/**
* 文字 %x20, %x09, %x0A, %x0D を読み飛ばします.
*
* @param Context $context
*/
public function handle(Context $context)
{
static $wsList = array("\r", "\n", "\r\n", "\t", " ");
while ($context->hasNext()) {
$current = $context->current();
if (!in_array($current, $wsList)) {
break;
}
$context->next();
}
}
/**
* 二重引用符で囲まれた JSON 文字列を解析し, 対応する文字列に変換します.
*
* @param Context $context 処理対象の Context オブジェクト
*/
public function handle(Context $context)
{
$quot = $context->current();
if ($quot !== '"') {
$context->throwException("A string must be quoted by '\"'");
}
$context->next();
$value = "";
$escaped = false;
while ($context->hasNext()) {
if ($escaped) {
$value .= $this->decodeEscapedChar($context);
$escaped = false;
continue;
}
$this->validateCodePoint($context);
$current = $context->current();
$context->next();
switch ($current) {
case '"':
$this->result = $value;
return;
case "\\":
$escaped = true;
break;
default:
$value .= $current;
break;
}
}
$context->throwException("End of quotation mark not found");
}
