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Use itertools.groupby in generatePrefableArray

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This commit is contained in:
Anthony Ramine 2016-05-20 22:10:31 +02:00
parent b094932d57
commit bee6f59b16
1 changed files with 8 additions and 26 deletions
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34
components/script/dom/bindings/codegen/CodegenRust.py
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@ -5,6 +5,7 @@
# Common codegen classes.
from collections import defaultdict
from itertools import groupby
import operator
import re
@ -1406,37 +1407,18 @@ class PropertyDefiner:
# members while still allowing us to define all the members in the smallest
# number of JSAPI calls.
assert len(array) != 0
# So we won't put a specTerminator at the very front of the list:
lastCondition = getCondition(array[0], self.descriptor)
specs = []
currentSpecs = []
prefableSpecs = []
prefableTemplate = ' Prefable { pref: %s, specs: %s[%d], terminator: %s }'
hasTerminator = 'true' if specTerminator else 'false'
def switchToCondition(props, condition):
prefableSpecs.append(prefableTemplate %
(condition,
name + "_specs",
len(specs),
'true' if specTerminator else 'false'))
for cond, members in groupby(array, lambda m: getCondition(m, self.descriptor)):
currentSpecs = [specTemplate % getDataTuple(m) for m in members]
if specTerminator:
currentSpecs.append(specTerminator)
specs.append("&[\n" + ",\n".join(currentSpecs) + "]\n")
del currentSpecs[:]
for member in array:
curCondition = getCondition(member, self.descriptor)
if lastCondition != curCondition:
# Terminate previous list
if specTerminator:
currentSpecs.append(specTerminator)
# And switch to our new pref
switchToCondition(self, lastCondition)
lastCondition = curCondition
# And the actual spec
currentSpecs.append(specTemplate % getDataTuple(member))
if specTerminator:
currentSpecs.append(specTerminator)
switchToCondition(self, lastCondition)
prefableSpecs.append(
prefableTemplate % (cond, name + "_specs", len(specs) - 1, hasTerminator))
specsArray = ("const %s_specs: &'static [&'static[%s]] = &[\n" +
",\n".join(specs) + "\n" +