diff options
Diffstat (limited to 'ext/json/lib/json.rb')
| -rw-r--r-- | ext/json/lib/json.rb | 59 |
1 files changed, 57 insertions, 2 deletions
diff --git a/ext/json/lib/json.rb b/ext/json/lib/json.rb index 0ebff2f948..26d601926f 100644 --- a/ext/json/lib/json.rb +++ b/ext/json/lib/json.rb @@ -6,6 +6,15 @@ require 'json/common' # # \JSON is a lightweight data-interchange format. # +# \JSON is easy for us humans to read and write, +# and equally simple for machines to read (parse) and write (generate). +# +# \JSON is language-independent, making it an ideal interchange format +# for applications in differing programming languages +# and on differing operating systems. +# +# == \JSON Values +# # A \JSON value is one of the following: # - Double-quoted text: <tt>"foo"</tt>. # - Number: +1+, +1.0+, +2.0e2+. @@ -173,6 +182,30 @@ require 'json/common' # When enabled: # JSON.parse('[1,]', allow_trailing_comma: true) # => [1] # +# --- +# +# Option +allow_control_characters+ (boolean) specifies whether to allow +# unescaped ASCII control characters, such as newlines, in strings; +# defaults to +false+. +# +# With the default, +false+: +# JSON.parse(%{"Hello\nWorld"}) # invalid ASCII control character in string (JSON::ParserError) +# +# When enabled: +# JSON.parse(%{"Hello\nWorld"}, allow_control_characters: true) # => "Hello\nWorld" +# +# --- +# +# Option +allow_invalid_escape+ (boolean) specifies whether to ignore backslahes that are followed +# by an invalid escape character in strings; +# defaults to +false+. +# +# With the default, +false+: +# JSON.parse('"Hell\o"') # invalid escape character in string (JSON::ParserError) +# +# When enabled: +# JSON.parse('"Hell\o"', allow_invalid_escape: true) # => "Hello" +# # ====== Output Options # # Option +freeze+ (boolean) specifies whether the returned objects will be frozen; @@ -302,8 +335,27 @@ require 'json/common' # JSON.generate(JSON::MinusInfinity) # # Allow: -# ruby = [Float::NaN, Float::Infinity, Float::MinusInfinity] -# JSON.generate(ruby, allow_nan: true) # => '[NaN,Infinity,-Infinity]' +# ruby = [Float::NAN, Float::INFINITY, JSON::NaN, JSON::Infinity, JSON::MinusInfinity] +# JSON.generate(ruby, allow_nan: true) # => '[NaN,Infinity,NaN,Infinity,-Infinity]' +# +# --- +# +# Option +allow_duplicate_key+ (boolean) specifies whether +# hashes with duplicate keys should be allowed or produce an error. +# defaults to emit a deprecation warning. +# +# With the default, (not set): +# Warning[:deprecated] = true +# JSON.generate({ foo: 1, "foo" => 2 }) +# # warning: detected duplicate key "foo" in {foo: 1, "foo" => 2}. +# # This will raise an error in json 3.0 unless enabled via `allow_duplicate_key: true` +# # => '{"foo":1,"foo":2}' +# +# With <tt>false</tt> +# JSON.generate({ foo: 1, "foo" => 2 }, allow_duplicate_key: false) +# # detected duplicate key "foo" in {foo: 1, "foo" => 2} (JSON::GeneratorError) +# +# In version 3.0, <tt>false</tt> will become the default. # # --- # @@ -384,6 +436,9 @@ require 'json/common' # # == \JSON Additions # +# Note that JSON Additions must only be used with trusted data, and is +# deprecated. +# # When you "round trip" a non-\String object from Ruby to \JSON and back, # you have a new \String, instead of the object you began with: # ruby0 = Range.new(0, 2) |