105 lines
3.7 KiB
Python
105 lines
3.7 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this file,
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# You can obtain one at http://mozilla.org/MPL/2.0/.
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import sys
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import string
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import argparse
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import subprocess
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import buildconfig
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from mozbuild import shellutil
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def get_properties(preprocessorHeader):
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cpp = list(buildconfig.substs['CPP'])
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cpp += shellutil.split(buildconfig.substs['ACDEFINES'])
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cpp.append(preprocessorHeader)
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preprocessed = subprocess.check_output(cpp)
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properties = [{"name":p[0], "prop":p[1], "id":p[2],
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"flags":p[3], "pref":p[4], "proptype":p[5]}
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for (i, p) in enumerate(eval(preprocessed))]
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# Sort the list so that longhand and logical properties are intermingled
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# first, shorthand properties follow, then aliases appear last. This matches
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# the order of the nsCSSPropertyID enum.
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def property_compare(x, y):
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property_order = {"longhand": 0, "logical": 0, "shorthand": 1, "alias": 2}
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return property_order[x["proptype"]] - property_order[y["proptype"]]
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properties = sorted(properties, cmp=property_compare)
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for i, p in enumerate(properties):
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p["index"] = i
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# Record each property's IDL name.
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for p in properties:
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if "CSS_PROPERTY_INTERNAL" in p["flags"]:
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p["idlname"] = None
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else:
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idl_name = p["prop"]
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if not idl_name.startswith("Moz"):
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idl_name = idl_name[0].lower() + idl_name[1:]
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p["idlname"] = idl_name
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return properties
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def generate_idl_names(properties):
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names = []
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for p in properties:
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if p["proptype"] is "alias":
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continue
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if p["idlname"] is None:
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names.append(" nullptr, // %s" % p["name"])
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else:
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names.append(' "%s",' % p["idlname"])
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return "\n".join(names)
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def generate_assertions(properties):
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def enum(p):
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if p["proptype"] is "alias":
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return "eCSSPropertyAlias_%s" % p["prop"]
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else:
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return "eCSSProperty_%s" % p["id"]
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msg = ('static_assert(%s == %d, "GenerateCSSPropsGenerated.py did not list '
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'properties in nsCSSPropertyID order");')
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return "\n".join(map(lambda p: msg % (enum(p), p["index"]), properties))
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def generate_idl_name_positions(properties):
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# Skip aliases.
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ps = filter(lambda p: p["proptype"] is not "alias", properties)
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# Sort alphabetically by IDL name.
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ps = sorted(ps, key=lambda p: p["idlname"])
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# Annotate entries with the sorted position.
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ps = [(p, position) for position, p in enumerate(ps)]
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# Sort back to nsCSSPropertyID order.
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ps = sorted(ps, key=lambda (p, position): p["index"])
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return ",\n".join(map(lambda (p, position): " %d" % position, ps))
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def generate(output, cppTemplate, preprocessorHeader):
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cppFile = open(cppTemplate, "r")
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cppTemplate = cppFile.read()
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cppFile.close()
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properties = get_properties(preprocessorHeader)
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substitutions = {
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"idl_names": generate_idl_names(properties),
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"assertions": generate_assertions(properties),
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"idl_name_positions": generate_idl_name_positions(properties),
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}
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output.write("/* THIS IS AN AUTOGENERATED FILE. DO NOT EDIT */\n\n" +
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string.Template(cppTemplate).substitute(substitutions) + "\n")
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument('cppTemplate', help='CSS property file template')
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parser.add_argument('preprocessorHeader', help='Header file to pass through the preprocessor')
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args = parser.parse_args()
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generate(sys.stdout, args.cppTemplate, args.preprocessorHeader)
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if __name__ == '__main__':
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main()
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