Source code for linkml.utils.ifabsent_functions

import re
from typing import Callable, Optional, Text, List, Tuple, Match

from linkml_runtime.linkml_model.meta import ClassDefinition, SlotDefinition
from linkml_runtime.utils.formatutils import sfx
from linkml.utils.schemaloader import SchemaLoader


[docs]def strval(txt: str) -> str: txt = str(txt).replace('"', '\\"') return f'"{txt}"'
[docs]def default_uri_for(loader: SchemaLoader) -> str: dflt = loader.schema.default_prefix if loader.schema.default_prefix else sfx(loader.schema.id) return sfx(loader.namespaces.uri_for(dflt))
[docs]def default_curie_or_uri(loader: SchemaLoader) -> str: dflt = loader.schema.default_prefix if loader.schema.default_prefix else sfx(loader.schema.id) if ':/' in dflt: prefix = loader.namespaces.prefix_for(loader.schema.default_prefix) if prefix: dflt = prefix return dflt
[docs]def curie_for(loader: SchemaLoader, is_class: bool) -> Optional[str]: """ Return the Curie for the schema in loader. Return None if there is no curie form """ prefix = default_curie_or_uri(loader) suffix = "camelcase(self.name)" if is_class else "underscore(self.alias if self.alias else self.name)" if ':/' not in prefix: return '"' + prefix + ':' + '" + ' + suffix else: pn = loader.namespaces.curie_for(prefix, default_ok=False) return ('"' + pn + '" + ' + suffix) if pn else None
[docs]def uri_for(s: str, loader: SchemaLoader) -> str: uri = str(loader.namespaces.uri_for(s)) return loader.namespaces.curie_for(uri, True, True) or strval(uri)
[docs]def default_ns_for(loader: SchemaLoader, cls: ClassDefinition) -> str: """ Return code to produce the default namespace for the supplied class """ # TODO: figure out how to mark a slot as a namespace return "sfx(str(self.id))" if "id" in cls.slots else "None"
# cls_id = None # for slotname in cls.slots: # slot = loader.schema.slots[slotname] # if slot.identifier: # cls_id = slotname # return f"sfx(str(self.{cls_id}))" if cls_id else "None" # Library of named default values -- this is here to prevent code injection # Contents: Match text (as re), # flag that indicates whether we're generating a default value expression or postinig code # Function that takes the match string, SchemaLoader, ClassDefinition, and SlotDefinition and returns the # appropriate string default_library: List[Tuple[Text, bool, Callable[[Match[str], SchemaLoader, ClassDefinition, SlotDefinition], str]]] = [ (r"[Tt]rue", False, lambda _, __, ___, ____: "True"), (r"[Ff]alse", False, lambda _, __, ___, ____: "False"), (r"int\((-?[1-9][0-9]*)\)", False, lambda m, __, ___, ____: int(m[1])), # TODO: We have to make the real URI available before any of these can work # ("class_uri", True, lambda _, loader, ___, ____: f'"{default_uri_for(loader)}" + camelcase(self.name)'), # ("slot_uri", True, lambda _, loader, ___, ____: f'"{default_uri_for(loader)}" + underscore(self.alias if self.alias else self.name)'), # ("class_curie", True, lambda _, loader, ___, ____: curie_for(loader, True)), # ("slot_curie", True, lambda _, loader, ___, ____: curie_for(loader, False)), ("class_uri", True, lambda _, loader, ___, ____: "None"), ("slot_uri", True, lambda _, loader, ___, ____: "None"), ("class_curie", True, lambda _, loader, ___, ____: "None"), ("slot_curie", True, lambda _, loader, ___, ____: "None"), # TODO: If you assign a range in the constructor, mergeutils has no way of knowing whether the range # was overridden or just defaulted. We need to let the old code continue to work until we get # this bit resolved # ("default_range", False, lambda _, loader, __, ____: f"ElementName({strval(loader.schema.default_range)})"), ("default_range", False, lambda _, __, ___, ____: "None"), ("bnode", False, lambda _, __, ___, ____: "bnode()"), (r"string\((.*)\)", False, lambda m, __, ___, ____: strval(m[1])), (r"uri\((.*)\)", False, lambda m, loader, _, __: uri_for(m[1], loader)), ("default_ns", True, lambda _, loader, cls, ____: default_ns_for(loader, cls)) ]
[docs]def isabsent_match(txt: Text) -> \ Optional[Tuple[Match[str], bool, Callable[[Match[str], SchemaLoader, ClassDefinition, SlotDefinition], str]]]: txt = str(txt) for pattern, postinit, f in default_library: m = re.match(pattern + '$', txt) if m: return m, postinit, f
[docs]def ifabsent_value_declaration(txt: Text, loader, cls, slot) -> Optional[str]: m, postinit, f = isabsent_match(txt) if m and not postinit: return f(m, loader, cls, slot)
[docs]def ifabsent_postinit_declaration(txt: Text, loader, cls, slot) -> Optional[str]: m, postinit, f = isabsent_match(txt) if m and postinit: return f(m, loader, cls, slot)