// Copyright (C) 2022-2023  Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later

package lowmemjson

import (
	"git.lukeshu.com/go/lowmemjson/internal/jsonparse"
)

type reEncodeString struct {
	out reEncoderModule

	// BackslashEscape returns whether a given character in a
	// string should be backslash-escaped.  The bool argument is
	// whether it was \u-escaped in the input.  This does not
	// affect characters that must or must-not be escaped to be
	// valid JSON.
	BackslashEscape BackslashEscaper
}

var _ reEncoderModule = (*reEncodeString)(nil)

func (enc *reEncodeString) PopWriteBarrier() {
	enc.out.PopWriteBarrier()
}

func (enc *reEncodeString) HandleRune(c rune, t jsonparse.RuneType, escape BackslashEscapeMode, stackSize int) error {
	if t == jsonparse.RuneTypeStringChar {
		escape = enc.BackslashEscape(c, escape)
	}
	return enc.out.HandleRune(c, t, escape, stackSize)
}