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