gecko-dev/layout/style/GenerateComputedDOMStyleGen...

64 строки
2.2 KiB
Python

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this file,
# You can obtain one at http://mozilla.org/MPL/2.0/.
import runpy
def generate(output, dataFile):
output.write("""/* THIS IS AN AUTOGENERATED FILE. DO NOT EDIT */
/* processed file that defines entries for nsComputedDOMStyle, designed
to be #included in nsComputedDOMStyle.cpp */
static constexpr Entry kEntries[] = {
""")
def exposed_on_getcs(p):
return "ExposedOnGetCS" in p.flags
def order_key(p):
# Put prefixed properties after normal properties.
# The spec is unclear about this, and Blink doesn't have any sensible
# order at all, so it probably doesn't matter a lot. But originally
# Gecko put then later so we do so as well. See w3c/csswg-drafts#2827.
order = p.name.startswith("-")
return (order, p.name)
def has_cpp_getter(p):
if "SerializedByServo" in p.flags:
return False
if p.type() == "longhand" and "IsLogical" in p.flags:
return False
return True
# Some special cases we may get rid of later. See bug 1471423.
def method(p):
if p.id.startswith("margin_"):
return "{}Width".format(p.method)
if p.id.startswith("_moz_"):
method = p.method[3:]
else:
method = p.method
if p.id.startswith("_moz_outline_radius_"):
method = method.replace("left", "Left")
method = method.replace("right", "Right")
return method
def getter_entry(p):
if has_cpp_getter(p):
return "DoGet" + method(p)
# Put a dummy getter here instead of nullptr because MSVC seems
# to have bug which ruins the table when we put nullptr for
# pointer-to-member-function. See bug 1471426.
return "DummyGetter"
properties = runpy.run_path(dataFile)["data"]
properties = filter(exposed_on_getcs, properties)
properties.sort(key=order_key)
TEMPLATE = " {{ eCSSProperty_{}, &nsComputedDOMStyle::{} }},\n"
for p in properties:
output.write(TEMPLATE.format(p.id, getter_entry(p)))
output.write("};\n")