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/* vim: set et ts=3 sw=3 sts=3 ft=c:
* * Copyright (C) 2012, 2013, 2014 James McLaughlin et al. All rights reserved. * https://github.com/udp/json-parser
* * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR 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_H
#define _JSON_H
#ifndef json_char
#define json_char char
#endif
#ifndef json_int_t
#ifndef _MSC_VER
#include <inttypes.h>
#define json_int_t int64_t
#else
#define json_int_t __int64
#endif
#endif
#include <stdlib.h>
#ifdef __cplusplus
#include <string.h>
extern "C" {
#endif
typedef struct{ unsigned long max_memory; int settings;
/* Custom allocator support (leave null to use malloc/free)
*/
void * (* mem_alloc) (size_t, int zero, void * user_data); void (* mem_free) (void *, void * user_data);
void * user_data; /* will be passed to mem_alloc and mem_free */
size_t value_extra; /* how much extra space to allocate for values? */
} json_settings;
#define json_enable_comments 0x01
typedef enum{ json_none, json_object, json_array, json_integer, json_double, json_string, json_boolean, json_null
} json_type;
extern const struct _json_value json_value_none; typedef struct _json_object_entry{ json_char * name; unsigned int name_length; struct _json_value * value; } json_object_entry;
typedef struct _json_value{ struct _json_value * parent;
json_type type;
union { int boolean; json_int_t integer; double dbl;
struct { unsigned int length; json_char * ptr; /* null terminated */
} string;
struct { unsigned int length;
json_object_entry * values;
#if defined(__cplusplus) && __cplusplus >= 201103L
decltype(values) begin () const { return values; } decltype(values) end () const { return values + length; } #endif
} object;
struct { unsigned int length; struct _json_value ** values;
#if defined(__cplusplus) && __cplusplus >= 201103L
decltype(values) begin () const { return values; } decltype(values) end () const { return values + length; } #endif
} array;
} u;
union { struct _json_value * next_alloc; void * object_mem;
} _reserved;
#ifdef JSON_TRACK_SOURCE
/* Location of the value in the source JSON
*/ unsigned int line, col;
#endif
/* Some C++ operator sugar */
#ifdef __cplusplus
public:
inline _json_value () { memset (this, 0, sizeof (_json_value)); }
inline const struct _json_value &operator [] (int index) const { if (type != json_array || index < 0 || ((unsigned int) index) >= u.array.length) { return json_value_none; }
return *u.array.values [index]; }
inline const struct _json_value &operator [] (const char * index) const { if (type != json_object) return json_value_none;
for (unsigned int i = 0; i < u.object.length; ++ i) if (!strcmp (u.object.values [i].name, index)) return *u.object.values [i].value;
return json_value_none; }
inline operator const char * () const { switch (type) { case json_string: return u.string.ptr;
default: return ""; }; }
inline operator json_int_t () const { switch (type) { case json_integer: return u.integer;
case json_double: return (json_int_t) u.dbl;
default: return 0; }; }
inline operator bool () const { if (type != json_boolean) return false;
return u.boolean != 0; }
inline operator double () const { switch (type) { case json_integer: return (double) u.integer;
case json_double: return u.dbl;
default: return 0; }; }
#endif
} json_value; json_value * json_parse (const json_char * json, size_t length);
#define json_error_max 128
json_value * json_parse_ex (json_settings * settings, const json_char * json, size_t length, char * error);
void json_value_free (json_value *);
/* Not usually necessary, unless you used a custom mem_alloc and now want to
* use a custom mem_free. */void json_value_free_ex (json_settings * settings, json_value *);
#ifdef __cplusplus
} /* extern "C" */#endif
#endif
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