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* doc/gpl-3.0.texi: New file. * doc/gpl.texi: Remove. * COPYING, GNUmakefile, HACKING, Makefile.am, Makefile.cfg: * Makefile.maint, NEWS, PACKAGING, README, README-alpha: * README-hacking, TODO, bootstrap, bootstrap.conf: * configure.ac, data/Makefile.am, data/README, data/bison.m4: * data/c++-skel.m4, data/c++.m4, data/c-skel.m4, data/c.m4: * data/glr.c, data/glr.cc, data/java-skel.m4, data/java.m4: * data/lalr1.cc, data/lalr1.java, data/location.cc: * data/push.c, data/yacc.c, data/m4sugar/m4sugar.m4: * djgpp/Makefile.maint, djgpp/README.in, djgpp/config.bat: * djgpp/config.sed, djgpp/config.site, djgpp/config_h.sed: * djgpp/djunpack.bat, djgpp/subpipe.c, djgpp/subpipe.h: * djgpp/testsuite.sed, doc/Makefile.am, doc/bison.texinfo: * doc/fdl.texi, doc/refcard.tex, etc/Makefile.am, etc/README: * etc/bench.pl.in, examples/Makefile.am, examples/extexi: * examples/calc++/Makefile.am, lib/Makefile.am, lib/abitset.c: * lib/abitset.h, lib/bbitset.h, lib/bitset.c, lib/bitset.h: * lib/bitset_stats.c, lib/bitset_stats.h, lib/bitsetv-print.c: * lib/bitsetv-print.h, lib/bitsetv.c, lib/bitsetv.h: * lib/ebitset.c, lib/ebitset.h, lib/get-errno.c: * lib/get-errno.h, lib/lbitset.c, lib/lbitset.h: * lib/libiberty.h, lib/main.c, lib/subpipe.c, lib/subpipe.h: * lib/timevar.c, lib/timevar.def, lib/timevar.h: * lib/vbitset.c, lib/vbitset.h, lib/yyerror.c: * m4/c-working.m4, m4/cxx.m4, m4/m4.m4, m4/subpipe.m4: * m4/timevar.m4, src/LR0.c, src/LR0.h, src/Makefile.am: * src/assoc.c, src/assoc.h, src/closure.c, src/closure.h: * src/complain.c, src/complain.h, src/conflicts.c: * src/conflicts.h, src/derives.c, src/derives.h, src/files.c: * src/files.h, src/flex-scanner.h, src/getargs.c: * src/getargs.h, src/gram.c, src/gram.h, src/graphviz.c: * src/lalr.c, src/lalr.h, src/location.c, src/location.h: * src/main.c, src/muscle_tab.c, src/muscle_tab.h: * src/nullable.c, src/nullable.h, src/output.c, src/output.h: * src/parse-gram.c, src/parse-gram.h, src/parse-gram.y: * src/print.c, src/print.h, src/print_graph.c: * src/print_graph.h, src/reader.c, src/reader.h, src/reduce.c: * src/reduce.h, src/relation.c, src/relation.h: * src/revision.h, src/scan-code.h, src/scan-code.l: * src/scan-gram.h, src/scan-gram.l, src/scan-skel.h: * src/scan-skel.l, src/state.c, src/state.h, src/symlist.c: * src/symlist.h, src/symtab.c, src/symtab.h, src/system.h: * src/tables.c, src/tables.h, src/uniqstr.c, src/uniqstr.h: * tests/Makefile.am, tests/actions.at, tests/c++.at: * tests/calc.at, tests/conflicts.at, tests/cxx-type.at: * tests/existing.at, tests/glr-regression.at: * tests/headers.at, tests/input.at, tests/java.at: * tests/local.at, tests/output.at, tests/push.at: * tests/reduce.at, tests/regression.at, tests/sets.at: * tests/skeletons.at, tests/synclines.at, tests/testsuite.at: * tests/torture.at: Update to GPLv3.
354 lines
7.7 KiB
Plaintext
354 lines
7.7 KiB
Plaintext
# Exercising Bison Grammar Reduction. -*- Autotest -*-
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# Copyright (C) 2001, 2002 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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AT_BANNER([[Grammar Reduction.]])
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## ------------------- ##
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## Useless Terminals. ##
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## ------------------- ##
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AT_SETUP([Useless Terminals])
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AT_DATA([[input.y]],
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[[%verbose
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%output "input.c"
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%token useless1
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%token useless2
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%token useless3
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%token useless4
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%token useless5
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%token useless6
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%token useless7
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%token useless8
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%token useless9
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%token useful
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%%
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exp: useful;
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]])
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AT_CHECK([[bison input.y]])
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AT_CHECK([[sed -n '/^Grammar/q;/^$/!p' input.output]], 0,
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[[Terminals which are not used
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useless1
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useless2
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useless3
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useless4
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useless5
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useless6
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useless7
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useless8
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useless9
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]])
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AT_CLEANUP
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## ---------------------- ##
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## Useless Nonterminals. ##
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## ---------------------- ##
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AT_SETUP([Useless Nonterminals])
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AT_DATA([[input.y]],
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[[%verbose
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%output "input.c"
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%nterm useless1
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%nterm useless2
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%nterm useless3
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%nterm useless4
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%nterm useless5
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%nterm useless6
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%nterm useless7
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%nterm useless8
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%nterm useless9
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%token useful
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%%
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exp: useful;
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]])
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AT_CHECK([[bison input.y]], 0, [],
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[[input.y: warning: 9 useless nonterminals
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input.y:4.8-15: warning: useless nonterminal: useless1
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input.y:5.8-15: warning: useless nonterminal: useless2
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input.y:6.8-15: warning: useless nonterminal: useless3
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input.y:7.8-15: warning: useless nonterminal: useless4
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input.y:8.8-15: warning: useless nonterminal: useless5
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input.y:9.8-15: warning: useless nonterminal: useless6
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input.y:10.8-15: warning: useless nonterminal: useless7
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input.y:11.8-15: warning: useless nonterminal: useless8
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input.y:12.8-15: warning: useless nonterminal: useless9
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]])
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AT_CHECK([[sed -n '/^Grammar/q;/^$/!p' input.output]], 0,
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[[Useless nonterminals
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useless1
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useless2
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useless3
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useless4
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useless5
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useless6
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useless7
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useless8
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useless9
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]])
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AT_CLEANUP
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## --------------- ##
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## Useless Rules. ##
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## --------------- ##
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AT_SETUP([Useless Rules])
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AT_KEYWORDS([report])
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AT_DATA([[input.y]],
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[[%verbose
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%output "input.c"
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%token useful
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%%
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exp: useful;
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useless1: '1';
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useless2: '2';
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useless3: '3';
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useless4: '4';
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useless5: '5';
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useless6: '6';
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useless7: '7';
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useless8: '8';
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useless9: '9';
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]])
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AT_CHECK([[bison input.y]], 0, [],
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[[input.y: warning: 9 useless nonterminals and 9 useless rules
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input.y:6.1-8: warning: useless nonterminal: useless1
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input.y:7.1-8: warning: useless nonterminal: useless2
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input.y:8.1-8: warning: useless nonterminal: useless3
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input.y:9.1-8: warning: useless nonterminal: useless4
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input.y:10.1-8: warning: useless nonterminal: useless5
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input.y:11.1-8: warning: useless nonterminal: useless6
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input.y:12.1-8: warning: useless nonterminal: useless7
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input.y:13.1-8: warning: useless nonterminal: useless8
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input.y:14.1-8: warning: useless nonterminal: useless9
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input.y:6.11-13: warning: useless rule: useless1: '1'
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input.y:7.11-13: warning: useless rule: useless2: '2'
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input.y:8.11-13: warning: useless rule: useless3: '3'
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input.y:9.11-13: warning: useless rule: useless4: '4'
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input.y:10.11-13: warning: useless rule: useless5: '5'
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input.y:11.11-13: warning: useless rule: useless6: '6'
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input.y:12.11-13: warning: useless rule: useless7: '7'
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input.y:13.11-13: warning: useless rule: useless8: '8'
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input.y:14.11-13: warning: useless rule: useless9: '9'
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]])
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AT_CHECK([[sed -n '/^Grammar/q;/^$/!p' input.output]], 0,
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[[Useless nonterminals
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useless1
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useless2
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useless3
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useless4
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useless5
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useless6
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useless7
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useless8
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useless9
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Terminals which are not used
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'1'
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'2'
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'3'
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'4'
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'5'
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'6'
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'7'
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'8'
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'9'
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Useless rules
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2 useless1: '1'
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3 useless2: '2'
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4 useless3: '3'
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5 useless4: '4'
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6 useless5: '5'
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7 useless6: '6'
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8 useless7: '7'
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9 useless8: '8'
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10 useless9: '9'
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]])
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AT_CLEANUP
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## ------------------- ##
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## Reduced Automaton. ##
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## ------------------- ##
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# Check that the automaton is that as the for the grammar reduced by
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# hand.
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AT_SETUP([Reduced Automaton])
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AT_KEYWORDS([report])
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# The non reduced grammar.
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# ------------------------
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AT_DATA([[not-reduced.y]],
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[[/* A useless token. */
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%token useless_token
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/* A useful one. */
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%token useful
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%verbose
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%output "not-reduced.c"
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%%
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exp: useful { /* A useful action. */ }
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| non_productive { /* A non productive action. */ }
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;
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not_reachable: useful { /* A not reachable action. */ }
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;
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non_productive: non_productive useless_token
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{ /* Another non productive action. */ }
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;
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%%
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]])
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AT_CHECK([[bison not-reduced.y]], 0, [],
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[[not-reduced.y: warning: 2 useless nonterminals and 3 useless rules
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not-reduced.y:14.1-13: warning: useless nonterminal: not_reachable
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not-reduced.y:11.6-19: warning: useless nonterminal: non_productive
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not-reduced.y:11.6-57: warning: useless rule: exp: non_productive
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not-reduced.y:14.16-56: warning: useless rule: not_reachable: useful
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not-reduced.y:17.17-18.63: warning: useless rule: non_productive: non_productive useless_token
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]])
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AT_CHECK([[sed -n '/^Grammar/q;/^$/!p' not-reduced.output]], 0,
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[[Useless nonterminals
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not_reachable
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non_productive
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Terminals which are not used
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useless_token
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Useless rules
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2 exp: non_productive
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3 not_reachable: useful
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4 non_productive: non_productive useless_token
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]])
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# The reduced grammar.
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# --------------------
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AT_DATA([[reduced.y]],
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[[/* A useless token. */
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%token useless_token
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/* A useful one. */
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%token useful
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%verbose
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%output "reduced.c"
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%%
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exp: useful { /* A useful action. */ }
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// | non_productive { /* A non productive action. */ } */
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;
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//not_reachable: useful { /* A not reachable action. */ }
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// ;
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//non_productive: non_productive useless_token
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// { /* Another non productive action. */ }
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// ;
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%%
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]])
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AT_CHECK([[bison reduced.y]])
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# Comparing the parsers.
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cp reduced.c expout
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AT_CHECK([sed 's/not-reduced/reduced/g' not-reduced.c], 0, [expout])
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AT_CLEANUP
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## ------------------- ##
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## Underivable Rules. ##
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## ------------------- ##
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AT_SETUP([Underivable Rules])
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AT_KEYWORDS([report])
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AT_DATA([[input.y]],
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[[%verbose
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%output "input.c"
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%token useful
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%%
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exp: useful | underivable;
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underivable: indirection;
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indirection: underivable;
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]])
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AT_CHECK([[bison input.y]], 0, [],
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[[input.y: warning: 2 useless nonterminals and 3 useless rules
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input.y:5.15-25: warning: useless nonterminal: underivable
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input.y:6.14-24: warning: useless nonterminal: indirection
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input.y:5.15-25: warning: useless rule: exp: underivable
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input.y:6.14-24: warning: useless rule: underivable: indirection
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input.y:7.14-24: warning: useless rule: indirection: underivable
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]])
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AT_CHECK([[sed -n '/^Grammar/q;/^$/!p' input.output]], 0,
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[[Useless nonterminals
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underivable
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indirection
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Useless rules
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2 exp: underivable
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3 underivable: indirection
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4 indirection: underivable
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]])
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AT_CLEANUP
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## ---------------- ##
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## Empty Language. ##
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## ---------------- ##
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AT_SETUP([Empty Language])
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AT_DATA([[input.y]],
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[[%output "input.c"
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%%
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exp: exp;
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]])
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AT_CHECK([[bison input.y]], 1, [],
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[[input.y: warning: 2 useless nonterminals and 2 useless rules
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input.y:3.1-3: fatal error: start symbol exp does not derive any sentence
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]])
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AT_CLEANUP
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