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vulkan/enum_to_str: Handle out-of-order aliases

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The current code can only handle enum aliases if the original enum is
declared first followed by the alias as we walk the XML in a linear
fashion.  This commit allows us to handle aliases where the alias
declaration comes before the thing it's aliasing.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
This commit is contained in:
Jason Ekstrand 2019-06-26 13:35:54 -05:00
parent f6aa51103b
commit 121551bfdb
1 changed files with 21 additions and 3 deletions
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24
src/vulkan/util/gen_enum_to_str.py
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@ -258,10 +258,23 @@ class VkEnum(object):
self.values = values or dict()
self.name_to_value = dict()
self.guard = None
self.name_to_alias_list = {}
def add_value(self, name, value=None,
extnum=None, offset=None,
extnum=None, offset=None, alias=None,
error=False):
if alias is not None:
assert value is None and offset is None
if alias not in self.name_to_value:
# We don't have this alias yet. Just record the alias and
# we'll deal with it later.
alias_list = self.name_to_alias_list.get(alias, [])
alias_list.append(name);
return
# Use the value from the alias
value = self.name_to_value[alias]
assert value is not None or extnum is not None
if value is None:
value = 1000000000 + (extnum - 1) * 1000 + offset
@ -274,14 +287,19 @@ class VkEnum(object):
elif len(self.values[value]) > len(name):
self.values[value] = name
# Now that the value has been fully added, resolve aliases, if any.
if name in self.name_to_alias_list:
for alias in self.name_to_alias_list[name]:
add_value(alias, value)
del self.name_to_alias_list[name]
def add_value_from_xml(self, elem, extension=None):
self.extension = extension
if 'value' in elem.attrib:
self.add_value(elem.attrib['name'],
value=int(elem.attrib['value'], base=0))
elif 'alias' in elem.attrib:
self.add_value(elem.attrib['name'],
value=self.name_to_value[elem.attrib['alias']])
self.add_value(elem.attrib['name'], alias=elem.attrib['alias'])
else:
error = 'dir' in elem.attrib and elem.attrib['dir'] == '-'
if 'extnumber' in elem.attrib: