Class: Heist::RubyParser

Inherits:
Object
  • Object
show all
Defined in:
lib/parser/ruby.rb

Overview

RubyParser parses non-string code given as Ruby data such as arrays. It allows Lisp-style code to be expressed inline with Ruby, for example:

scheme = Heist::Runtime.new
scheme.exec [:define, [:square, :x], [:*, :x, :x]]
scheme.exec [:square, 9]
#=> 81

The above API uses RubyParser behind the scenes to turn Ruby data into Heist runtime objects such as Cons based lists before execution.

Instance Method Summary collapse

Instance Method Details

#parse(source) ⇒ Object

Parses a single piece of Ruby data in



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# File 'lib/parser/ruby.rb', line 16

def parse(source)
  case source
    when Array then
      Runtime::Cons.construct(source) { |cell| parse(cell) }
    when Symbol then
      Runtime::Identifier.new(source)
    else
      source
  end
end