* doc/bison.texinfo: Tag rpcalc.y snippets.
Add missing includes.
(Rpcalc Rules): Don't issue leading tabs.
Complete an Info menu.
Use @result.
* examples/rpcalc/local.mk: New.
* examples/rpcalc/rpcalc.test: New.
* examples/local.mk: Use them.
* examples/mfcalc/mfcalc.test: Remove dup test.
* examples/test: Disable debug traces.
Grammar Rules for @code{rpcalc}
-* Rpcalc Input::
-* Rpcalc Line::
-* Rpcalc Expr::
+* Rpcalc Input:: Explanation of the @code{input} nonterminal
+* Rpcalc Line:: Explanation of the @code{line} nonterminal
+* Rpcalc Expr:: Explanation of the @code{expr} nonterminal
Location Tracking Calculator: @code{ltcalc}
Here are the C and Bison declarations for the reverse polish notation
calculator. As in C, comments are placed between @samp{/*@dots{}*/}.
+@comment file: rpcalc.y
@example
/* Reverse polish notation calculator. */
%@{
#define YYSTYPE double
+ #include <stdio.h>
#include <math.h>
int yylex (void);
void yyerror (char const *);
Here are the grammar rules for the reverse polish notation calculator.
+@comment file: rpcalc.y
@example
input: /* empty */
| input line
;
line: '\n'
- | exp '\n' @{ printf ("\t%.10g\n", $1); @}
+ | exp '\n' @{ printf ("%.10g\n", $1); @}
;
exp: NUM @{ $$ = $1; @}
rule are referred to as @code{$1}, @code{$2}, and so on.
@menu
-* Rpcalc Input::
-* Rpcalc Line::
-* Rpcalc Expr::
+* Rpcalc Input:: Explanation of the @code{input} nonterminal
+* Rpcalc Line:: Explanation of the @code{line} nonterminal
+* Rpcalc Expr:: Explanation of the @code{expr} nonterminal
@end menu
@node Rpcalc Input
@example
line: '\n'
- | exp '\n' @{ printf ("\t%.10g\n", $1); @}
+ | exp '\n' @{ printf ("%.10g\n", $1); @}
;
@end example
Here is the code for the lexical analyzer:
+@comment file: rpcalc.y
@example
@group
/* The lexical analyzer returns a double floating point
kept to the bare minimum. The only requirement is that it call
@code{yyparse} to start the process of parsing.
+@comment file: rpcalc.y
@example
@group
int
@code{yyerror} (@pxref{Interface, ,Parser C-Language Interface}), so
here is the definition we will use:
+@comment file: rpcalc.y
@example
@group
#include <stdio.h>
@example
$ @kbd{rpcalc}
@kbd{4 9 +}
-13
+@result{} 13
@kbd{3 7 + 3 4 5 *+-}
--13
+@result{} -13
@kbd{3 7 + 3 4 5 * + - n} @r{Note the unary minus, @samp{n}}
-13
+@result{} 13
@kbd{5 6 / 4 n +}
--3.166666667
+@result{} -3.166666667
@kbd{3 4 ^} @r{Exponentiation}
-81
+@result{} 81
@kbd{^D} @r{End-of-file indicator}
$
@end example
include examples/calc++/local.mk
include examples/mfcalc/local.mk
+include examples/rpcalc/local.mk
1+2*3
EOF
run 0 7
-run 0 7
cat >input <<EOF
(1+2) * 3
--- /dev/null
+/calc.h
+/rpcalc.stamp
+/rpcalc.y
--- /dev/null
+## Process this file with automake to produce Makefile.in -*-Makefile-*-
+
+## Copyright (C) 2005-2006, 2008-2012 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 3 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, see <http://www.gnu.org/licenses/>.
+
+## ------------ ##
+## Extracting. ##
+## ------------ ##
+
+# Extract in src.
+$(top_srcdir)/examples/rpcalc/rpcalc.stamp: $(doc) $(extexi)
+ $(AM_V_GEN)rm -f $@ $@.tmp
+ $(AM_V_at)touch $@.tmp
+ $(AM_V_at)cd $(top_srcdir)/examples/rpcalc && \
+ $(AWK) -f ../extexi -v VERSION="$(VERSION)" \
+ ../../doc/bison.texinfo -- calc.h rpcalc.y
+ $(AM_V_at)mv $@.tmp $@
+
+$(rpcalc_extracted): $(top_srcdir)/examples/rpcalc/rpcalc.stamp
+ $(AM_V_GEN)if test -f $@; then :; else \
+ rm -f $< && \
+ $(MAKE) $(AM_MAKEFLAGS) $<; \
+ fi
+
+## -------------------- ##
+## Building & testing. ##
+## -------------------- ##
+
+BUILT_SOURCES += $(rpcalc_sources)
+MAINTAINERCLEANFILES += $(top_srcdir)/examples/rpcalc/rpcalc.stamp $(rpcalc_sources)
+EXTRA_DIST += examples/rpcalc/rpcalc.stamp
+
+rpcalc_extracted = \
+ examples/rpcalc/rpcalc.y
+rpcalc_sources = \
+ $(rpcalc_extracted)
+
+check_PROGRAMS += examples/rpcalc/rpcalc
+examples_rpcalc_rpcalc_LDADD = -lm
+examples_rpcalc_rpcalc_SOURCES = \
+ $(rpcalc_sources)
+
+examples_rpcalc_rpcalc_CPPFLAGS = -I$(top_srcdir)/examples/rpcalc
+TESTS += examples/rpcalc/rpcalc.test
+EXTRA_DIST += examples/rpcalc/rpcalc.test
--- /dev/null
+#! /bin/sh
+
+# Copyright (C) 2005-2012 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 3 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, see <http://www.gnu.org/licenses/>.
+
+cat >input <<EOF
+1 2 3 * +
+EOF
+run 0 7
+
+cat >input <<EOF
+1.1 2.2 3.3 * +
+EOF
+run 0 8.36
+
+cat >input <<EOF
+1 2 + 3 *
+EOF
+run 0 9
+
+cat >input <<EOF
+1 2 3 4 5 6 7 8 9 * * * * * * * *
+EOF
+run 0 362880
+
+cat >input <<EOF
+3 7 + 3 4 5 * + - n
+EOF
+run 0 13
+
+cat >input <<EOF
+3 4 ^
+EOF
+run 0 81
#! /bin/sh
-set -x
+
# Copyright (C) 2005-2012 Free Software Foundation, Inc.
#
# This program is free software: you can redistribute it and/or modify
projects / bison.git / commitdiff
