blob: 9c441dba9c06b8a2c1a1943f48d8c9de13cf5eed (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package typeutil
import "go/types"
// Dependencies returns all dependencies of the specified packages.
//
// Dependent packages appear in topological order: if package P imports
// package Q, Q appears earlier than P in the result.
// The algorithm follows import statements in the order they
// appear in the source code, so the result is a total order.
//
func Dependencies(pkgs ...*types.Package) []*types.Package {
var result []*types.Package
seen := make(map[*types.Package]bool)
var visit func(pkgs []*types.Package)
visit = func(pkgs []*types.Package) {
for _, p := range pkgs {
if !seen[p] {
seen[p] = true
visit(p.Imports())
result = append(result, p)
}
}
}
visit(pkgs)
return result
}
|