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also support $<foo>$ in the %initial-action

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scan-code.l is already passing argument to b4_dollar_dollar for the
initial acton, but its definition (of b4_dollar_dollar) does not use
this argument.

Generalize this definition, and use it for the %initial-action too.

* data/c.m4 (b4_dollar_dollar_, b4_dollar_pushdef, b4_dollar_popdef):
Instead of expecting a pointer, require a value, and use ".".
Since they are now generic enough, move to...
* data/c-like.m4: this new file.
* data/c.m4, data/java.m4: Load it.
* data/glr.c, data/lalr1.cc, data/lalr1.java, data/yacc.c: Use
b4_dollar_pushdef for the %initial-action.
* tests/actions.at: Check that.
* data/Makefile.am: Adjust.
* NEWS, doc/bison.texi: Document.
This commit is contained in:
Akim Demaille
2012-07-27 14:20:00 +02:00
parent d6a44ffd00
commit cd735a8c6c
11 changed files with 76 additions and 62 deletions
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6
doc/bison.texi
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@@ -4552,9 +4552,9 @@ code.
@deffn {Directive} %initial-action @{ @var{code} @}
@findex %initial-action
Declare that the braced @var{code} must be invoked before parsing each time
@code{yyparse} is called. The @var{code} may use @code{$$} and
@code{@@$} --- initial value and location of the lookahead --- and the
@code{%parse-param}.
@code{yyparse} is called. The @var{code} may use @code{$$} (or
@code{$<@var{tag}>$}) and @code{@@$} --- initial value and location of the
lookahead --- and the @code{%parse-param}.
@end deffn
For instance, if your locations use a file name, you may use