Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2             :  * vim: set ts=8 sts=4 et sw=4 tw=99:
       3             :  * This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef vm_JSONPrinter_h
       8             : #define vm_JSONPrinter_h
       9             : 
      10             : #include "mozilla/TimeStamp.h"
      11             : 
      12             : #include <stdio.h>
      13             : 
      14             : #include "js/TypeDecls.h"
      15             : #include "vm/Printer.h"
      16             : 
      17             : struct DtoaState;
      18             : 
      19             : namespace js {
      20             : 
      21             : class JSONPrinter
      22             : {
      23             :   protected:
      24             :     int indentLevel_;
      25             :     bool first_;
      26             :     GenericPrinter& out_;
      27             :     DtoaState* dtoaState_;
      28             : 
      29             :     void indent();
      30             : 
      31             :   public:
      32         179 :     explicit JSONPrinter(GenericPrinter& out)
      33         179 :       : indentLevel_(0),
      34             :         first_(true),
      35             :         out_(out),
      36         179 :         dtoaState_(nullptr)
      37             :     {
      38         179 :     }
      39             : 
      40             :     ~JSONPrinter();
      41             : 
      42             :     void beginObject();
      43             :     void beginObjectProperty(const char* name);
      44             :     void beginListProperty(const char* name);
      45             : 
      46             :     void value(const char* format, ...) MOZ_FORMAT_PRINTF(2, 3);
      47             :     void value(int value);
      48             : 
      49             :     void property(const char* name, const char* value);
      50             :     void property(const char* name, int32_t value);
      51             :     void property(const char* name, uint32_t value);
      52             :     void property(const char* name, int64_t value);
      53             :     void property(const char* name, uint64_t value);
      54             : #if defined(XP_DARWIN) || defined(__OpenBSD__)
      55             :     // On OSX and OpenBSD, size_t is long unsigned, uint32_t is unsigned, and
      56             :     // uint64_t is long long unsigned. Everywhere else, size_t matches either
      57             :     // uint32_t or uint64_t.
      58             :     void property(const char* name, size_t value);
      59             : #endif
      60             : 
      61             :     void formatProperty(const char* name, const char* format, ...) MOZ_FORMAT_PRINTF(3, 4);
      62             : 
      63             :     // JSON requires decimals to be separated by periods, but the LC_NUMERIC
      64             :     // setting may cause printf to use commas in some locales.
      65             :     enum TimePrecision { SECONDS, MILLISECONDS, MICROSECONDS };
      66             :     void property(const char* name, const mozilla::TimeDuration& dur, TimePrecision precision);
      67             : 
      68             :     void floatProperty(const char* name, double value, size_t precision);
      69             : 
      70             :     void beginStringProperty(const char* name);
      71             :     void endStringProperty();
      72             : 
      73             :     void endObject();
      74             :     void endList();
      75             : 
      76             :     // Notify the output that the caller has detected OOM and should transition
      77             :     // to its saw-OOM state.
      78             :     void outOfMemory() { out_.reportOutOfMemory(); }
      79             : 
      80             :   protected:
      81             :     void propertyName(const char* name);
      82             : };
      83             : 
      84             : } // namespace js
      85             : 
      86             : #endif /* vm_JSONPrinter_h */