Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-09 12:23:04 +00:00
Code Issues Packages Projects Releases Wiki Activity

doc: token.prefix

Browse Source 
* doc/bison.simple (Decl Summary): Document token.prefix.
	(Calc++ Parser): Various fixes.
	Formatting changes.
	Use token.prefix.
	Introduce a macro TOKEN to shorten the code and make it more
	readable.
	(Calc++ Scanner): Adjust.
	* NEWS (Variable token.prefix): New.
This commit is contained in:
Akim Demaille
2009-05-07 09:13:08 +02:00
parent ab2a9f5793
commit 99c08fb662
3 changed files with 99 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
NEWS
View File

@@ -9,6 +9,22 @@ Bison News
Also, it is possible to add code to the parser's constructors using
"%code init" and "%define init_throws".
** Variable token.prefix
The variable token.prefix changes the way tokens are identified in
the generated files. This is especially useful to avoid collisions
with identifiers in the target language. For instance
%token FILE for ERROR
%define token.prefix "TOK_"
%%
start: FILE for ERROR;
will generate the definition of the symbols TOK_FILE, TOK_for, and
TOK_ERROR in the generated sources. In particular, the scanner must
use these prefixed token names, although the grammar itself still
uses the short names (as in the sample rule given above).
* Changes in version 2.5 (????-??-??):
** IELR(1) and Canonical LR(1) Support