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