зеркало из https://github.com/mozilla/gecko-dev.git
82 строки
2.5 KiB
Python
82 строки
2.5 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 runpy
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FILE = """/* THIS IS AN AUTOGENERATED FILE. DO NOT EDIT */
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/* processed file that defines entries for nsComputedDOMStyle, designed
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to be #included in nsComputedDOMStyle.cpp */
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static constexpr size_t kEntryIndices[eCSSProperty_COUNT] = {{
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{indices}
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}};
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{asserts}
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static constexpr Entry kEntries[eCSSProperty_COUNT] = {{
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{entries}
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}};
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"""
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def generate(output, dataFile):
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def order_key(p):
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# Put prefixed properties after normal properties.
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# The spec is unclear about this, and Blink doesn't have any sensible
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# order at all, so it probably doesn't matter a lot. But originally
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# Gecko put then later so we do so as well. See w3c/csswg-drafts#2827.
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order = p.name.startswith("-")
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return (order, p.name)
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def has_cpp_getter(p):
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if not "ExposedOnGetCS" in p.flags:
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return False
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if "SerializedByServo" in p.flags:
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return False
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if p.type() == "longhand" and "IsLogical" in p.flags:
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return False
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return True
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def getter_entry(p):
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if has_cpp_getter(p):
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return "DoGet" + p.method
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# Put a dummy getter here instead of nullptr because MSVC seems
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# to have bug which ruins the table when we put nullptr for
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# pointer-to-member-function. See bug 1471426.
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return "DummyGetter"
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properties = runpy.run_path(dataFile)["data"]
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entries = []
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indices = []
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asserts = []
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index_map = {}
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non_aliases = list(filter(lambda p: p.type() != "alias", properties))
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for i, p in enumerate(sorted(non_aliases, key=order_key)):
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can_be_exposed = "true" if "ExposedOnGetCS" in p.flags else "false"
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entries.append(
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"{{ eCSSProperty_{}, {}, &nsComputedDOMStyle::{}}}".format(
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p.id, can_be_exposed, getter_entry(p)
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)
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)
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index_map[p.id] = i
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i += 1
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for i, p in enumerate(non_aliases):
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indices.append(str(index_map[p.id]))
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asserts.append(
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'static_assert(size_t(eCSSProperty_{}) == {}, "");'.format(p.id, i)
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)
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assert len(indices) == len(entries)
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output.write(
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FILE.format(
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indices=", ".join(indices),
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entries=",\n ".join(entries),
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asserts="\n".join(asserts),
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)
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)
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