Sha256: d2ec187a8c315cbbd6974b7fc536fb4e5c53cba47ae871ea1ed1b1508fd837d4
Contents?: true
Size: 1.46 KB
Versions: 16
Compression:
Stored size: 1.46 KB
Contents
#!/usr/bin/env ruby
require 'opal'
module Opal
class V8Context
def initialize
@builder = Opal::Builder.new
end
def run(filename = nil)
return if @v8
begin
require 'v8'
rescue LoadError
abort 'therubyracer must be installed'
end
@v8 = V8::Context.new
@v8['console'] = self
@v8.eval Opal::Builder.new.build('opal').to_s
if filename
if File.exist? filename
eval_ruby File.read(filename)
else
fail "file does not exist: #{filename}"
end
end
run_repl
end
def log(*str)
puts(*str)
end
def run_repl
require 'readline'
loop do
# on SIGINT lets just return from the loop..
trap("SIGINT") { finish; return }
line = Readline.readline '>> ', true
# if we type exit, then we need to close down context
if line == "exit" or line.nil?
break
end
puts "=> #{eval_ruby line}"
end
finish
end
def eval_ruby(str)
code = Opal::Builder.new.build_str(str, '(irb)', :irb => true, :const_missing => true)
code.processed[0...-1].each{ |c| @v8.eval(c.to_s) }
@v8.eval "var $_result = #{code.processed.last.to_s} ($_result == null ? 'nil' : $_result.$inspect());"
rescue => e
puts "#{e.message}\n\t#{e.backtrace.join("\n\t")}"
end
def finish
@v8 = nil
end
end
end
Opal::V8Context.new.run ARGV.first
Version data entries
16 entries across 16 versions & 2 rubygems