/usr/lib/x86_64-linux-gnu/glibmm-2.4/proc/generate_wrap_init.pl is in libglibmm-2.4-dev 2.42.0-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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#
# tools/generate_wrap_init.pl. Generated from generate_wrap_init.pl.in by configure.
#
use strict;
my @namespace_whole = (); # list of strings.
my $function_prefix = "";
my $parent_dir = ""; # e.g. gtkmm
my $debug = 0;
my %objects = (); # Hashmap of arrays of objects (classes) in each file
my %exceptions = (); # Hashmap of arrays of exception classes in each file
my %conditional_compilation = ();
my %deprecated = ();
my %extra_includes = ();
# Hashmap telling if the registration of the classes in a file should not be
# included in the wrap_init() function. (This is useful for modules such as
# gstreamermm that want to exclude plug-in types from being registered in their
# wrap_init() function.)
my %exclude_from_wrap_init = ();
# The keys in all hashes except %extra_includes are names of header files (xyz.h),
# corresponding to the read .hg files.
#
# The keys in %extra_includes are names of header files to include without reading.
# %extra_includes is a hash rather than a list because we don't want duplicates.
# Its values are not used. In C++ it would have been a std::set.
# $objects{$filename_header} is a reference to an array. That array contains
# references to arrays with two or more elements, ($cppname, $basename, @extra_namespace),
# one reference per object defined in file $filename_header.
# %exceptions has the same structure as %objects.
sub print_with_guards
{
my $file = $_[0];
my $message = $_[1];
if ($deprecated{$file})
{
# The uc(parent_dir) is a bit of a hack. One day it will get it wrong.
print "#ifndef " . uc($parent_dir) ."_DISABLE_DEPRECATED\n"
}
if ($conditional_compilation{$file})
{
print "#$conditional_compilation{$file}\n"
}
print "$message";
if ($conditional_compilation{$file})
{
print "#endif // $conditional_compilation{$file}\n"
}
if ($deprecated{$file})
{
print "#endif // *_DISABLE_DEPRECATED\n"
}
}
# Loop through command line flags, setting variables:
while ($ARGV[0] =~ /^-/)
{
if ($ARGV[0] =~ /--namespace=(\S+)/)
{
push(@namespace_whole, $1);
if($parent_dir eq "")
{ $parent_dir = lc($1) . "mm"; }
}
elsif ($ARGV[0] =~ /--function_prefix=(\S+)/)
{
$function_prefix = "$1";
}
elsif ($ARGV[0] =~ /--parent_dir=(\S+)/)
{
$parent_dir = "$1";
}
elsif ($ARGV[0] =~ /--debug/)
{
$debug = 1;
}
elsif ($ARGV[0] =~ /--path=(\S+)/)
{
# Do nothing. Just for backwards compatibility.
}
else
{
print "Error: unknown option $ARGV[0]\n";
exit;
}
shift @ARGV;
}
# Loop through remaining command line arguments, names of .hg files.
while ($ARGV[0])
{
if ($debug) {warn "Processing file : $ARGV[0]\n";}
my $filename = $ARGV[0];
open FILE, $filename or die "Couldn't open file $filename : $!\n";
# Store header filename, so we can #include it later:
my $filename_header = $filename;
$filename_header =~ s#.*/([^/]+)\.hg#$1.h#;
$conditional_compilation{$filename_header} = "";
$deprecated{$filename_header} = 0;
# Keep track of sub-namespaces, if any.
# Otherwise we can't tell the difference between Gio::Error and Gio::DBus::Error.
my @extra_namespace = ();
while (<FILE>)
{
# Skip comments.
# This is far from foolproof. It only skips one-line comments, and it does
# not try to skip quoted strings.
s#//.*##;
s#/\*.*?\*/##g;
# This is useful when only some classes use a sub-namespace.
# Alternatively, we could parse the namespace start and end parentheses,
# but this hack is easier.
if (/\b_GMMPROC_EXTRA_NAMESPACE\((\w+)\)/)
{
# debug: print "generate_wrap_init: namespace found: $1\n";
push(@extra_namespace, $1);
}
elsif (/\b(_CLASS_GOBJECT|_CLASS_GTKOBJECT|_WRAP_GERROR)\s*\(/)
{
my $type_of_class = $1;
my $line = $_;
while ($line !~ /\)/ && ($_ = <FILE>))
{
$line .= $_;
}
if (!$_)
{
die "Reached end of file $filename in $type_of_class macro. " .
"(No right parenthesis.)\n";
}
$line =~ s/^.*$type_of_class\s*\(//;
$line =~ s/\s+//g;
$line =~ s/\).*//;
my ($cppname, $cname, $ccast) = split(/,/, $line);
my $basename = lc($ccast);
my @names = ($cppname, $basename, @extra_namespace);
if ($type_of_class eq "_CLASS_GOBJECT" or
($type_of_class eq "_CLASS_GTKOBJECT" and
#TODO: Remove this hack eventually.
($cname ne "GtkTree" && $cname ne "GtkTreeItem" && $cname ne "GtkText")))
{
push(@{$objects{$filename_header}}, \@names);
}
elsif ($type_of_class eq "_WRAP_GERROR")
{
push(@{$exceptions{$filename_header}}, \@names);
}
}
elsif (/\b_INCLUDE_IN_WRAP_INIT\((.+)\)/)
{
$extra_includes{$1} = 1;
}
elsif (/\b_GTKMMPROC_WIN32_NO_WRAP\b/)
{
# This file will not be compiled on Win32.
# No extra include is required. If G_OS_WIN32 is defined, it's defined in
# a file included indirectly by glibmm.h.
$conditional_compilation{$filename_header} = "ifndef G_OS_WIN32";
}
elsif (/\b_GMMPROC_WRAP_CONDITIONALLY\((.+)\)/)
{
# The compilation of this file will be controlled by a preprocessor directive.
# Allow m4 quotes in the parameter. There may be cases where the m4 processor
# would misunderstand a parameter without quotes.
my $par = $1;
$par =~ s/^\s*`*\s*//; # Remove m4 quotes and leading and trailing white space.
$par =~ s/\s*'*\s*$//;
$conditional_compilation{$filename_header} = $par;
}
elsif (/\b_IS_DEPRECATED\b/)
{
$deprecated{$filename_header} = 1; # This file is deprecated
}
elsif (/\b_NO_WRAP_INIT_REGISTRATION\b/)
{
$exclude_from_wrap_init{$filename_header} = 1;
}
}
shift @ARGV;
close(FILE);
}
# Print the wrap_init.cc file.
print << "EOF";
// Generated by generate_wrap_init.pl -- DO NOT MODIFY!
#include <glibmm.h>
// Disable the 'const' function attribute of the get_type() functions.
// GCC would optimize them out because we don't use the return value.
#undef G_GNUC_CONST
#define G_GNUC_CONST /* empty */
#include <${parent_dir}/wrap_init.h>
#include <glibmm/error.h>
#include <glibmm/object.h>
EOF
foreach my $filename_header (sort keys %extra_includes)
{
print "#include <$filename_header>\n";
}
print "\n// #include the widget headers so that we can call the get_type() static methods:\n";
# keys %deprecated contains all filenames, not just the names of deprecated files.
foreach my $filename_header (sort keys %deprecated)
{
next if($exclude_from_wrap_init{$filename_header});
print_with_guards($filename_header, "#include \"$filename_header\"\n");
}
# Declarations of glib functions.
print "\nextern \"C\"\n";
print "{\n";
print "//Declarations of the *_get_type() functions:\n\n";
foreach my $filename_header (sort keys %objects)
{
next if($exclude_from_wrap_init{$filename_header});
my @objects_in_file = @{$objects{$filename_header}};
my $message = "";
foreach my $i (@objects_in_file)
{
# $i is a reference to an array with info on one object, declared in file $filename_header.
my $basename = ${$i}[1];
$message .= "GType ${basename}_get_type(void);\n";
}
print_with_guards($filename_header, $message);
}
print "\n//Declarations of the *_error_quark() functions:\n\n";
foreach my $filename_header (sort keys %exceptions)
{
my @exceptions_in_file = @{$exceptions{$filename_header}};
my $message = "";
foreach my $i (@exceptions_in_file)
{
# $i is a reference to an array with info on one exception, declared in file $filename_header.
my $basename = ${$i}[1];
$message .= "GQuark ${basename}_quark(void);\n";
}
print_with_guards($filename_header, $message);
}
print "} // extern \"C\"\n";
print "\n";
my $namespace_whole_declarations = "";
my $namespace_whole_close = "";
foreach (@namespace_whole)
{
$namespace_whole_declarations .= "namespace $_ {\n";
$namespace_whole_close = "} // $_\n$namespace_whole_close";
}
print "$namespace_whole_declarations";
print "\n//Declarations of the *_Class::wrap_new() methods, instead of including all the private headers:\n\n";
foreach my $filename_header (sort keys %objects)
{
next if($exclude_from_wrap_init{$filename_header});
my @objects_in_file = @{$objects{$filename_header}};
my $message = "";
foreach my $i (@objects_in_file)
{
my ($cppname, undef, @extra_namespace) = @{$i};
my $namespace_declarations = "";
my $namespace_close = "";
foreach (@extra_namespace)
{
$namespace_declarations .= "namespace $_ { ";
$namespace_close .= " }";
}
$message .= "${namespace_declarations}class ${cppname}_Class " .
"{ public: static Glib::ObjectBase* wrap_new(GObject*); };$namespace_close\n";
}
print_with_guards($filename_header, $message);
}
# wrap_init() calls throw_func() in each exception class. throw_func() is a
# private method. wrap_init() is declared as a friend of the exception class.
# The friends will find each other easily only if the calling wrap_init()
# function is declared in the same namespace as the exception class.
# If there are extra namespaces, we define extra wrap_init() functions, which
# are called from the wrap_init() function in @namespace_whole.
my %extra_namespaces = ();
foreach my $filename_header (keys %exceptions)
{
my @exceptions_in_file = @{$exceptions{$filename_header}};
foreach my $i (@exceptions_in_file)
{
if (@{$i} > 2)
{
my (undef, undef, @extra_namespace) = @{$i};
$extra_namespaces{join("::", @extra_namespace)} = 1;
}
}
}
# Generate the extra wrap_init() functions in sub-namespaces, if any.
# If you suspect that code with three levels of foreach is inefficient, you are
# probably right, but it's not important here. The exception classes are few in
# most modules (hardly more than about 10), and the sub-namespaces are even
# fewer (usually 0 or 1).
print "\n// Register Error domains in sub-namespaces:\n" if keys %extra_namespaces > 0;
foreach my $sub_namespace (sort keys %extra_namespaces)
{
my @extra_namespace = split("::", $sub_namespace);
my $namespace_declarations = "";
my $namespace_close = "";
foreach (@extra_namespace)
{
$namespace_declarations .= "namespace $_ {\n";
$namespace_close = "} // $_\n$namespace_close";
}
print "\n$namespace_declarations";
print "\nvoid wrap_init()\n{\n";
foreach my $filename_header (sort keys %exceptions)
{
my @exceptions_in_file = @{$exceptions{$filename_header}};
my $message = "";
foreach my $i (@exceptions_in_file)
{
my ($cppname, $basename, @extra_namespace) = @{$i};
if (@extra_namespace > 0 && $sub_namespace eq join("::", @extra_namespace))
{
$message .= " Glib::Error::register_domain(${basename}_quark(), &" .
"${sub_namespace}::${cppname}::throw_func);\n";
}
}
print_with_guards($filename_header, $message) if $message;
}
print "\n} // wrap_init()\n";
print "\n$namespace_close";
}
# Generate namespace::wrap_init() body
print "\nvoid ${function_prefix}wrap_init()\n{\n";
print " // Register Error domains in the main namespace:\n";
foreach my $filename_header (sort keys %exceptions)
{
my @exceptions_in_file = @{$exceptions{$filename_header}};
my $message = "";
foreach my $i (@exceptions_in_file)
{
my ($cppname, $basename, @extra_namespace) = @{$i};
if (@extra_namespace == 0)
{
$message .= " Glib::Error::register_domain(${basename}_quark(), &" .
"${cppname}::throw_func);\n";
}
}
print_with_guards($filename_header, $message) if $message;
}
# Exception classes in sub-namespaces are registered after the ones in the main
# namespace. If you ever change this order, check that it's ok with Glib::ThreadError
# and Glib::Threads::ThreadError. Both these classes wrap GThreadError, and
# Glib::ThreadError is deprecated (2012-02-27).
print "\n // Call the wrap_init() functions in sub-namespaces:\n" if keys %extra_namespaces > 0;
foreach my $sub_namespace (sort keys %extra_namespaces)
{
print " ${sub_namespace}::wrap_init();\n";
}
print "\n";
print " // Map gtypes to gtkmm wrapper-creation functions:\n";
foreach my $filename_header (sort keys %objects)
{
next if($exclude_from_wrap_init{$filename_header});
my @objects_in_file = @{$objects{$filename_header}};
my $message = "";
foreach my $i (@objects_in_file)
{
my ($cppname, $basename, @extra_namespace) = @{$i};
my $qualified_cppname = join("::", (@extra_namespace, $cppname));
$message .= " Glib::wrap_register(${basename}_get_type(), &" .
"${qualified_cppname}_Class::wrap_new);\n";
}
print_with_guards($filename_header, $message);
}
print "\n";
print " // Register the gtkmm gtypes:\n";
foreach my $filename_header (sort keys %objects)
{
next if($exclude_from_wrap_init{$filename_header});
my @objects_in_file = @{$objects{$filename_header}};
my $message = "";
foreach my $i (@objects_in_file)
{
my ($cppname, $basename, @extra_namespace) = @{$i};
my $qualified_cppname = join("::", (@extra_namespace, $cppname));
$message .= " ${qualified_cppname}::get_type();\n"
}
print_with_guards($filename_header, $message);
}
print << "EOF";
} // wrap_init()
$namespace_whole_close
EOF
exit 0;
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