Class: Hash

Inherits:
Object show all
Defined in:
lib/json/objects.rb

Direct Known Subclasses

Amazon::Coral::QueryStringMap

Instance Method Summary collapse

Instance Method Details

#from_json(lexer) ⇒ Object

This method will parse a JSON object from the passed lexer object. It takes a lexer object which is about to read a JSON object. It raises a runtime error otherwise. It returns the original JSON object. This method probably shouldn’t be used directly.

Parameters


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# File 'lib/json/objects.rb', line 168

def from_json(lexer)
  lexer.unescape if (lexer.nextclean == '%')
  lexer.back
  raise "A JSON Object must begin with '{'" if (lexer.nextclean != "{")
  loop {
	c = lexer.nextclean
	key = nil
	case c
	when '\0'
	  raise "A JSON Object must end with '}'"
	when '}'
	  return (self);
	else
	  lexer.back
	  key = lexer.nextvalue().to_s()
	end
	raise "Expected a ':' after a key" if (lexer.nextclean() != ':')
	self[key] = lexer.nextvalue()
	case lexer.nextclean()
	when ','
	  return(self) if (lexer.nextclean() == '}')
	  lexer.back
	when '}'
	  return(self)
	else
	  raise "Expected a ',' or '}'"
	end
  }
  return(self)
end

#to_json ⇒ Object

This method will serialize the hash into regular JSON format.



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# File 'lib/json/objects.rb', line 147

def to_json
  retval = "{"

  first = true
  self.each {|key, val|
 	retval << "," unless first
	key = key.to_s #keys in json hashes need to be strings, nothing else.
 	retval << key.to_json + ":"
 	retval << val.to_json
	first = false
  }
  retval << "}"
  return(retval)
end