+2009-04-21 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Document %define lr.type and lr.default_rules.
+ * NEWS (2.5): Add an entry.
+ * src/getargs.c (usage): Mention IELR(1) and canonical LR(1)
+ besides just LALR(1) and GLR(1).
+ * doc/bison.texinfo (Introduction): Likewise.
+ (Language and Grammar): Bison is no longer limited to LALR(1)
+ restrictions.
+ (GLR parsing): Say deterministic or LR(1) rather than LALR(1)
+ when trying to distinguish from GLR. Talk about LR(1) grammars
+ rather than LALR(1) grammars.
+ (Decl Summary): In %define api.push_pull entry, say it applies
+ to deterministic parsers in C rather than LALR(1) parsers in C.
+ Add lr.default_rules entry.
+ Add lr.type entry.
+ (Mystery Conflicts): Bison is no longer limited to LALR(1)
+ restrictions.
+ (Generalized LR Parsing): Same changes as for the previous GLR
+ section.
+ (Memory Management): Say deterministic rather than LALR(1).
+ (Understanding): Correct some bison output.
+ Index discussion of "accepting state".
+ Say deterministic rather than LALR(1).
+ (Bison Options): In --yacc entry, say deterministic rather than
+ LALR(1).
+ In --report, --graph, and --xml entries, just don't mention
+ LALR(1).
+ (C++ Parsers): Say deterministic rather than LALR(1).
+ (Table of Symbols): Likewise in YYSTACK_USE_ALLOCA entry.
+ (Glossary): Add Accepting State, Consistent State, Default Rule,
+ and IELR(1) definitions.
+ In Generalized LR (GLR) definition, make same changes as in
+ previous GLR sections.
+ In LALR(1) definition, say Bison uses LALR(1) by default rather
+ than implying Bison is limited to LALR(1).
+ (LocalWords): Add IELR.
+
+2009-04-21 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Finish implementing %define lr.type.
+ Its value can be "LALR", "IELR", or "canonical LR".
+ * lib/timevar.def (TV_IELR_PHASE1): New var.
+ (TV_IELR_PHASE2): New var.
+ (TV_IELR_PHASE3): New var.
+ (TV_IELR_PHASE4): New var.
+ * src/Makefile.am (bison_SOURCES): Add AnnotationList.c,
+ AnnotationList.h, InadequacyList.c, InadequacyList.h, Sbitset.c,
+ Sbitset.h, ielr.h, and ielr.c.
+ * src/getargs.h, src/getargs.c (enum trace, trace_args,
+ trace_types): Add trace_ielr.
+ * src/lalr.h, src/lalr.c (ngotos): Export it.
+ (F): Rename to...
+ (goto_follows): ... this, update all uses, and export it.
+ (set_goto_map): Export it.
+ (map_goto): Export it.
+ (compute_lookahead_tokens): Don't free goto_follows yet. Now
+ handled in ielr.
+ (initialize_LA): Export it. Move lookback allocation to...
+ (lalr): ... here because, for canonical LR, initialize_LA must
+ be invoked but lookback and much of the rest of LALR isn't
+ needed.
+ * main.c (main): Instead of lalr, invoke ielr, which invokes
+ lalr.
+ * src/reader.c (reader): Default lr.type to "LALR".
+ Default lr.default_rules to "accepting" if lr.type is "canonical
+ LR". Leave the default as "all" otherwise.
+ Check for a valid lr.type value.
+ * src/state.h, src/state.c (struct state_list): Add state_list
+ member.
+ (state_new): Initialize state_list member to NULL.
+ (state_new_isocore): New function, exported.
+ * tests/existing.at (AT_TEST_EXISTING_GRAMMAR): New macro that
+ exercises all values of lr.type.
+ (GNU AWK Grammar): Rename test group to...
+ (GNU AWK 3.1.0 Grammar): ... this, and extend to use
+ AT_TEST_EXISTING_GRAMMAR.
+ (GNU Cim Grammar): Extend to use AT_TEST_EXISTING_GRAMMAR.
+ (GNU pic Grammar): Rename test group to...
+ (GNU pic (Groff 1.18.1) Grammar): ... this, and extend to use
+ AT_TEST_EXISTING_GRAMMAR.
+ * tests/reduce.at (AT_TEST_LR_TYPE): New macro that exercises
+ all values of lr.type.
+ (Single State Split): New test groups using AT_TEST_LR_TYPE.
+ (Lane Split): Likewise.
+ (Complex Lane Split): Likewise.
+ (Split During Added Lookahead Propagation): Likewise.
+
+2009-04-21 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Add new files for IELR and canonical LR implementation.
+ * src/AnnotationList.c: New.
+ * src/AnnotationList.h: New.
+ * src/InadequacyList.c: New.
+ * src/InadequacyList.h: New.
+ * src/Sbitset.c: New.
+ * src/Sbitset.h: New.
+ * src/ielr.c: New.
+ * src/ielr.h: New.
+
2009-04-20 Joel E. Denny <jdenny@ces.clemson.edu>
Implement %define lr.default_rules.
projects / bison.git / blobdiff