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forked from rails/execjs
/
ruby_rhino_runtime.rb
83 lines (71 loc) · 1.82 KB
/
ruby_rhino_runtime.rb
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module ExecJS
class RubyRhinoRuntime
class Context
def initialize(source = "")
source = source.encode('UTF-8') if source.respond_to?(:encode)
@rhino_context = ::Rhino::Context.new
@rhino_context.eval(source)
end
def exec(source, options = {})
source = source.encode('UTF-8') if source.respond_to?(:encode)
if /\S/ =~ source
eval "(function(){#{source}})()", options
end
end
def eval(source, options = {})
source = source.encode('UTF-8') if source.respond_to?(:encode)
if /\S/ =~ source
unbox @rhino_context.eval("(#{source})")
end
rescue ::Rhino::JavascriptError => e
if e.message == "syntax error"
raise RuntimeError, e.message
else
raise ProgramError, e.message
end
end
def call(properties, *args)
unbox @rhino_context.eval(properties).call(*args)
rescue ::Rhino::JavascriptError => e
if e.message == "syntax error"
raise RuntimeError, e.message
else
raise ProgramError, e.message
end
end
def unbox(value)
case value
when ::Rhino::NativeFunction
nil
when ::Rhino::NativeObject
value.inject({}) do |vs, (k, v)|
vs[k] = unbox(v) unless v.is_a?(::Rhino::NativeFunction)
vs
end
else
value
end
end
end
def name
"therubyrhino (Rhino)"
end
def exec(source)
context = Context.new
context.exec(source)
end
def eval(source)
context = Context.new
context.eval(source)
end
def compile(source)
Context.new(source)
end
def available?
require "rhino"
true
rescue LoadError
false
end
end
end