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/*****************************************************************************
*
* Copyright (c) 2000 - 2017, Lawrence Livermore National Security, LLC
* Produced at the Lawrence Livermore National Laboratory
* LLNL-CODE-442911
* All rights reserved.
*
* This file is part of VisIt. For details, see https://visit.llnl.gov/. The
* full copyright notice is contained in the file COPYRIGHT located at the root
* of the VisIt distribution or at http://www.llnl.gov/visit/copyright.html.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the disclaimer (as noted below) in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of the LLNS/LLNL nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL LAWRENCE LIVERMORE NATIONAL SECURITY,
* LLC, THE U.S. DEPARTMENT OF ENERGY OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
*****************************************************************************/
#ifndef JSON_NODE_H
#define JSON_NODE_H
#include <state_exports.h>
#include <visitstream.h>
#include <vectortypes.h>
#include <vector>
#include <map>
// ****************************************************************************
// Class: JSONNode
//
// Purpose:
// Very basic tree based JSON generator and parser.
//
// Programmer: Hari Krishnan
// Creation: December 13, 2007
//
// Modifications:
// Kathleen Biagas Fri Nov 16 04:45:15 MST 2012
// Renamed 'GetObject' to 'GetJsonObject' to avoid name conflict on Windows.
//
// ****************************************************************************
class STATE_API JSONNode
{
public:
enum JSONType
{
JSONLONG = 0x1,
JSONDOUBLE = 0x2,
JSONSTRING = 0x4,
JSONARRAY = 0x8,
JSONOBJECT = 0x10,
JSONBOOL = 0x20,
JSONNULLVALUE = 0x40,
JSONINTEGER = JSONLONG,
JSONFLOAT = JSONDOUBLE,
JSONNUMBER = JSONLONG | JSONDOUBLE
};
union number
{
bool nullValue;
bool boolValue;
long lnumber;
double dnumber;
};
struct JSONStruct
{
/// a JSON object can be any of these types..
number num;
std::string str;
std::vector<JSONNode> array;
std::map<std::string,JSONNode> object;
JSONStruct() { num.nullValue = true; }
};
typedef std::vector<JSONNode> JSONArray;
typedef std::map<std::string, JSONNode> JSONObject;
JSONNode();
JSONNode(const JSONNode&);
JSONNode(const JSONNode*);
JSONNode(std::istream &);
JSONNode(const char*);
JSONNode(const std::string&);
JSONNode(const bool &v);
JSONNode(const int& v);
JSONNode(const long& v);
JSONNode(const float& v);
JSONNode(const double& v);
JSONNode(const JSONNode::JSONArray& array);
JSONNode(const JSONNode::JSONObject& obj);
JSONNode(const boolVector& v);
JSONNode(const charVector& v);
JSONNode(const unsignedCharVector& v);
JSONNode(const intVector& v);
JSONNode(const longVector& v);
JSONNode(const floatVector& v);
JSONNode(const doubleVector& v);
JSONNode(const stringVector& v);
virtual ~JSONNode();
JSONType GetType() const { return type; }
bool isNullValue() const { return json.num.nullValue; }
bool GetBool() const { return json.num.boolValue; }
int GetInt() const { return (int)GetLong(); }
long GetLong() const { return json.num.lnumber; }
float GetFloat() const { return (float)GetDouble(); }
double GetDouble() const { return type == JSONINTEGER || type == JSONLONG ?
(double)json.num.lnumber :
json.num.dnumber; }
std::string GetString() const { return json.str; }
JSONArray& GetArray() { return json.array; }
JSONObject& GetJsonObject() { return json.object; }
bool AsBool() const;
char AsChar() const;
unsigned char AsUnsignedChar() const;
int AsInt() const;
long AsLong() const;
float AsFloat() const;
double AsDouble() const;
std::string AsString() const;
boolVector AsBoolVector() const;
charVector AsCharVector() const;
unsignedCharVector AsUnsignedCharVector() const;
intVector AsIntVector() const;
longVector AsLongVector() const;
floatVector AsFloatVector() const;
doubleVector AsDoubleVector() const;
stringVector AsStringVector() const;
// bool isNullValue() { return json.num.nullValue; }
// bool GetBool() { return json.num.boolValue; }
// int GetInt() { return json.num.integer; }
// long GetLong() { return json.num.lnumber; }
// float GetFloat() { return json.num.fnumber; }
// double GetDouble() { return json.num.dnumber; }
// std::string GetString() { return json.str; }
const JSONArray& GetArray() const { return json.array; }
const JSONObject& GetJsonObject() const { return json.object; }
void SetNullValue();
//JSONNode *operator=(const void*& v);
JSONNode &operator=(const bool& v);
JSONNode &operator=(const int& v);
JSONNode &operator=(const long& v);
JSONNode &operator=(const float& v);
JSONNode &operator=(const double& v);
JSONNode &operator=(const char* v);
JSONNode &operator=(const std::string& v);
JSONNode &operator=(const JSONArray& v);
JSONNode &operator=(const JSONObject& v);
JSONNode &operator=(const JSONNode& v);
JSONNode &operator=(const boolVector& v);
JSONNode &operator=(const charVector& v);
JSONNode &operator=(const unsignedCharVector& v);
JSONNode &operator=(const intVector& v);
JSONNode &operator=(const longVector& v);
JSONNode &operator=(const floatVector& v);
JSONNode &operator=(const doubleVector& v);
JSONNode &operator=(const stringVector& v);
/// for JSONArray
JSONNode &operator[](int index);
/// for JSONObject
JSONNode &operator[](const std::string& key);
// for JSON Const
//const JSONNode &operator[](int index) const;
/// for JSONObject
//JSONNode operator[](const std::string& key) const;
std::string ToString(const std::string &indent="") const;
/// size..
size_t Length();
/// array values
bool Append(const JSONNode& node);
bool Append(const JSONArray& array);
///object values..
bool HasKey(std::string key);
// JSON parsing methods
size_t Parse(istream &);
size_t Parse(const std::string &);
private:
std::string EscapeString(const std::string &val) const;
template<typename T>
JSONNode& convertArray(const T& v);
// init & destroy helpers
void Init(const JSONNode&);
void Cleanup();
void ParseObject(std::istream &iss);
void ParseArray(std::istream &iss);
void ParseVariant(std::istream &iss);
std::string ParseKey(std::istream &iss);
JSONType type;
JSONStruct json;
};
#endif
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