JezK
Edit File: ruby_rhino_runtime.rb
require "execjs/runtime" module ExecJS class RubyRhinoRuntime < Runtime class Context < Runtime::Context def initialize(runtime, source = "", options = {}) source = encode(source) @rhino_context = ::Rhino::Context.new fix_memory_limit! @rhino_context @rhino_context.eval(source) rescue Exception => e raise wrap_error(e) end def exec(source, options = {}) source = encode(source) if /\S/ =~ source eval "(function(){#{source}})()", options end end def eval(source, options = {}) source = encode(source) if /\S/ =~ source unbox @rhino_context.eval("(#{source})") end rescue Exception => e raise wrap_error(e) end def call(properties, *args) unbox @rhino_context.eval(properties).call(*args) rescue Exception => e raise wrap_error(e) end def unbox(value) case value = ::Rhino::to_ruby(value) when Java::OrgMozillaJavascript::NativeFunction nil when Java::OrgMozillaJavascript::NativeObject value.inject({}) do |vs, (k, v)| case v when Java::OrgMozillaJavascript::NativeFunction, ::Rhino::JS::Function nil else vs[k] = unbox(v) end vs end when Array value.map { |v| unbox(v) } else value end end def wrap_error(e) return e unless e.is_a?(::Rhino::JSError) error_class = e.message == "syntax error" ? RuntimeError : ProgramError stack = e.backtrace stack = stack.map { |line| line.sub(" at ", "").sub("<eval>", "(execjs)").strip } stack.unshift("(execjs):1") if e.javascript_backtrace.empty? error = error_class.new(e.value.to_s) error.set_backtrace(stack) error end private # Disables bytecode compiling which limits you to 64K scripts def fix_memory_limit!(context) if context.respond_to?(:optimization_level=) context.optimization_level = -1 else context.instance_eval { @native.setOptimizationLevel(-1) } end end end def name "therubyrhino (Rhino)" end def available? require "rhino" true rescue LoadError false end end end