X-Git-Url: http://www.project-moonshot.org/gitweb/?a=blobdiff_plain;f=src%2Fvalue.c;h=937aa955fd84903e9940fa5e8d02742df0b9e163;hb=6ecba848171f48d0b3806dbc1aa306be8e69bc82;hp=01e180e1827d6b7783420aa00472e574f7e6d84d;hpb=2ad4634de51bd06c03d1ba5831247ed865c03506;p=jansson.git

diff --git a/src/value.c b/src/value.c
index 01e180e..937aa95 100644
--- a/src/value.c
+++ b/src/value.c
@@ -1,11 +1,13 @@
 /*
- * Copyright (c) 2009 Petri Lehtinen <petri@digip.org>
+ * Copyright (c) 2009-2011 Petri Lehtinen <petri@digip.org>
  *
  * Jansson is free software; you can redistribute it and/or modify
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
 #define _GNU_SOURCE
+
+#include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -13,10 +15,9 @@
 #include "hashtable.h"
 #include "jansson_private.h"
 #include "utf.h"
-#include "util.h"
 
 
-static inline void json_init(json_t *json, json_type type)
+static JSON_INLINE void json_init(json_t *json, json_type type)
 {
     json->type = type;
     json->refcount = 1;
@@ -25,13 +26,20 @@ static inline void json_init(json_t *json, json_type type)
 
 /*** object ***/
 
-static unsigned int hash_string(const void *key)
+/* This macro just returns a pointer that's a few bytes backwards from
+   string. This makes it possible to pass a pointer to object_key_t
+   when only the string inside it is used, without actually creating
+   an object_key_t instance. */
+#define string_to_key(string)  container_of(string, object_key_t, key)
+
+size_t jsonp_hash_key(const void *ptr)
 {
-    const char *str = (const char *)key;
-    unsigned int hash = 5381;
-    unsigned int c;
+    const char *str = ((const object_key_t *)ptr)->key;
 
-    while((c = (unsigned int)*str))
+    size_t hash = 5381;
+    size_t c;
+
+    while((c = (size_t)*str))
     {
         hash = ((hash << 5) + hash) + c;
         str++;
@@ -40,9 +48,10 @@ static unsigned int hash_string(const void *key)
     return hash;
 }
 
-static int string_equal(const void *key1, const void *key2)
+int jsonp_key_equal(const void *ptr1, const void *ptr2)
 {
-    return strcmp((const char *)key1, (const char *)key2) == 0;
+    return strcmp(((const object_key_t *)ptr1)->key,
+                  ((const object_key_t *)ptr2)->key) == 0;
 }
 
 static void value_decref(void *value)
@@ -52,18 +61,20 @@ static void value_decref(void *value)
 
 json_t *json_object(void)
 {
-    json_object_t *object = malloc(sizeof(json_object_t));
+    json_object_t *object = jsonp_malloc(sizeof(json_object_t));
     if(!object)
         return NULL;
     json_init(&object->json, JSON_OBJECT);
 
-    if(hashtable_init(&object->hashtable, hash_string, string_equal,
-                      free, value_decref))
+    if(hashtable_init(&object->hashtable,
+                      jsonp_hash_key, jsonp_key_equal,
+                      jsonp_free, value_decref))
     {
-        free(object);
+        jsonp_free(object);
         return NULL;
     }
 
+    object->serial = 0;
     object->visited = 0;
 
     return &object->json;
@@ -72,15 +83,15 @@ json_t *json_object(void)
 static void json_delete_object(json_object_t *object)
 {
     hashtable_close(&object->hashtable);
-    free(object);
+    jsonp_free(object);
 }
 
-unsigned int json_object_size(const json_t *json)
+size_t json_object_size(const json_t *json)
 {
     json_object_t *object;
 
     if(!json_is_object(json))
-        return -1;
+        return 0;
 
     object = json_to_object(json);
     return object->hashtable.size;
@@ -94,12 +105,13 @@ json_t *json_object_get(const json_t *json, const char *key)
         return NULL;
 
     object = json_to_object(json);
-    return hashtable_get(&object->hashtable, key);
+    return hashtable_get(&object->hashtable, string_to_key(key));
 }
 
 int json_object_set_new_nocheck(json_t *json, const char *key, json_t *value)
 {
     json_object_t *object;
+    object_key_t *k;
 
     if(!key || !value)
         return -1;
@@ -111,7 +123,17 @@ int json_object_set_new_nocheck(json_t *json, const char *key, json_t *value)
     }
     object = json_to_object(json);
 
-    if(hashtable_set(&object->hashtable, strdup(key), value))
+    /* offsetof(...) returns the size of object_key_t without the
+       last, flexible member. This way, the correct amount is
+       allocated. */
+    k = jsonp_malloc(offsetof(object_key_t, key) + strlen(key) + 1);
+    if(!k)
+        return -1;
+
+    k->serial = object->serial++;
+    strcpy(k->key, key);
+
+    if(hashtable_set(&object->hashtable, k, value))
     {
         json_decref(value);
         return -1;
@@ -139,7 +161,7 @@ int json_object_del(json_t *json, const char *key)
         return -1;
 
     object = json_to_object(json);
-    return hashtable_del(&object->hashtable, key);
+    return hashtable_del(&object->hashtable, string_to_key(key));
 }
 
 int json_object_clear(json_t *json)
@@ -190,6 +212,17 @@ void *json_object_iter(json_t *json)
     return hashtable_iter(&object->hashtable);
 }
 
+void *json_object_iter_at(json_t *json, const char *key)
+{
+    json_object_t *object;
+
+    if(!key || !json_is_object(json))
+        return NULL;
+
+    object = json_to_object(json);
+    return hashtable_iter_at(&object->hashtable, string_to_key(key));
+}
+
 void *json_object_iter_next(json_t *json, void *iter)
 {
     json_object_t *object;
@@ -201,12 +234,20 @@ void *json_object_iter_next(json_t *json, void *iter)
     return hashtable_iter_next(&object->hashtable, iter);
 }
 
+const object_key_t *jsonp_object_iter_fullkey(void *iter)
+{
+    if(!iter)
+        return NULL;
+
+    return hashtable_iter_key(iter);
+}
+
 const char *json_object_iter_key(void *iter)
 {
     if(!iter)
         return NULL;
 
-    return (const char *)hashtable_iter_key(iter);
+    return jsonp_object_iter_fullkey(iter)->key;
 }
 
 json_t *json_object_iter_value(void *iter)
@@ -217,6 +258,19 @@ json_t *json_object_iter_value(void *iter)
     return (json_t *)hashtable_iter_value(iter);
 }
 
+int json_object_iter_set_new(json_t *json, void *iter, json_t *value)
+{
+    json_object_t *object;
+
+    if(!json_is_object(json) || !iter || !value)
+        return -1;
+
+    object = json_to_object(json);
+    hashtable_iter_set(&object->hashtable, iter, value);
+
+    return 0;
+}
+
 static int json_object_equal(json_t *object1, json_t *object2)
 {
     void *iter;
@@ -298,7 +352,7 @@ static json_t *json_object_deep_copy(json_t *object)
 
 json_t *json_array(void)
 {
-    json_array_t *array = malloc(sizeof(json_array_t));
+    json_array_t *array = jsonp_malloc(sizeof(json_array_t));
     if(!array)
         return NULL;
     json_init(&array->json, JSON_ARRAY);
@@ -306,9 +360,9 @@ json_t *json_array(void)
     array->entries = 0;
     array->size = 8;
 
-    array->table = malloc(array->size * sizeof(json_t *));
+    array->table = jsonp_malloc(array->size * sizeof(json_t *));
     if(!array->table) {
-        free(array);
+        jsonp_free(array);
         return NULL;
     }
 
@@ -319,16 +373,16 @@ json_t *json_array(void)
 
 static void json_delete_array(json_array_t *array)
 {
-    unsigned int i;
+    size_t i;
 
     for(i = 0; i < array->entries; i++)
         json_decref(array->table[i]);
 
-    free(array->table);
-    free(array);
+    jsonp_free(array->table);
+    jsonp_free(array);
 }
 
-unsigned int json_array_size(const json_t *json)
+size_t json_array_size(const json_t *json)
 {
     if(!json_is_array(json))
         return 0;
@@ -336,7 +390,7 @@ unsigned int json_array_size(const json_t *json)
     return json_to_array(json)->entries;
 }
 
-json_t *json_array_get(const json_t *json, unsigned int index)
+json_t *json_array_get(const json_t *json, size_t index)
 {
     json_array_t *array;
     if(!json_is_array(json))
@@ -349,7 +403,7 @@ json_t *json_array_get(const json_t *json, unsigned int index)
     return array->table[index];
 }
 
-int json_array_set_new(json_t *json, unsigned int index, json_t *value)
+int json_array_set_new(json_t *json, size_t index, json_t *value)
 {
     json_array_t *array;
 
@@ -375,24 +429,24 @@ int json_array_set_new(json_t *json, unsigned int index, json_t *value)
     return 0;
 }
 
-static void array_move(json_array_t *array, unsigned int dest,
-                       unsigned int src, unsigned int count)
+static void array_move(json_array_t *array, size_t dest,
+                       size_t src, size_t count)
 {
     memmove(&array->table[dest], &array->table[src], count * sizeof(json_t *));
 }
 
-static void array_copy(json_t **dest, unsigned int dpos,
-                       json_t **src, unsigned int spos,
-                       unsigned int count)
+static void array_copy(json_t **dest, size_t dpos,
+                       json_t **src, size_t spos,
+                       size_t count)
 {
     memcpy(&dest[dpos], &src[spos], count * sizeof(json_t *));
 }
 
 static json_t **json_array_grow(json_array_t *array,
-                                unsigned int amount,
+                                size_t amount,
                                 int copy)
 {
-    unsigned int new_size;
+    size_t new_size;
     json_t **old_table, **new_table;
 
     if(array->entries + amount <= array->size)
@@ -401,7 +455,7 @@ static json_t **json_array_grow(json_array_t *array,
     old_table = array->table;
 
     new_size = max(array->size + amount, array->size * 2);
-    new_table = malloc(new_size * sizeof(json_t *));
+    new_table = jsonp_malloc(new_size * sizeof(json_t *));
     if(!new_table)
         return NULL;
 
@@ -410,7 +464,7 @@ static json_t **json_array_grow(json_array_t *array,
 
     if(copy) {
         array_copy(array->table, 0, old_table, 0, array->entries);
-        free(old_table);
+        jsonp_free(old_table);
         return array->table;
     }
 
@@ -442,7 +496,7 @@ int json_array_append_new(json_t *json, json_t *value)
     return 0;
 }
 
-int json_array_insert_new(json_t *json, unsigned int index, json_t *value)
+int json_array_insert_new(json_t *json, size_t index, json_t *value)
 {
     json_array_t *array;
     json_t **old_table;
@@ -471,7 +525,7 @@ int json_array_insert_new(json_t *json, unsigned int index, json_t *value)
         array_copy(array->table, 0, old_table, 0, index);
         array_copy(array->table, index + 1, old_table, index,
                    array->entries - index);
-        free(old_table);
+        jsonp_free(old_table);
     }
     else
         array_move(array, index + 1, index, array->entries - index);
@@ -482,7 +536,7 @@ int json_array_insert_new(json_t *json, unsigned int index, json_t *value)
     return 0;
 }
 
-int json_array_remove(json_t *json, unsigned int index)
+int json_array_remove(json_t *json, size_t index)
 {
     json_array_t *array;
 
@@ -504,7 +558,7 @@ int json_array_remove(json_t *json, unsigned int index)
 int json_array_clear(json_t *json)
 {
     json_array_t *array;
-    unsigned int i;
+    size_t i;
 
     if(!json_is_array(json))
         return -1;
@@ -520,7 +574,7 @@ int json_array_clear(json_t *json)
 int json_array_extend(json_t *json, json_t *other_json)
 {
     json_array_t *array, *other;
-    unsigned int i;
+    size_t i;
 
     if(!json_is_array(json) || !json_is_array(other_json))
         return -1;
@@ -541,7 +595,7 @@ int json_array_extend(json_t *json, json_t *other_json)
 
 static int json_array_equal(json_t *array1, json_t *array2)
 {
-    unsigned int i, size;
+    size_t i, size;
 
     size = json_array_size(array1);
     if(size != json_array_size(array2))
@@ -564,7 +618,7 @@ static int json_array_equal(json_t *array1, json_t *array2)
 static json_t *json_array_copy(json_t *array)
 {
     json_t *result;
-    unsigned int i;
+    size_t i;
 
     result = json_array();
     if(!result)
@@ -579,7 +633,7 @@ static json_t *json_array_copy(json_t *array)
 static json_t *json_array_deep_copy(json_t *array)
 {
     json_t *result;
-    unsigned int i;
+    size_t i;
 
     result = json_array();
     if(!result)
@@ -600,14 +654,14 @@ json_t *json_string_nocheck(const char *value)
     if(!value)
         return NULL;
 
-    string = malloc(sizeof(json_string_t));
+    string = jsonp_malloc(sizeof(json_string_t));
     if(!string)
         return NULL;
     json_init(&string->json, JSON_STRING);
 
-    string->value = strdup(value);
+    string->value = jsonp_strdup(value);
     if(!string->value) {
-        free(string);
+        jsonp_free(string);
         return NULL;
     }
 
@@ -635,12 +689,12 @@ int json_string_set_nocheck(json_t *json, const char *value)
     char *dup;
     json_string_t *string;
 
-    dup = strdup(value);
+    dup = jsonp_strdup(value);
     if(!dup)
         return -1;
 
     string = json_to_string(json);
-    free(string->value);
+    jsonp_free(string->value);
     string->value = dup;
 
     return 0;
@@ -656,8 +710,8 @@ int json_string_set(json_t *json, const char *value)
 
 static void json_delete_string(json_string_t *string)
 {
-    free(string->value);
-    free(string);
+    jsonp_free(string->value);
+    jsonp_free(string);
 }
 
 static int json_string_equal(json_t *string1, json_t *string2)
@@ -673,9 +727,9 @@ static json_t *json_string_copy(json_t *string)
 
 /*** integer ***/
 
-json_t *json_integer(int value)
+json_t *json_integer(json_int_t value)
 {
-    json_integer_t *integer = malloc(sizeof(json_integer_t));
+    json_integer_t *integer = jsonp_malloc(sizeof(json_integer_t));
     if(!integer)
         return NULL;
     json_init(&integer->json, JSON_INTEGER);
@@ -684,7 +738,7 @@ json_t *json_integer(int value)
     return &integer->json;
 }
 
-int json_integer_value(const json_t *json)
+json_int_t json_integer_value(const json_t *json)
 {
     if(!json_is_integer(json))
         return 0;
@@ -692,7 +746,7 @@ int json_integer_value(const json_t *json)
     return json_to_integer(json)->value;
 }
 
-int json_integer_set(json_t *json, int value)
+int json_integer_set(json_t *json, json_int_t value)
 {
     if(!json_is_integer(json))
         return -1;
@@ -704,7 +758,7 @@ int json_integer_set(json_t *json, int value)
 
 static void json_delete_integer(json_integer_t *integer)
 {
-    free(integer);
+    jsonp_free(integer);
 }
 
 static int json_integer_equal(json_t *integer1, json_t *integer2)
@@ -722,7 +776,7 @@ static json_t *json_integer_copy(json_t *integer)
 
 json_t *json_real(double value)
 {
-    json_real_t *real = malloc(sizeof(json_real_t));
+    json_real_t *real = jsonp_malloc(sizeof(json_real_t));
     if(!real)
         return NULL;
     json_init(&real->json, JSON_REAL);
@@ -751,7 +805,7 @@ int json_real_set(json_t *json, double value)
 
 static void json_delete_real(json_real_t *real)
 {
-    free(real);
+    jsonp_free(real);
 }
 
 static int json_real_equal(json_t *real1, json_t *real2)
@@ -782,30 +836,21 @@ double json_number_value(const json_t *json)
 
 json_t *json_true(void)
 {
-    static json_t the_true = {
-        .type = JSON_TRUE,
-        .refcount = (unsigned int)1
-    };
+    static json_t the_true = {JSON_TRUE, (size_t)-1};
     return &the_true;
 }
 
 
 json_t *json_false(void)
 {
-    static json_t the_false = {
-        .type = JSON_FALSE,
-        .refcount = (unsigned int)1
-    };
+    static json_t the_false = {JSON_FALSE, (size_t)-1};
     return &the_false;
 }
 
 
 json_t *json_null(void)
 {
-    static json_t the_null = {
-        .type = JSON_NULL,
-        .refcount = (unsigned int)1
-    };
+    static json_t the_null = {JSON_NULL, (size_t)-1};
     return &the_null;
 }