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import pprint
from stone.ir import (
Boolean,
Bytes,
Float32,
Float64,
Int32,
Int64,
List,
Map,
String,
Timestamp,
UInt32,
UInt64,
Void,
is_struct_type,
is_boolean_type,
is_list_type,
is_map_type,
is_numeric_type,
is_string_type,
is_tag_ref,
is_user_defined_type,
unwrap_nullable,
)
from .helpers import split_words
# This file defines *stylistic* choices for Swift
# (ie, that class names are UpperCamelCase and that variables are lowerCamelCase)
_type_table = {
Boolean: 'Bool',
Bytes: 'Data',
Float32: 'Float',
Float64: 'Double',
Int32: 'Int32',
Int64: 'Int64',
List: 'Array',
Map: 'Dictionary',
String: 'String',
Timestamp: 'Date',
UInt32: 'UInt32',
UInt64: 'UInt64',
Void: 'Void',
}
_objc_type_table = {
Boolean: 'NSNumber',
Bytes: 'Data',
Float32: 'NSNumber',
Float64: 'NSNumber',
Int32: 'NSNumber',
Int64: 'NSNumber',
List: 'Array',
Map: 'Dictionary',
String: 'String',
Timestamp: 'Date',
UInt32: 'NSNumber',
UInt64: 'NSNumber',
Void: '',
}
_reserved_words = {
'description',
'bool',
'nsdata'
'float',
'double',
'int32',
'int64',
'list',
'string',
'timestamp',
'uint32',
'uint64',
'void',
'associatedtype',
'class',
'deinit',
'enum',
'extension',
'func',
'import',
'init',
'inout',
'internal',
'let',
'operator',
'private',
'protocol',
'public',
'static',
'struct',
'subscript',
'typealias',
'var',
'default',
'hash',
'client',
}
def fmt_obj(o):
assert not isinstance(o, dict), "Only use for base type literals"
if o is True:
return 'true'
if o is False:
return 'false'
if o is None:
return 'nil'
if o == '':
return '""'
elif isinstance(o, str):
return '"{}"'.format(o)
return pprint.pformat(o, width=1)
def _format_camelcase(name, lower_first=True):
words = [word.capitalize() for word in split_words(name)]
if lower_first:
words[0] = words[0].lower()
ret = ''.join(words)
if ret.lower() in _reserved_words:
ret += '_'
return ret
def fmt_class(name):
return _format_camelcase(name, lower_first=False)
def fmt_func(name, version):
if version > 1:
name = '{}_v{}'.format(name, version)
name = _format_camelcase(name)
return name
def fmt_type(data_type):
data_type, nullable = unwrap_nullable(data_type)
if is_user_defined_type(data_type):
result = '{}.{}'.format(fmt_class(data_type.namespace.name),
fmt_class(data_type.name))
else:
result = _type_table.get(data_type.__class__, fmt_class(data_type.name))
if is_list_type(data_type):
result = result + '<{}>'.format(fmt_type(data_type.data_type))
if is_map_type(data_type):
result = result + '<{}, {}>'.format(fmt_type(data_type.key_data_type),
fmt_type(data_type.value_data_type))
return result if not nullable else result + '?'
def fmt_objc_type(data_type, allow_nullable=True):
data_type, nullable = unwrap_nullable(data_type)
if is_user_defined_type(data_type):
result = 'DBX{}{}'.format(fmt_class(data_type.namespace.name),
fmt_class(data_type.name))
else:
result = _objc_type_table.get(data_type.__class__, fmt_class(data_type.name))
if is_list_type(data_type):
result = result + '<{}>'.format(fmt_objc_type(data_type.data_type, False))
elif is_map_type(data_type):
result = result + '<String, {}>'.format(fmt_objc_type(data_type.value_data_type))
return result if not nullable or not allow_nullable else result + '?'
def fmt_var(name):
return _format_camelcase(name)
def fmt_default_value(field):
if is_tag_ref(field.default):
return '{}.{}Serializer().serialize(.{})'.format(
fmt_class(field.default.union_data_type.namespace.name),
fmt_class(field.default.union_data_type.name),
fmt_var(field.default.tag_name))
elif is_list_type(field.data_type):
return '.array({})'.format(field.default)
elif is_numeric_type(field.data_type):
return '.number({})'.format(field.default)
elif is_string_type(field.data_type):
return '.str({})'.format(fmt_obj(field.default))
elif is_boolean_type(field.data_type):
if field.default:
bool_str = '1'
else:
bool_str = '0'
return '.number({})'.format(bool_str)
else:
raise TypeError('Can\'t handle default value type %r' %
type(field.data_type))
def fmt_route_name(route):
if route.version == 1:
return route.name
else:
return '{}_v{}'.format(route.name, route.version)
def fmt_route_name_namespace(route, namespace_name):
return '{}/{}'.format(namespace_name, fmt_route_name(route))
def fmt_func_namespace(name, version, namespace_name):
return '{}_{}'.format(namespace_name, fmt_func(name, version))
def check_route_name_conflict(namespace):
"""
Check name conflicts among generated route definitions. Raise a runtime exception when a
conflict is encountered.
"""
route_by_name = {}
for route in namespace.routes:
route_name = fmt_func(route.name, route.version)
if route_name in route_by_name:
other_route = route_by_name[route_name]
raise RuntimeError(
'There is a name conflict between {!r} and {!r}'.format(other_route, route))
route_by_name[route_name] = route
def mapped_list_info(data_type):
list_data_type, list_nullable = unwrap_nullable(data_type.data_type)
list_depth = 0
while is_list_type(list_data_type):
list_depth += 1
list_data_type, list_nullable = unwrap_nullable(list_data_type.data_type)
prefix = ''
suffix = ''
if list_depth > 0:
i = 0
while i < list_depth:
i += 1
prefix = '{}{{ $0.map '.format(prefix)
suffix = '{} }}'.format(suffix)
return (list_depth, prefix, suffix, list_data_type, list_nullable)
def field_is_user_defined(field):
data_type, nullable = unwrap_nullable(field.data_type)
return is_user_defined_type(data_type) and not nullable
def field_is_user_defined_optional(field):
data_type, nullable = unwrap_nullable(field.data_type)
return is_user_defined_type(data_type) and nullable
def field_is_user_defined_map(field):
data_type, _ = unwrap_nullable(field.data_type)
return is_map_type(data_type) and is_user_defined_type(data_type.value_data_type)
def field_is_user_defined_list(field):
data_type, _ = unwrap_nullable(field.data_type)
if is_list_type(data_type):
list_data_type, _ = unwrap_nullable(data_type.data_type)
return is_user_defined_type(list_data_type)
else:
return False
# List[typing.Tuple[let_name: str, swift_type: str, objc_type: str]]
def objc_datatype_value_type_tuples(data_type):
ret = []
# if list type get the data type of the item
if is_list_type(data_type):
data_type = data_type.data_type
# if map type get the data type of the value
if is_map_type(data_type):
data_type = data_type.value_data_type
# if data_type is a struct type and has subtypes, process them into labels and types
if is_struct_type(data_type) and data_type.has_enumerated_subtypes():
all_subtypes = data_type.get_all_subtypes_with_tags()
for subtype in all_subtypes:
# subtype[0] is the tag name and subtype[1] is the subtype struct itself
struct = subtype[1]
case_let_name = fmt_var(struct.name)
swift_type = fmt_type(struct)
objc_type = fmt_objc_type(struct)
ret.append((case_let_name, swift_type, objc_type))
return ret
def field_datatype_has_subtypes(field) -> bool:
return datatype_has_subtypes(field.data_type)
def datatype_has_subtypes(data_type) -> bool:
return len(objc_datatype_value_type_tuples(data_type)) > 0
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