Replace duck typing with protocols for target and CustomTargetIndex types#15930
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bonzini wants to merge 8 commits into
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Replace duck typing with protocols for target and CustomTargetIndex types#15930bonzini wants to merge 8 commits into
bonzini wants to merge 8 commits into
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dnicolodi
reviewed
Jun 16, 2026
dnicolodi
reviewed
Jun 16, 2026
dnicolodi
reviewed
Jun 16, 2026
dnicolodi
reviewed
Jun 16, 2026
... where CustomTargetIndexes or even CustomTargets are not possible. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is called with isinstance checks on CommandTypes, so the right type is BuildTargetTypes (coming from the Union). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Document precisely what is required, and in particular that AnyTargetProto is not hashable. The old type union is not needed anymore. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Document precisely what is required, the old type union is not needed anymore outside the interpreter. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Replace the abstract class LinkableTarget and the LinkableTargetTypes union with a protocol. For the abstract class, in particular, there are no concrete methods and there is no need for isinstance tests, so they are interchangeable. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Document precisely what's needed, and remove the last two union types. Union types should be reserved for "faking" sum types via isinstance. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This PR continues the idea of limiting Union to cases where individual members are categorized with
isinstancetests. Instead, cases where Meson mostly uses duck typing between CustomTargetBase and BuildTarget are now handled with protocols. Whileisinstancetests are occasionally used with types declared as*Prototypes, this use is relatively rare, especially in the interpreter->build interface.