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fragment.go
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fragment.go
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// Copyright (C) 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cst
import (
"io"
)
// Fragment is a component of a cst that is backed by a token.
// This includes Nodes and all forms of space and comment.
type Fragment interface {
// Tok returns the underlying token of this fragment.
Tok() Token
// Write is used to write the underlying token out to the writer.
Write(io.Writer) error
}
// Separator is a list type to manage fragments that were skipped.
type Separator []Fragment
// Write is used to write the list of separators to the writer.
func (s Separator) Write(w io.Writer) error {
for _, n := range s {
if err := n.Write(w); err != nil {
return err
}
}
return nil
}