bison

mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-09 12:23:04 +00:00

Files

Adela Vais dc15b62a7c d: add the custom error message feature

Parser.Context class returns a const YYLocation, so Lexer's method
yyerror() needs to receive the location as a const parameter.

Internal error reporting flow is changed to be similar to that of
the other skeletons. Before, case YYERRLAB was calling yyerror()
with the result of yysyntax_error() as the string parameter. As the
custom error message lets the user decide if they want to use
yyerror() or not, this flow needed to be changed. Now, case YYERRLAB
calls yyreportSyntaxError(), that builds the error message using
yysyntaxErrorArguments(). Then yyreportSyntaxError() passes the
error message to the user defined syntax_error() in case of a custom
message, or to yyerror() otherwise.

In the tests in tests/calc.at, the order of the tokens needs to be
changed in order of precedence, so that the D program outputs the
expected tokens in the same order as the other parsers.

* data/skeletons/lalr1.d: Add the custom error message feature.
* doc/bison.texi: Document it.
* examples/d/calc/calc.y: Adjust.
* tests/calc.at, tests/local.at: Test it.

2020-11-07 17:03:23 +01:00

style: comment changes in the skeletons

2020-11-03 08:46:54 +01:00

c++

glr2.cc: add an example

2020-09-26 18:33:48 +02:00

d: add the custom error message feature

2020-11-07 17:03:23 +01:00

java

java: avoid Integer(String), use parseInt

2020-11-03 08:46:54 +01:00

extexi

doc: simplify the extraction of example snippets

2020-09-05 09:19:39 +02:00

local.mk

build: check -Wmissing-prototypes

2020-06-01 08:29:53 +02:00

README.md

package: bump copyrights to 2020

2020-01-10 19:16:23 +01:00

test

tests: show logs

2020-05-23 18:02:44 +02:00

README.md

This directory contains examples of Bison grammar files, sorted per language.

Several of them come from the documentation, which should be installed together with Bison. The URLs are provided for convenience.

These examples come with a README and a Makefile. Not only can they be used to toy with Bison, they can also be starting points for your own grammars.

Please, be sure to read the C examples before looking at the other languages, as these examples are simpler.