+2001-12-13 Akim Demaille <akim@epita.fr>
+
+ The computation of nullable is broken: it doesn't handle empty
+ RHS's properly.
+
+ * tests/torture.at (GNU AWK Grammar): New.
+ * tests/sets.at (Nullable): New.
+ * src/nullable.c (set_nullable): Instead of blindly looping over
+ `ritems', loop over the rules, and then over their rhs's.
+
+ Work around Autotest bugs.
+
+ * src/warshall.c (bitmatrix_print): Don't use `+--+' as table
+ frame, because Autotest understand lines starting with a `+' as
+ traces from the shell. Then, they are not processed properly.
+ Admittedly an Autotest bug, but we don't have time to wait for
+ Autotest to catch up.
+ * tests/regression.at (Broken Closure): Adjust to the new table
+ frames.
+ Move to...
+ * tests/sets.at: here.
+
+2001-12-13 Akim Demaille <akim@epita.fr>
+
+ * src/closure.c (closure): Use nrules instead of playing tricks
+ with BITS_PER_WORD.
+
+2001-12-13 Akim Demaille <akim@epita.fr>
+
+ * src/print.c (print_actions): Output the handling of `$' as the
+ traces do: shifting the token EOF. Before EOF was treated as a
+ nonterminal.
+ * tests/regression.at: Adjust some tests.
+ * src/print_graph.c (print_core): Complete the set of items via
+ closure. The next-to-final and final states are still unsatisfying,
+ but that's to be addressed elsewhere.
+ No longer output the rule numbers, but do output the state number.
+ A single loop for the shifts + gotos is enough, but picked a
+ distinct color for each.
+ (print_graph): Initialize and finalize closure.
+
+2001-12-13 Akim Demaille <akim@epita.fr>
+
+ * src/reader.c (readgram): Remove dead code, an strip useless
+ braces.
+ (get_type): Remove, unused.
+
+2001-12-12 Akim Demaille <akim@epita.fr>
+
+ * src/complain.h, src/complain.c: Remove error_one_per_line, rely
+ on that of lib/error.c.
+
+2001-12-12 Akim Demaille <akim@epita.fr>
+
+ Some hosts don't like `/' in includes.
+
+ * src/system.h: Include libgettext.h without qualifying the path.
+ * src/Makefile.am (INCLUDES): Add $(top_srcdir)/intl, remove
+ $(top_srcdir).
+
+2001-12-11 Marc Autret <autret_m@epita.fr>
+
+ * src/output.c (output_parser): Remove useless muscle.
+
+2001-12-11 Marc Autret <autret_m@epita.fr>
+
+ * src/bison.simple: Remove #line just before %%epilogue. It
+ is now handled in ...
+ * src/reader.c (read_additionnal_code): Add the output of a
+ #line for the epilogue.
+
+2001-12-10 Marc Autret <autret_m@epita.fr>
+
+ * src/reader.c (copy_definition): Re-use CPP-outed code which
+ replace precedent remove.
+ * src/bison.simple: Remove #line before %%prologue because
+ %%input-line is wrong at this time.
+
+2001-12-10 Marc Autret <autret_m@epita.fr>
+
+ * src/reader.c (symbols_output): Clean up.
+ * src/output.c (output_gram, output): Clean up.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/lalr.c (initialize_lookaheads): New. Extracted from...
+ * src/LR0.c (set_state_table): here.
+ * src/lalr.c (lalr): Call it.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/state.h (shifts): Remove the `number' member: shifts are
+ attached to state, hence no longer need to be labelled with a
+ state number.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ Now that states have a complete set of members, the linked list of
+ shifts is useless: just fill directly the state's shifts member.
+
+ * src/state.h (shifts): Remove the `next' member.
+ * src/LR0.c (first_state, last_state): Remove.
+ Adjust the callers.
+ (augment_automaton): Don't look for the shifts that must be added
+ a shift on EOF: it is those of the state we looked for! But now,
+ since shifts are attached, it is no longer needed to looking
+ merely by its id: its number.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/LR0.c (augment_automaton): Better variable locality.
+ Remove an impossible branch: if there is a state corresponding to
+ the start symbol being shifted, then there is shift for the start
+ symbol from the initial state.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/LR0.c (augment_automaton): Call `insert_eof_shifting_state'
+ only when appropriate: when insert_start_shifting_state' is not
+ invoked.
+ * tests/regression.at (Rule Line Numbers): Adjust.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/LR0.c (augment_automaton): Now that all states have shifts,
+ merge the two cases addition shifts to the initial state.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/lalr.c (set_state_table): Move to...
+ * src/LR0.c: here.
+ * src/lalr.c (lalr): Don't call it...
+ * src/LR0.c (generate_states): do it.
+ * src/LR0.h (first_state): Remove, only the table is used.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/LR0.h (first_shift, first_reduction): Remove.
+ * src/lalr.c: Don't use first_shift: find shifts through the
+ states.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/LR0.c: Attach shifts to states as soon as they are
+ computed.
+ * src/lalr.c (set_state_table): Instead of assigning shifts to
+ state, just assert that the mapping was properly done.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/LR0.c (insert_start_shift): Rename as...
+ (insert_start_shifting_state): this.
+ (insert_eof_shifting_state, insert_accepting_state): New.
+ (augment_automaton): Adjust.
+ Better locality of the variables.
+ When looking if the start_symbol is shifted from the initial
+ state, using `while (... symbol != start_symbol ...)' sounds
+ better than `while (... symbol < start_symbol ...)': If fail
+ to see how the order between symbols could be relevant!
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/getargs.h: Don't declare `spec_name_prefix' and
+ `spec_file_prefix', declared by src/files.h.
+ * src/files.c, src/files.h: Default for spec_name_prefix is "yy".
+ * src/muscle_tab.c (muscle_init): Default prefix to NULL.
+ * src/output.c (prepare): Adjust.
+ * src/reader.c (symbols_output): Likewise.
+ * src/vmsgetargs.c: Vaguely adjust, but who cares?
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/muscle_tab.c (muscle_init): NULL is a better default than
+ `"0"'.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/reader.c (reader): Calling symbols_output once is enough.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ Now that states have a complete set of members, the linked list of
+ reductions is useless: just fill directly the state's reductions
+ member.
+
+ * src/state.h (struct reductions): Remove member `number' and
+ `next'.
+ * src/LR0.c (first_reduction, last_reduction): Remove.
+ (save_reductions): Don't link the new reductions, store them in
+ this_state.
+ * src/lalr.c (set_state_table): No need to attach reductions to
+ states, it's already done.
+ * src/output.c (output_actions): No longer free the shifts, then
+ the reductions, then the states: free all the states and their
+ members.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/options.c (OPTN, DRTV, BOTH): New.
+ (option_table): Use them.
+
+ * src/muscle_tab.c: Don't include xalloc.h and string.h: that's
+ the job of system.h.
+ * src/options.c: Don't include stdio.h and xalloc.h for the same
+ reasons.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * src/output.c (output, prepare): Make sure the values of the
+ muscles `action' and `prologue' are 0-terminated.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ Clean up GCC warnings.
+
+ * src/reader.c (copy_action): `buf' is not used.
+ (parse_skel_decl): Be static.
+ * src/muscle_tab.c (mhash1, mhash2, muscle_insert): Preserve `const'.
+ * src/options.h (create_long_option_table): Have a real prototype.
+ * lib/hash.c, lib/hash.h (hash_insert, hash_insert_at, hash_delete)
+ (hash_delete_at): Return const void *.
+ Adjust casts to preserve the const.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ * configure.in: Require 2.52g.
+ M4 is not needed, but AUTOM4TE is.
+ * m4/m4.m4: Remove.
+ * tests/Makefile.am: Adjust.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ One structure for states is enough, even though theoretically
+ there are LR(0) states and LALR(1) states.
+
+ * src/lalr.h (state_t): Remove.
+ (state_table): Be state_t **, not state_t *.
+ * src/state.h (core, CORE_ALLOC): Rename as...
+ (state_t, STATE_ALLOC): this.
+ Add the LALR(1) members: shifts, reductions, errs.
+ * src/LR0.c (state_table): Rename as...
+ (state_hash): this, to avoid name clashes with the global
+ `state_table'.
+ * src/print_graph.c, src/LR0.c, src/LR0.h, src/conflicts.c
+ * src/lalr.c, src/lalr.h, src/output.c, src/print.c: Adjust.
+
+2001-12-10 Akim Demaille <akim@epita.fr>
+
+ Bison dumps core on bash.y.
+ Reported by Pascal Bart.
+
+ * src/warshall.c (bitmatrix_print): New.
+ (TC): Use it.
+ When performing a transitive closure R(i, j) && R(j, k) => R(i, k),
+ j must be the outer loop.
+ * tests/regression.at (Broken Closure): New.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * tests/atlocal.in (CPPFLAGS): Do not leave a space between -I and
+ its argument.
+ Reported by Peter Hámorský.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/conflicts.c (err_table): Remove.
+ (resolve_sr_conflict): Adjust.
+ * src/lalr.h (state_t.reduction_table, state_t.shift_table):
+ Rename as...
+ (state_t.reductions, state_t.shifts): this.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/reduce.c (reduce_grammar_tables): No longer disable the
+ removal of useless rules via CPP but via `if (0)', so that the
+ compiler still check the code is valid.
+ For instance, it should have noticed `rline' no longer exists: use
+ the `line' member of rule_t.
+ * src/gram.c (dummy, rline): Remove, unused.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/output.c (pack_vector): Use assert, not berror.
+ * src/main.c (berror): Remove, unused.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ New experimental feature: if --verbose --trace output all the
+ items of a state, not only its kernel.
+
+ * src/print.c (print_core): If `trace_flag', then invoke closure
+ before outputting the items of the state (print_core is no longer
+ a correct name them).
+ (print_results): Invoke new_closure/free_closure if needed.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/LR0.c (new_itemsets): Use nshifts only, not shiftcount.
+ * src/closure.c, src/closure.h (itemsetsize): Rename as...
+ (nitemset): for consistency with the rest of the project.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/closure.c (print_closure): Improve.
+ (closure): Use it for printing input and output.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/closure.c (FIRSTS, FDERIVES): Adjust to reality: they are
+ indexed by nonterminals.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/warshall.c (TC, RTC): De-obsfucate (source reduced to 22% of
+ what it was!).
+ * src/warshall.h: Remove accidental duplication of the content.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/closure.c (set_fderives): De-obfuscate.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/closure.c (print_firsts, print_fderives): De-obfuscate.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/closure.c (set_firsts): De-obfuscate.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/output.c (action_row): De-obfuscate
+ using the good o' techniques: arrays not pointers, variable
+ locality, BITISSET, RESETBIT etc.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ 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.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * 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''.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/conflicts.c (flush_shift, resolve_sr_conflict): De-obfuscate
+ using the good o' techniques: arrays not pointers, variable
+ locality, BITISSET, RESETBIT etc.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/state.h (SHIFT_SYMBOL): New.
+ * src/conflicts.c: Use it to deobfuscate.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/conflicts.c (count_sr_conflicts, count_rr_conflicts)
+ (print_reductions): De-obfuscate using the good o' techniques:
+ arrays not pointers, variable locality, BITISSET.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/conflicts.c (print_reductions): Arrays, not pointers.
+ Use BITISSET.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/conflicts.c (print_reductions): Pessimize, but clarify.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/conflicts.c (print_reductions): Improve variable locality.
+
+2001-12-05 Akim Demaille <akim@epita.fr>
+
+ * src/conflicts.c (print_reductions): Pessimize, but clarify.
+
2001-12-05 Akim Demaille <akim@epita.fr>
* src/conflicts.c (print_reductions): Improve variable locality.
-
2001-12-05 Akim Demaille <akim@epita.fr>
* src/state.h (SHIFT_IS_ERROR, SHIFT_IS_GOTO, SHIFT_IS_SHIFT): New.
* src/lalr.c: Use them.
-
2001-12-05 Akim Demaille <akim@epita.fr>
* src/LR0.c (augment_automaton): Formatting changes.
Better variable locality.
-
2001-12-05 Akim Demaille <akim@epita.fr>
* src/lalr.c (matrix_print): New.
the handling of squeue.
`symbol >= 0' is wrong now, use `rule_table[ruleno].useful'.
-
2001-12-05 Akim Demaille <akim@epita.fr>
Because useless nonterminals are now kept alive (instead of being
(free_storage): Use `free', not `XFREE', for pointers that cannot
be null.
-
2001-12-05 Akim Demaille <akim@epita.fr>
* src/nullable.c (set_nullable): Deobfuscate the handling of
ritem.
`symbol >= 0' is wrong now, use `rule_table[ruleno].useful'.
-
2001-12-05 Akim Demaille <akim@epita.fr>
* src/gram.c, src/gram.h (ritem_print): New.
and may generate better code on some machines.
(yystpcpy): Use prototype if __STDC__ is defined, not just
if __cplusplus is defined.
-
+
2001-11-30 Akim Demaille <akim@epita.fr>
* configure.in (WARNING_CFLAGS): Add -Werror when possible.
projects / bison.git / blobdiff