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1 /* |
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2 * Copyright (c) 2009-2014 Petri Lehtinen <petri@digip.org> |
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3 * |
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4 * Jansson is free software; you can redistribute it and/or modify |
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5 * it under the terms of the MIT license. See LICENSE for details. |
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6 */ |
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7 |
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8 #ifndef JANSSON_PRIVATE_H |
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9 #define JANSSON_PRIVATE_H |
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10 |
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11 #include <stddef.h> |
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12 #include "jansson.h" |
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13 #include "hashtable.h" |
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14 #include "strbuffer.h" |
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15 |
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16 #define container_of(ptr_, type_, member_) \ |
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17 ((type_ *)((char *)ptr_ - offsetof(type_, member_))) |
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18 |
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19 /* On some platforms, max() may already be defined */ |
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20 #ifndef max |
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21 #define max(a, b) ((a) > (b) ? (a) : (b)) |
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22 #endif |
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23 |
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24 /* va_copy is a C99 feature. In C89 implementations, it's sometimes |
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25 available as __va_copy. If not, memcpy() should do the trick. */ |
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26 #ifndef va_copy |
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27 #ifdef __va_copy |
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28 #define va_copy __va_copy |
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29 #else |
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30 #define va_copy(a, b) memcpy(&(a), &(b), sizeof(va_list)) |
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31 #endif |
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32 #endif |
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33 |
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34 typedef struct { |
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35 json_t json; |
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36 hashtable_t hashtable; |
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37 size_t serial; |
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38 int visited; |
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39 } json_object_t; |
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40 |
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41 typedef struct { |
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42 json_t json; |
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43 size_t size; |
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44 size_t entries; |
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45 json_t **table; |
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46 int visited; |
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47 } json_array_t; |
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48 |
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49 typedef struct { |
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50 json_t json; |
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51 char *value; |
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52 size_t length; |
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53 } json_string_t; |
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54 |
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55 typedef struct { |
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56 json_t json; |
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57 double value; |
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58 } json_real_t; |
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59 |
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60 typedef struct { |
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61 json_t json; |
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62 json_int_t value; |
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63 } json_integer_t; |
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64 |
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65 #define json_to_object(json_) container_of(json_, json_object_t, json) |
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66 #define json_to_array(json_) container_of(json_, json_array_t, json) |
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67 #define json_to_string(json_) container_of(json_, json_string_t, json) |
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68 #define json_to_real(json_) container_of(json_, json_real_t, json) |
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69 #define json_to_integer(json_) container_of(json_, json_integer_t, json) |
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70 |
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71 /* Create a string by taking ownership of an existing buffer */ |
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72 json_t *jsonp_stringn_nocheck_own(const char *value, size_t len); |
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73 |
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74 /* Error message formatting */ |
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75 void jsonp_error_init(json_error_t *error, const char *source); |
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76 void jsonp_error_set_source(json_error_t *error, const char *source); |
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77 void jsonp_error_set(json_error_t *error, int line, int column, |
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78 size_t position, const char *msg, ...); |
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79 void jsonp_error_vset(json_error_t *error, int line, int column, |
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80 size_t position, const char *msg, va_list ap); |
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81 |
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82 /* Locale independent string<->double conversions */ |
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83 int jsonp_strtod(strbuffer_t *strbuffer, double *out); |
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84 int jsonp_dtostr(char *buffer, size_t size, double value, int prec); |
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85 |
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86 /* Wrappers for custom memory functions */ |
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87 void* jsonp_malloc(size_t size); |
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88 void jsonp_free(void *ptr); |
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89 char *jsonp_strndup(const char *str, size_t length); |
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90 char *jsonp_strdup(const char *str); |
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91 char *jsonp_strndup(const char *str, size_t len); |
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92 |
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93 /* Windows compatibility */ |
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94 #ifdef _WIN32 |
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95 #define snprintf _snprintf |
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96 #define vsnprintf _vsnprintf |
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97 #endif |
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98 |
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99 #endif |
