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package spray.json
trait JsonParserSettings {
/**
* The JsonParser uses recursive decent parsing that keeps intermediate values on the stack. To prevent
* StackOverflowExceptions a limit is enforced on the depth of the parsed JSON structure.
*
* As a guideline we tested that one level of depth needs about 300 bytes of stack space.
*
* The default is a depth of 1000.
*/
def maxDepth: Int
/**
* Returns a copy of this settings object with the `maxDepth` setting changed to the new value.
*/
def withMaxDepth(newValue: Int): JsonParserSettings
/**
* The maximum number of characters the parser should support for numbers. This is restricted because creating
* `BigDecimal`s with high precision can be very slow (approx. quadratic runtime per amount of characters).
*/
def maxNumberCharacters: Int
/**
* Returns a copy of this settings object with the `maxNumberCharacters` setting changed to the new value.
*/
def withMaxNumberCharacters(newValue: Int): JsonParserSettings
}
object JsonParserSettings {
val default: JsonParserSettings = SettingsImpl()
private case class SettingsImpl(
maxDepth: Int = 1000,
maxNumberCharacters: Int = 100
) extends JsonParserSettings {
override def withMaxDepth(newValue: Int): JsonParserSettings = copy(maxDepth = newValue)
override def withMaxNumberCharacters(newValue: Int): JsonParserSettings = copy(maxNumberCharacters = newValue)
}
}
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