bison

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Akim Demaille 0a82316e54 glr2.cc: example: use objects (not pointers) to represent the AST

Currently we are using pointers.  The whole point of
glr2.cc (vs. glr.cc) is precisely to allow genuine C++ objects to be
semantic values.  Let's make that work.

* data/skeletons/glr2.cc (glr_state::glr_state): Be sure to initialize
yysval.
(glr_state): Add copy-ctor, assignment and dtor.
(glr_state::copyFrom): Be sure to initialize the destination if it was
not.
(glr_state::~glr_state): Destroy the semantic value.
* examples/c++/glr/ast.hh: Rewrite so that we use genuine objects,
rather than a traditional OOP hierarchy that requires to deal with
pointers.
With help from Bruno Belanyi <bruno.belanyi@epita.fr>.
* examples/c++/glr/c++-types.yy: Remove memory management.
Use true objects.
(main): Don't reach yydebug directly.

* examples/c++/glr/local.mk: We need C++11.

2020-12-20 18:41:42 +01:00

style: comment and formatting changes, and fixes

2020-11-08 13:42:15 +01:00

c++

glr2.cc: example: use objects (not pointers) to represent the AST

2020-12-20 18:41:42 +01:00

d: change YYLocation's type from class to struct

2020-11-20 22:09:31 +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

examples: avoid "unbound variable" errors

2020-11-20 06:42:39 +01:00

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.