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// 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": {},
},
}
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