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
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package mk2rbc
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"strings"
mkparser "android/soong/androidmk/parser"
)
// Extracts the list of product config variables from a file, calling
// given registrar for each variable.
func FindConfigVariables(mkFile string, vr variableRegistrar) error {
mkContents, err := ioutil.ReadFile(mkFile)
if err != nil {
return err
}
parser := mkparser.NewParser(mkFile, bytes.NewBuffer(mkContents))
nodes, errs := parser.Parse()
if len(errs) > 0 {
for _, e := range errs {
fmt.Fprintln(os.Stderr, "ERROR:", e)
}
return fmt.Errorf("cannot parse %s", mkFile)
}
for _, node := range nodes {
asgn, ok := node.(*mkparser.Assignment)
if !ok {
continue
}
// We are looking for a variable called '_product_list_vars'
// or '_product_single_value_vars'.
if !asgn.Name.Const() {
continue
}
varName := asgn.Name.Strings[0]
var starType starlarkType
if varName == "_product_list_vars" {
starType = starlarkTypeList
} else if varName == "_product_single_value_vars" {
starType = starlarkTypeUnknown
} else {
continue
}
for _, name := range strings.Fields(asgn.Value.Dump()) {
vr.NewVariable(name, VarClassConfig, starType)
}
}
return nil
}
|