# Path: graphscale/check.py
# def isinst(obj: Any, ttype: Type, _msg: str=None) -> None:
# def invariant(condition: Any, msg: str) -> None:
# def failed(msg: str) -> NoReturn:
# 
# Path: graphscale/utils.py
# def is_camel_case(string: str) -> bool:
#     """Is the string potentially camel case? Only checks for capital letters currently"""
#     return bool(re.search('[A-Z]', string))
# 
# def to_snake_case(camel_case: str) -> str:
#     """Convert a camel case string to snake case. e.g. fooBar ==> foo_bar"""
#     with_underscores = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', camel_case)
#     return re.sub('([a-z0-9])([A-Z])', r'\1_\2', with_underscores).lower()


from datetime import datetime
from enum import Enum, auto
from typing import NamedTuple, List, Any, Union
from uuid import UUID
from graphql.language.ast import (
    EnumTypeDefinition, InputObjectTypeDefinition, ListType, NamedType, NonNullType,
    ObjectTypeDefinition, IntValue, StringValue, BooleanValue, Node, TypeDefinition, Value,
    InputValueDefinition, Directive, FieldDefinition, Type
)
from graphql.language.parser import parse
from graphql.language.source import Source
from graphscale import check
from graphscale.utils import is_camel_case, to_snake_case
    ast = parse(Source(grapple_string))
    grapple_types = []
    for type_node in ast.definitions:
        grapple_types.append(create_grapple_type_definition(type_node))
    return GrappleDocument(types=grapple_types)


def has_directive(ast: Node, name: str) -> bool:
    return name in [dir_node.name.value for dir_node in ast.directives]


def get_directive(ast: Node, name: str) -> Directive:
    for dir_node in ast.directives:
        if dir_node.name.value == name:
            check.isinst(dir_node, Directive)
            return dir_node
    return None


def to_python_typename(graphql_type: str) -> str:
    scalars = {
        'ID': UUID,
        'Int': int,
        'Float': float,
        'String': str,
        'Boolean': bool,
        'DateTime': datetime,
    }
    if graphql_type in scalars:
        return scalars[graphql_type].__name__

# Path: graphscale/check.py
# def isinst(obj: Any, ttype: Type, _msg: str=None) -> None:
# def invariant(condition: Any, msg: str) -> None:
# def failed(msg: str) -> NoReturn:
# 
# Path: graphscale/utils.py
# def is_camel_case(string: str) -> bool:
#     """Is the string potentially camel case? Only checks for capital letters currently"""
#     return bool(re.search('[A-Z]', string))
# 
# def to_snake_case(camel_case: str) -> str:
#     """Convert a camel case string to snake case. e.g. fooBar ==> foo_bar"""
#     with_underscores = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', camel_case)
#     return re.sub('([a-z0-9])([A-Z])', r'\1_\2', with_underscores).lower()


# Path: graphscale/grapple/parser.py
from datetime import datetime
from enum import Enum, auto
from typing import NamedTuple, List, Any, Union
from uuid import UUID
from graphql.language.ast import (
    EnumTypeDefinition, InputObjectTypeDefinition, ListType, NamedType, NonNullType,
    ObjectTypeDefinition, IntValue, StringValue, BooleanValue, Node, TypeDefinition, Value,
    InputValueDefinition, Directive, FieldDefinition, Type
)
from graphql.language.parser import parse
from graphql.language.source import Source
from graphscale import check
from graphscale.utils import is_camel_case, to_snake_case

    ast = parse(Source(grapple_string))
    grapple_types = []
    for type_node in ast.definitions:
        grapple_types.append(create_grapple_type_definition(type_node))
    return GrappleDocument(types=grapple_types)


def has_directive(ast: Node, name: str) -> bool:
    return name in [dir_node.name.value for dir_node in ast.directives]


def get_directive(ast: Node, name: str) -> Directive:
    for dir_node in ast.directives:
        if dir_node.name.value == name:
            check.isinst(dir_node, Directive)
            return dir_node
    return None


def to_python_typename(graphql_type: str) -> str:
    scalars = {
        'ID': UUID,
        'Int': int,
        'Float': float,
        'String': str,
        'Boolean': bool,
        'DateTime': datetime,
    }
    if graphql_type in scalars:
        return scalars[graphql_type].__name__

    return graphql_type