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letro-authentication-service/policies/util/coveralls.rego
2025-06-12 11:01:07 +02:00

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Rego

# Copyright 2025 New Vector Ltd.
#
# SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
# Please see LICENSE files in the repository root for full details.
package util
import rego.v1
from_opa := {"source_files": coverage}
coverage contains obj if {
some file, report in input.files
obj := {"name": file, "coverage": to_lines(report)}
}
covered_map(report) := cm if {
covered := object.get(report, "covered", [])
cm := {line: 1 |
some item in covered
some line in numbers.range(item.start.row, item.end.row)
}
}
not_covered_map(report) := ncm if {
not_covered := object.get(report, "not_covered", [])
ncm := {line: 0 |
some item in not_covered
some line in numbers.range(item.start.row, item.end.row)
}
}
to_lines(report) := lines if {
cm := covered_map(report)
ncm := not_covered_map(report)
keys := sort([line | some line, _ in object.union(cm, ncm)])
last := keys[count(keys) - 1]
lines := [value |
some i in numbers.range(1, last)
value := to_value(cm, ncm, i)
]
}
to_value(cm, _, line) := 1 if {
cm[line]
}
to_value(_, ncm, line) := 0 if {
ncm[line]
}
to_value(cm, ncm, line) := null if {
not cm[line]
not ncm[line]
}