Update etc/bench.pl. Optimize push mode a little (the yyn change

[bison.git] / ChangeLog

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+2006-12-26  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+       Update etc/bench.pl.  Optimize push mode a little (the yyn change
+       deserves most of the credit).
+       * Makefile.am (SUBDIRS): Add etc subdirectory.
+       * configure.ac (AC_CONFIG_FILES): Add etc/bench.pl and etc/Makefile.
+       * data/push.c (b4_declare_parser_state_variables): Move yyn, yyresult,
+       yytoken, yyval, and yyloc declarations to...
+       (yyparse or yypush_parse): ... here to improve performance.  For
+       yypush_parse invocations after the first, be sure to assign yyn its old
+       value again.
+       (yypstate_new): Don't bother initializing the yyresult field since the
+       initial value isn't used.
+       (yyn, yyresult, yytoken, yyval, yyloc): For each NAME in this list,
+       remove the #define that, in push mode, set it to yyps->NAME.
+       * etc/Makefile.am: New.
+       * etc/bench.pl: Remove and build it instead from...
+       * etc/bench.pl.in: ... this new file.  Use @abs_top_builddir@ to invoke
+       "tests/bison" from the build directory by default rather than just
+       invoking "bison" from $PATH.
+       (calc_grammar): Update push parser code: don't declare yylval globally,
+       don't define yyparse_wrapper, and don't #define yyparse.
+       (bench_grammar): Update to check all working combinations of yacc.c,
+       push.c, impure, pure, pull, and push.
+
+2006-12-25  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+       For push mode, add pull wrappers around yypush_parse.
+       * data/push.c: (b4_generate_macro_args, b4_parenthesize): New macros.
+       (yypull_parse): New function wrapping yypush_parse.
+       (yyparse): New #define wrapping yypull_parse.
+       * tests/calc.at (_AT_DATA_CALC_Y): Call yyparse even when %push-parser
+       is declared.
+       * tests/headers.at (export YYLTYPE): Make yylex global.  For push mode,
+       prototype yylex in the module that calls yyparse, and don't prototype
+       yyparse there.  Otherwise, the yyparse expansion won't compile.
+       * tests/input.at (Torturing the Scanner): Likewise.
+
 2006-12-25  Joel E. Denny  <jdenny@ces.clemson.edu>
 
        Enable push parsers to operate in impure mode.  Thus, %push-parser no