Commit e50479ca authored by Rob Pike's avatar Rob Pike

gofix: add go1pkgrename

This will do the package import renamings for Go 1.

R=rsc, r, dsymonds
CC=golang-dev
https://golang.org/cl/5316078
parent 816f1228
......@@ -9,6 +9,7 @@ GOFILES=\
error.go\
filepath.go\
fix.go\
go1pkgrename.go\
htmlerr.go\
httpfinalurl.go\
httpfs.go\
......
// Copyright 2011 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 main
import (
"go/ast"
)
func init() {
register(go1pkgrenameFix)
}
var go1pkgrenameFix = fix{
"go1rename",
"2011-11-08",
go1pkgrename,
`Rewrite imports for packages moved during transition to Go 1.
http://codereview.appspot.com/5316078
`,
}
var go1PackageRenames = []struct{ old, new string }{
{"asn1", "encoding/asn1"},
{"big", "math/big"},
{"cmath", "math/cmplx"},
{"csv", "encoding/csv"},
{"exec", "os/exec"},
{"exp/template/html", "html/template"},
{"gob", "encoding/gob"},
{"http", "net/http"},
{"http/cgi", "net/http/cgi"},
{"http/fcgi", "net/http/fcgi"},
{"http/httptest", "net/http/httptest"},
{"http/pprof", "net/http/pprof"},
{"json", "encoding/json"},
{"mail", "net/mail"},
{"rpc", "net/rpc"},
{"rpc/jsonrpc", "net/rpc/jsonrpc"},
{"scanner", "text/scanner"},
{"smtp", "net/smtp"},
{"syslog", "log/syslog"},
{"tabwriter", "text/tabwriter"},
{"template", "text/template"},
{"template/parse", "text/template/parse"},
{"rand", "math/rand"},
{"url", "net/url"},
{"utf16", "unicode/utf16"},
{"utf8", "unicode/utf8"},
{"xml", "encoding/xml"},
}
var go1PackageNameRenames = []struct{ newPath, old, new string }{
{"html/template", "html", "template"},
{"math/cmplx", "cmath", "cmplx"},
}
func go1pkgrename(f *ast.File) bool {
fixed := false
// First update the imports.
for _, rename := range go1PackageRenames {
if !imports(f, rename.old) {
continue
}
if rewriteImport(f, rename.old, rename.new) {
fixed = true
}
}
if !fixed {
return false
}
// Now update the package names used by importers.
for _, rename := range go1PackageNameRenames {
// These are rare packages, so do the import test before walking.
if imports(f, rename.newPath) {
walk(f, func(n interface{}) {
if sel, ok := n.(*ast.SelectorExpr); ok {
if isTopName(sel.X, rename.old) {
// We know Sel.X is an Ident.
sel.X.(*ast.Ident).Name = rename.new
return
}
}
})
}
}
return fixed
}
// Copyright 2011 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 main
func init() {
addTestCases(go1renameTests, go1pkgrename)
}
var go1renameTests = []testCase{
{
Name: "go1rename.0",
In: `package main
import (
"asn1"
"big"
"cmath"
"csv"
"exec"
"exp/template/html"
"gob"
"http"
"http/cgi"
"http/fcgi"
"http/httptest"
"http/pprof"
"json"
"mail"
"rand"
"rpc"
"rpc/jsonrpc"
"scanner"
"smtp"
"syslog"
"tabwriter"
"template"
"template/parse"
"url"
"utf16"
"utf8"
"xml"
)
`,
Out: `package main
import (
"encoding/asn1"
"encoding/csv"
"encoding/gob"
"encoding/json"
"encoding/xml"
"html/template"
"log/syslog"
"math/big"
"math/cmplx"
"math/rand"
"net/http"
"net/http/cgi"
"net/http/fcgi"
"net/http/httptest"
"net/http/pprof"
"net/mail"
"net/rpc"
"net/rpc/jsonrpc"
"net/smtp"
"net/url"
"os/exec"
"text/scanner"
"text/tabwriter"
"text/template"
"text/template/parse"
"unicode/utf16"
"unicode/utf8"
)
`,
},
{
Name: "go1rename.1",
In: `package main
import "cmath"
import poot "exp/template/html"
var _ = cmath.Sin
var _ = poot.Poot
`,
Out: `package main
import "math/cmplx"
import poot "html/template"
var _ = cmplx.Sin
var _ = poot.Poot
`,
},
}
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