diff options
Diffstat (limited to 'ruby_2_2/ext/json/lib/json/common.rb')
| -rw-r--r-- | ruby_2_2/ext/json/lib/json/common.rb | 484 |
1 files changed, 0 insertions, 484 deletions
diff --git a/ruby_2_2/ext/json/lib/json/common.rb b/ruby_2_2/ext/json/lib/json/common.rb deleted file mode 100644 index 8fbaa2baad..0000000000 --- a/ruby_2_2/ext/json/lib/json/common.rb +++ /dev/null @@ -1,484 +0,0 @@ -require 'json/version' -require 'json/generic_object' - -module JSON - class << self - # If _object_ is string-like, parse the string and return the parsed result - # as a Ruby data structure. Otherwise generate a JSON text from the Ruby - # data structure object and return it. - # - # The _opts_ argument is passed through to generate/parse respectively. See - # generate and parse for their documentation. - def [](object, opts = {}) - if object.respond_to? :to_str - JSON.parse(object.to_str, opts) - else - JSON.generate(object, opts) - end - end - - # Returns the JSON parser class that is used by JSON. This is either - # JSON::Ext::Parser or JSON::Pure::Parser. - attr_reader :parser - - # Set the JSON parser class _parser_ to be used by JSON. - def parser=(parser) # :nodoc: - @parser = parser - remove_const :Parser if JSON.const_defined_in?(self, :Parser) - const_set :Parser, parser - end - - # Return the constant located at _path_. The format of _path_ has to be - # either ::A::B::C or A::B::C. In any case, A has to be located at the top - # level (absolute namespace path?). If there doesn't exist a constant at - # the given path, an ArgumentError is raised. - def deep_const_get(path) # :nodoc: - path.to_s.split(/::/).inject(Object) do |p, c| - case - when c.empty? then p - when JSON.const_defined_in?(p, c) then p.const_get(c) - else - begin - p.const_missing(c) - rescue NameError => e - raise ArgumentError, "can't get const #{path}: #{e}" - end - end - end - end - - # Set the module _generator_ to be used by JSON. - def generator=(generator) # :nodoc: - old, $VERBOSE = $VERBOSE, nil - @generator = generator - generator_methods = generator::GeneratorMethods - for const in generator_methods.constants - klass = deep_const_get(const) - modul = generator_methods.const_get(const) - klass.class_eval do - instance_methods(false).each do |m| - m.to_s == 'to_json' and remove_method m - end - include modul - end - end - self.state = generator::State - const_set :State, self.state - const_set :SAFE_STATE_PROTOTYPE, State.new - const_set :FAST_STATE_PROTOTYPE, State.new( - :indent => '', - :space => '', - :object_nl => "", - :array_nl => "", - :max_nesting => false - ) - const_set :PRETTY_STATE_PROTOTYPE, State.new( - :indent => ' ', - :space => ' ', - :object_nl => "\n", - :array_nl => "\n" - ) - ensure - $VERBOSE = old - end - - # Returns the JSON generator module that is used by JSON. This is - # either JSON::Ext::Generator or JSON::Pure::Generator. - attr_reader :generator - - # Returns the JSON generator state class that is used by JSON. This is - # either JSON::Ext::Generator::State or JSON::Pure::Generator::State. - attr_accessor :state - - # This is create identifier, which is used to decide if the _json_create_ - # hook of a class should be called. It defaults to 'json_class'. - attr_accessor :create_id - end - self.create_id = 'json_class' - - NaN = 0.0/0 - - Infinity = 1.0/0 - - MinusInfinity = -Infinity - - # The base exception for JSON errors. - class JSONError < StandardError - def self.wrap(exception) - obj = new("Wrapped(#{exception.class}): #{exception.message.inspect}") - obj.set_backtrace exception.backtrace - obj - end - end - - # This exception is raised if a parser error occurs. - class ParserError < JSONError; end - - # This exception is raised if the nesting of parsed data structures is too - # deep. - class NestingError < ParserError; end - - # :stopdoc: - class CircularDatastructure < NestingError; end - # :startdoc: - - # This exception is raised if a generator or unparser error occurs. - class GeneratorError < JSONError; end - # For backwards compatibility - UnparserError = GeneratorError - - # This exception is raised if the required unicode support is missing on the - # system. Usually this means that the iconv library is not installed. - class MissingUnicodeSupport < JSONError; end - - module_function - - # Parse the JSON document _source_ into a Ruby data structure and return it. - # - # _opts_ can have the following - # keys: - # * *max_nesting*: The maximum depth of nesting allowed in the parsed data - # structures. Disable depth checking with :max_nesting => false. It defaults - # to 100. - # * *allow_nan*: If set to true, allow NaN, Infinity and -Infinity in - # defiance of RFC 4627 to be parsed by the Parser. This option defaults - # to false. - # * *symbolize_names*: If set to true, returns symbols for the names - # (keys) in a JSON object. Otherwise strings are returned. Strings are - # the default. - # * *create_additions*: If set to false, the Parser doesn't create - # additions even if a matching class and create_id was found. This option - # defaults to true. - # * *object_class*: Defaults to Hash - # * *array_class*: Defaults to Array - def parse(source, opts = {}) - Parser.new(source, opts).parse - end - - # Parse the JSON document _source_ into a Ruby data structure and return it. - # The bang version of the parse method defaults to the more dangerous values - # for the _opts_ hash, so be sure only to parse trusted _source_ documents. - # - # _opts_ can have the following keys: - # * *max_nesting*: The maximum depth of nesting allowed in the parsed data - # structures. Enable depth checking with :max_nesting => anInteger. The parse! - # methods defaults to not doing max depth checking: This can be dangerous - # if someone wants to fill up your stack. - # * *allow_nan*: If set to true, allow NaN, Infinity, and -Infinity in - # defiance of RFC 4627 to be parsed by the Parser. This option defaults - # to true. - # * *create_additions*: If set to false, the Parser doesn't create - # additions even if a matching class and create_id was found. This option - # defaults to true. - def parse!(source, opts = {}) - opts = { - :max_nesting => false, - :allow_nan => true - }.update(opts) - Parser.new(source, opts).parse - end - - # Generate a JSON document from the Ruby data structure _obj_ and return - # it. _state_ is * a JSON::State object, - # * or a Hash like object (responding to to_hash), - # * an object convertible into a hash by a to_h method, - # that is used as or to configure a State object. - # - # It defaults to a state object, that creates the shortest possible JSON text - # in one line, checks for circular data structures and doesn't allow NaN, - # Infinity, and -Infinity. - # - # A _state_ hash can have the following keys: - # * *indent*: a string used to indent levels (default: ''), - # * *space*: a string that is put after, a : or , delimiter (default: ''), - # * *space_before*: a string that is put before a : pair delimiter (default: ''), - # * *object_nl*: a string that is put at the end of a JSON object (default: ''), - # * *array_nl*: a string that is put at the end of a JSON array (default: ''), - # * *allow_nan*: true if NaN, Infinity, and -Infinity should be - # generated, otherwise an exception is thrown if these values are - # encountered. This options defaults to false. - # * *max_nesting*: The maximum depth of nesting allowed in the data - # structures from which JSON is to be generated. Disable depth checking - # with :max_nesting => false, it defaults to 100. - # - # See also the fast_generate for the fastest creation method with the least - # amount of sanity checks, and the pretty_generate method for some - # defaults for pretty output. - def generate(obj, opts = nil) - if State === opts - state, opts = opts, nil - else - state = SAFE_STATE_PROTOTYPE.dup - end - if opts - if opts.respond_to? :to_hash - opts = opts.to_hash - elsif opts.respond_to? :to_h - opts = opts.to_h - else - raise TypeError, "can't convert #{opts.class} into Hash" - end - state = state.configure(opts) - end - state.generate(obj) - end - - # :stopdoc: - # I want to deprecate these later, so I'll first be silent about them, and - # later delete them. - alias unparse generate - module_function :unparse - # :startdoc: - - # Generate a JSON document from the Ruby data structure _obj_ and return it. - # This method disables the checks for circles in Ruby objects. - # - # *WARNING*: Be careful not to pass any Ruby data structures with circles as - # _obj_ argument because this will cause JSON to go into an infinite loop. - def fast_generate(obj, opts = nil) - if State === opts - state, opts = opts, nil - else - state = FAST_STATE_PROTOTYPE.dup - end - if opts - if opts.respond_to? :to_hash - opts = opts.to_hash - elsif opts.respond_to? :to_h - opts = opts.to_h - else - raise TypeError, "can't convert #{opts.class} into Hash" - end - state.configure(opts) - end - state.generate(obj) - end - - # :stopdoc: - # I want to deprecate these later, so I'll first be silent about them, and later delete them. - alias fast_unparse fast_generate - module_function :fast_unparse - # :startdoc: - - # Generate a JSON document from the Ruby data structure _obj_ and return it. - # The returned document is a prettier form of the document returned by - # #unparse. - # - # The _opts_ argument can be used to configure the generator. See the - # generate method for a more detailed explanation. - def pretty_generate(obj, opts = nil) - if State === opts - state, opts = opts, nil - else - state = PRETTY_STATE_PROTOTYPE.dup - end - if opts - if opts.respond_to? :to_hash - opts = opts.to_hash - elsif opts.respond_to? :to_h - opts = opts.to_h - else - raise TypeError, "can't convert #{opts.class} into Hash" - end - state.configure(opts) - end - state.generate(obj) - end - - # :stopdoc: - # I want to deprecate these later, so I'll first be silent about them, and later delete them. - alias pretty_unparse pretty_generate - module_function :pretty_unparse - # :startdoc: - - class << self - # The global default options for the JSON.load method: - # :max_nesting: false - # :allow_nan: true - # :quirks_mode: true - attr_accessor :load_default_options - end - self.load_default_options = { - :max_nesting => false, - :allow_nan => true, - :quirks_mode => true, - :create_additions => true, - } - - # Load a ruby data structure from a JSON _source_ and return it. A source can - # either be a string-like object, an IO-like object, or an object responding - # to the read method. If _proc_ was given, it will be called with any nested - # Ruby object as an argument recursively in depth first order. To modify the - # default options pass in the optional _options_ argument as well. - # - # BEWARE: This method is meant to serialise data from trusted user input, - # like from your own database server or clients under your control, it could - # be dangerous to allow untrusted users to pass JSON sources into it. The - # default options for the parser can be changed via the load_default_options - # method. - # - # This method is part of the implementation of the load/dump interface of - # Marshal and YAML. - def load(source, proc = nil, options = {}) - opts = load_default_options.merge options - if source.respond_to? :to_str - source = source.to_str - elsif source.respond_to? :to_io - source = source.to_io.read - elsif source.respond_to?(:read) - source = source.read - end - if opts[:quirks_mode] && (source.nil? || source.empty?) - source = 'null' - end - result = parse(source, opts) - recurse_proc(result, &proc) if proc - result - end - - # Recursively calls passed _Proc_ if the parsed data structure is an _Array_ or _Hash_ - def recurse_proc(result, &proc) - case result - when Array - result.each { |x| recurse_proc x, &proc } - proc.call result - when Hash - result.each { |x, y| recurse_proc x, &proc; recurse_proc y, &proc } - proc.call result - else - proc.call result - end - end - - alias restore load - module_function :restore - - class << self - # The global default options for the JSON.dump method: - # :max_nesting: false - # :allow_nan: true - # :quirks_mode: true - attr_accessor :dump_default_options - end - self.dump_default_options = { - :max_nesting => false, - :allow_nan => true, - :quirks_mode => true, - } - - # Dumps _obj_ as a JSON string, i.e. calls generate on the object and returns - # the result. - # - # If anIO (an IO-like object or an object that responds to the write method) - # was given, the resulting JSON is written to it. - # - # If the number of nested arrays or objects exceeds _limit_, an ArgumentError - # exception is raised. This argument is similar (but not exactly the - # same!) to the _limit_ argument in Marshal.dump. - # - # The default options for the generator can be changed via the - # dump_default_options method. - # - # This method is part of the implementation of the load/dump interface of - # Marshal and YAML. - def dump(obj, anIO = nil, limit = nil) - if anIO and limit.nil? - anIO = anIO.to_io if anIO.respond_to?(:to_io) - unless anIO.respond_to?(:write) - limit = anIO - anIO = nil - end - end - opts = JSON.dump_default_options - limit and opts.update(:max_nesting => limit) - result = generate(obj, opts) - if anIO - anIO.write result - anIO - else - result - end - rescue JSON::NestingError - raise ArgumentError, "exceed depth limit" - end - - # Swap consecutive bytes of _string_ in place. - def self.swap!(string) # :nodoc: - 0.upto(string.size / 2) do |i| - break unless string[2 * i + 1] - string[2 * i], string[2 * i + 1] = string[2 * i + 1], string[2 * i] - end - string - end - - # Shortuct for iconv. - if ::String.method_defined?(:encode) - # Encodes string using Ruby's _String.encode_ - def self.iconv(to, from, string) - string.encode(to, from) - end - else - require 'iconv' - # Encodes string using _iconv_ library - def self.iconv(to, from, string) - Iconv.conv(to, from, string) - end - end - - if ::Object.method(:const_defined?).arity == 1 - def self.const_defined_in?(modul, constant) - modul.const_defined?(constant) - end - else - def self.const_defined_in?(modul, constant) - modul.const_defined?(constant, false) - end - end -end - -module ::Kernel - private - - # Outputs _objs_ to STDOUT as JSON strings in the shortest form, that is in - # one line. - def j(*objs) - objs.each do |obj| - puts JSON::generate(obj, :allow_nan => true, :max_nesting => false) - end - nil - end - - # Outputs _objs_ to STDOUT as JSON strings in a pretty format, with - # indentation and over many lines. - def jj(*objs) - objs.each do |obj| - puts JSON::pretty_generate(obj, :allow_nan => true, :max_nesting => false) - end - nil - end - - # If _object_ is string-like, parse the string and return the parsed result as - # a Ruby data structure. Otherwise, generate a JSON text from the Ruby data - # structure object and return it. - # - # The _opts_ argument is passed through to generate/parse respectively. See - # generate and parse for their documentation. - def JSON(object, *args) - if object.respond_to? :to_str - JSON.parse(object.to_str, args.first) - else - JSON.generate(object, args.first) - end - end -end - -# Extends any Class to include _json_creatable?_ method. -class ::Class - # Returns true if this class can be used to create an instance - # from a serialised JSON string. The class has to implement a class - # method _json_create_ that expects a hash as first parameter. The hash - # should include the required data. - def json_creatable? - respond_to?(:json_create) - end -end |