/
loadall.go
87 lines (68 loc) · 1.94 KB
/
loadall.go
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package libify
import (
"context"
"strings"
"github.com/pkg/errors"
"golang.org/x/tools/go/packages"
)
func LoadAllPackages(ctx context.Context, path, dir string, tests bool, filter func(string) bool) ([]string, error) {
cfg := &packages.Config{
Mode: packages.LoadImports,
Tests: tests,
Context: ctx,
Dir: dir,
}
pkgs, err := packages.Load(cfg, path)
if err != nil {
return nil, errors.WithStack(err)
}
var out []string
doneID := map[string]bool{}
donePath := map[string]bool{}
var process func(*packages.Package)
process = func(p *packages.Package) {
// here we have:
//
// | PkgPath | ID |
// | X | X | just non-test files
// | X | X [X.test] | all files in X package (including tests)
// | X_test | X_test [X.test] | just test files in X_test package (this is missing if no X_test tests)
//
if !filter(p.PkgPath) {
return
}
if !doneID[p.ID] {
doneID[p.ID] = true
for _, imp := range p.Imports {
process(imp)
}
}
if !donePath[p.PkgPath] && !strings.HasSuffix(p.PkgPath, "_test") && !strings.HasSuffix(p.PkgPath, ".test") {
donePath[p.PkgPath] = true
out = append(out, p.PkgPath)
}
}
for _, pkg := range pkgs {
// here we have:
//
// | PkgPath | ID |
// | X | X | just non-test files
// | X | X [X.test] | all files in X package (including tests)
// | X_test | X_test [X.test] | just test files in X_test package (this is missing if no X_test tests)
// | X.test | X.test | generated files
//
process(pkg)
}
if tests {
// packages.Load with Test:true only returns test packages in the specified package (not
// imports), so a second run is needed to pick up the imports of all _test packages.
pkgs, err = packages.Load(cfg, out...)
if err != nil {
return nil, errors.WithStack(err)
}
for _, pkg := range pkgs {
process(pkg)
}
}
return out, nil
}