LCOV - code coverage report
Current view: directory - ogr/ogrsf_frmts/geojson/jsonc - json_tokener.c (source / functions) Found Hit Coverage
Test: gdal_filtered.info Lines: 311 196 63.0 %
Date: 2012-12-26 Functions: 6 6 100.0 %

       1                 : /*
       2                 :  * $Id: json_tokener.c,v 1.20 2006/07/25 03:24:50 mclark Exp $
       3                 :  *
       4                 :  * Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd.
       5                 :  * Michael Clark <michael@metaparadigm.com>
       6                 :  *
       7                 :  * This library is free software; you can redistribute it and/or modify
       8                 :  * it under the terms of the MIT license. See COPYING for details.
       9                 :  *
      10                 :  *
      11                 :  * Copyright (c) 2008-2009 Yahoo! Inc.  All rights reserved.
      12                 :  * The copyrights to the contents of this file are licensed under the MIT License
      13                 :  * (http://www.opensource.org/licenses/mit-license.php)
      14                 :  */
      15                 : 
      16                 : #include "config.h"
      17                 : 
      18                 : #include "cpl_conv.h"
      19                 : 
      20                 : #include <stdio.h>
      21                 : #include <stdlib.h>
      22                 : #include <stddef.h>
      23                 : #include <ctype.h>
      24                 : #include <string.h>
      25                 : 
      26                 : #include "bits.h"
      27                 : #include "debug.h"
      28                 : #include "printbuf.h"
      29                 : #include "arraylist.h"
      30                 : #include "json_object.h"
      31                 : #include "json_tokener.h"
      32                 : 
      33                 : #include <cpl_port.h> /* MIN and MAX macros */
      34                 : 
      35                 : #if !HAVE_STRNCASECMP
      36                 : # if defined(_MSC_VER)
      37                 :    /* MSC has the version as _strnicmp */
      38                 : #  define strncasecmp _strnicmp
      39                 : # else
      40                 : #  error You do not have strncasecmp on your system.
      41                 : # endif
      42                 : #endif /* HAVE_STRNCASECMP */
      43                 : 
      44                 : 
      45                 : static const char* json_null_str = "null";
      46                 : static const char* json_true_str = "true";
      47                 : static const char* json_false_str = "false";
      48                 : 
      49                 : const char* json_tokener_errors[] = {
      50                 :   "success",
      51                 :   "continue",
      52                 :   "nesting to deep",
      53                 :   "unexpected end of data",
      54                 :   "unexpected character",
      55                 :   "null expected",
      56                 :   "boolean expected",
      57                 :   "number expected",
      58                 :   "array value separator ',' expected",
      59                 :   "quoted object property name expected",
      60                 :   "object property name separator ':' expected",
      61                 :   "object value separator ',' expected",
      62                 :   "invalid string sequence",
      63                 :   "expected comment",
      64                 : };
      65                 : 
      66                 : 
      67             220 : struct json_tokener* json_tokener_new(void)
      68                 : {
      69                 :   struct json_tokener *tok;
      70                 : 
      71             220 :   tok = (struct json_tokener*)calloc(1, sizeof(struct json_tokener));
      72             220 :   if (!tok) return NULL;
      73             220 :   tok->pb = printbuf_new();
      74             220 :   json_tokener_reset(tok);
      75             220 :   return tok;
      76                 : }
      77                 : 
      78             220 : void json_tokener_free(struct json_tokener *tok)
      79                 : {
      80             220 :   json_tokener_reset(tok);
      81             220 :   if(tok) printbuf_free(tok->pb);
      82             220 :   free(tok);
      83             220 : }
      84                 : 
      85           39664 : static void json_tokener_reset_level(struct json_tokener *tok, int depth)
      86                 : {
      87           39664 :   tok->stack[depth].state = json_tokener_state_eatws;
      88           39664 :   tok->stack[depth].saved_state = json_tokener_state_start;
      89           39664 :   json_object_put(tok->stack[depth].current);
      90           39664 :   tok->stack[depth].current = NULL;
      91           39664 :   free(tok->stack[depth].obj_field_name);
      92           39664 :   tok->stack[depth].obj_field_name = NULL;
      93           39664 : }
      94                 : 
      95             440 : void json_tokener_reset(struct json_tokener *tok)
      96                 : {
      97                 :   int i;
      98             440 :   if (!tok)
      99               0 :     return;
     100                 : 
     101             880 :   for(i = tok->depth; i >= 0; i--)
     102             440 :     json_tokener_reset_level(tok, i);
     103             440 :   tok->depth = 0;
     104             440 :   tok->err = json_tokener_success;
     105                 : }
     106                 : 
     107             114 : struct json_object* json_tokener_parse(const char *str)
     108                 : {
     109                 :   struct json_tokener* tok;
     110                 :   struct json_object* obj;
     111                 : 
     112             114 :   tok = json_tokener_new();
     113             114 :   obj = json_tokener_parse_ex(tok, str, -1);
     114             114 :   if(tok->err != json_tokener_success)
     115               0 :     obj = (struct json_object*)error_ptr(-tok->err);
     116             114 :   json_tokener_free(tok);
     117             114 :   return obj;
     118                 : }
     119                 : 
     120                 : 
     121                 : #if !HAVE_STRNDUP
     122                 : /* CAW: compliant version of strndup() */
     123                 : char* strndup(const char* str, size_t n)
     124                 : {
     125               0 :   if(str) {
     126               0 :     size_t len = strlen(str);
     127               0 :     size_t nn = json_min(len,n);
     128               0 :     char* s = (char*)malloc(sizeof(char) * (nn + 1));
     129                 : 
     130               0 :     if(s) {
     131               0 :       memcpy(s, str, nn);
     132               0 :       s[nn] = '\0';
     133                 :     }
     134                 : 
     135               0 :     return s;
     136                 :   }
     137                 : 
     138               0 :   return NULL;
     139                 : }
     140                 : #endif
     141                 : 
     142                 : 
     143                 : #define state  tok->stack[tok->depth].state
     144                 : #define saved_state  tok->stack[tok->depth].saved_state
     145                 : #define current tok->stack[tok->depth].current
     146                 : #define obj_field_name tok->stack[tok->depth].obj_field_name
     147                 : 
     148                 : /* Optimization:
     149                 :  * json_tokener_parse_ex() consumed a lot of CPU in its main loop,
     150                 :  * iterating character-by character.  A large performance boost is
     151                 :  * achieved by using tighter loops to locally handle units such as
     152                 :  * comments and strings.  Loops that handle an entire token within 
     153                 :  * their scope also gather entire strings and pass them to 
     154                 :  * printbuf_memappend() in a single call, rather than calling
     155                 :  * printbuf_memappend() one char at a time.
     156                 :  *
     157                 :  * POP_CHAR() and ADVANCE_CHAR() macros are used for code that is
     158                 :  * common to both the main loop and the tighter loops.
     159                 :  */
     160                 : 
     161                 : /* POP_CHAR(dest, tok) macro:
     162                 :  *   Not really a pop()...peeks at the current char and stores it in dest.
     163                 :  *   Returns 1 on success, sets tok->err and returns 0 if no more chars.
     164                 :  *   Implicit inputs:  str, len vars
     165                 :  */
     166                 : #define POP_CHAR(dest, tok)                                                  \
     167                 :   (((tok)->char_offset == len) ?                                          \
     168                 :    (((tok)->depth == 0 && state == json_tokener_state_eatws && saved_state == json_tokener_state_finish) ? \
     169                 :     (((tok)->err = json_tokener_success), 0)                              \
     170                 :     :                                                                   \
     171                 :     (((tok)->err = json_tokener_continue), 0)                             \
     172                 :     ) :                                                                 \
     173                 :    (((dest) = *str), 1)                                                 \
     174                 :    )
     175                 :  
     176                 : /* ADVANCE_CHAR() macro:
     177                 :  *   Incrementes str & tok->char_offset.
     178                 :  *   For convenience of existing conditionals, returns the old value of c (0 on eof)
     179                 :  *   Implicit inputs:  c var
     180                 :  */
     181                 : #define ADVANCE_CHAR(str, tok) \
     182                 :   ( ++(str), ((tok)->char_offset)++, c)
     183                 : 
     184                 : /* End optimization macro defs */
     185                 : 
     186                 : 
     187             220 : struct json_object* json_tokener_parse_ex(struct json_tokener *tok,
     188                 :             const char *str, int len)
     189                 : {
     190             220 :   struct json_object *obj = NULL;
     191             220 :   char c = '\1';
     192                 : 
     193             220 :   tok->char_offset = 0;
     194             220 :   tok->err = json_tokener_success;
     195                 : 
     196           46625 :   while (POP_CHAR(c, tok)) {
     197                 : 
     198                 :   redo_char:
     199          216357 :     switch(state) {
     200                 : 
     201                 :     case json_tokener_state_eatws:
     202                 :       /* Advance until we change state */
     203          191019 :       while (isspace(c)) {
     204           13587 :   if ((!ADVANCE_CHAR(str, tok)) || (!POP_CHAR(c, tok)))
     205                 :     goto out;
     206                 :       }
     207           88716 :       if(c == '/') {
     208               0 :   printbuf_reset(tok->pb);
     209               0 :   printbuf_memappend_fast(tok->pb, &c, 1);
     210               0 :   state = json_tokener_state_comment_start;
     211                 :       } else {
     212           88716 :   state = saved_state;
     213           88716 :   goto redo_char;
     214                 :       }
     215               0 :       break;
     216                 : 
     217                 :     case json_tokener_state_start:
     218           19832 :       switch(c) {
     219                 :       case '{':
     220            1271 :   state = json_tokener_state_eatws;
     221            1271 :   saved_state = json_tokener_state_object_field_start;
     222            1271 :   current = json_object_new_object();
     223            1271 :   break;
     224                 :       case '[':
     225            5115 :   state = json_tokener_state_eatws;
     226            5115 :   saved_state = json_tokener_state_array;
     227            5115 :   current = json_object_new_array();
     228            5115 :   break;
     229                 :       case 'N':
     230                 :       case 'n':
     231             102 :   state = json_tokener_state_null;
     232             102 :   printbuf_reset(tok->pb);
     233             102 :   tok->st_pos = 0;
     234             102 :   goto redo_char;
     235                 :       case '"':
     236                 :       case '\'':
     237            2246 :   state = json_tokener_state_string;
     238            2246 :   printbuf_reset(tok->pb);
     239            2246 :   tok->quote_char = c;
     240            2246 :   break;
     241                 :       case 'T':
     242                 :       case 't':
     243                 :       case 'F':
     244                 :       case 'f':
     245              15 :   state = json_tokener_state_boolean;
     246              15 :   printbuf_reset(tok->pb);
     247              15 :   tok->st_pos = 0;
     248              15 :   goto redo_char;
     249                 : #if defined(__GNUC__)
     250                 :     case '0' ... '9':
     251                 : #else
     252                 :     case '0':
     253                 :       case '1':
     254                 :       case '2':
     255                 :       case '3':
     256                 :       case '4':
     257                 :       case '5':
     258                 :       case '6':
     259                 :       case '7':
     260                 :       case '8':
     261                 :       case '9':
     262                 : #endif
     263                 :       case '-':
     264           11083 :   state = json_tokener_state_number;
     265           11083 :   printbuf_reset(tok->pb);
     266           11083 :   tok->is_double = 0;
     267           11083 :   goto redo_char;
     268                 :       default:
     269               0 :   tok->err = json_tokener_error_parse_unexpected;
     270               0 :   goto out;
     271                 :       }
     272            8632 :       break;
     273                 : 
     274                 :     case json_tokener_state_finish:
     275           19832 :       if(tok->depth == 0) goto out;
     276           19612 :       obj = json_object_get(current);
     277           19612 :       json_tokener_reset_level(tok, tok->depth);
     278           19612 :       tok->depth--;
     279           19612 :       goto redo_char;
     280                 : 
     281                 :     case json_tokener_state_null:
     282             510 :       printbuf_memappend_fast(tok->pb, &c, 1);
     283            1020 :       if(strncasecmp(json_null_str, tok->pb->buf,
     284            1020 :          json_min(tok->st_pos+1, strlen(json_null_str))) == 0) {
     285             510 :   if(tok->st_pos == strlen(json_null_str)) {
     286             102 :     current = NULL;
     287             102 :     saved_state = json_tokener_state_finish;
     288             102 :     state = json_tokener_state_eatws;
     289             102 :     goto redo_char;
     290                 :   }
     291                 :       } else {
     292               0 :   tok->err = json_tokener_error_parse_null;
     293               0 :   goto out;
     294                 :       }
     295             408 :       tok->st_pos++;
     296             408 :       break;
     297                 : 
     298                 :     case json_tokener_state_comment_start:
     299               0 :       if(c == '*') {
     300               0 :   state = json_tokener_state_comment;
     301               0 :       } else if(c == '/') {
     302               0 :   state = json_tokener_state_comment_eol;
     303                 :       } else {
     304               0 :   tok->err = json_tokener_error_parse_comment;
     305               0 :   goto out;
     306                 :       }
     307               0 :       printbuf_memappend_fast(tok->pb, &c, 1);
     308               0 :       break;
     309                 : 
     310                 :     case json_tokener_state_comment:
     311                 :               {
     312                 :           /* Advance until we change state */
     313               0 :           const char *case_start = str;
     314               0 :           while(c != '*') {
     315               0 :             if (!ADVANCE_CHAR(str, tok) || !POP_CHAR(c, tok)) {
     316               0 :               printbuf_memappend_fast(tok->pb, case_start, str-case_start);
     317               0 :               goto out;
     318                 :             } 
     319                 :           }
     320               0 :           printbuf_memappend_fast(tok->pb, case_start, 1+str-case_start);
     321               0 :           state = json_tokener_state_comment_end;
     322                 :         }
     323               0 :             break;
     324                 : 
     325                 :     case json_tokener_state_comment_eol:
     326                 :       {
     327                 :   /* Advance until we change state */
     328               0 :   const char *case_start = str;
     329               0 :   while(c != '\n') {
     330               0 :     if (!ADVANCE_CHAR(str, tok) || !POP_CHAR(c, tok)) {
     331               0 :       printbuf_memappend_fast(tok->pb, case_start, str-case_start);
     332               0 :       goto out;
     333                 :     }
     334                 :   }
     335               0 :   printbuf_memappend_fast(tok->pb, case_start, str-case_start);
     336                 :   MC_DEBUG("json_tokener_comment: %s\n", tok->pb->buf);
     337               0 :   state = json_tokener_state_eatws;
     338                 :       }
     339               0 :       break;
     340                 : 
     341                 :     case json_tokener_state_comment_end:
     342               0 :       printbuf_memappend_fast(tok->pb, &c, 1);
     343               0 :       if(c == '/') {
     344                 :   MC_DEBUG("json_tokener_comment: %s\n", tok->pb->buf);
     345               0 :   state = json_tokener_state_eatws;
     346                 :       } else {
     347               0 :   state = json_tokener_state_comment;
     348                 :       }
     349               0 :       break;
     350                 : 
     351                 :     case json_tokener_state_string:
     352                 :       {
     353                 :   /* Advance until we change state */
     354            2500 :   const char *case_start = str;
     355                 :   while(1) {
     356           41283 :     if(c == tok->quote_char) {
     357            2246 :       printbuf_memappend_fast(tok->pb, case_start, str-case_start);
     358            2246 :       current = json_object_new_string(tok->pb->buf);
     359            2246 :       saved_state = json_tokener_state_finish;
     360            2246 :       state = json_tokener_state_eatws;
     361            2246 :       break;
     362           39037 :     } else if(c == '\\') {
     363             254 :       printbuf_memappend_fast(tok->pb, case_start, str-case_start);
     364             254 :       saved_state = json_tokener_state_string;
     365             254 :       state = json_tokener_state_string_escape;
     366             254 :       break;
     367                 :     }
     368           38783 :     if (!ADVANCE_CHAR(str, tok) || !POP_CHAR(c, tok)) {
     369               0 :       printbuf_memappend_fast(tok->pb, case_start, str-case_start);
     370               0 :       goto out;
     371                 :     }
     372           38783 :   }
     373                 :       }
     374            2500 :       break;
     375                 : 
     376                 :     case json_tokener_state_string_escape:
     377             254 :       switch(c) {
     378                 :       case '"':
     379                 :       case '\\':
     380                 :       case '/':
     381             254 :   printbuf_memappend_fast(tok->pb, &c, 1);
     382             254 :   state = saved_state;
     383             254 :   break;
     384                 :       case 'b':
     385                 :       case 'n':
     386                 :       case 'r':
     387                 :       case 't':
     388               0 :   if(c == 'b') printbuf_memappend_fast(tok->pb, "\b", 1);
     389               0 :   else if(c == 'n') printbuf_memappend_fast(tok->pb, "\n", 1);
     390               0 :   else if(c == 'r') printbuf_memappend_fast(tok->pb, "\r", 1);
     391               0 :   else if(c == 't') printbuf_memappend_fast(tok->pb, "\t", 1);
     392               0 :   state = saved_state;
     393               0 :   break;
     394                 :       case 'u':
     395               0 :   tok->ucs_char = 0;
     396               0 :   tok->st_pos = 0;
     397               0 :   state = json_tokener_state_escape_unicode;
     398               0 :   break;
     399                 :       default:
     400               0 :   tok->err = json_tokener_error_parse_string;
     401               0 :   goto out;
     402                 :       }
     403             254 :       break;
     404                 : 
     405                 :     case json_tokener_state_escape_unicode:
     406                 :             /* Note that the following code is inefficient for handling large
     407                 :        * chunks of extended chars, calling printbuf_memappend() once
     408                 :        * for each multi-byte character of input.
     409                 :        * This is a good area for future optimization.
     410                 :        */
     411                 :   {
     412                 :     /* Advance until we change state */
     413                 :     while(1) {
     414               0 :       if(strchr(json_hex_chars, c)) {
     415               0 :         tok->ucs_char += ((unsigned int)hexdigit(c) << ((3-tok->st_pos++)*4));
     416               0 :         if(tok->st_pos == 4) {
     417                 :     unsigned char utf_out[3];
     418               0 :     if (tok->ucs_char < 0x80) {
     419               0 :       utf_out[0] = tok->ucs_char;
     420               0 :       printbuf_memappend_fast(tok->pb, (char*)utf_out, 1);
     421               0 :     } else if (tok->ucs_char < 0x800) {
     422               0 :       utf_out[0] = 0xc0 | (tok->ucs_char >> 6);
     423               0 :       utf_out[1] = 0x80 | (tok->ucs_char & 0x3f);
     424               0 :       printbuf_memappend_fast(tok->pb, (char*)utf_out, 2);
     425                 :     } else {
     426               0 :       utf_out[0] = 0xe0 | (tok->ucs_char >> 12);
     427               0 :       utf_out[1] = 0x80 | ((tok->ucs_char >> 6) & 0x3f);
     428               0 :       utf_out[2] = 0x80 | (tok->ucs_char & 0x3f);
     429               0 :       printbuf_memappend_fast(tok->pb, (char*)utf_out, 3);
     430                 :     }
     431               0 :     state = saved_state;
     432                 :     break;
     433                 :         }
     434                 :       } else {
     435               0 :         tok->err = json_tokener_error_parse_string;
     436               0 :         goto out;
     437                 :             }
     438               0 :     if (!ADVANCE_CHAR(str, tok) || !POP_CHAR(c, tok))
     439                 :       goto out;
     440               0 :   }
     441                 :       }
     442               0 :       break;
     443                 : 
     444                 :     case json_tokener_state_boolean:
     445              90 :       printbuf_memappend_fast(tok->pb, &c, 1);
     446             180 :       if(strncasecmp(json_true_str, tok->pb->buf,
     447             180 :          json_min(tok->st_pos+1, strlen(json_true_str))) == 0) {
     448               0 :   if(tok->st_pos == strlen(json_true_str)) {
     449               0 :     current = json_object_new_boolean(1);
     450               0 :     saved_state = json_tokener_state_finish;
     451               0 :     state = json_tokener_state_eatws;
     452               0 :     goto redo_char;
     453                 :   }
     454             180 :       } else if(strncasecmp(json_false_str, tok->pb->buf,
     455             180 :           json_min(tok->st_pos+1, strlen(json_false_str))) == 0) {
     456              90 :   if(tok->st_pos == strlen(json_false_str)) {
     457              15 :     current = json_object_new_boolean(0);
     458              15 :     saved_state = json_tokener_state_finish;
     459              15 :     state = json_tokener_state_eatws;
     460              15 :     goto redo_char;
     461                 :   }
     462                 :       } else {
     463               0 :   tok->err = json_tokener_error_parse_boolean;
     464               0 :   goto out;
     465                 :       }
     466              75 :       tok->st_pos++;
     467              75 :       break;
     468                 : 
     469                 :     case json_tokener_state_number:
     470                 :       {
     471                 :   /* Advance until we change state */
     472           11083 :   const char *case_start = str;
     473           11083 :   int case_len=0;
     474          124562 :   while(c && strchr(json_number_chars, c)) {
     475          102396 :     ++case_len;
     476          102396 :     if(c == '.' || c == 'e') tok->is_double = 1;
     477          102396 :     if (!ADVANCE_CHAR(str, tok) || !POP_CHAR(c, tok)) {
     478               0 :       printbuf_memappend_fast(tok->pb, case_start, case_len);
     479               0 :       goto out;
     480                 :     }
     481                 :   }
     482           11083 :         if (case_len>0)
     483           11083 :           printbuf_memappend_fast(tok->pb, case_start, case_len);
     484                 :       }
     485                 :       {
     486                 :         int numi;
     487                 :         double numd;
     488           11851 :         if(!tok->is_double && sscanf(tok->pb->buf, "%d", &numi) == 1) {
     489             768 :           current = json_object_new_int(numi);
     490           10315 :         } else if(tok->is_double) {
     491           10315 :           numd = CPLAtof(tok->pb->buf);
     492           10315 :           current = json_object_new_double(numd);
     493                 :         } else {
     494               0 :           tok->err = json_tokener_error_parse_number;
     495               0 :           goto out;
     496                 :         }
     497           11083 :         saved_state = json_tokener_state_finish;
     498           11083 :         state = json_tokener_state_eatws;
     499           11083 :         goto redo_char;
     500                 :       }
     501                 :       break;
     502                 : 
     503                 :     case json_tokener_state_array:
     504           14748 :       if(c == ']') {
     505              12 :   saved_state = json_tokener_state_finish;
     506              12 :   state = json_tokener_state_eatws;
     507                 :       } else {
     508           14736 :   if(tok->depth >= JSON_TOKENER_MAX_DEPTH-1) {
     509               0 :     tok->err = json_tokener_error_depth;
     510               0 :     goto out;
     511                 :   }
     512           14736 :   state = json_tokener_state_array_add;
     513           14736 :   tok->depth++;
     514           14736 :   json_tokener_reset_level(tok, tok->depth);
     515           14736 :   goto redo_char;
     516                 :       }
     517              12 :       break;
     518                 : 
     519                 :     case json_tokener_state_array_add:
     520           14736 :       json_object_array_add(current, obj);
     521           14736 :       saved_state = json_tokener_state_array_sep;
     522           14736 :       state = json_tokener_state_eatws;
     523           14736 :       goto redo_char;
     524                 : 
     525                 :     case json_tokener_state_array_sep:
     526           14736 :       if(c == ']') {
     527            5103 :   saved_state = json_tokener_state_finish;
     528            5103 :   state = json_tokener_state_eatws;
     529            9633 :       } else if(c == ',') {
     530            9633 :   saved_state = json_tokener_state_array;
     531            9633 :   state = json_tokener_state_eatws;
     532                 :       } else {
     533               0 :   tok->err = json_tokener_error_parse_array;
     534               0 :   goto out;
     535                 :       }
     536           14736 :       break;
     537                 : 
     538                 :     case json_tokener_state_object_field_start:
     539            4940 :       if(c == '}') {
     540              64 :   saved_state = json_tokener_state_finish;
     541              64 :   state = json_tokener_state_eatws;
     542            9752 :       } else if (c == '"' || c == '\'') {
     543            4876 :   tok->quote_char = c;
     544            4876 :   printbuf_reset(tok->pb);
     545            4876 :   state = json_tokener_state_object_field;
     546                 :       } else {
     547               0 :   tok->err = json_tokener_error_parse_object_key_name;
     548               0 :   goto out;
     549                 :       }
     550            4940 :       break;
     551                 : 
     552                 :     case json_tokener_state_object_field:
     553                 :       {
     554                 :   /* Advance until we change state */
     555            4876 :   const char *case_start = str;
     556                 :   while(1) {
     557           32424 :     if(c == tok->quote_char) {
     558            4876 :       printbuf_memappend_fast(tok->pb, case_start, str-case_start);
     559            4876 :       obj_field_name = strdup(tok->pb->buf);
     560            4876 :       saved_state = json_tokener_state_object_field_end;
     561            4876 :       state = json_tokener_state_eatws;
     562            4876 :       break;
     563           27548 :     } else if(c == '\\') {
     564               0 :       printbuf_memappend_fast(tok->pb, case_start, str-case_start);
     565               0 :       saved_state = json_tokener_state_object_field;
     566               0 :       state = json_tokener_state_string_escape;
     567               0 :       break;
     568                 :     }
     569           27548 :     if (!ADVANCE_CHAR(str, tok) || !POP_CHAR(c, tok)) {
     570               0 :       printbuf_memappend_fast(tok->pb, case_start, str-case_start);
     571               0 :       goto out;
     572                 :     }
     573           27548 :   }
     574                 :       }
     575            4876 :       break;
     576                 : 
     577                 :     case json_tokener_state_object_field_end:
     578            4876 :       if(c == ':') {
     579            4876 :   saved_state = json_tokener_state_object_value;
     580            4876 :   state = json_tokener_state_eatws;
     581                 :       } else {
     582               0 :   tok->err = json_tokener_error_parse_object_key_sep;
     583               0 :   goto out;
     584                 :       }
     585            4876 :       break;
     586                 : 
     587                 :     case json_tokener_state_object_value:
     588            4876 :       if(tok->depth >= JSON_TOKENER_MAX_DEPTH-1) {
     589               0 :   tok->err = json_tokener_error_depth;
     590               0 :   goto out;
     591                 :       }
     592            4876 :       state = json_tokener_state_object_value_add;
     593            4876 :       tok->depth++;
     594            4876 :       json_tokener_reset_level(tok, tok->depth);
     595            4876 :       goto redo_char;
     596                 : 
     597                 :     case json_tokener_state_object_value_add:
     598            4876 :       json_object_object_add(current, obj_field_name, obj);
     599            4876 :       free(obj_field_name);
     600            4876 :       obj_field_name = NULL;
     601            4876 :       saved_state = json_tokener_state_object_sep;
     602            4876 :       state = json_tokener_state_eatws;
     603            4876 :       goto redo_char;
     604                 : 
     605                 :     case json_tokener_state_object_sep:
     606            4876 :       if(c == '}') {
     607            1207 :   saved_state = json_tokener_state_finish;
     608            1207 :   state = json_tokener_state_eatws;
     609            3669 :       } else if(c == ',') {
     610            3669 :   saved_state = json_tokener_state_object_field_start;
     611            3669 :   state = json_tokener_state_eatws;
     612                 :       } else {
     613               0 :   tok->err = json_tokener_error_parse_object_value_sep;
     614               0 :   goto out;
     615                 :       }
     616                 :       break;
     617                 : 
     618                 :     }
     619           46185 :     if (!ADVANCE_CHAR(str, tok))
     620               0 :       goto out;
     621                 :   } /* while(POP_CHAR) */
     622                 : 
     623                 :  out:
     624             220 :   if (!c) { /* We hit an eof char (0) */
     625             220 :     if(state != json_tokener_state_finish &&
     626               0 :        saved_state != json_tokener_state_finish)
     627               0 :       tok->err = json_tokener_error_parse_eof;
     628                 :   }
     629                 : 
     630             220 :   if(tok->err == json_tokener_success) return json_object_get(current);
     631                 :   MC_DEBUG("json_tokener_parse_ex: error %s at offset %d\n",
     632                 :      json_tokener_errors[tok->err], tok->char_offset);
     633               0 :   return NULL;
     634                 : }

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