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examples: add a simple Flex+Bison example in C

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Suggested by Askar Safin.
http://lists.gnu.org/archive/html/bug-bison/2018-12/msg00003.html

* examples/c/lexcalc/Makefile, examples/c/lexcalc/README.md,
* examples/c/lexcalc/lexcalc.test, examples/c/lexcalc/local.mk,
* examples/c/lexcalc/parse.y, examples/c/lexcalc/scan.l:
New.
This commit is contained in:
Akim Demaille
2018-12-09 14:19:00 +01:00
parent 4cbdcaa572
commit d657da9fb4
10 changed files with 270 additions and 6 deletions
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11
examples/c++/calc++/README.md
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@@ -1,6 +1,10 @@
This directory contains calc++, a simple Bison grammar file in C++.
# calc++ - A Flex+Bison calculator
Please, read the corresponding chapter in the documentation: "A Complete C++
This directory contains calc++, a Bison grammar file in C++. If you never
saw the traditional implementation in C, please first read
examples/c/lexcalc, which can be seen as a C precursor of this example.
Read the corresponding chapter in the documentation: "A Complete C++
Example". It is also available on line (maybe with a different version of
Bison):
https://www.gnu.org/software/bison/manual/html_node/A-Complete-C_002b_002b-Example.html
@@ -27,7 +31,6 @@ You may pass `-p` to activate the parser debug traces, and `-s` to activate
the scanner's.
<!---
Local Variables:
fill-column: 76
ispell-dictionary: "american"
@@ -50,5 +53,5 @@ 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/>.
# LocalWords: mfcalc calc parsers yy MERCHANTABILITY Ctrl ispell american
# LocalWords: calc parsers yy MERCHANTABILITY Ctrl ispell american
--->