config/make-atom-strings.pl
author Terrence Cole <terrence@mozilla.com>
Tue, 08 Nov 2011 14:54:57 -0800
changeset 82292 646f4a4d58eadad66b17f5e11daa0ac5e7271d40
parent 1 9b2a99adc05e53cd4010de512f50118594756650
child 98529 f4157e8c410708d76703f19e4dfb61859bfe32d8
permissions -rw-r--r--
Bug 696232 - Clean up InitArrayElement's prototype; r=Waldo We should pass the flag value as an enum and return bool, since this is only used internally.

#! perl

# Converts a list of atoms in the form:
# // OUTPUT_CLASS=<classname>
# // MACRO_NAME=<macro>
# <macroname>(atomName, "String")
# <macroname>(atomName2, "String2")
#
# into a file suitable for gperf using static atoms
#
# usage:
# make-atom-strings < file.h > file.gperf
#
# the lines in the C++ comments define two variables:
# OUTPUT_CLASS is the class who has all the atoms as members
# MACRO_NAME is the macro to look for in the rest of the file
#
# for example
# // OUTPUT_CLASS=nsHTMLAtoms
# // MACRO_NAME=HTML_ATOM
# HTML_ATOM(a, "a")
# HTML_ATOM(body, "body")
#
# etc...
#
# this will generate a file that looks like:
# struct nsStaticAtom ( const char* mValue; nsIAtom** aAtom; }
# %%
# "a", &nsHTMLAtoms::a
# "body", &nsHTMLAtoms::body
#
# etc...
#
# the output can be plugged into gperf to generate a perfect hash

print "struct nsStaticAtom {const char* mValue; nsIAtom** aAtom; };\n";
print "%%\n";

my $classname, $macroname;

while (<>) {
  chop;
  if (/OUTPUT_CLASS=(\S+)/) {
    $classname=$1;
  } elsif (/MACRO_NAME=(\S+)/) {
    $macroname=$1;
  }
  elsif ($classname && $macroname &&
         /$macroname\((\S+),\s*\"(.*?)\"\s*\)/) {
    my ($str, $atom) = ($2, $1);
    print "\"$str\", (nsIAtom**)&${classname}::$atom\n";
  }
}