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Diffstat (limited to 'mcon/pl/xref.pl')
| -rw-r--r-- | mcon/pl/xref.pl | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/mcon/pl/xref.pl b/mcon/pl/xref.pl new file mode 100644 index 0000000..f077139 --- /dev/null +++ b/mcon/pl/xref.pl @@ -0,0 +1,70 @@ +;# $Id$ +;# +;# Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi +;# +;# You may redistribute only under the terms of the Artistic Licence, +;# as specified in the README file that comes with the distribution. +;# You may reuse parts of this distribution only within the terms of +;# that same Artistic Licence; a copy of which may be found at the root +;# of the source tree for dist 4.0. +;# +;# $Log: xref.pl,v $ +;# Revision 3.0.1.2 1995/09/25 09:20:05 ram +;# patch59: added empty p_layout stub for new ?Y: directives +;# +;# Revision 3.0.1.1 1993/10/16 13:56:23 ram +;# patch12: declared p_public for ?P: lines +;# +;# Revision 3.0 1993/08/18 12:10:31 ram +;# Baseline for dist 3.0 netwide release. +;# +;# Metaxref-dependent part of the dependency extranction. +;# +# Process the ?W: lines +sub p_wanted { + # Syntax is ?W:<shell symbols>:<C symbols> + local($active) = $_[0] =~ /^([^:]*):/; # Symbols to activate + local($look_symbols) = $_[0] =~ /:(.*)/; # When those are used + local(@syms) = split(/ /, $look_symbols); # Keep original spacing info + $active =~ s/\s+/\n/g; # One symbol per line + + # Concatenate quoted strings, so saying something like 'two words' will + # be introduced as one single symbol "two words". + local(@symbols); # Concatenated symbols to look for + local($concat) = ''; # Concatenation buffer + foreach (@syms) { + if (s/^\'//) { + $concat = $_; + } elsif (s/\'$//) { + push(@symbols, $concat . ' ' . $_); + $concat = ''; + } else { + push(@symbols, $_) unless $concat; + $concat .= ' ' . $_ if $concat; + } + } + + local($fake); # Fake unique shell symbol to reparent C symbol + + # Now record symbols in master and wanted tables + foreach (@symbols) { + $cmaster{$_} = undef; # Asks for look-up in C files + # Make a fake C symbol and associate that with the wanted symbol + # so that later we know were it comes from + $fake = &gensym; + $cwanted{$_} = "$fake"; # Attached to this symbol + push(@Master, "?$unit:$fake=''"); # Fake initialization + } + + delete @cmaster{keys %excluded_symbol}; + delete @cwanted{keys %excluded_symbol}; +} + +# Ingnore the following: +sub p_init {} +sub p_default {} +sub p_library {} +sub p_include {} +sub p_public {} +sub p_layout {} + |