diff options
Diffstat (limited to 'ext/json/lib/json/common.rb')
| -rw-r--r-- | ext/json/lib/json/common.rb | 123 |
1 files changed, 83 insertions, 40 deletions
diff --git a/ext/json/lib/json/common.rb b/ext/json/lib/json/common.rb index b816a66cf1..244634b7a1 100644 --- a/ext/json/lib/json/common.rb +++ b/ext/json/lib/json/common.rb @@ -1,4 +1,5 @@ require 'json/version' +require 'iconv' module JSON class << self @@ -32,12 +33,16 @@ module JSON # 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 = path.to_s - path.split(/::/).inject(Object) do |p, c| + path.to_s.split(/::/).inject(Object) do |p, c| case when c.empty? then p when p.const_defined?(c) then p.const_get(c) - else raise ArgumentError, "can't find const #{path}" + else + begin + p.const_missing(c) + rescue NameError + raise ArgumentError, "can't find const #{path}" + end end end end @@ -58,6 +63,20 @@ module JSON end self.state = generator::State const_set :State, self.state + const_set :SAFE_STATE_PROTOTYPE, State.new.freeze + const_set :FAST_STATE_PROTOTYPE, State.new( + :indent => '', + :space => '', + :object_nl => "", + :array_nl => "", + :max_nesting => false + ).freeze + const_set :PRETTY_STATE_PROTOTYPE, State.new( + :indent => ' ', + :space => ' ', + :object_nl => "\n", + :array_nl => "\n" + ).freeze end # Returns the JSON generator modul, that is used by JSON. This might be @@ -90,22 +109,22 @@ module JSON # 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 - # If a circular data structure is encountered while unparsing - # this exception is raised. - class CircularDatastructure < GeneratorError; end - # 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 string _source_ into a Ruby data structure and return it. + # Parse the JSON document _source_ into a Ruby data structure and return it. # # _opts_ can have the following # keys: @@ -115,16 +134,21 @@ module JSON # * *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, which is also + # the default. # * *create_additions*: If set to false, the Parser doesn't create # additions even if a matchin 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 = {}) - JSON.parser.new(source, opts).parse + Parser.new(source, opts).parse end - # Parse the JSON string _source_ into a Ruby data structure and return it. + # 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_ strings. + # 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 @@ -139,15 +163,14 @@ module JSON # defaults to true. def parse!(source, opts = {}) opts = { - :max_nesting => false, - :allow_nan => true + :max_nesting => false, + :allow_nan => true }.update(opts) - JSON.parser.new(source, opts).parse + Parser.new(source, opts).parse end - # Unparse the Ruby data structure _obj_ into a single line JSON string and - # return it. _state_ is - # * a JSON::State object, + # 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. @@ -160,10 +183,8 @@ module JSON # * *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: ''), + # * *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: ''), - # * *check_circular*: true if checking for circular data structures - # should be done (the default), false otherwise. # * *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. @@ -174,13 +195,21 @@ module JSON # 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 a pretty output. - def generate(obj, state = nil) - if state - state = State.from_state(state) + def generate(obj, opts = nil) + 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 = SAFE_STATE_PROTOTYPE.dup + state = state.configure(opts) else - state = State.new + state = SAFE_STATE_PROTOTYPE end - obj.to_json(state) + state.generate(obj) end # :stopdoc: @@ -190,14 +219,26 @@ module JSON module_function :unparse # :startdoc: - # Unparse the Ruby data structure _obj_ into a single line JSON string and - # return it. This method disables the checks for circles in Ruby objects, and - # also generates NaN, Infinity, and, -Infinity float values. + # 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) - obj.to_json(nil) + def fast_generate(obj, opts = nil) + 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 = FAST_STATE_PROTOTYPE.dup + state.configure(opts) + else + state = FAST_STATE_PROTOTYPE + end + state.generate(obj) end # :stopdoc: @@ -206,19 +247,13 @@ module JSON module_function :fast_unparse # :startdoc: - # Unparse the Ruby data structure _obj_ into a JSON string and return it. The - # returned string is a prettier form of the string returned by #unparse. + # 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) - state = JSON.state.new( - :indent => ' ', - :space => ' ', - :object_nl => "\n", - :array_nl => "\n", - :check_circular => true - ) if opts if opts.respond_to? :to_hash opts = opts.to_hash @@ -227,9 +262,12 @@ module JSON else raise TypeError, "can't convert #{opts.class} into Hash" end + state = PRETTY_STATE_PROTOTYPE.dup state.configure(opts) + else + state = PRETTY_STATE_PROTOTYPE end - obj.to_json(state) + state.generate(obj) end # :stopdoc: @@ -305,6 +343,11 @@ module JSON rescue JSON::NestingError raise ArgumentError, "exceed depth limit" end + + # Shortuct for iconv. + def self.iconv(to, from, string) + Iconv.iconv(to, from, string).first + end end module ::Kernel |