Class | JSON::Pure::Generator::State |
In: |
lib/json/pure/generator.rb
|
Parent: | Object |
array_nl | [RW] | This string is put at the end of a line that holds a JSON array. |
indent | [RW] | This string is used to indent levels in the JSON text. |
max_nesting | [RW] | This integer returns the maximum level of data structure nesting in the generated JSON, max_nesting = 0 if no maximum is checked. |
object_nl | [RW] | This string is put at the end of a line that holds a JSON object (or Hash). |
space | [RW] | This string is used to insert a space between the tokens in a JSON string. |
space_before | [RW] | This string is used to insert a space before the ’:’ in JSON objects. |
Creates a State object from opts, which ought to be Hash to create a new State instance configured by opts, something else to create an unconfigured instance. If opts is a State object, it is just returned.
# File lib/json/pure/generator.rb, line 95 95: def self.from_state(opts) 96: case opts 97: when self 98: opts 99: when Hash 100: new(opts) 101: else 102: new 103: end 104: end
Instantiates a new State object, configured by opts.
opts can have the following keys:
# File lib/json/pure/generator.rb, line 122 122: def initialize(opts = {}) 123: @seen = {} 124: @indent = '' 125: @space = '' 126: @space_before = '' 127: @object_nl = '' 128: @array_nl = '' 129: @check_circular = true 130: @allow_nan = false 131: configure opts 132: end
Returns true, if circular data structures should be checked, otherwise returns false.
# File lib/json/pure/generator.rb, line 164 164: def check_circular? 165: @check_circular 166: end
Configure this State instance with the Hash opts, and return itself.
# File lib/json/pure/generator.rb, line 193 193: def configure(opts) 194: @indent = opts[:indent] if opts.key?(:indent) 195: @space = opts[:space] if opts.key?(:space) 196: @space_before = opts[:space_before] if opts.key?(:space_before) 197: @object_nl = opts[:object_nl] if opts.key?(:object_nl) 198: @array_nl = opts[:array_nl] if opts.key?(:array_nl) 199: @check_circular = !!opts[:check_circular] if opts.key?(:check_circular) 200: @allow_nan = !!opts[:allow_nan] if opts.key?(:allow_nan) 201: if !opts.key?(:max_nesting) # defaults to 19 202: @max_nesting = 19 203: elsif opts[:max_nesting] 204: @max_nesting = opts[:max_nesting] 205: else 206: @max_nesting = 0 207: end 208: self 209: end
Forget object for this generating run.
# File lib/json/pure/generator.rb, line 187 187: def forget(object) 188: @seen.delete object.__id__ 189: end
Remember object, to find out if it was already encountered (if a cyclic data structure is if a cyclic data structure is rendered).
# File lib/json/pure/generator.rb, line 182 182: def remember(object) 183: @seen[object.__id__] = true 184: end
Returns true, if object was already seen during this generating run.
# File lib/json/pure/generator.rb, line 176 176: def seen?(object) 177: @seen.key?(object.__id__) 178: end
Returns the configuration instance variables as a hash, that can be passed to the configure method.
# File lib/json/pure/generator.rb, line 213 213: def to_h 214: result = {} 215: for iv in %w[indent space space_before object_nl array_nl check_circular allow_nan max_nesting] 216: result[iv.intern] = instance_variable_get("@#{iv}") 217: end 218: result 219: end