Module: Rack::Utils::OkJson

Extended by:
OkJson
Included in:
OkJson
Defined in:
lib/rack/utils/okjson.rb

Overview

Some parts adapted from golang.org/src/encoding/json/decode.go and golang.org/src/unicode/utf8/utf8.go

Defined Under Namespace

Classes: Error, Utf8Error

Constant Summary collapse

Upstream = 
'43'

Instance Method Summary collapse

Instance Method Details

#decode(s) ⇒ Object

Decodes a json document in string s and returns the corresponding ruby value. String s must be valid UTF-8. If you have a string in some other encoding, convert it first.

String values in the resulting structure will be UTF-8.



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# File 'lib/rack/utils/okjson.rb', line 43

def decode(s)
  ts = lex(s)
  v, ts = textparse(ts)
  if ts.length > 0
    raise Error, 'trailing garbage'
  end
  v
end

#encode(x) ⇒ Object

Encodes x into a json text. It may contain only Array, Hash, String, Numeric, true, false, nil. (Note, this list excludes Symbol.) X itself must be an Array or a Hash. No other value can be encoded, and an error will be raised if x contains any other value, such as Nan, Infinity, Symbol, and Proc, or if a Hash key is not a String. Strings contained in x must be valid UTF-8.



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# File 'lib/rack/utils/okjson.rb', line 62

def encode(x)
  case x
  when Hash    then objenc(x)
  when Array   then arrenc(x)
  else
    raise Error, 'root value must be an Array or a Hash'
  end
end

#valenc(x) ⇒ Object 



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# File 'lib/rack/utils/okjson.rb', line 72

def valenc(x)
  case x
  when Hash    then objenc(x)
  when Array   then arrenc(x)
  when String  then strenc(x)
  when Numeric then numenc(x)
  when true    then "true"
  when false   then "false"
  when nil     then "null"
  else
    raise Error, "cannot encode #{x.class}: #{x.inspect}"
  end
end