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/**
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* @author Samuel Mokrani
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*
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* @section LICENSE
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*
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* Copyright (c) 2011 mbed
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @section DESCRIPTION
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* Types Abstraction. JSON serializer and parser. (inspired by picojson). Is used by MbedJSONRpc.
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*
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*/
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#ifndef _Mbed_RPC_VALUE_H_
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#define _Mbed_RPC_VALUE_H_
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#define NB_TOKEN 20
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/*!< Number maximum of MbedJSONValue in an array or an object */
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#include <string>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/** MbedJSONValue class
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*
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* Example:
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* - creation of an MbedJSONValue of type TypeObject containing two others MbedJSONValue:
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* -one array of one string and one integer identified by "my_array"
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* -a boolean identified by "my_boolean"
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* - serialization in JSON format of this object
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* @code
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* MbedJSONValue demo;
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* std::string s;
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*
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* //fill the object
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* demo["my_array"][0] = "demo_string";
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* demo["my_array"][1] = 10;
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* demo["my_boolean"] = true;
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*
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* //serialize it into a JSON string
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* s = demo.serialize();
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*
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*
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* @endcode
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*
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* Example:
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* - creation of an MbedJSONValue from a JSON string
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* - extraction of different values from this existing MbedJSONValue
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* @code
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*
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* MbedJSONValue demo;
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*
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* const char * json = "{\"my_array\": [\"demo_string\", 10], \"my_boolean\": true}";
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*
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* //parse the previous string and fill the object demo
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* parse(demo, json);
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*
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* std::string my_str;
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* int my_int;
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* bool my_bool;
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*
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* my_str = demo["my_array"][0];
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* my_int = demo["my_array"][1];
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* my_bool = demo["my_boolean"];
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*
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* @endcode
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*/
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class MbedJSONValue {
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public:
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/**
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* \enum Type
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* \brief All types which can be used
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*/
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enum Type {
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TypeNull, /*!< Null type */
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TypeBoolean, /*!< Boolean */
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TypeInt, /*!< Integer */
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TypeDouble, /*!< Double */
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TypeString, /*!< String */
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TypeArray, /*!< Array of Type */
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TypeObject /*!< Object */
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};
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/**
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* MbedJSONValue constructor of type TypeNull
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*/
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MbedJSONValue() : _type(TypeNull), index_array(0), index_token(0) {}
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/**
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* MbedJSONValue constructor of type TypeBoolean
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*
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* @param value the object created will be initialized with this boolean
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*/
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MbedJSONValue(bool value) : _type(TypeBoolean), index_array(0), index_token(0) {
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_value.asBool = value;
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}
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/**
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* MbedJSONValue constructor of type TypeInt
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*
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* @param value the object created will be initialized with this integer
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*/
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MbedJSONValue(int value) : _type(TypeInt), index_array(0), index_token(0) {
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_value.asInt = value;
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}
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/**
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* MbedJSONValue constructor of type TypeDouble
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*
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* @param value the object created will be initialized with this double
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*/
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MbedJSONValue(double value) : _type(TypeDouble), index_array(0), index_token(0) {
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_value.asDouble = value;
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}
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/**
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* MbedJSONValue constructor of type TypeString
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*
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* @param value the object created will be initialized with this string
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*/
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MbedJSONValue(std::string const& value) : _type(TypeString), index_array(0), index_token(0) {
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_value.asString = new std::string(value);
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}
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/**
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* MbedJSONValue constructor of type TypeString
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*
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* @param value the object created will be initialized with this string
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*/
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MbedJSONValue(const char* value) : _type(TypeString), index_array(0), index_token(0) {
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_value.asString = new std::string(value);
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}
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/**
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* Copy constructor
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*
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* @param rhs object which will be copied
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*/
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MbedJSONValue(MbedJSONValue const& rhs) : _type(TypeNull) { *this = rhs; }
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/**
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* Destructor
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*/
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~MbedJSONValue() { clean(); }
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/**
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* = Operator overloading for an MbedJSONValue from an MbedJSONValue
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*
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* @param rhs object
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* @return a reference on the MbedJSONValue affected
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*/
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MbedJSONValue& operator=(MbedJSONValue const & rhs);
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/**
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* = Operator overloading for an MbedJSONValue from an int
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*
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* @param rhs integer
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* @return a reference on the MbedJSONValue affected
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*/
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MbedJSONValue& operator=(int const& rhs) { return operator=(MbedJSONValue(rhs)); }
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/**
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* = Operator overloading for an MbedJSONValue from a double
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*
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* @param rhs double
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* @return a reference on the MbedJSONValue affected
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*/
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MbedJSONValue& operator=(double const& rhs) { return operator=(MbedJSONValue(rhs)); }
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/**
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* = Operator overloading for an MbedJSONValue from a string
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*
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* @param rhs string
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* @return a reference on the MbedJSONValue affected
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*/
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MbedJSONValue& operator=(const char* rhs) { return operator=(MbedJSONValue(std::string(rhs))); }
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/**
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* [] Operator overloading for an MbedJSONValue.
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* Each TypeObject object can contain an array of NB_TOKEN MbedJSONValue.
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* This operator is useful to create an array or to retrieve an MbedJSONValue of an existing array.
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*
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* @param i index of the array
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* @return a reference on the MbedJSONValue created or retrieved
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*/
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MbedJSONValue& operator[](int i);
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/**
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* [] Operator overloading for an MbedJSONValue.
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* Each TypeObject MbedJSONValue can contain NB_TOKEN MbedJSONValue IDENTIFIED BY A NAME
|
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0:0cf0e27feaad
|
211
|
* This operator is useful to create a TypeObject MbedJSONValue or to retrieve an MbedJSONValue of an existing TypeObject.
|
| samux |
0:0cf0e27feaad
|
212
|
*
|
| samux |
0:0cf0e27feaad
|
213
|
*
|
| samux |
0:0cf0e27feaad
|
214
|
* @param str identifier of the sub MbedJSONValue
|
| samux |
0:0cf0e27feaad
|
215
|
* @return a reference on the MbedJSONValue created or retrieved
|
| samux |
0:0cf0e27feaad
|
216
|
*/
|
| samux |
0:0cf0e27feaad
|
217
|
MbedJSONValue& operator[](std::string str);
|
| samux |
0:0cf0e27feaad
|
218
|
|
| samux |
0:0cf0e27feaad
|
219
|
/**
|
| samux |
0:0cf0e27feaad
|
220
|
* Retrieve the value of an MbedJSONValue object.
|
| samux |
0:0cf0e27feaad
|
221
|
*
|
| samux |
0:0cf0e27feaad
|
222
|
* Let's suppose that we have an MbedJSONValue of type TypeString.
|
| samux |
0:0cf0e27feaad
|
223
|
* To retrieve this string, you have to do:
|
| samux |
0:0cf0e27feaad
|
224
|
* my_obj.get<std::string>();
|
| samux |
0:0cf0e27feaad
|
225
|
*
|
| samux |
0:0cf0e27feaad
|
226
|
* @return A contant reference on the value of the object
|
| samux |
0:0cf0e27feaad
|
227
|
*/
|
| samux |
0:0cf0e27feaad
|
228
|
template <typename T> const T& get() const;
|
| samux |
0:0cf0e27feaad
|
229
|
|
| samux |
0:0cf0e27feaad
|
230
|
/**
|
| samux |
0:0cf0e27feaad
|
231
|
* Retrieve the value of an MbedJSONValue object.
|
| samux |
0:0cf0e27feaad
|
232
|
*
|
| samux |
0:0cf0e27feaad
|
233
|
* Let's suppose that we have an MbedJSONValue of type TypeInt.
|
| samux |
0:0cf0e27feaad
|
234
|
* To retrieve this integer, you have to do:
|
| samux |
0:0cf0e27feaad
|
235
|
* my_obj.get<int>();
|
| samux |
0:0cf0e27feaad
|
236
|
*
|
| samux |
0:0cf0e27feaad
|
237
|
* @return A reference on the value of the object
|
| samux |
0:0cf0e27feaad
|
238
|
*/
|
| samux |
0:0cf0e27feaad
|
239
|
template <typename T> T& get();
|
| samux |
0:0cf0e27feaad
|
240
|
|
| samux |
0:0cf0e27feaad
|
241
|
|
| samux |
0:0cf0e27feaad
|
242
|
/**
|
| samux |
0:0cf0e27feaad
|
243
|
* Return the type of the MbedJSONValue object
|
| samux |
0:0cf0e27feaad
|
244
|
*
|
| samux |
0:0cf0e27feaad
|
245
|
* @return type of the MbedJSONValue object
|
| samux |
0:0cf0e27feaad
|
246
|
*/
|
| samux |
0:0cf0e27feaad
|
247
|
Type const &getType() const {
|
| samux |
0:0cf0e27feaad
|
248
|
return _type;
|
| samux |
0:0cf0e27feaad
|
249
|
}
|
| samux |
0:0cf0e27feaad
|
250
|
|
| samux |
0:0cf0e27feaad
|
251
|
/**
|
| samux |
0:0cf0e27feaad
|
252
|
* Return the size of an MbedJSONValue object (works for TypeString, TypeArray or TypeObject)
|
| samux |
0:0cf0e27feaad
|
253
|
*
|
| samux |
0:0cf0e27feaad
|
254
|
* @return size
|
| samux |
0:0cf0e27feaad
|
255
|
*/
|
| samux |
0:0cf0e27feaad
|
256
|
int size() const;
|
| samux |
0:0cf0e27feaad
|
257
|
|
| samux |
0:0cf0e27feaad
|
258
|
/**
|
| samux |
0:0cf0e27feaad
|
259
|
* Check for the existence in a TypeObject object of member identified by name
|
| samux |
0:0cf0e27feaad
|
260
|
*
|
| samux |
0:0cf0e27feaad
|
261
|
* @param name Identifier
|
| samux |
0:0cf0e27feaad
|
262
|
* @return true if the object is of type TypeObject AND contains a member named "name", false otherwise
|
| samux |
0:0cf0e27feaad
|
263
|
*/
|
| samux |
0:0cf0e27feaad
|
264
|
bool hasMember(char * name);
|
| samux |
0:0cf0e27feaad
|
265
|
|
| samux |
0:0cf0e27feaad
|
266
|
/**
|
| samux |
0:0cf0e27feaad
|
267
|
* Convert an MbedJSONValue in a JSON frame
|
| samux |
0:0cf0e27feaad
|
268
|
*
|
| samux |
0:0cf0e27feaad
|
269
|
* @return JSON string
|
| samux |
0:0cf0e27feaad
|
270
|
*/
|
| samux |
0:0cf0e27feaad
|
271
|
std::string serialize();
|
| samux |
0:0cf0e27feaad
|
272
|
|
| samux |
0:0cf0e27feaad
|
273
|
protected:
|
| samux |
0:0cf0e27feaad
|
274
|
|
| samux |
0:0cf0e27feaad
|
275
|
// object type
|
| samux |
0:0cf0e27feaad
|
276
|
Type _type;
|
| samux |
0:0cf0e27feaad
|
277
|
|
| samux |
0:0cf0e27feaad
|
278
|
//indexes of TypeObject and TypeArray
|
| samux |
0:0cf0e27feaad
|
279
|
int index_array;
|
| samux |
0:0cf0e27feaad
|
280
|
int index_token;
|
| samux |
0:0cf0e27feaad
|
281
|
|
| samux |
0:0cf0e27feaad
|
282
|
//an object can contain NB_TOKEN tokens. Each token have a name
|
| samux |
0:0cf0e27feaad
|
283
|
MbedJSONValue * token[NB_TOKEN];
|
| samux |
0:0cf0e27feaad
|
284
|
std::string * token_name[NB_TOKEN];
|
| samux |
0:0cf0e27feaad
|
285
|
|
| samux |
0:0cf0e27feaad
|
286
|
//an object can contain an array of NB_TOKEN elements
|
| samux |
0:0cf0e27feaad
|
287
|
MbedJSONValue * array[NB_TOKEN];
|
| samux |
0:0cf0e27feaad
|
288
|
|
| samux |
0:0cf0e27feaad
|
289
|
// Clean up
|
| samux |
0:0cf0e27feaad
|
290
|
void clean();
|
| samux |
0:0cf0e27feaad
|
291
|
|
| samux |
0:0cf0e27feaad
|
292
|
union {
|
| samux |
0:0cf0e27feaad
|
293
|
bool asBool;
|
| samux |
0:0cf0e27feaad
|
294
|
int asInt;
|
| samux |
0:0cf0e27feaad
|
295
|
double asDouble;
|
| samux |
0:0cf0e27feaad
|
296
|
std::string* asString;
|
| samux |
0:0cf0e27feaad
|
297
|
} _value;
|
| samux |
0:0cf0e27feaad
|
298
|
|
| samux |
0:0cf0e27feaad
|
299
|
|
| samux |
0:0cf0e27feaad
|
300
|
MbedJSONValue& operator[](int i) const { return *(array[i]); }
|
| samux |
0:0cf0e27feaad
|
301
|
MbedJSONValue& operator[](std::string k) const;
|
| samux |
0:0cf0e27feaad
|
302
|
|
| samux |
0:0cf0e27feaad
|
303
|
std::string to_str();
|
| samux |
0:0cf0e27feaad
|
304
|
void serialize(std::back_insert_iterator<std::string> os);
|
| samux |
0:0cf0e27feaad
|
305
|
|
| samux |
0:0cf0e27feaad
|
306
|
};
|
| samux |
0:0cf0e27feaad
|
307
|
|
| samux |
0:0cf0e27feaad
|
308
|
|
| samux |
0:0cf0e27feaad
|
309
|
#define GET(ctype, var) \
|
| samux |
0:0cf0e27feaad
|
310
|
template <> inline const ctype& MbedJSONValue::get<ctype>() const { \
|
| samux |
0:0cf0e27feaad
|
311
|
return var; \
|
| samux |
0:0cf0e27feaad
|
312
|
} \
|
| samux |
0:0cf0e27feaad
|
313
|
template <> inline ctype& MbedJSONValue::get<ctype>() { \
|
| samux |
0:0cf0e27feaad
|
314
|
return var; \
|
| samux |
0:0cf0e27feaad
|
315
|
}
|
| samux |
0:0cf0e27feaad
|
316
|
GET(bool, _value.asBool)
|
| samux |
0:0cf0e27feaad
|
317
|
GET(double, _value.asDouble)
|
| samux |
0:0cf0e27feaad
|
318
|
GET(int, _value.asInt)
|
| samux |
0:0cf0e27feaad
|
319
|
GET(std::string, *_value.asString)
|
| samux |
0:0cf0e27feaad
|
320
|
#undef GET
|
| samux |
0:0cf0e27feaad
|
321
|
|
| samux |
0:0cf0e27feaad
|
322
|
|
| samux |
0:0cf0e27feaad
|
323
|
//Input class for JSON parser
|
| samux |
0:0cf0e27feaad
|
324
|
class input {
|
| samux |
0:0cf0e27feaad
|
325
|
protected:
|
| samux |
0:0cf0e27feaad
|
326
|
const char * cur_;
|
| samux |
0:0cf0e27feaad
|
327
|
const char * end_;
|
| samux |
0:0cf0e27feaad
|
328
|
int last_ch_;
|
| samux |
0:0cf0e27feaad
|
329
|
bool ungot_;
|
| samux |
0:0cf0e27feaad
|
330
|
int line_;
|
| samux |
0:0cf0e27feaad
|
331
|
public:
|
| samux |
0:0cf0e27feaad
|
332
|
input(const char * first, const char * last) : cur_(first), end_(last), last_ch_(-1), ungot_(false), line_(1) {};
|
| samux |
0:0cf0e27feaad
|
333
|
|
| samux |
0:0cf0e27feaad
|
334
|
int getc() {
|
| samux |
0:0cf0e27feaad
|
335
|
if (ungot_) {
|
| samux |
0:0cf0e27feaad
|
336
|
ungot_ = false;
|
| samux |
0:0cf0e27feaad
|
337
|
return last_ch_;
|
| samux |
0:0cf0e27feaad
|
338
|
}
|
| samux |
0:0cf0e27feaad
|
339
|
if (cur_ == end_) {
|
| samux |
0:0cf0e27feaad
|
340
|
last_ch_ = -1;
|
| samux |
0:0cf0e27feaad
|
341
|
return -1;
|
| samux |
0:0cf0e27feaad
|
342
|
}
|
| samux |
0:0cf0e27feaad
|
343
|
if (last_ch_ == '\n') {
|
| samux |
0:0cf0e27feaad
|
344
|
line_++;
|
| samux |
0:0cf0e27feaad
|
345
|
}
|
| samux |
0:0cf0e27feaad
|
346
|
last_ch_ = *cur_++ & 0xff;
|
| samux |
0:0cf0e27feaad
|
347
|
return last_ch_;
|
| samux |
0:0cf0e27feaad
|
348
|
}
|
| samux |
0:0cf0e27feaad
|
349
|
|
| samux |
0:0cf0e27feaad
|
350
|
void ungetc() {
|
| samux |
0:0cf0e27feaad
|
351
|
if (last_ch_ != -1) {
|
| samux |
0:0cf0e27feaad
|
352
|
ungot_ = true;
|
| samux |
0:0cf0e27feaad
|
353
|
}
|
| samux |
0:0cf0e27feaad
|
354
|
}
|
| samux |
0:0cf0e27feaad
|
355
|
|
| samux |
0:0cf0e27feaad
|
356
|
const char * cur() const {
|
| samux |
0:0cf0e27feaad
|
357
|
return cur_;
|
| samux |
0:0cf0e27feaad
|
358
|
}
|
| samux |
0:0cf0e27feaad
|
359
|
int line() const {
|
| samux |
0:0cf0e27feaad
|
360
|
return line_;
|
| samux |
0:0cf0e27feaad
|
361
|
}
|
| samux |
0:0cf0e27feaad
|
362
|
void skip_ws() {
|
| samux |
0:0cf0e27feaad
|
363
|
while (1) {
|
| samux |
0:0cf0e27feaad
|
364
|
int ch = getc();
|
| samux |
0:0cf0e27feaad
|
365
|
if (! (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r')) {
|
| samux |
0:0cf0e27feaad
|
366
|
ungetc();
|
| samux |
0:0cf0e27feaad
|
367
|
break;
|
| samux |
0:0cf0e27feaad
|
368
|
}
|
| samux |
0:0cf0e27feaad
|
369
|
}
|
| samux |
0:0cf0e27feaad
|
370
|
}
|
| samux |
0:0cf0e27feaad
|
371
|
int expect(int expect) {
|
| samux |
0:0cf0e27feaad
|
372
|
skip_ws();
|
| samux |
0:0cf0e27feaad
|
373
|
if (getc() != expect) {
|
| samux |
0:0cf0e27feaad
|
374
|
ungetc();
|
| samux |
0:0cf0e27feaad
|
375
|
return false;
|
| samux |
0:0cf0e27feaad
|
376
|
}
|
| samux |
0:0cf0e27feaad
|
377
|
return true;
|
| samux |
0:0cf0e27feaad
|
378
|
}
|
| samux |
0:0cf0e27feaad
|
379
|
bool match(const std::string& pattern) {
|
| samux |
0:0cf0e27feaad
|
380
|
for (std::string::const_iterator pi(pattern.begin());
|
| samux |
0:0cf0e27feaad
|
381
|
pi != pattern.end();
|
| samux |
0:0cf0e27feaad
|
382
|
++pi) {
|
| samux |
0:0cf0e27feaad
|
383
|
if (getc() != *pi) {
|
| samux |
0:0cf0e27feaad
|
384
|
ungetc();
|
| samux |
0:0cf0e27feaad
|
385
|
return false;
|
| samux |
0:0cf0e27feaad
|
386
|
}
|
| samux |
0:0cf0e27feaad
|
387
|
}
|
| samux |
0:0cf0e27feaad
|
388
|
return true;
|
| samux |
0:0cf0e27feaad
|
389
|
}
|
| samux |
0:0cf0e27feaad
|
390
|
};
|
| samux |
0:0cf0e27feaad
|
391
|
|
| samux |
0:0cf0e27feaad
|
392
|
|
| samux |
0:0cf0e27feaad
|
393
|
|
| samux |
0:0cf0e27feaad
|
394
|
inline const char * parse(MbedJSONValue& out, const char * first, const char * last, std::string* err);
|
| samux |
0:0cf0e27feaad
|
395
|
|
| samux |
0:0cf0e27feaad
|
396
|
/**
|
| samux |
0:0cf0e27feaad
|
397
|
* JSON string parser and creation of an MbedJSONValue
|
| samux |
0:0cf0e27feaad
|
398
|
*
|
| samux |
0:0cf0e27feaad
|
399
|
* @param out reference of an MbedJSONValue which will be filled according to the JSON string
|
| samux |
0:0cf0e27feaad
|
400
|
* @param str JSON string
|
| samux |
0:0cf0e27feaad
|
401
|
* @return A non empty string if there is a parsing error
|
| samux |
0:0cf0e27feaad
|
402
|
*
|
| samux |
0:0cf0e27feaad
|
403
|
*/
|
| samux |
0:0cf0e27feaad
|
404
|
|
| samux |
0:0cf0e27feaad
|
405
|
inline std::string parse(MbedJSONValue& out, const char * str);
|
| samux |
0:0cf0e27feaad
|
406
|
inline bool _parse(MbedJSONValue& out, input& in);
|
| samux |
0:0cf0e27feaad
|
407
|
inline bool _parse_number(MbedJSONValue& out, input& in);
|
| samux |
0:0cf0e27feaad
|
408
|
inline bool _parse_string(MbedJSONValue& out, input& in);
|
| samux |
0:0cf0e27feaad
|
409
|
inline bool _parse_array(MbedJSONValue& out, input& in);
|
| samux |
0:0cf0e27feaad
|
410
|
inline bool _parse_object(MbedJSONValue& out, input& in);
|
| samux |
0:0cf0e27feaad
|
411
|
|
| samux |
0:0cf0e27feaad
|
412
|
|
| samux |
0:0cf0e27feaad
|
413
|
inline bool _parse_string(MbedJSONValue& out, input& in) {
|
| samux |
0:0cf0e27feaad
|
414
|
#ifdef DEBUG
|
| samux |
0:0cf0e27feaad
|
415
|
printf("string detected\r\n");
|
| samux |
0:0cf0e27feaad
|
416
|
#endif
|
| samux |
0:0cf0e27feaad
|
417
|
out = MbedJSONValue(std::string(""));
|
| samux |
0:0cf0e27feaad
|
418
|
std::string& s = out.get<std::string>();
|
| samux |
0:0cf0e27feaad
|
419
|
while (1) {
|
| samux |
0:0cf0e27feaad
|
420
|
int ch = in.getc();
|
| samux |
0:0cf0e27feaad
|
421
|
if (ch < ' ') {
|
| samux |
0:0cf0e27feaad
|
422
|
in.ungetc();
|
| samux |
0:0cf0e27feaad
|
423
|
return false;
|
| samux |
0:0cf0e27feaad
|
424
|
} else if (ch == '"') {
|
| samux |
0:0cf0e27feaad
|
425
|
return true;
|
| samux |
0:0cf0e27feaad
|
426
|
} else if (ch == '\\') {
|
| samux |
0:0cf0e27feaad
|
427
|
if ((ch = in.getc()) == -1) {
|
| samux |
0:0cf0e27feaad
|
428
|
return false;
|
| samux |
0:0cf0e27feaad
|
429
|
}
|
| samux |
0:0cf0e27feaad
|
430
|
switch (ch) {
|
| samux |
0:0cf0e27feaad
|
431
|
#define MAP(sym, val) case sym: s.push_back(val); break
|
| samux |
0:0cf0e27feaad
|
432
|
MAP('"', '\"');
|
| samux |
0:0cf0e27feaad
|
433
|
MAP('\\', '\\');
|
| samux |
0:0cf0e27feaad
|
434
|
MAP('/', '/');
|
| samux |
0:0cf0e27feaad
|
435
|
MAP('b', '\b');
|
| samux |
0:0cf0e27feaad
|
436
|
MAP('f', '\f');
|
| samux |
0:0cf0e27feaad
|
437
|
MAP('n', '\n');
|
| samux |
0:0cf0e27feaad
|
438
|
MAP('r', '\r');
|
| samux |
0:0cf0e27feaad
|
439
|
MAP('t', '\t');
|
| samux |
0:0cf0e27feaad
|
440
|
#undef MAP
|
| samux |
0:0cf0e27feaad
|
441
|
default:
|
| samux |
0:0cf0e27feaad
|
442
|
return false;
|
| samux |
0:0cf0e27feaad
|
443
|
}
|
| samux |
0:0cf0e27feaad
|
444
|
} else {
|
| samux |
0:0cf0e27feaad
|
445
|
s.push_back(ch);
|
| samux |
0:0cf0e27feaad
|
446
|
}
|
| samux |
0:0cf0e27feaad
|
447
|
}
|
| samux |
0:0cf0e27feaad
|
448
|
}
|
| samux |
0:0cf0e27feaad
|
449
|
|
| samux |
0:0cf0e27feaad
|
450
|
inline bool _parse_array(MbedJSONValue& out, input& in) {
|
| samux |
0:0cf0e27feaad
|
451
|
#ifdef DEBUG
|
| samux |
0:0cf0e27feaad
|
452
|
printf("array detected\r\n");
|
| samux |
0:0cf0e27feaad
|
453
|
#endif
|
| samux |
0:0cf0e27feaad
|
454
|
int i = 0;
|
| samux |
0:0cf0e27feaad
|
455
|
if (in.expect(']')) {
|
| samux |
0:0cf0e27feaad
|
456
|
return true;
|
| samux |
0:0cf0e27feaad
|
457
|
}
|
| samux |
0:0cf0e27feaad
|
458
|
do {
|
| samux |
0:0cf0e27feaad
|
459
|
if (! _parse(out[i], in)) {
|
| samux |
0:0cf0e27feaad
|
460
|
return false;
|
| samux |
0:0cf0e27feaad
|
461
|
}
|
| samux |
0:0cf0e27feaad
|
462
|
i++;
|
| samux |
0:0cf0e27feaad
|
463
|
} while (in.expect(','));
|
| samux |
0:0cf0e27feaad
|
464
|
return in.expect(']');
|
| samux |
0:0cf0e27feaad
|
465
|
}
|
| samux |
0:0cf0e27feaad
|
466
|
|
| samux |
0:0cf0e27feaad
|
467
|
inline bool _parse_object(MbedJSONValue& out, input& in) {
|
| samux |
0:0cf0e27feaad
|
468
|
#ifdef DEBUG
|
| samux |
0:0cf0e27feaad
|
469
|
printf("object detected\r\n");
|
| samux |
0:0cf0e27feaad
|
470
|
#endif
|
| samux |
0:0cf0e27feaad
|
471
|
if (in.expect('}')) {
|
| samux |
0:0cf0e27feaad
|
472
|
return true;
|
| samux |
0:0cf0e27feaad
|
473
|
}
|
| samux |
0:0cf0e27feaad
|
474
|
do {
|
| samux |
0:0cf0e27feaad
|
475
|
MbedJSONValue key, val;
|
| samux |
0:0cf0e27feaad
|
476
|
if (in.expect('"') && _parse_string(key, in) && in.expect(':') && _parse(val, in)) {
|
| samux |
0:0cf0e27feaad
|
477
|
out[key.get<std::string>().c_str()] = val;
|
| samux |
0:0cf0e27feaad
|
478
|
#ifdef DEBUG
|
| samux |
0:0cf0e27feaad
|
479
|
printf("key: %s \r\n", key.get<std::string>().c_str());
|
| samux |
0:0cf0e27feaad
|
480
|
#endif
|
| samux |
0:0cf0e27feaad
|
481
|
} else {
|
| samux |
0:0cf0e27feaad
|
482
|
return false;
|
| samux |
0:0cf0e27feaad
|
483
|
}
|
| samux |
0:0cf0e27feaad
|
484
|
} while (in.expect(','));
|
| samux |
0:0cf0e27feaad
|
485
|
return in.expect('}');
|
| samux |
0:0cf0e27feaad
|
486
|
}
|
| samux |
0:0cf0e27feaad
|
487
|
|
| samux |
0:0cf0e27feaad
|
488
|
inline bool _parse_number(MbedJSONValue& out, input& in) {
|
| samux |
0:0cf0e27feaad
|
489
|
#ifdef DEBUG
|
| samux |
0:0cf0e27feaad
|
490
|
printf("number detected\r\n");
|
| samux |
0:0cf0e27feaad
|
491
|
#endif
|
| samux |
0:0cf0e27feaad
|
492
|
std::string num_str;
|
| samux |
0:0cf0e27feaad
|
493
|
while (1) {
|
| samux |
0:0cf0e27feaad
|
494
|
int ch = in.getc();
|
| samux |
0:0cf0e27feaad
|
495
|
if (('0' <= ch && ch <= '9') || ch == '+' || ch == '-' || ch == '.'
|
| samux |
0:0cf0e27feaad
|
496
|
|| ch == 'e' || ch == 'E') {
|
| samux |
0:0cf0e27feaad
|
497
|
num_str.push_back(ch);
|
| samux |
0:0cf0e27feaad
|
498
|
} else {
|
| samux |
0:0cf0e27feaad
|
499
|
in.ungetc();
|
| samux |
0:0cf0e27feaad
|
500
|
break;
|
| samux |
0:0cf0e27feaad
|
501
|
}
|
| samux |
0:0cf0e27feaad
|
502
|
}
|
| samux |
0:0cf0e27feaad
|
503
|
char* endp;
|
| samux |
0:0cf0e27feaad
|
504
|
if (strchr(num_str.c_str(), '.') != NULL || strchr(num_str.c_str(), 'e') != NULL || strchr(num_str.c_str(), '+') != NULL)
|
| samux |
0:0cf0e27feaad
|
505
|
out = MbedJSONValue(strtod(num_str.c_str(), &endp));
|
| samux |
0:0cf0e27feaad
|
506
|
else
|
| samux |
0:0cf0e27feaad
|
507
|
out = MbedJSONValue((int)strtod(num_str.c_str(), &endp));
|
| samux |
0:0cf0e27feaad
|
508
|
return endp == num_str.c_str() + num_str.size();
|
| samux |
0:0cf0e27feaad
|
509
|
}
|
| samux |
0:0cf0e27feaad
|
510
|
|
| samux |
0:0cf0e27feaad
|
511
|
inline bool _parse(MbedJSONValue& out, input& in) {
|
| samux |
0:0cf0e27feaad
|
512
|
in.skip_ws();
|
| samux |
0:0cf0e27feaad
|
513
|
int ch = in.getc();
|
| samux |
0:0cf0e27feaad
|
514
|
switch (ch) {
|
| samux |
0:0cf0e27feaad
|
515
|
#define IS(ch, text, val) case ch: \
|
| samux |
0:0cf0e27feaad
|
516
|
if (in.match(text)) { \
|
| samux |
0:0cf0e27feaad
|
517
|
out = val; \
|
| samux |
0:0cf0e27feaad
|
518
|
return true; \
|
| samux |
0:0cf0e27feaad
|
519
|
} else { \
|
| samux |
0:0cf0e27feaad
|
520
|
return false; \
|
| samux |
0:0cf0e27feaad
|
521
|
}
|
| samux |
0:0cf0e27feaad
|
522
|
IS('n', "ull", MbedJSONValue());
|
| samux |
0:0cf0e27feaad
|
523
|
IS('f', "alse", MbedJSONValue(false));
|
| samux |
0:0cf0e27feaad
|
524
|
IS('t', "rue", MbedJSONValue(true));
|
| samux |
0:0cf0e27feaad
|
525
|
#undef IS
|
| samux |
0:0cf0e27feaad
|
526
|
case '"':
|
| samux |
0:0cf0e27feaad
|
527
|
return _parse_string(out, in);
|
| samux |
0:0cf0e27feaad
|
528
|
case '[':
|
| samux |
0:0cf0e27feaad
|
529
|
return _parse_array(out, in);
|
| samux |
0:0cf0e27feaad
|
530
|
case '{':
|
| samux |
0:0cf0e27feaad
|
531
|
return _parse_object(out, in);
|
| samux |
0:0cf0e27feaad
|
532
|
default:
|
| samux |
0:0cf0e27feaad
|
533
|
if (('0' <= ch && ch <= '9') || ch == '-') {
|
| samux |
0:0cf0e27feaad
|
534
|
in.ungetc();
|
| samux |
0:0cf0e27feaad
|
535
|
return _parse_number(out, in);
|
| samux |
0:0cf0e27feaad
|
536
|
}
|
| samux |
0:0cf0e27feaad
|
537
|
break;
|
| samux |
0:0cf0e27feaad
|
538
|
}
|
| samux |
0:0cf0e27feaad
|
539
|
in.ungetc();
|
| samux |
0:0cf0e27feaad
|
540
|
return false;
|
| samux |
0:0cf0e27feaad
|
541
|
}
|
| samux |
0:0cf0e27feaad
|
542
|
|
| samux |
0:0cf0e27feaad
|
543
|
inline std::string parse(MbedJSONValue& out, const char * pos) {
|
| samux |
0:0cf0e27feaad
|
544
|
const char * last = pos + strlen(pos);
|
| samux |
0:0cf0e27feaad
|
545
|
std::string err;
|
| samux |
0:0cf0e27feaad
|
546
|
pos = parse(out, pos, last, &err);
|
| samux |
0:0cf0e27feaad
|
547
|
return err;
|
| samux |
0:0cf0e27feaad
|
548
|
}
|
| samux |
0:0cf0e27feaad
|
549
|
|
| samux |
0:0cf0e27feaad
|
550
|
inline const char * parse(MbedJSONValue& out, const char * first, const char * last, std::string* err) {
|
| samux |
0:0cf0e27feaad
|
551
|
input in = input(first, last);
|
| samux |
0:0cf0e27feaad
|
552
|
if (! _parse(out, in) && err != NULL) {
|
| samux |
0:0cf0e27feaad
|
553
|
char buf[64];
|
| samux |
0:0cf0e27feaad
|
554
|
sprintf(buf, "syntax error at line %d near: ", in.line());
|
| samux |
0:0cf0e27feaad
|
555
|
*err = buf;
|
| samux |
0:0cf0e27feaad
|
556
|
while (1) {
|
| samux |
0:0cf0e27feaad
|
557
|
int ch = in.getc();
|
| samux |
0:0cf0e27feaad
|
558
|
if (ch == -1 || ch == '\n') {
|
| samux |
0:0cf0e27feaad
|
559
|
break;
|
| samux |
0:0cf0e27feaad
|
560
|
} else if (ch >= ' ') {
|
| samux |
0:0cf0e27feaad
|
561
|
err->push_back(ch);
|
| samux |
0:0cf0e27feaad
|
562
|
}
|
| samux |
0:0cf0e27feaad
|
563
|
}
|
| samux |
0:0cf0e27feaad
|
564
|
}
|
| samux |
0:0cf0e27feaad
|
565
|
return in.cur();
|
| samux |
0:0cf0e27feaad
|
566
|
}
|
| samux |
0:0cf0e27feaad
|
567
|
|
| samux |
0:0cf0e27feaad
|
568
|
#endif // _MbedMbedJSONValue_H_
|