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Check for unrecognized %define variables similar to checking for

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unrecognized %code qualifiers.  Check for redefined %define variables.
* data/bison.m4 (b4_check_for_unrecognized_names): New macro that
generalizes...
(b4_check_percent_code_qualifiers): ... this, which now wraps it.
(b4_check_percent_define_variables): New, also wraps it.
* data/glr.c: Unless glr.cc is wrapping glr.c, declare no valid %define
variables using b4_check_percent_define_variables.
* data/glr.cc, data/lalr1.cc: Declare the valid %define variables as
all those exercised in the test suite and all those listed in the
`Default values' section of c++.m4.  Are there others?
* data/push.c, data/yacc.c: Declare no valid %define variables.
* src/muscle_tab.c, src/muscle_tab.h (muscle_find_const): New function,
similar to muscle_find, but it works even when the muscle stores a
const value.
(muscle_grow_used_name_list): New function for constructing the used
name list muscles that b4_check_for_unrecognized_names requires.
* src/parse-gram.y (prologue_declaration): Warn if a variable is
%define'd more than once.  Define the b4_used_percent_define_variables
muscle with muscle_grow_used_name_list.
(grammar_declaration): Abbreviate %code code with
muscle_grow_used_name_list.
* tests/input.at (%define errors): New.
This commit is contained in:
Joel E. Denny
2007-01-07 07:50:27 +00:00
parent 3fc65ead4d
commit 7eb8a0bcca
13 changed files with 472 additions and 317 deletions
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9
src/muscle_tab.h
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@@ -26,6 +26,7 @@
void muscle_init (void);
void muscle_insert (char const *key, char const *value);
char *muscle_find (char const *key);
char const *muscle_find_const (char const *key);
void muscle_free (void);
@@ -116,4 +117,12 @@ void muscles_m4_output (FILE *out);
for special characters in the file name. */
void muscle_boundary_grow (char const *key, boundary bound);
/* Grow KEY for the occurrence of the name USED_NAME at LOC appropriately for
use with b4_check_for_unrecognized_names in ../data/bison.m4. USED_NAME
is not escaped with digraphs, so it must not contain `[' or `]'. As a
precondition on b4_check_for_unrecognized_names, it can't contain `,'
either. */
void muscle_grow_used_name_list (char const *key, char const *used_name,
location loc);
#endif /* not MUSCLE_TAB_H_ */