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c++: demonstrate custom error messages in the examples

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Let's use c++/glr to demonstrate custom error messages in C++ (not
just in glr2.cc).

* examples/c++/glr/c++-types.yy (report_syntax_error): New.
* examples/c++/glr/c++-types.test: Adjust.
* examples/c/bistromathic/parse.y: Comment changes.
* tests/local.at (AT_YYERROR_DEFINE(c++)): Use a nicer way to print
the lookakead's name.
This commit is contained in:
Akim Demaille
2021-09-07 08:21:40 +02:00
parent a75072476e
commit 2142e59155
6 changed files with 58 additions and 11 deletions
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9
examples/c++/README.md
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@@ -39,6 +39,15 @@ examples.
Extracted from the documentation: [A Complete C++
Example](https://www.gnu.org/software/bison/manual/html_node/A-Complete-C_002b_002b-Example.html).
## glr
This example demonstrates the use of GLR parsers to handle (local)
ambiguities in the C++ language. See the node "Merging GLR Parses" in
Bison's documentation.
It uses (Bison) variants to store objects as semantic values. It also
demonstrates custom error messages in C++.
<!---
Local Variables: