X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/f10e19fd1a546ee6b79947c6de86ad7f118a6686..5679f31101d0bc5aab6adbce37212b2fdedd32cd:/etc/bench.pl.in?ds=inline diff --git a/etc/bench.pl.in b/etc/bench.pl.in index f71611f0..f8fca8ac 100755 --- a/etc/bench.pl.in +++ b/etc/bench.pl.in @@ -23,18 +23,22 @@ bench.pl - bench marks for Bison parsers. =head1 SYNOPSIS - ./bench.pl [OPTIONS]... I + ./bench.pl [OPTIONS]... DIRECTIVES =head1 DIRECTIVES Specify the set of benches to run. The following grammar defines the I: - I ::= I | I -- Alternation - | I & I -- Concatenation - | [ I ] -- Optional - | ( I ) -- Parentheses - | I + directives ::= + directives | directives -- Alternation + | directives & directives -- Concatenation + | [ directives> ] -- Optional + | ( directives> ) -- Parentheses + | #d NAME[=VALUE] -- %code { #define NAME [VALUE] } + | %d NAME[=VALUE] -- %define NAME ["VALUE"] + | %s skeleton -- %skeleton "skeleton" + | directive Parentheses only group to override precedence. For instance: @@ -575,13 +579,14 @@ sub generate_grammar_list ($$@) { my ($base, $max, @directive) = @_; my $directives = directives ($base, @directive); - my $variant = grep { $_ eq '%define variant' } @directive; - + my $variant = grep { /%define "?variant"?/ } @directive; + my $lex_symbol = grep { /%define "?lex_symbol"?/ } @directive; my $out = new IO::File ">$base.y" or die; print $out < #include -// Prototype of the yylex function providing subsequent tokens. -static yy::parser::token_type yylex(yy::parser::semantic_type* yylval); - #define STAGE_MAX ($max * 10) // max = $max + +#define USE_LEX_SYMBOL $lex_symbol #define USE_VARIANTS $variant -#if USE_VARIANTS -# define IF_VARIANTS(True, False) True + + // Prototype of the yylex function providing subsequent tokens. + static +#if USE_LEX_SYMBOL + yy::parser::symbol_type yylex(); #else -# define IF_VARIANTS(True, False) False + yy::parser::token_type yylex(yy::parser::semantic_type* yylval, + yy::parser::location_type* yylloc); #endif + + // Conversion to string. + template + inline + std::string + string_cast (const T& t) + { + std::ostringstream o; + o << t; + return o.str (); + } } + +%token END_OF_FILE 0 EOF if ($variant) @@ -615,7 +636,6 @@ EOF %token NUMBER %printer { std::cerr << "Number: " << $$; } %printer { std::cerr << "Text: " << $$; } -%token END_OF_FILE 0 %type text result %% @@ -625,13 +645,8 @@ result: text: /* nothing */ { /* This will generate an empty string */ } -| text TEXT { std::swap($$,$1); $$.append($2); } -| text NUMBER { - std::swap($$,$1); - std::ostringstream ss; - ss << ' ' << $2; - $$.append(ss.str()); - } +| text TEXT { std::swap ($$, $2); } +| text NUMBER { $$ = string_cast($2); } ; EOF } @@ -644,7 +659,6 @@ EOF %token NUMBER %printer { std::cerr << "Number: " << $$; } %printer { std::cerr << "Text: " << *$$; } -%token END_OF_FILE 0 %type text result %% @@ -654,35 +668,71 @@ result: text: /* nothing */ { $$ = new std::string; } -| text TEXT { $$->append(*$2); delete $2; } -| text NUMBER { - std::ostringstream ss; - ss << ' ' << $2; - $$->append(ss.str()); - } +| text TEXT { delete $1; $$ = $2; } +| text NUMBER { delete $1; $$ = new std::string (string_cast ($2)); } ; EOF } print $out <<'EOF'; %% +# + static -yy::parser::token_type -yylex(yy::parser::semantic_type* yylval) +#if USE_LEX_SYMBOL +yy::parser::symbol_type yylex() +#else +yy::parser::token_type yylex(yy::parser::semantic_type* yylval, + yy::parser::location_type* yylloc) +#endif { + typedef yy::parser::token token; static int stage = -1; ++stage; if (stage == STAGE_MAX) - return yy::parser::token::END_OF_FILE; + { +#if USE_LEX_SYMBOL + return yy::parser::make_symbol (yy::location()); +#else + *yylloc = yy::location (); + return token::END_OF_FILE; +#endif + } else if (stage % 2) { - IF_VARIANTS(yylval->build(), yylval->ival) = stage; - return yy::parser::token::NUMBER; +#if USE_LEX_SYMBOL + return yy::parser::make_symbol (stage, yy::location()); +#elif defined ONE_STAGE_BUILD + yylval->build(stage); + *yylloc = yy::location (); + return token::NUMBER; +#elif USE_VARIANTS + yylval->build() = stage; + *yylloc = yy::location (); + return token::NUMBER; +#else + yylval->ival = stage; + *yylloc = yy::location (); + return token::NUMBER; +#endif } else { - IF_VARIANTS(yylval->build() =, yylval->sval = new) std::string("A string."); - return yy::parser::token::TEXT; +#if USE_LEX_SYMBOL + return yy::parser::make_symbol ("A string.", yy::location()); +#elif defined ONE_STAGE_BUILD + yylval->build(std::string("A string.")); + *yylloc = yy::location (); + return token::TEXT; +#elif USE_VARIANTS + yylval->build() = std::string("A string."); + *yylloc = yy::location (); + return token::TEXT; +#else + yylval->sval = new std::string("A string."); + *yylloc = yy::location (); + return token::TEXT; +#endif } abort(); } @@ -718,7 +768,7 @@ Generate F<$base.y> by calling C<&generate_grammar_$name>. sub generate_grammar ($$@) { my ($name, $base, @directive) = @_; - verbose 2, "Generating $base.y\n"; + verbose 3, "Generating $base.y\n"; my %generator = ( "calc" => \&generate_grammar_calc, @@ -739,7 +789,7 @@ Run, possibly verbosely, the shell C<$command>. sub run ($) { my ($command) = @_; - verbose 2, "$command\n"; + verbose 3, "$command\n"; system ("$command") == 0 or die "$command failed"; } @@ -813,7 +863,7 @@ sub bench ($@) # shows only wallclock and the two children times. 'auto' (the # default) will act as 'all' unless the children times are both # zero, in which case it acts as 'noc'. 'none' prevents output. - verbose 2, "Running the benches for $grammar\n"; + verbose 3, "Running the benches for $grammar\n"; my $res = timethese ($iterations, \%bench, 'nop'); # Output the speed result. @@ -847,10 +897,10 @@ interfaces. sub bench_push_parser () { bench ('calc', - ( - '[', '%define api.pure', ']', - '&', - '[', '%define api.push_pull "both"', ']' + qw( + [ %d api.pure ] + & + [ %d api.push_pull=both ] )); } @@ -858,21 +908,21 @@ sub bench_push_parser () =item C -Bench the C++ lalr1.cc parser using Boost.Variants or %union. +Bench the C++ lalr1.cc parser using variants or %union. =cut sub bench_variant_parser () { - bench ('variant', - ('%skeleton "lalr1.cc"', - '&', - '[', '%debug', ']', - '&', - '[', '%define variant', ']', - '&', - '[', "%code {\n#define VARIANT_DESTROY\n}", ']' - )); + bench ('list', + qw( + [ + %d variant + & + [ #d ONE_STAGE_BUILD | %d lex_symbol ] + ] + ) + ); } ###################################################################### @@ -886,9 +936,12 @@ Bench the C++ lalr1.cc parser using Boost.Variants or %union. sub bench_fusion_parser () { bench ('list', - ('%skeleton "lalr1-split.cc"', - '|', - '%skeleton "lalr1.cc"')); + qw( + %s lalr1-split.cc + | + %s lalr1.cc + ) + ); } ############################################################################ @@ -906,26 +959,42 @@ sub help ($) ###################################################################### +# The end of the directives to parse. +my $eod = "end of directives"; # The list of tokens parsed by the following functions. my @token; +# eat ($EXPECTED) +# --------------- +# Check that the current token is $EXPECTED, and move to the next. +sub eat ($) +{ + my ($expected) = @_; + die "expected $expected, unexpected: $token[0] (@token)\n" + unless $token[0] eq $expected; + shift @token; +} + # Parse directive specifications: # expr: term (| term)* # term: fact (& fact)* # fact: ( expr ) | [ expr ] | dirs +# dirs: %s SKELETON | #d NAME[=VALUE] | %d NAME[=VALUE] | directive sub parse (@) { - @token = @_; - verbose 2, "Parsing: @token\n"; - return parse_expr (); + @token = (@_, $eod); + verbose 3, "Parsing: @token\n"; + my @res = parse_expr (); + eat ($eod); + return @res; } sub parse_expr () { my @res = parse_term (); - while (defined $token[0] && $token[0] eq '|') + while ($token[0] eq '|') { - shift @token; + eat ('|'); # Alternation. push @res, parse_term (); } @@ -935,9 +1004,9 @@ sub parse_expr () sub parse_term () { my @res = parse_fact (); - while (defined $token[0] && $token[0] eq '&') + while ($token[0] eq '&') { - shift @token; + eat ('&'); # Cartesian product. my @lhs = @res; @res = (); @@ -945,7 +1014,7 @@ sub parse_term () { for my $lhs (@lhs) { - push @res, "$lhs\n$rhs"; + push @res, $lhs . ($lhs && $rhs ? "\n" : "") . $rhs; } } } @@ -960,18 +1029,47 @@ sub parse_fact () if ($token[0] eq '(') { - shift @token; + eat ('('); @res = parse_expr (); - die "unexpected $token[0], expected )" - unless $token[0] eq ')'; - shift @token; + eat (')'); } elsif ($token[0] eq '[') { - shift @token; + eat ('['); @res = (parse_expr (), ''); - die "unexpected $token[0], expected ]" - unless $token[0] eq ']'; + eat (']'); + } + else + { + @res = parse_dirs (); + } + return @res; +} + +sub parse_dirs () +{ + my @res; + die "unexpected end of expression" + unless defined $token[0]; + + if ($token[0] eq '#d') + { + eat ('#d'); + $token[0] =~ s/(.*?)=(.*)/$1 $2/; + @res = ("%code {\n#define $token[0]\n}"); + shift @token; + } + elsif ($token[0] eq '%d') + { + shift @token; + $token[0] =~ s/(.*?)=(.*)/$1 "$2"/; + @res = ("%define $token[0]"); + shift @token; + } + elsif ($token[0] eq '%s') + { + shift @token; + @res = ("%skeleton \"$token[0]\""); shift @token; } else @@ -979,6 +1077,7 @@ sub parse_fact () @res = $token[0]; shift @token; } + return @res; } @@ -1000,36 +1099,53 @@ sub getopt () Getopt::Long::Configure ("bundling", "pass_through"); GetOptions (%option) or exit 1; - - # Support -b: predefined benches. - my %bench = - ( - "fusion" => \&bench_fusion_parser, - "push" => \&bench_push_parser, - "variant" => \&bench_variant_parser, - ); - - if (defined $bench) - { - die "invalid argument for --bench: $bench" - unless defined $bench{$bench}; - &{$bench{$bench}}(); - exit 0; - } } ###################################################################### getopt; + +# Create the directory we work in. +mkdir "benches" or die "cannot create benches" + unless -d "benches"; +my $count = 1; +++$count + while -d "benches/$count"; +my $dir = "benches/$count"; +mkdir $dir + or die "cannot create $dir"; +chdir $dir + or die "cannot chdir $dir"; + +# The following message is tailored to please Emacs' compilation-mode. +verbose 1, "Entering directory `$dir'\n"; verbose 1, "Using bison=$bison.\n"; -verbose 1, "Using cc=$cc.\n"; -verbose 1, "Using cxx=$cxx.\n"; -verbose 1, "Using cflags=$cflags.\n"; +verbose 2, "Using cc=$cc.\n"; +verbose 2, "Using cxx=$cxx.\n"; +verbose 2, "Using cflags=$cflags.\n"; verbose 2, "Grammar: $grammar\n"; -# Launch the bench marking. -bench ($grammar, @ARGV); +# Support -b: predefined benches. +my %bench = + ( + "fusion" => \&bench_fusion_parser, + "push" => \&bench_push_parser, + "variant" => \&bench_variant_parser, + ); + +if (defined $bench) +{ + die "invalid argument for --bench: $bench" + unless defined $bench{$bench}; + &{$bench{$bench}}(); + exit 0; +} +else +{ + # Launch the bench marking. + bench ($grammar, @ARGV); +} ### Setup "GNU" style for perl-mode and cperl-mode. ## Local Variables: