def pprint_validation_error()

in glean_parser/util.py [0:0]

• 28 lines of code
• 8 McCabe index (conditional complexity)

def pprint_validation_error(error) -> str:
    """
    A version of jsonschema's ValidationError __str__ method that doesn't
    include the schema fragment that failed.  This makes the error messages
    much more succinct.

    It also shows any subschemas of anyOf/allOf that failed, if any (what
    jsonschema calls "context").
    """
    essential_for_verbose = (
        error.validator,
        error.validator_value,
        error.instance,
        error.schema,
    )
    if any(m is _unset for m in essential_for_verbose):
        return textwrap.fill(error.message)

    instance = error.instance
    for path in list(error.relative_path)[::-1]:
        if isinstance(path, str):
            instance = {path: instance}
        else:
            instance = [instance]

    yaml_instance = ordered_yaml_dump(instance, width=72, default_flow_style=False)

    parts = ["```", yaml_instance.rstrip(), "```", "", textwrap.fill(error.message)]
    if error.context:
        parts.extend(
            textwrap.fill(x.message, initial_indent="    ", subsequent_indent="    ")
            for x in error.context
        )

    description = error.schema.get("description")
    if description:
        parts.extend(
            ["", "Documentation for this node:", textwrap.indent(description, "    ")]
        )

    return "\n".join(parts)