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// Copyright (C) MongoDB, Inc. 2014-present.
//
// 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
package json
// Transition function for recognizing unquoted strings.
// Adapted from encoding/json/scanner.go.
func isBeginUnquotedString(c int) bool {
return c == '$' || c == '_' || 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z'
}
func isInUnquotedString(c int) bool {
return isBeginUnquotedString(c) || '0' <= c && c <= '9'
}
func stateInUnquotedString(s *scanner, c int) int {
if isInUnquotedString(c) {
return scanContinue
}
return stateEndValue(s, c)
}
// Decoder function that immediately returns an already unquoted string.
// Adapted from encoding/json/decode.go.
func maybeUnquoteBytes(s []byte) ([]byte, bool) {
if len(s) == 0 {
return nil, false
}
if s[0] != '"' && s[len(s)-1] != '"' && s[0] != '\'' && s[len(s)-1] != '\'' {
return s, true
}
return unquoteBytes(s)
}
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