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Split OutputsSpec::merge into OuputsSpec::{union_, isSubsetOf}

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Additionally get rid of the evil time we made an empty
`OutputSpec::Names()`.
This commit is contained in:
John Ericson 2023-01-12 20:20:27 -05:00
parent 0faf5326bd
commit 31875bcfb7
4 changed files with 56 additions and 30 deletions
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9
src/libstore/outputs-spec.hh
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@ -49,10 +49,11 @@ struct OutputsSpec : _OutputsSpecRaw {
bool contains(const std::string & output) const;
/* Modify the receiver outputs spec so it is the union of it's old value
and the argument. Return whether the output spec needed to be modified
--- if it didn't it was already "large enough". */
bool merge(const OutputsSpec & outputs);
/* Create a new OutputsSpec which is the union of this and that. */
OutputsSpec union_(const OutputsSpec & that) const;
/* Whether this OutputsSpec is a subset of that. */
bool isSubsetOf(const OutputsSpec & outputs) const;
/* Parse a string of the form 'output1,...outputN' or
'*', returning the outputs spec. */