/*
 * malloc-free JSON parser for Arduino
 * Benoit Blanchon 2014
 * MIT License
 */

#include "JsonObjectBase.h"

#include <stdlib.h> // for strtol, strtod

int JsonObjectBase::getNestedTokenCount(jsmntok_t* token)
{
	int count = 0;
	jsmntok_t* nextSibling = token + 1;

	while (nextSibling->start < token->end)
	{
		nextSibling++;
		count++;
	}

	return count;
}

bool JsonObjectBase::getBoolFromToken(jsmntok_t* token)
{
	if (token->type != JSMN_PRIMITIVE) return 0;

	// "true"
	if (json[token->start] == 't') return true;

	// "false"
	if (json[token->start] == 'f') return false;

	// "null"
	if (json[token->start] == 'n') return false;
	
	// number
	return strtol(json + token->start, 0, 0) != 0;
}

double JsonObjectBase::getDoubleFromToken(jsmntok_t* token)
{
	if (token == 0 || token->type != JSMN_PRIMITIVE) return 0;

	return strtod(json + token->start, 0);
}

long JsonObjectBase::getLongFromToken(jsmntok_t* token)
{
	if (token == 0 || token->type != JSMN_PRIMITIVE) return 0;

	return strtol(json + token->start, 0, 0);
}

char* JsonObjectBase::getStringFromToken(jsmntok_t* token)
{
	if (token == 0 || token->type != JSMN_PRIMITIVE && token->type != JSMN_STRING)
		return 0;

	// add null terminator to the string
	json[token->end] = 0;

	return json + token->start;
}