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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
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3 changed files with 192 additions and 0 deletions
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@ -9,6 +9,7 @@ GOFILES=\
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error.go\
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filepath.go\
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fix.go\
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go1pkgrename.go\
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htmlerr.go\
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httpfinalurl.go\
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httpfs.go\
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93
src/cmd/gofix/go1pkgrename.go
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93
src/cmd/gofix/go1pkgrename.go
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@ -0,0 +1,93 @@
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"go/ast"
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)
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func init() {
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register(go1pkgrenameFix)
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}
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var go1pkgrenameFix = fix{
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"go1rename",
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"2011-11-08",
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go1pkgrename,
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`Rewrite imports for packages moved during transition to Go 1.
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http://codereview.appspot.com/5316078
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`,
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}
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var go1PackageRenames = []struct{ old, new string }{
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{"asn1", "encoding/asn1"},
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{"big", "math/big"},
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{"cmath", "math/cmplx"},
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{"csv", "encoding/csv"},
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{"exec", "os/exec"},
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{"exp/template/html", "html/template"},
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{"gob", "encoding/gob"},
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{"http", "net/http"},
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{"http/cgi", "net/http/cgi"},
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{"http/fcgi", "net/http/fcgi"},
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{"http/httptest", "net/http/httptest"},
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{"http/pprof", "net/http/pprof"},
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{"json", "encoding/json"},
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{"mail", "net/mail"},
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{"rpc", "net/rpc"},
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{"rpc/jsonrpc", "net/rpc/jsonrpc"},
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{"scanner", "text/scanner"},
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{"smtp", "net/smtp"},
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{"syslog", "log/syslog"},
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{"tabwriter", "text/tabwriter"},
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{"template", "text/template"},
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{"template/parse", "text/template/parse"},
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{"rand", "math/rand"},
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{"url", "net/url"},
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{"utf16", "unicode/utf16"},
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{"utf8", "unicode/utf8"},
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{"xml", "encoding/xml"},
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}
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var go1PackageNameRenames = []struct{ newPath, old, new string }{
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{"html/template", "html", "template"},
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{"math/cmplx", "cmath", "cmplx"},
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}
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func go1pkgrename(f *ast.File) bool {
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fixed := false
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// First update the imports.
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for _, rename := range go1PackageRenames {
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if !imports(f, rename.old) {
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continue
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}
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if rewriteImport(f, rename.old, rename.new) {
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fixed = true
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}
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}
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if !fixed {
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return false
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}
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// Now update the package names used by importers.
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for _, rename := range go1PackageNameRenames {
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// These are rare packages, so do the import test before walking.
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if imports(f, rename.newPath) {
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walk(f, func(n interface{}) {
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if sel, ok := n.(*ast.SelectorExpr); ok {
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if isTopName(sel.X, rename.old) {
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// We know Sel.X is an Ident.
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sel.X.(*ast.Ident).Name = rename.new
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return
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}
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}
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})
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}
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}
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return fixed
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}
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98
src/cmd/gofix/go1pkgrename_test.go
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98
src/cmd/gofix/go1pkgrename_test.go
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@ -0,0 +1,98 @@
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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func init() {
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addTestCases(go1renameTests, go1pkgrename)
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}
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var go1renameTests = []testCase{
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{
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Name: "go1rename.0",
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In: `package main
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import (
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"asn1"
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"big"
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"cmath"
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"csv"
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"exec"
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"exp/template/html"
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"gob"
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"http"
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"http/cgi"
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"http/fcgi"
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"http/httptest"
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"http/pprof"
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"json"
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"mail"
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"rand"
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"rpc"
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"rpc/jsonrpc"
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"scanner"
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"smtp"
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"syslog"
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"tabwriter"
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"template"
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"template/parse"
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"url"
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"utf16"
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"utf8"
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"xml"
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)
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`,
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Out: `package main
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import (
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"encoding/asn1"
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"encoding/csv"
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"encoding/gob"
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"encoding/json"
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"encoding/xml"
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"html/template"
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"log/syslog"
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"math/big"
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"math/cmplx"
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"math/rand"
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"net/http"
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"net/http/cgi"
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"net/http/fcgi"
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"net/http/httptest"
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"net/http/pprof"
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"net/mail"
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"net/rpc"
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"net/rpc/jsonrpc"
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"net/smtp"
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"net/url"
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"os/exec"
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"text/scanner"
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"text/tabwriter"
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"text/template"
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"text/template/parse"
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"unicode/utf16"
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"unicode/utf8"
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)
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`,
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},
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{
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Name: "go1rename.1",
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In: `package main
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import "cmath"
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import poot "exp/template/html"
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var _ = cmath.Sin
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var _ = poot.Poot
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`,
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Out: `package main
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import "math/cmplx"
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import poot "html/template"
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var _ = cmplx.Sin
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var _ = poot.Poot
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`,
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},
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}
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