Current File : //proc/thread-self/root/opt/alt/python38/lib/python3.8/site-packages/pip/_internal/req/req_set.py
import logging
from collections import OrderedDict
from typing import Dict, List
from pip._vendor.packaging.utils import canonicalize_name
from pip._internal.req.req_install import InstallRequirement
logger = logging.getLogger(__name__)
class RequirementSet:
def __init__(self, check_supported_wheels: bool = True) -> None:
"""Create a RequirementSet."""
self.requirements: Dict[str, InstallRequirement] = OrderedDict()
self.check_supported_wheels = check_supported_wheels
self.unnamed_requirements: List[InstallRequirement] = []
def __str__(self) -> str:
requirements = sorted(
(req for req in self.requirements.values() if not req.comes_from),
key=lambda req: canonicalize_name(req.name or ""),
)
return " ".join(str(req.req) for req in requirements)
def __repr__(self) -> str:
requirements = sorted(
self.requirements.values(),
key=lambda req: canonicalize_name(req.name or ""),
)
format_string = "<{classname} object; {count} requirement(s): {reqs}>"
return format_string.format(
classname=self.__class__.__name__,
count=len(requirements),
reqs=", ".join(str(req.req) for req in requirements),
)
def add_unnamed_requirement(self, install_req: InstallRequirement) -> None:
assert not install_req.name
self.unnamed_requirements.append(install_req)
def add_named_requirement(self, install_req: InstallRequirement) -> None:
assert install_req.name
project_name = canonicalize_name(install_req.name)
self.requirements[project_name] = install_req
def has_requirement(self, name: str) -> bool:
project_name = canonicalize_name(name)
return (
project_name in self.requirements
and not self.requirements[project_name].constraint
)
def get_requirement(self, name: str) -> InstallRequirement:
project_name = canonicalize_name(name)
if project_name in self.requirements:
return self.requirements[project_name]
raise KeyError(f"No project with the name {name!r}")
@property
def all_requirements(self) -> List[InstallRequirement]:
return self.unnamed_requirements + list(self.requirements.values())
@property
def requirements_to_install(self) -> List[InstallRequirement]:
"""Return the list of requirements that need to be installed.
TODO remove this property together with the legacy resolver, since the new
resolver only returns requirements that need to be installed.
"""
return [
install_req
for install_req in self.all_requirements
if not install_req.constraint and not install_req.satisfied_by
]
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