Module: Fusion::Serializer

Defined in:
lib/fusion.rb

Overview

JSON I/O (minimal, with NULL and ErrorVal handling)

Class Method Summary collapse

Class Method Details

.string_json(s) ⇒ Object 



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# File 'lib/fusion.rb', line 1104

def self.string_json(s)
  out = +'"'
  s.each_char do |c|
    out << case c
           when '"' then '\\"'
           when "\\" then "\\\\"
           when "\n" then "\\n"
           when "\t" then "\\t"
           when "\r" then "\\r"
           else c
           end
  end
  out << '"'
  out
end

.to_json(v) ⇒ Object 



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# File 'lib/fusion.rb', line 1084

def self.to_json(v)
  case v
  when NULL then "null"
  when true then "true"
  when false then "false"
  when Integer then v.to_s
  when Float then v.to_s
  when String then string_json(v)
  when Array then "[" + v.map { |x| to_json(x) }.join(",") + "]"
  when Hash then "{" + v.map { |k, x| "#{string_json(k.to_s)}:#{to_json(x)}" }.join(",") + "}"
  when Func, NativeFunc then '"<function>"'
  when ErrorVal
    # Errors render as `!<payload-json>`. This form is NOT valid JSON; the CLI
    # prints the payload (as JSON) to stderr and nothing to stdout on error.
    "!" + to_json(v.payload)
  else
    v.inspect
  end
end