js/src/json.h

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   3  *
   4  * The contents of this file are subject to the Mozilla Public License Version
   5  * 1.1 (the "License"); you may not use this file except in compliance with
   6  * the License. You may obtain a copy of the License at
   7  * http://www.mozilla.org/MPL/
   8  *
   9  * Software distributed under the License is distributed on an "AS IS" basis,
  10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11  * for the specific language governing rights and limitations under the
  12  * License.
  13  *
  14  * The Original Code is SpiderMonkey JSON.
  15  *
  16  * The Initial Developer of the Original Code is
  17  * Mozilla Corporation.
  18  * Portions created by the Initial Developer are Copyright (C) 1998-1999
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Robert Sayre <sayrer@gmail.com>
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either of the GNU General Public License Version 2 or later (the "GPL"),
  26  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
  29  * under the terms of either the GPL or the LGPL, and not to allow others to
  30  * use your version of this file under the terms of the MPL, indicate your
  31  * decision by deleting the provisions above and replace them with the notice
  32  * and other provisions required by the GPL or the LGPL. If you do not delete
  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #ifndef json_h___
  39 #define json_h___
  40 /*
  41  * JS JSON functions.
  42  */
  43
  44 #define JSON_MAX_DEPTH  2048
  45 #define JSON_PARSER_BUFSIZE 1024
  46
  47 JS_BEGIN_EXTERN_C
  48
  49 extern JSClass js_JSONClass;
  50
  51 extern JSObject *
  52 js_InitJSONClass(JSContext *cx, JSObject *obj);
  53
  54 extern JSBool
  55 js_Stringify(JSContext *cx, jsval *vp, JSObject *replacer,
  56              JSONWriteCallback callback, void *data, uint32 depth);
  57
  58 extern JSBool js_TryJSON(JSContext *cx, jsval *vp);
  59
  60 enum JSONParserState {
  61     JSON_PARSE_STATE_INIT,
  62     JSON_PARSE_STATE_OBJECT_VALUE,
  63     JSON_PARSE_STATE_VALUE,
  64     JSON_PARSE_STATE_OBJECT,
  65     JSON_PARSE_STATE_OBJECT_PAIR,
  66     JSON_PARSE_STATE_OBJECT_IN_PAIR,
  67     JSON_PARSE_STATE_ARRAY,
  68     JSON_PARSE_STATE_STRING,
  69     JSON_PARSE_STATE_STRING_ESCAPE,
  70     JSON_PARSE_STATE_STRING_HEX,
  71     JSON_PARSE_STATE_NUMBER,
  72     JSON_PARSE_STATE_KEYWORD,
  73     JSON_PARSE_STATE_FINISHED
  74 };
  75
  76 enum JSONDataType {
  77     JSON_DATA_STRING,
  78     JSON_DATA_KEYSTRING,
  79     JSON_DATA_NUMBER,
  80     JSON_DATA_KEYWORD
  81 };
  82
  83 struct JSONParser {
  84     /* Used while handling \uNNNN in strings */
  85     jschar hexChar;
  86     uint8 numHex;
  87
  88     JSONParserState *statep;
  89     JSONParserState stateStack[JSON_MAX_DEPTH];
  90     jsval *rootVal;
  91     JSString *objectKey;
  92     JSStringBuffer *buffer;
  93     JSObject *objectStack;
  94 };
  95
  96 extern JSONParser *
  97 js_BeginJSONParse(JSContext *cx, jsval *rootVal);
  98
  99 extern JSBool
 100 js_ConsumeJSONText(JSContext *cx, JSONParser *jp, const jschar *data, uint32 len);
 101
 102 extern JSBool
 103 js_FinishJSONParse(JSContext *cx, JSONParser *jp);
 104
 105 JS_END_EXTERN_C
 106
 107 #endif /* json_h___ */