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examples: sort them per language and complete them
Convert some of the READMEs to Markdown, which is now more common, and nicely displayed in some git hosting services. Add missing READMEs and Makefiles. Generate XML, HTML and Dot files. Be sure to ship the test files. Complete CLEANFILES to remove all generated files. * examples/calc++: Move into... * examples/c++: here. * examples/mfcalc, examples/rpcalc: Move into... * examples/c: here. * examples/README.md, examples/c++/calc++/Makefile, examples/c/local.mk, * examples/c/mfcalc/Makefile, examples/c/rpcalc/Makefile, * examples/d/README.md, examples/java/README.md: New files. * examples/test (medir): Be robust to deeper directory nesting.
This commit is contained in:
Akim Demaille
19
examples/c++/calc++/.gitignore
vendored
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19
examples/c++/calc++/.gitignore
vendored
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/*.o
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/*.tmp
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/.deps
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/calc++
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/calc++.cc
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/calc++.exe
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/calc.stamp
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/driver.cc
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/driver.hh
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/location.hh
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/parser.cc
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/parser.hh
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/parser.output
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/parser.stamp
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/parser.yy
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/position.hh
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/scanner.cc
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/scanner.ll
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/stack.hh
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41
examples/c++/calc++/Makefile
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41
examples/c++/calc++/Makefile
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# This Makefile is designed to be simple and readable. It does not
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# aim at portability. It requires GNU Make.
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BASE = calc++
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BISON = bison
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CXX = g++
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FLEX = flex
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XSLTPROC = xsltproc
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all: $(BASE)
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%.cc %.hh %.xml %.gv: %.yy
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$(BISON) $(BISONFLAGS) --xml --graph=$*.gv -o $*.cc $<
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%.cc: %.ll
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$(FLEX) $(FLEXFLAGS) -o$@ $<
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%.o: %.cc
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$(CXX) $(CXXFLAGS) -c -o$@ $<
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$(BASE): $(BASE).o driver.o parser.o scanner.o
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$(CXX) -o $@ $^
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$(BASE).o: parser.hh
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parser.o: parser.hh
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scanner.o: parser.hh
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run: $(BASE)
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@echo "Type arithmetic expressions. Quit with ctrl-d."
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./$< -
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html: parser.html
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%.html: %.xml
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$(XSLTPROC) $(XSLTPROCFLAGS) -o $@ $$($(BISON) --print-datadir)/xslt/xml2xhtml.xsl $<
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CLEANFILES = \
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$(BASE) *.o \
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parser.hh parser.cc parser.output parser.xml parser.html parser.gv location.hh \
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scanner.cc
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clean:
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rm -f $(CLEANFILES)
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54
examples/c++/calc++/README.md
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54
examples/c++/calc++/README.md
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This directory contains calc++, a simple Bison grammar file in C++.
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Please, read the corresponding chapter in the documentation: "A Complete C++
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Example". It is also available on line (maybe with a different version of
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Bison):
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https://www.gnu.org/software/bison/manual/html_node/A-Complete-C_002b_002b-Example.html
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To use it, copy this directory into some work directory, and run `make` to
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compile the executable, and try it. It is a simple calculator which accepts
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several variable definitions, one per line, and then a single expression to
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evaluate.
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The program calc++ expects the file to parse as argument; pass `-` to read
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the standard input (and then hit <Ctrl-d>, control-d, to end your input).
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```
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$ ./calc++ -
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one := 1
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two := 2
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three := 3
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(one + two * three) * two * three
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<Ctrl-d>
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42
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```
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You may pass `-p` to activate the parser debug traces, and `-s` to activate
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the scanner's.
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<!---
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Local Variables:
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fill-column: 76
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ispell-dictionary: "american"
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End:
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Copyright (C) 2018 Free Software Foundation, Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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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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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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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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# LocalWords: mfcalc calc parsers yy MERCHANTABILITY Ctrl ispell american
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--->
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58
examples/c++/calc++/calc++.test
Executable file
58
examples/c++/calc++/calc++.test
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#! /bin/sh
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# Copyright (C) 2005-2015, 2018 Free Software Foundation, Inc.
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#
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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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cat >input <<EOF
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toto := 1
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toto
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EOF
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run 0 1
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run -noerr 0 1 -s
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cat >input <<EOF
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a := 1
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b := 2
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c := 3
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d := a + b * c
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d
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EOF
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run 0 7
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run -noerr 0 7 -p
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cat >input <<EOF
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a := 1
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b := 2
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c := 3
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d := (a + b) * c
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d
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EOF
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run 0 9
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cat >input <<EOF
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a := 1
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d := a + b * c
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EOF
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run 1 'err: -:3.1: syntax error, unexpected end of file, expecting ( or identifier or number'
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cat >input <<EOF
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a := 072101108108111044032119111114108100033
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a
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EOF
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run 1 'err: -:1.6-44: integer is out of range: 072101108108111044032119111114108100033'
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84
examples/c++/calc++/local.mk
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84
examples/c++/calc++/local.mk
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## Copyright (C) 2005-2006, 2008-2015, 2018 Free Software Foundation,
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## Inc.
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##
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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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## ------------------- ##
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## Parser generation. ##
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## ------------------- ##
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# Don't depend on $(BISON) otherwise we would rebuild these files
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# in srcdir, including during distcheck, which is forbidden.
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%D%/parser.stamp: $(BISON_IN) $(dist_pkgdata_DATA)
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SUFFIXES += .yy .stamp
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.yy.stamp:
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$(AM_V_YACC)rm -f $@
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$(AM_V_at)touch $@.tmp
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$(AM_V_at)$(YACCCOMPILE) -o $*.cc $<
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$(AM_V_at)mv -f $@.tmp $@
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$(calcxx_sources_generated): %D%/parser.stamp
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@test -f $@ || rm -f %D%/parser.stamp
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@test -f $@ || $(MAKE) $(AM_MAKEFLAGS) %D%/parser.stamp
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CLEANFILES += \
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$(calcxx_sources_generated) \
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%D%/parser.output \
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%D%/parser.stamp \
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%D%/scanner.cc
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CLEANDIRS += %D%/*.dSYM
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## -------------------- ##
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## Building & testing. ##
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## -------------------- ##
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# Avoid using BUILT_SOURCES which is too global.
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$(%C%_calc___OBJECTS): $(calcxx_sources_generated)
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calcxx_sources_extracted = \
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%D%/driver.cc \
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%D%/driver.hh \
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%D%/scanner.ll \
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%D%/calc++.cc
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calcxx_extracted = \
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$(calcxx_sources_extracted) \
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%D%/parser.yy
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extracted += $(calcxx_extracted)
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calcxx_sources_generated = \
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%D%/parser.cc \
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%D%/parser.hh \
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%D%/location.hh
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calcxx_sources = \
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$(calcxx_sources_extracted) \
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$(calcxx_sources_generated)
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if FLEX_CXX_WORKS
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if ENABLE_CXX
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check_PROGRAMS += %D%/calc++
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nodist_%C%_calc___SOURCES = $(calcxx_sources)
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# Don't use gnulib's system headers.
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%C%_calc___CPPFLAGS = -I$(top_srcdir)/%D% -I$(top_builddir)/%D%
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%C%_calc___CXXFLAGS = $(AM_CXXFLAGS) $(FLEX_SCANNER_CXXFLAGS)
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TESTS += %D%/calc++.test
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endif ENABLE_CXX
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endif FLEX_CXX_WORKS
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EXTRA_DIST += %D%/calc++.test
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## ------------ ##
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## Installing. ##
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## ------------ ##
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calcxxdir = $(docdir)/%D%
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calcxx_DATA = $(calcxx_extracted)
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dist_calcxx_DATA = %D%/README.md %D%/Makefile
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