Commit Graph

9 Commits

Author SHA1 Message Date
Akim Demaille
70fb574717 examples: add license headers
Prompted by Rici Lake.
https://stackoverflow.com/questions/62658368/#comment110853985_62661621
Discussed with Paul Eggert.

* doc/bison.texi, examples/c/bistromathic/parse.y,
* examples/c/lexcalc/parse.y, examples/c/lexcalc/scan.l,
* examples/c/pushcalc/calc.y, examples/c/reccalc/parse.y,
* examples/c/reccalc/scan.l, examples/d/calc.y,
* examples/java/calc/Calc.y, examples/java/simple/Calc.y:
Install the GPL3+ header.
2020-07-08 22:19:37 +02:00
Akim Demaille
964fb2aa6f examples: include the generated header
* examples/c/bistromathic/parse.y, examples/c/lexcalc/parse.y,
* examples/c/reccalc/parse.y: here.
Add some comments.

* src/parse-gram.y (api_version): Pull out of handle_require.
Bump to 3.7.
2020-07-05 08:18:51 +02:00
Akim Demaille
7a226860ef doc: promote yytoken_kind_t, not yytokentype
* data/skeletons/c.m4 (yytoken_kind_t): New.
* data/skeletons/c++.m4, data/skeletons/lalr1.cc (yysymbol_kind_type):
New.
* examples/c/lexcalc/parse.y, examples/c/reccalc/parse.y,
* tests/regression.at:
Use them.
* doc/bison.texi: Replace "enum yytokentype" by "yytoken_kind_t".
(api.token.raw): Explain that it forces "yytoken_kind_t" to coincide
with "yysymbol_kind_t".
(Calling Convention): Mention YYEOF.
(Table of Symbols): Add entries for "yytoken_kind_t" and
"yysymbol_kind_t".
(Glossary): Add entries for "Kind", "Token kind" and "Symbol kind".
2020-04-12 19:24:12 +02:00
Akim Demaille
72c9fa4510 skeletons: use "end of file" instead of "$end"
The name "$end" is nice in the report, in particular it avoids that
pointed-rules (aka items) be too long.  It also helps keeping them
"standard".

But it is bad in error messages, we should report "end of file" (or
maybe "end of input", this is debatable).  So, unless the user already
defined the alias for the error token herself, make it "end of file".
It should even be translated if the user already translated some
tokens, so that there is now no strong reason to redefine the $end
token.

* src/output.c (prepare_symbol_names): Issue "end of file" instead of
"$end".

* data/skeletons/lalr1.java (yytnamerr_): Remove the renaming hack.

* build-aux/update-test: Accept files with names containing a "+",
such as c++.at.
* tests/actions.at, tests/c++.at, tests/conflicts.at,
* tests/glr-regression.at, tests/regression.at, tests/skeletons.at:
Adjust.
2020-04-12 13:56:44 +02:00
Akim Demaille
388e12ac0f examples: lexcalc: demonstrate location tracking
The bistromathic example should not use Flex, it makes it too complex.
But it was the only example to show location tracking with Flex.

* examples/c/lexcalc/lexcalc.test, examples/c/lexcalc/parse.y,
* examples/c/lexcalc/scan.l: Demonstrate location tracking as is done
in bistromathic.
2020-02-29 12:15:19 +01:00
Akim Demaille
c592202345 examples: clean up
* examples/c/calc/calc.y: Restore to its original state, with
parse.error=detailed instead of parse.error=custom (this example
should be simple).
* examples/c/calc/calc.test: Check syntax errors.
* examples/c/lexcalc/parse.y: Add comments.
2020-01-26 14:02:08 +01:00
Akim Demaille
0adda755a2 examples: fixes in lexcalc
* examples/c/lexcalc/parse.y: Formatting/comment changes.
(line): Don't return a value.
Print the result here, which avoids printing a value for lines with an
error.
(yyerror): Be sure to increment the pointed, not the pointer...
* examples/c/lexcalc/lexcalc.test: Check errors.
* examples/c/lexcalc/local.mk: Fix a dependency.
2019-02-16 16:51:15 +01:00
Akim Demaille
afdefecab6 examples: simplify computation of yydebug
* examples/c/lexcalc/parse.y: here.
2018-12-11 06:53:25 +01:00
Akim Demaille
d657da9fb4 examples: add a simple Flex+Bison example in C
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.
2018-12-09 15:30:25 +01:00