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"""Utility functions not closely tied to other spec_tools types."""
# Copyright 2018-2019 Collabora, Ltd.
# Copyright 2013-2022 The Khronos Group Inc.
#
# SPDX-License-Identifier: Apache-2.0
def getElemName(elem, default=None):
"""Get the name associated with an element, either a name child or name attribute."""
name_elem = elem.find('name')
if name_elem is not None:
return name_elem.text
# Fallback if there is no child.
return elem.get('name', default)
def getElemType(elem, default=None):
"""Get the type associated with an element, either a type child or type attribute."""
type_elem = elem.find('type')
if type_elem is not None:
return type_elem.text
# Fallback if there is no child.
return elem.get('type', default)
def findFirstWithPredicate(collection, pred):
"""Return the first element that satisfies the predicate, or None if none exist.
NOTE: Some places where this is used might be better served by changing to a dictionary.
"""
for elt in collection:
if pred(elt):
return elt
return None
def findNamedElem(elems, name):
"""Traverse a collection of elements with 'name' nodes or attributes, looking for and returning one with the right name.
NOTE: Many places where this is used might be better served by changing to a dictionary.
"""
return findFirstWithPredicate(elems, lambda elem: getElemName(elem) == name)
def findTypedElem(elems, typename):
"""Traverse a collection of elements with 'type' nodes or attributes, looking for and returning one with the right typename.
NOTE: Many places where this is used might be better served by changing to a dictionary.
"""
return findFirstWithPredicate(elems, lambda elem: getElemType(elem) == typename)
def findNamedObject(collection, name):
"""Traverse a collection of elements with 'name' attributes, looking for and returning one with the right name.
NOTE: Many places where this is used might be better served by changing to a dictionary.
"""
return findFirstWithPredicate(collection, lambda elt: elt.name == name)
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