FM / util

/usr/local/include/osrm/util

Name	Size	Mode	Actions
alias.hpp	4983	0644	edit dl rm
bearing.hpp	3989	0644	edit dl rm
coordinate.hpp	9191	0644	edit dl rm
exception.hpp	5102	0644	edit dl rm
json_container.hpp	3774	0644	edit dl rm
typedefs.hpp	6996	0644	edit dl rm

Edit: /usr/local/include/osrm/util/json_container.hpp (3774B)

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// based on
// https://svn.apache.org/repos/asf/mesos/tags/release-0.9.0-incubating-RC0/src/common/json.hpp

#ifndef JSON_CONTAINER_HPP
#define JSON_CONTAINER_HPP

#include <mapbox/variant.hpp>

#include <string>
#include <unordered_map>
#include <utility>
#include <vector>

namespace osrm
{

namespace util
{

/**
 * JSON types representing OSRM responses.
 *
 * The json::Value type represents the basic sum-type, implemented as a variant.
 *
 * There are two ways for destructuring such types:
 *  - Either provide a visitor and use the apply_visitor function or
 *  - use the get function and explicitely specify the type
 *
 * See the following documentations on variants:
 *  - https://github.com/mapbox/variant
 *  - http://www.boost.org/doc/libs/1_55_0/doc/html/variant.html
 *
 * And take a look at the example we provide.
 *
 * \see OSRM
 */
namespace json
{

// fwd. decls.
struct Object;
struct Array;

/**
 * Typed string wrapper.
 *
 * Unwrap the type via its value member attribute.
 */
struct String
{
    String() = default;
    String(const char *value_) : value{value_} {}
    String(std::string value_) : value{std::move(value_)} {}
    std::string value;
};

/**
 * Typed floating point number.
 *
 * Unwrap the type via its value member attribute.
 */
struct Number
{
    Number() = default;
    Number(double value_) : value{value_} {}
    double value;
};

/**
 * Typed True.
 */
struct True
{
};

/**
 * Typed False.
 */
struct False
{
};

/**
 * Typed Null.
 */
struct Null
{
};

/**
 * Typed Value sum-type implemented as a variant able to represent tree-like JSON structures.
 *
 * Dispatch on its type by either by using apply_visitor or its get function.
 */
using Value = mapbox::util::variant<String,
                                    Number,
                                    mapbox::util::recursive_wrapper<Object>,
                                    mapbox::util::recursive_wrapper<Array>,
                                    True,
                                    False,
                                    Null>;

/**
 * Typed Object.
 *
 * Unwrap the key-value pairs holding type via its values member attribute.
 */
struct Object
{
    std::unordered_map<std::string, Value> values;
};

/**
 * Typed Array.
 *
 * Unwrap the Value holding type via its values member attribute.
 */
struct Array
{
    std::vector<Value> values;
};

} // namespace json
} // namespace util
} // namespace osrm

#endif // JSON_CONTAINER_HPP

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