Some parts adapted from golang.org/src/pkg/json/decode.go and golang.org/src/pkg/utf8/utf8.go
Get the current adapter class.
# File lib/multi_json.rb, line 77 def adapter return @adapter if defined?(@adapter) && @adapter self.use nil # load default adapter @adapter end
# File lib/multi_json.rb, line 139 def current_adapter(options={}) if new_adapter = options[:adapter] load_adapter(new_adapter) else adapter end end
The default adapter based on what you currently have loaded and installed. First checks to see if any adapters are already loaded, then checks to see which are installed if none are loaded.
# File lib/multi_json.rb, line 55 def default_adapter return :oj if defined?(::Oj) return :yajl if defined?(::Yajl) return :json_gem if defined?(::JSON) return :gson if defined?(::Gson) return :jr_jackson if defined?(::JrJackson) REQUIREMENT_MAP.each do |library, adapter| begin require library return adapter rescue ::LoadError next end end Kernel.warn '[WARNING] MultiJson is using the default adapter (ok_json). We recommend loading a different JSON library to improve performance.' :ok_json end
# File lib/multi_json.rb, line 23 def default_options=(value) Kernel.warn "MultiJson.default_options setter is deprecated\n" + "Use MultiJson.load_options and MultiJson.dump_options instead" self.load_options = self.dump_options = value end
Encodes a Ruby object as JSON.
# File lib/multi_json.rb, line 148 def dump(object, options={}) current_adapter(options).dump(object, options) end
Decode a JSON string into Ruby.
:symbolize_keys |
If true, will use symbols instead of strings for the keys. |
:adapter |
If set, the selected adapter will be used for this call. |
# File lib/multi_json.rb, line 129 def load(string, options={}) adapter = current_adapter(options) begin adapter.load(string, options) rescue adapter::ParseError => exception raise LoadError.new(exception.message, exception.backtrace, string) end end
# File lib/multi_json.rb, line 105 def load_adapter(new_adapter) case new_adapter when String, Symbol new_adapter = ALIASES.fetch(new_adapter.to_s, new_adapter) require "multi_json/adapters/#{new_adapter}" klass_name = new_adapter.to_s.split('_').map(&:capitalize) * '' MultiJson::Adapters.const_get(klass_name) when NilClass, FalseClass load_adapter default_adapter when Class, Module new_adapter else raise NameError end rescue NameError, ::LoadError raise ArgumentError, 'Did not recognize your adapter specification.' end
Set the JSON parser utilizing a symbol, string, or class. Supported by default are:
:oj
:json_gem
:json_pure
:ok_json
:yajl
:nsjsonserialization (MacRuby only)
:gson (JRuby only)
:jr_jackson (JRuby only)
# File lib/multi_json.rb, line 97 def use(new_adapter) adapter = load_adapter(new_adapter) adapter.activate! if adapter.respond_to?(:activate!) @adapter = adapter end
Executes passed block using specified adapter.
# File lib/multi_json.rb, line 154 def with_adapter(new_adapter) old_adapter, self.adapter = adapter, new_adapter yield ensure self.adapter = old_adapter end
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