diff options
Diffstat (limited to 'src/cmd/fix/gotypes.go')
-rw-r--r-- | src/cmd/fix/gotypes.go | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/cmd/fix/gotypes.go b/src/cmd/fix/gotypes.go new file mode 100644 index 0000000..6085816 --- /dev/null +++ b/src/cmd/fix/gotypes.go @@ -0,0 +1,75 @@ +// Copyright 2015 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" + "strconv" +) + +func init() { + register(gotypesFix) +} + +var gotypesFix = fix{ + name: "gotypes", + date: "2015-07-16", + f: gotypes, + desc: `Change imports of golang.org/x/tools/go/{exact,types} to go/{constant,types}`, +} + +func gotypes(f *ast.File) bool { + fixed := fixGoTypes(f) + if fixGoExact(f) { + fixed = true + } + return fixed +} + +func fixGoTypes(f *ast.File) bool { + return rewriteImport(f, "golang.org/x/tools/go/types", "go/types") +} + +func fixGoExact(f *ast.File) bool { + // This one is harder because the import name changes. + // First find the import spec. + var importSpec *ast.ImportSpec + walk(f, func(n any) { + if importSpec != nil { + return + } + spec, ok := n.(*ast.ImportSpec) + if !ok { + return + } + path, err := strconv.Unquote(spec.Path.Value) + if err != nil { + return + } + if path == "golang.org/x/tools/go/exact" { + importSpec = spec + } + + }) + if importSpec == nil { + return false + } + + // We are about to rename exact.* to constant.*, but constant is a common + // name. See if it will conflict. This is a hack but it is effective. + exists := renameTop(f, "constant", "constant") + suffix := "" + if exists { + suffix = "_" + } + // Now we need to rename all the uses of the import. RewriteImport + // affects renameTop, but not vice versa, so do them in this order. + renameTop(f, "exact", "constant"+suffix) + rewriteImport(f, "golang.org/x/tools/go/exact", "go/constant") + // renameTop will also rewrite the imported package name. Fix that; + // we know it should be missing. + importSpec.Name = nil + return true +} |