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Add some comments; some whitespace changes
git-svn-id: https://glew.svn.sourceforge.net/svnroot/glew/trunk/glew@276 783a27ee-832a-0410-bc00-9f386506c6dd
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mem
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@ -110,30 +110,30 @@ my %fnc_ignore_list = (
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);
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);
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my %regex = (
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my %regex = (
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eofnc => qr/(?:\);?$|^$)/, # ); $|^$
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eofnc => qr/(?:\);?$|^$)/, # )$ | );$ | ^$
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extname => qr/^[A-Z][A-Za-z0-9_]+$/,
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extname => qr/^[A-Z][A-Za-z0-9_]+$/,
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function => qr/^(.+) ([a-z][a-z0-9_]*) \((.+)\)$/i,
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function => qr/^(.+) ([a-z][a-z0-9_]*) \((.+)\)$/i,
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prefix => qr/^(?:[aw]?gl|glX)/, # (agl,wgl,glX) + cluster wo/ capturing
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prefix => qr/^(?:[aw]?gl|glX)/, # gl | agl | wgl | glX
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tprefix => qr/^(?:[AW]?GL|GLX)_/, # (AGL,WGL,GLX) + cluster wo/ capturing
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tprefix => qr/^(?:[AW]?GL|GLX)_/, # GL_ | AGL_ | WGL_ | GLX_
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section => compile_regex('^(', join('|', @sections), ')$'), # sections in spec
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section => compile_regex('^(', join('|', @sections), ')$'), # sections in spec
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token => qr/^([A-Z0-9][A-Z0-9_]*):?\s+((?:0x)?[0-9A-F]+)(.*)$/, # define tokens
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token => qr/^([A-Z0-9][A-Z0-9_]*):?\s+((?:0x)?[0-9A-F]+)(.*)$/, # define tokens
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types => compile_regex('\b(', join('|', keys %typemap), ')\b'), # var types
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types => compile_regex('\b(', join('|', keys %typemap), ')\b'), # var types
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voidtype => compile_regex('\b(', keys %voidtypemap, ')\b '), # void type
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voidtype => compile_regex('\b(', keys %voidtypemap, ')\b '), # void type
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);
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);
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# reshapes the the function declaration from multiline to single line form
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# reshapes the the function declaration from multiline to single line form
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sub normalize_prototype
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sub normalize_prototype
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{
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{
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my $fnc = join(" ", @_);
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local $_ = join(" ", @_);
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$fnc =~ s/\s+/ /g;
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s/\s+/ /g; # multiple whitespace -> single space
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$fnc =~ s/\s*\(\s*/ \(/;
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s/\s*\(\s*/ \(/; # exactly one space before ( and none after
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$fnc =~ s/\s*\)\s*/\)/;
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s/\s*\)\s*/\)/; # no after before or after )
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$fnc =~ s/\s*\*([a-zA-Z])/\* $1/;
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s/\s*\*([a-zA-Z])/\* $1/; # "* identifier"
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$fnc =~ s/\*wgl/\* wgl/;
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s/\*wgl/\* wgl/; # "* wgl"
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$fnc =~ s/\*glX/\* glX/;
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s/\*glX/\* glX/; # "* glX"
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$fnc =~ s/\.\.\./void/;
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s/\.\.\./void/; # ... -> void
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$fnc =~ s/;$//;
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s/;$//; # remove ; at the end of the line
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return $fnc;
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return $_;
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}
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}
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# Ugly hack to work arround the fact that functions are declared in more
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# Ugly hack to work arround the fact that functions are declared in more
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@ -165,47 +165,53 @@ sub parse_spec($)
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},
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},
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"Name Strings" => sub {
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"Name Strings" => sub {
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# Add extension name to extension list
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# Add extension name to extension list
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# Does this look even plausible?
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# Does this look even plausible?
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push @extnames, $_ if (/$regex{extname}/)
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if (/$regex{extname}/)
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{
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# prefix with "GL_" if prefix not present
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s/^/GL_/ unless /$regex{tprefix}/o;
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# Add extension name to extension list
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push @extnames, $_;
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}
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},
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},
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"New Procedures and Functions" => sub {
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"New Procedures and Functions" => sub {
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# if line matches end of function
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# if line matches end of function
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if (/$regex{eofnc}/)
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if (/$regex{eofnc}/)
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{
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{
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# add line to function list
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# add line to function declaration
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push @fnc, $_;
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push @fnc, $_;
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# my $f = normalize_prototype(@fnc);
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# if normalized version of function looks like a function
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# print STDERR "$f\n";
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# if normalized version of function looks like a function
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if (normalize_prototype(@fnc) =~ /$regex{function}/)
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if (normalize_prototype(@fnc) =~ /$regex{function}/)
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{
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{
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# get return type, name, and arguments, add them to functions hash
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# get return type, name, and arguments from regex
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my ($return, $name, $parms) = ($1, $2, $3);
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my ($return, $name, $parms) = ($1, $2, $3);
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# print STDERR "$1 | $2 | $3\n";
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if (!ignore_function($name, $extname))
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if (!ignore_function($name, $extname))
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{
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{
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# prefix with "gl" if prefix not present
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$name =~ s/^/gl/ unless $name =~ /$regex{prefix}/;
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$name =~ s/^/gl/ unless $name =~ /$regex{prefix}/;
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if ($name =~ /^gl/ && $name !~ /^glX/)
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# is this a pure GL function?
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{
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if ($name =~ /^gl/ && $name !~ /^glX/)
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$return =~ s/$regex{types}/$typemap{$1}/og;
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{
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$return =~ s/void\*/GLvoid */og;
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# apply typemaps
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$parms =~ s/$regex{types}/$typemap{$1}/og;
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$return =~ s/$regex{types}/$typemap{$1}/og;
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$parms =~ s/$regex{voidtype}/$voidtypemap{$1}/og;
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$return =~ s/void\*/GLvoid */og;
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}
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$parms =~ s/$regex{types}/$typemap{$1}/og;
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$parms =~ s/$regex{voidtype}/$voidtypemap{$1}/og;
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}
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# add to functions hash
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$functions{$name} = {
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$functions{$name} = {
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rtype => $return,
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rtype => $return,
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parms => $parms,
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parms => $parms,
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};
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};
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}
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}
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}
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}
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# reset function list
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# reset function declaration
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@fnc = ();
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@fnc = ();
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} elsif ($_ ne "" and $_ ne "None") {
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} elsif ($_ ne "" and $_ ne "None") {
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# if not eof, add line to function list
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# if not eof, add line to function declaration
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push @fnc, $_
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push @fnc, $_
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}
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}
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},
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},
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@ -214,16 +220,15 @@ sub parse_spec($)
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if (/$regex{token}/)
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if (/$regex{token}/)
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{
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{
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my ($name, $value) = ($1, $2);
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my ($name, $value) = ($1, $2);
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#print STDERR "TOKEN: $1 | $2\n";
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# prefix with "GL_" if prefix not present
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# Prepend name with GL_, unless it is already prepended
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$name =~ s/^/GL_/ unless $name =~ /$regex{tprefix}/;
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$name =~ s/^/GL_/ unless $name =~ /$regex{tprefix}/;
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# Add (name, value) pair to tokens hash, unless it's in taboo_tokens
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# Add (name, value) pair to tokens hash, unless it's taboo
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$tokens{$name} = $value unless exists $taboo_tokens{$name};
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$tokens{$name} = $value unless exists $taboo_tokens{$name};
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}
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}
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},
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},
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);
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);
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# Some people can't read
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# Some people can't read, the template clearly says "Name String_s_"
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$proc{"Name String"} = $proc{"Name Strings"};
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$proc{"Name String"} = $proc{"Name Strings"};
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# Open spec file
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# Open spec file
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@ -232,21 +237,20 @@ sub parse_spec($)
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# For each line of SPEC
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# For each line of SPEC
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while(<SPEC>)
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while(<SPEC>)
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{
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{
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# Delete trailing newline character
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# Delete trailing newline character
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chomp;
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chomp;
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# Remove trailing white spaces
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# Remove trailing white spaces
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s/\s+$//;
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s/\s+$//;
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# If starts with a capital letter, it must be a new section
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# If starts with a capital letter, it must be a new section
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if (/^[A-Z]/)
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if (/^[A-Z]/)
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{
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{
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# Match section name with one of the predefined names
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# Match section name with one of the predefined names
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$section = /$regex{section}/ ? $1 : "default";
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$section = /$regex{section}/o ? $1 : "default";
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} else {
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} else {
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# If it's an internal line to a section, call the
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# Line is internal to a section
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# appropriate section processing function if it exists
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# Remove leading whitespace
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# Remove whitespaces from the beginning of the line
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s/^\s+//;
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s/^\s+//;
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# Call appropriate section processing function if it exists
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# Call appropriate processing function
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&{$proc{$section}} if exists $proc{$section};
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&{$proc{$section}} if exists $proc{$section};
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}
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}
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}
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}
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@ -279,27 +283,27 @@ foreach my $spec (sort @speclist)
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foreach my $ext (@{$extnames})
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foreach my $ext (@{$extnames})
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{
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{
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my $info = "$ext_dir/" . $ext;
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my $info = "$ext_dir/" . $ext;
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open EXT, ">$info";
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open EXT, ">$info";
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print EXT $ext . "\n";
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print EXT $ext . "\n";
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print EXT $reg_http . $spec . "\n";
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print EXT $reg_http . $spec . "\n";
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my $prefix = $ext;
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my $prefix = $ext;
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$prefix =~ s/^(.+?)(_.+)$/$1/;
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$prefix =~ s/^(.+?)(_.+)$/$1/;
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foreach my $token (sort { hex ${$tokens}{$a} <=> hex ${$tokens}{$b} } keys %{$tokens})
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foreach my $token (sort { hex ${$tokens}{$a} <=> hex ${$tokens}{$b} } keys %{$tokens})
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{
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{
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if ($token =~ /^$prefix.*/i)
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if ($token =~ /^$prefix.*/i)
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{
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{
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print EXT "\t" . $token . " " . ${%{$tokens}}{$token} . "\n";
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print EXT "\t" . $token . " " . ${%{$tokens}}{$token} . "\n";
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}
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}
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}
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}
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foreach my $function (sort keys %{$functions})
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foreach my $function (sort keys %{$functions})
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{
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{
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if ($function =~ /^$prefix.*/i)
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if ($function =~ /^$prefix.*/i)
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{
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{
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print EXT "\t" . ${$functions}{$function}{rtype} . " " . $function . " (" . ${$functions}{$function}{parms} . ")" . "\n";
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print EXT "\t" . ${$functions}{$function}{rtype} . " " . $function . " (" . ${$functions}{$function}{parms} . ")" . "\n";
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}
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}
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}
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}
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close EXT;
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close EXT;
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}
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}
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}
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}
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