Akim Demaille [Wed, 5 Dec 2001 09:34:55 +0000 (09:34 +0000)]
Pessimize the code to simplify it: from now on, all the states
have a valid SHIFTS, which NSHIFTS is possibly 0.
* src/LR0.c (shifts_new): Be global and move to..
* src/state.c, src/state.h: here.
* src/conflicts, src/lalr.c, src/output.c, src/print.c,
* src/print_graph: Adjust.
Akim Demaille [Wed, 5 Dec 2001 09:32:23 +0000 (09:32 +0000)]
* src/state.h (SHIFT_DISABLE, SHIFT_IS_DISABLED): New.
* src/conflicts.c: Use it.
Restore a few missing `if (!SHIFT_IS_DISABLED)' which were
incorrectly ``simplified''.
Akim Demaille [Wed, 5 Dec 2001 09:32:00 +0000 (09:32 +0000)]
* src/conflicts.c (flush_shift, resolve_sr_conflict): De-obfuscate
using the good o' techniques: arrays not pointers, variable
locality, BITISSET, RESETBIT etc.
Akim Demaille [Wed, 5 Dec 2001 09:31:23 +0000 (09:31 +0000)]
* src/conflicts.c (count_sr_conflicts, count_rr_conflicts)
(print_reductions): De-obfuscate using the good o' techniques:
arrays not pointers, variable locality, BITISSET.
Akim Demaille [Wed, 5 Dec 2001 09:28:27 +0000 (09:28 +0000)]
* src/lalr.c (transpose): Free the memory allocated to the
argument, as it is replaced by the results by the unique caller.
(build_relations): Merely invoke transpose: it handles the memory
deallocation.
Improve variable locality.
Avoid variables used as mere abbreviations.
(compute_lookaheads): Use arrays instead of pointers.
Akim Demaille [Wed, 5 Dec 2001 09:28:00 +0000 (09:28 +0000)]
* src/derives.c (print_derives): Display the ruleno.
* src/lalr.c (initialize_F, transpose): Better variable locality
to improve readability.
Avoid variables used as mere abbreviations.
Akim Demaille [Wed, 5 Dec 2001 09:27:23 +0000 (09:27 +0000)]
Because useless nonterminals are now kept alive (instead of being
`destroyed'), we now sometimes examine them, and store information
related to them. Hence we need to know their number, and adjust
memory allocations.
* src/reduce.c, src/reduce.h (nuseless_nonterminals): No longer
static.
* src/LR0.c (allocate_itemsets): The memory allocated to
`symbol_count' was used for two different purpose: once to count
the number of occurrences of each symbol, and later reassigned to
`shift_symbol', containing the symbol that can be shifted from a
given state.
Deobfuscate, i.e., allocate, use and free `symbol_count' here
only, and...
(new_itemsets): Allocate `shift_symbol' here.
(allocate_itemsets): symbol_count includes useless nonterminals.
Make room for them.
(free_storage): Use `free', not `XFREE', for pointers that cannot
be null.
Akim Demaille [Wed, 5 Dec 2001 09:26:05 +0000 (09:26 +0000)]
* src/gram.c, src/gram.h (ritem_print): New.
* src/gram.c (dummy): Remove, now there is actual code in gram.c.
(This useless function was defined only to work around VMS linkers
that can't handle compilation units with variables only).
* src/reduce.c (dump_grammar): Use it to trace the construction of
ritem.
Paul Eggert [Tue, 4 Dec 2001 14:10:51 +0000 (14:10 +0000)]
* src/bison.simple (union yyalloc): Change member names
to be the same as the stack names.
(yyparse): yyptr is now union yyalloc *, not char *.
(YYSTACK_RELOCATE): Likewise. This avoids a GCC warning,
and may generate better code on some machines.
Paul Eggert [Tue, 4 Dec 2001 14:10:07 +0000 (14:10 +0000)]
(union yyalloc): Change member names to be the same as the stack names.
(YYPOINTER): Remove.
(yyparse): yyptr is now union yyalloc *, not char *.
(YYSTACK_RELOCATE): Likewise. This avoids a GCC warning,
and may generate better code on some machines.
Paul Eggert [Tue, 4 Dec 2001 13:29:59 +0000 (13:29 +0000)]
* src/bison.simple (YYPOINTER): New macro.
(YYSTACK_RELOCATE): Use it to avoid a GCC warning.
(yystpcpy): Use prototype if __STDC__ is defined, not just
if __cplusplus is defined.
Paul Eggert [Tue, 4 Dec 2001 13:29:27 +0000 (13:29 +0000)]
(YYPOINTER): New macro.
(YYSTACK_RELOCATE): Use it to avoid a GCC warning.
(yystpcpy): Use prototype if __STDC__ is defined, not just
if __cplusplus is defined.
Akim Demaille [Fri, 30 Nov 2001 14:25:16 +0000 (14:25 +0000)]
* configure.in (WARNING_CFLAGS): Add -Werror when possible.
(CFLAGS): Do not include the WARNING_CFLAGS here, since GNU
Gettext doesn't compile cleanly, and dies with -Werror.
* src/Makefile.am, lib/Makefile.am, tests/atlocal.in (CFLAGS):
Include WARNING_CFLAGS here.
* lib/xstrdup.c: Include xalloc.h, so that xstrdup be declared
before being defined.
Akim Demaille [Fri, 30 Nov 2001 14:04:24 +0000 (14:04 +0000)]
* lib/quotearg.h (quotearg_n, quotearg_n_style):
First arg is int, not unsigned.
* lib/quotearg.c (quotearg_n, quotearg_n_style): Likewise.
(SIZE_MAX, UINT_MAX): New macros.
(quotearg_n_options): Abort if N is negative.
Avoid overflow check on hosts where size_t is 64 bits and int
is 32 bits, as overflow is impossible there.
Fix off-by-one typo that caused unnecessary reallocation.
Akim Demaille [Fri, 30 Nov 2001 14:00:14 +0000 (14:00 +0000)]
Name space cleanup in generated parser.
* doc/bison.texinfo (Bison Parser): Discuss system headers
and their effect on the user name space.
* src/bison.simple:
(YYSTACK_ALLOC, YYSTACK_FREE, union yyalloc, YYSTACK_GAP_MAX,
YYSTACK_BYTES, YYSTACK_RELOCATE): Do not define unless necessary,
i.e. unless ! defined (yyoverflow) || defined (YYERROR_VERBOSE).
(YYSIZE_T): New macro. Use it instead of size_t, to avoid infringing
on user names when possible.
(YYSTACK_USE_ALLOCA): Do not define; just use any existing defn.
Simplify test for whather <alloca.h> exists.
(<stdlib.h>): Include if we will use malloc, and if standard C or C++.
(<stdio.h>): Include if YYDEBUG.
(yymemcpy): Renamed from __yy_memcpy. Do not define unless
! defined (yyoverflow) && ! defined (yymemcpy).
(yymemcpy, yyparse): Rename local variables as needed so that
they all begin with 'yy'.
(yystrlen, yystpcpy): New functions.
(YY_DECL_NON_LSP_VARIABLES): Renamed from _YY_DECL_VARIABLES.
All uses changed.
(yyparse): size_t -> YYSIZE_T. Use yystrlen and yystpcpy
instead of relying on string.h functions. Use YYSTACK_ALLOC
and YYSTACK_FREE instead of malloc and free.
Akim Demaille [Fri, 30 Nov 2001 10:49:24 +0000 (10:49 +0000)]
Instead of mapping the LHS of unused rules to -1, keep the LHS
valid, but flag the rules as invalid.
* src/gram.h (rule_t): `useful' is a new member.
* src/print.c (print_grammar): Adjust.
* src/derives.c (set_derives): Likewise.
* src/reader.c (packgram, reduce_output): Likewise.
* src/reduce.c (reduce_grammar_tables): Likewise.
* tests/reduce.at (Underivable Rules, Useless Rules): New.
Akim Demaille [Fri, 30 Nov 2001 10:48:14 +0000 (10:48 +0000)]
* src/reduce.c (nonterminals_reduce): Instead of throwing away
useless nonterminals, move them at the end of the symbol arrays.
(reduce_output): Adjust.
* tests/reduce.at (Useless Nonterminals): Adjust.
Paul Eggert [Fri, 30 Nov 2001 02:56:45 +0000 (02:56 +0000)]
* src/bison.simple (YYSTACK_REALLOC): Remove.
(YYSTACK_ALLOC): Resurrect this macro, with its old meaning.
(YYSTACK_FREE, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYSTACK_RELOCATE):
New macros.
(union yyalloc): New type.
(__yy_memcpy): Last arg is size_t, not unsigned int, to remove
an arbitrary restriction on hosts where size_t is wider than int.
(yyparse): Don't dump core if alloca or malloc fails; instead, report
a parser stack overflow. Allocate just one block of memory for all
three stacks, instead of allocating three blocks; this typically is
faster and reduces fragmentation.
Do not limit the number of items in the stack to a value that fits
in 'int', as this is an arbitrary limit on hosts with 64-bit
size_t and 32-bit int.
Paul Eggert [Fri, 30 Nov 2001 02:54:54 +0000 (02:54 +0000)]
(YYSTACK_REALLOC): Remove.
(YYSTACK_ALLOC): Resurrect this macro, with its old meaning.
(YYSTACK_FREE, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYSTACK_RELOCATE):
New macros.
(union yyalloc): New type.
(__yy_memcpy): Last arg is size_t, not unsigned int, to remove
an arbitrary restriction on hosts where size_t is wider than int.
(yyparse): Don't dump core if alloca or malloc fails; instead, report
a parser stack overflow. Allocate just one block of memory for all
three stacks, instead of allocating three blocks; this typically is
faster and reduces fragmentation.
Do not limit the number of items in the stack to a value that fits
in 'int', as this is an arbitrary limit on hosts with 64-bit
size_t and 32-bit int.
Marc Autret [Wed, 28 Nov 2001 21:31:13 +0000 (21:31 +0000)]
* src/output.h: And put its extern declaration here.
* src/output.c (error_verbose): Define here.
(prepare): Echo name modification.
* src/getargs.h: Clean its extern declaration.
* src/getargs.c (error_verbose_flag): Remove.
(getargs): Remove case 'e'.
* src/options.c (option_table): 'error-verbose' is now seen as simple
percent option.
Include output.h.
* src/reader.c (read_declarations): Remove case tok_include.
(parse_include_decl): Remove.
* src/lex.h (token_t): Remove tok_include.
* src/options.c (option_table): 'include' is now a simple command line
option.
Marc Autret [Wed, 28 Nov 2001 20:32:53 +0000 (20:32 +0000)]
* src/bison.simple: Adjust muscle names.
* src/muscle_tab.c (muscle_init): Also rename the muscles.
* src/output.c (prepare): s/_/-/ for the muscles names.
(output_parser): When scanning for a muscle, allow '-' instead of '_'.
Akim Demaille [Wed, 28 Nov 2001 11:43:24 +0000 (11:43 +0000)]
* tests/reduce.at (Useless Terminals, Useless Nonterminals): New.
* src/reduce.c (reduce_grammar_tables): Do not free useless tags,
as all tags are free'ed afterwards.
From Enrico Scholz.
Marc Autret [Tue, 27 Nov 2001 20:30:13 +0000 (20:30 +0000)]
* src/bison.simple: Remove YYERROR_VERBOSE using.
Use %%error_verbose.
(yyparse): Likewise.
* src/output.c (prepare): Give its final value.
* src/muscle_tab.c (muscle_init): Init new muscle 'error_verbose'.
* src/getargs.h: Add its extern declaration.
* src/getargs.c (error_verbose_flag): New int.
(getargs): Update to catch new case.
* src/options.c (option_table): 'error-verbose' is a new option.
(shortopts): Update.
Marc Autret [Mon, 26 Nov 2001 21:06:22 +0000 (21:06 +0000)]
* src/reader.c (parse_include_decl): New, Not yet implemented.
(read_declarations): Add case tok_include.
* src/getargs.h (include): Add its extern definition.
* src/getargs.c (include): New const char *.
(getargs): Add case '-I'.
* src/options.c (option_table): Add include as command line and
percent option.
* src/lex.h (token_t): Add tok_include.
Akim Demaille [Mon, 26 Nov 2001 15:27:58 +0000 (15:27 +0000)]
* src/reader.c (readgram): Make sure rules for mid-rule actions
have a lineno equal to that of their host rule.
Reported by Hans Aberg.
* tests/regression.at (Rule Line Numbers): New.
Akim Demaille [Mon, 26 Nov 2001 09:50:29 +0000 (09:50 +0000)]
* src/reader.c (read_declarations): Don't abort on tok_illegal,
issue an error message.
* tests/regression.at (Invalid %directive): New.
Reported by Hans Aberg.
Akim Demaille [Mon, 26 Nov 2001 09:32:32 +0000 (09:32 +0000)]
* src/conflicts.c (conflicts_print): Don't complain at all when
there are no reduce/reduce conflicts, and as many shift/reduce
conflicts as expected.
* tests/regression.at (%expect right): Adjust.
Akim Demaille [Fri, 23 Nov 2001 14:13:02 +0000 (14:13 +0000)]
Attaching lineno to buckets is stupid, since only one copy of each
symbol is kept, only the line of the first occurrence is kept too.
* src/symtab.h, src/symtab.c (bucket): Remove the line member.
* src/reader.c (rline_allocated): Remove, unused.
(symbol_list): Have a `line' member.
(symbol_list_new): New.
(readgram): Use it.
* src/print.c (print_grammar): Output the rule line numbers.
* tests/regression.at (Solved SR Conflicts)
(Unresolved SR Conflicts): Adjust.
Reported by Hans Aberg.
Akim Demaille [Tue, 20 Nov 2001 13:16:10 +0000 (13:16 +0000)]
* po/sv.po: New.
* configure.in (ALL_LINGUAS): Adjust.
* po/POTFILE.in: Remove `nullable.c' and `derives.c' which no
longer contains strings to translate.
Akim Demaille [Mon, 19 Nov 2001 10:38:12 +0000 (10:38 +0000)]
* src/closure.c, src/derives.c, src/nullable.c: Adjust various
trace messages.
* src/LR0.c: Likewise.
(allocate_itemsets): Use arrays instead of pointers to clarify.