435c0d9fc8
This PR switches the Nomad repository from using govendor to Go modules for managing dependencies. Aspects of the Nomad workflow remain pretty much the same. The usual Makefile targets should continue to work as they always did. The API submodule simply defers to the parent Nomad version on the repository, keeping the semantics of API versioning that currently exists.
94 lines
1.8 KiB
Go
94 lines
1.8 KiB
Go
package facts
|
|
|
|
import (
|
|
"bufio"
|
|
"bytes"
|
|
"io"
|
|
"os"
|
|
"reflect"
|
|
"strings"
|
|
|
|
"golang.org/x/tools/go/analysis"
|
|
)
|
|
|
|
type Generator int
|
|
|
|
// A list of known generators we can detect
|
|
const (
|
|
Unknown Generator = iota
|
|
Goyacc
|
|
Cgo
|
|
Stringer
|
|
ProtocGenGo
|
|
)
|
|
|
|
var (
|
|
// used by cgo before Go 1.11
|
|
oldCgo = []byte("// Created by cgo - DO NOT EDIT")
|
|
prefix = []byte("// Code generated ")
|
|
suffix = []byte(" DO NOT EDIT.")
|
|
nl = []byte("\n")
|
|
crnl = []byte("\r\n")
|
|
)
|
|
|
|
func isGenerated(path string) (Generator, bool) {
|
|
f, err := os.Open(path)
|
|
if err != nil {
|
|
return 0, false
|
|
}
|
|
defer f.Close()
|
|
br := bufio.NewReader(f)
|
|
for {
|
|
s, err := br.ReadBytes('\n')
|
|
if err != nil && err != io.EOF {
|
|
return 0, false
|
|
}
|
|
s = bytes.TrimSuffix(s, crnl)
|
|
s = bytes.TrimSuffix(s, nl)
|
|
if bytes.HasPrefix(s, prefix) && bytes.HasSuffix(s, suffix) {
|
|
text := string(s[len(prefix) : len(s)-len(suffix)])
|
|
switch text {
|
|
case "by goyacc.":
|
|
return Goyacc, true
|
|
case "by cmd/cgo;":
|
|
return Cgo, true
|
|
case "by protoc-gen-go.":
|
|
return ProtocGenGo, true
|
|
}
|
|
if strings.HasPrefix(text, `by "stringer `) {
|
|
return Stringer, true
|
|
}
|
|
if strings.HasPrefix(text, `by goyacc `) {
|
|
return Goyacc, true
|
|
}
|
|
|
|
return Unknown, true
|
|
}
|
|
if bytes.Equal(s, oldCgo) {
|
|
return Cgo, true
|
|
}
|
|
if err == io.EOF {
|
|
break
|
|
}
|
|
}
|
|
return 0, false
|
|
}
|
|
|
|
var Generated = &analysis.Analyzer{
|
|
Name: "isgenerated",
|
|
Doc: "annotate file names that have been code generated",
|
|
Run: func(pass *analysis.Pass) (interface{}, error) {
|
|
m := map[string]Generator{}
|
|
for _, f := range pass.Files {
|
|
path := pass.Fset.PositionFor(f.Pos(), false).Filename
|
|
g, ok := isGenerated(path)
|
|
if ok {
|
|
m[path] = g
|
|
}
|
|
}
|
|
return m, nil
|
|
},
|
|
RunDespiteErrors: true,
|
|
ResultType: reflect.TypeOf(map[string]Generator{}),
|
|
}
|