update stats APIs to use TimePoint vs Duration correctly

[folly.git] / folly / json.h

diff --git a/folly/json.h b/folly/json.h
index 87d006627351dd5ffbfffed7164de5ff55f22a7f..158352471f264682c858ca717a71df04985e9fdb 100644 (file)
--- a/folly/json.h
+++ b/folly/json.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012 Facebook, Inc.
+ * Copyright 2016 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -38,12 +38,13 @@
  * @author Jordan DeLong <delong.j@fb.com>
  */
 
-#ifndef FOLLY_JSON_H_
-#define FOLLY_JSON_H_
+#pragma once
 
-#include "folly/dynamic.h"
-#include "folly/FBString.h"
-#include "folly/Range.h"
+#include <iosfwd>
+#include <string>
+
+#include <folly/dynamic.h>
+#include <folly/Range.h>
 
 namespace folly {
 
@@ -53,12 +54,20 @@ namespace json {
 
   struct serialization_opts {
     explicit serialization_opts()
-      : allow_non_string_keys(false)
-      , javascript_safe(false)
-      , pretty_formatting(false)
-      , encode_non_ascii(false)
-      , validate_utf8(false)
-    {}
+        : allow_non_string_keys(false),
+          javascript_safe(false),
+          pretty_formatting(false),
+          encode_non_ascii(false),
+          validate_utf8(false),
+          allow_trailing_comma(false),
+          sort_keys(false),
+          skip_invalid_utf8(false),
+          allow_nan_inf(false),
+          double_mode(double_conversion::DoubleToStringConverter::SHORTEST),
+          double_num_digits(0), // ignored when mode is SHORTEST
+          double_fallback(false),
+          parse_numbers_as_strings(false),
+          recursion_limit(100) {}
 
     // If true, keys in an object can be non-strings.  (In strict
     // JSON, object keys must be strings.)  This is used by dynamic's
@@ -81,6 +90,34 @@ namespace json {
 
     // Check that strings are valid utf8
     bool validate_utf8;
+
+    // Allow trailing comma in lists of values / items
+    bool allow_trailing_comma;
+
+    // Sort keys of all objects before printing out (potentially slow)
+    bool sort_keys;
+
+    // Replace invalid utf8 characters with U+FFFD and continue
+    bool skip_invalid_utf8;
+
+    // true to allow NaN or INF values
+    bool allow_nan_inf;
+
+    // Options for how to print floating point values.  See Conv.h
+    // toAppend implementation for floating point for more info
+    double_conversion::DoubleToStringConverter::DtoaMode double_mode;
+    unsigned int double_num_digits;
+
+    // Fallback to double when a value that looks like integer is too big to
+    // fit in an int64_t. Can result in loss a of precision.
+    bool double_fallback;
+
+    // Do not parse numbers. Instead, store them as strings and leave the
+    // conversion up to the user.
+    bool parse_numbers_as_strings;
+
+    // Recursion limit when parsing.
+    unsigned int recursion_limit;
   };
 
   /*
@@ -88,8 +125,22 @@ namespace json {
    * For the most common use cases there are simpler functions in the
    * main folly namespace below.
    */
-  fbstring serialize(dynamic const&, serialization_opts const&);
+  std::string serialize(dynamic const&, serialization_opts const&);
 
+  /*
+   * Escape a string so that it is legal to print it in JSON text and
+   * append the result to out.
+   */
+
+  void escapeString(
+      StringPiece input,
+      std::string& out,
+      const serialization_opts& opts);
+
+  /*
+   * Strip all C99-like comments (i.e. // and / * ... * /)
+   */
+  std::string stripComments(StringPiece jsonC);
 }
 
 //////////////////////////////////////////////////////////////////////
@@ -98,21 +149,25 @@ namespace json {
  * Parse a json blob out of a range and produce a dynamic representing
  * it.
  */
+dynamic parseJson(StringPiece, json::serialization_opts const&);
 dynamic parseJson(StringPiece);
 
 /*
  * Serialize a dynamic into a json string.
  */
-fbstring toJson(dynamic const&);
+std::string toJson(dynamic const&);
 
 /*
  * Same as the above, except format the json with some minimal
  * indentation.
  */
-fbstring toPrettyJson(dynamic const&);
+std::string toPrettyJson(dynamic const&);
 
+/*
+ * Printer for GTest.
+ * Uppercase name to fill GTest's API, which calls this method through ADL.
+ */
+void PrintTo(const dynamic&, std::ostream*);
 //////////////////////////////////////////////////////////////////////
 
 }
-
-#endif