| // Copyright 2010 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. |
| |
| // This file contains the test for canonical struct tags. |
| |
| package main |
| |
| import ( |
| "go/ast" |
| "reflect" |
| "strconv" |
| ) |
| |
| // checkField checks a struct field tag. |
| func (f *File) checkCanonicalFieldTag(field *ast.Field) { |
| if field.Tag == nil { |
| return |
| } |
| |
| tag, err := strconv.Unquote(field.Tag.Value) |
| if err != nil { |
| f.Warnf(field.Pos(), "unable to read struct tag %s", field.Tag.Value) |
| return |
| } |
| |
| // Check tag for validity by appending |
| // new key:value to end and checking that |
| // the tag parsing code can find it. |
| if reflect.StructTag(tag+` _gofix:"_magic"`).Get("_gofix") != "_magic" { |
| f.Warnf(field.Pos(), "struct field tag %s not compatible with reflect.StructTag.Get", field.Tag.Value) |
| return |
| } |
| } |