+ /* Return single chars. */
+ return c;
+}
+
+static int
+power (int base, int exponent)
+{
+ int res = 1;
+ if (exponent < 0)
+ exit (3);
+ for (/* Niente */; exponent; --exponent)
+ res *= base;
+ return res;
+}
+
+
+int
+main (int argc, const char **argv)
+{
+ semantic_value result = 0;
+ int count = 0;
+ int status;
+
+ input = fopen ("calc.input", "r");
+ if (!input)
+ {
+ perror ("calc.input");
+ return 3;
+ }
+
+ status = yyparse ();
+ if (global_result != result)
+ abort ();
+ if (global_count != count)
+ abort ();
+
+ return status;
+}
+EOF
+}
+
+##################################################################
+
+sub compile ($)
+{
+ my ($base) = @_;
+ system ("$bison $base.y -o $base.c") == 0
+ or die;
+ system ("$cc -o $base $base.c") == 0
+ or die;
+}
+
+sub bench_grammar ($)
+{
+ my ($gram) = @_;
+ my %test =
+ (
+ "yacc.c-pull-impure" => '',
+ "yacc.c-pull-pure" => '%pure-parser',
+ "push.c-pull-impure" => '%skeleton "push.c"',
+ "push.c-pull-pure" => '%skeleton "push.c" %pure-parser',
+ "push.c-push-impure" => '%skeleton "push.c" %push-parser',
+ "push.c-push-pure" => '%skeleton "push.c" %push-parser %pure-parser',
+ );
+
+ my %bench;
+ while (my ($name, $directives) = each %test)
+ {
+ print STDERR "$name\n";
+ my $generator = "$gram" . "_grammar";
+ &$generator ($name, 200, $directives);
+ compile ($name);
+ $bench{$name} = "system ('./$name');";
+ }
+
+ print "$gram:\n";
+ my $res = timethese (50, \%bench, 'nop');
+ cmpthese ($res, 'nop');
+}
+
+print STDERR "Using $bison, $cc.\n";
+calc_input ('calc', 200);
+bench_grammar ('calc');
+
+### Setup "GNU" style for perl-mode and cperl-mode.
+## Local Variables:
+## perl-indent-level: 2
+## perl-continued-statement-offset: 2
+## perl-continued-brace-offset: 0
+## perl-brace-offset: 0
+## perl-brace-imaginary-offset: 0
+## perl-label-offset: -2
+## cperl-indent-level: 2
+## cperl-brace-offset: 0
+## cperl-continued-brace-offset: 0
+## cperl-label-offset: -2
+## cperl-extra-newline-before-brace: t
+## cperl-merge-trailing-else: nil
+## cperl-continued-statement-offset: 2
+## End:
projects / bison.git / commitdiff
