/
reverse_deps.go
46 lines (40 loc) · 1.14 KB
/
reverse_deps.go
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package query
import (
"fmt"
"sort"
"core"
)
// ReverseDeps For each input label, finds all targets which depend upon it.
func ReverseDeps(graph *core.BuildGraph, labels []core.BuildLabel) {
uniqueTargets := make(map[core.BuildLabel]struct{})
for _, label := range labels {
for _, child := range graph.PackageOrDie(label.PackageName).AllChildren(graph.TargetOrDie(label)) {
for _, target := range graph.ReverseDependencies(child) {
if parent := target.Parent(graph); parent != nil {
uniqueTargets[parent.Label] = struct{}{}
} else {
uniqueTargets[target.Label] = struct{}{}
}
}
}
}
// Check for anything subincluding this guy too
for _, pkg := range graph.PackageMap() {
for _, label := range labels {
if pkg.HasSubinclude(label) {
uniqueTargets[core.BuildLabel{PackageName: pkg.Name, Name: "all"}] = struct{}{}
}
}
}
targets := make(core.BuildLabels, 0, len(uniqueTargets))
for _, label := range labels {
delete(uniqueTargets, label)
}
for target := range uniqueTargets {
targets = append(targets, target)
}
sort.Sort(targets)
for _, target := range targets {
fmt.Printf("%s\n", target)
}
}