1 files changed, 67 insertions, 0 deletions
diff --git a/src/cmd/fix/httpheaders.go b/src/cmd/fix/httpheaders.go
new file mode 100644
index 000000000..15c21ac86
--- /dev/null
+++ b/src/cmd/fix/httpheaders.go
@@ -0,0 +1,67 @@
+// 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(httpHeadersFix)
+}
+
+var httpHeadersFix = fix{
+	"httpheaders",
+	"2011-06-16",
+	httpheaders,
+	`Rename http Referer, UserAgent, Cookie, SetCookie, which are now methods.
+
+http://codereview.appspot.com/4620049/
+`,
+}
+
+func httpheaders(f *ast.File) bool {
+	if !imports(f, "http") {
+		return false
+	}
+
+	called := make(map[ast.Node]bool)
+	walk(f, func(ni interface{}) {
+		switch n := ni.(type) {
+		case *ast.CallExpr:
+			called[n.Fun] = true
+		}
+	})
+
+	fixed := false
+	typeof, _ := typecheck(headerTypeConfig, f)
+	walk(f, func(ni interface{}) {
+		switch n := ni.(type) {
+		case *ast.SelectorExpr:
+			if called[n] {
+				break
+			}
+			if t := typeof[n.X]; t != "*http.Request" && t != "*http.Response" {
+				break
+			}
+			switch n.Sel.Name {
+			case "Referer", "UserAgent":
+				n.Sel.Name += "()"
+				fixed = true
+			case "Cookie":
+				n.Sel.Name = "Cookies()"
+				fixed = true
+			}
+		}
+	})
+	return fixed
+}
+
+var headerTypeConfig = &TypeConfig{
+	Type: map[string]*Type{
+		"*http.Request":  {},
+		"*http.Response": {},
+	},
+}