Do not infringe on the global user namespace when using C++.
(YYFPRINTF, YYSTDERR): New macros, needed for the above.
All uses of `fprintf' and `stderr' changed.
* doc/bison.texinfo: Document YYFPRINTF, YYSTDERR.
(YYSIZE_T, YYSTACK_ALLOC, YYSTACK_FREE):
Do not infringe on the global user namespace when using C++.
(YYFPRINTF, YYSTDERR): New macros, needed for the above.
All uses of `fprintf' and `stderr' changed.
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.
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.
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.
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.
* 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.
(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!
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.
(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.
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.
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.
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.
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.
