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Contents
module Safemode
class Scope < Blankslate
def initialize(delegate = nil, delegate_methods = [])
@delegate = delegate
@delegate_methods = delegate_methods
@locals = {}
end
def bind(instance_vars = {}, locals = {}, &block)
@locals = symbolize_keys(locals) # why can't I just pull them to local scope in the same way like instance_vars?
instance_vars = symbolize_keys(instance_vars)
instance_vars.each {|key, obj| eval "@#{key} = instance_vars[:#{key}]" }
@_safemode_output = ''
binding
end
def to_jail
self
end
def puts(*args)
print args.to_s + "\n"
end
def print(*args)
@_safemode_output += args.to_s
end
def output
@_safemode_output
end
def method_missing(method, *args, &block)
if @locals.has_key?(method)
@locals[method]
elsif @delegate_methods.include?(method)
@delegate.send method, *unjail_args(args), &block
else
raise Safemode::SecurityError.new(method, "#<Safemode::ScopeObject>")
end
end
private
def symbolize_keys(hash)
hash.inject({}) do |hash, (key, value)|
hash[key.to_s.intern] = value
hash
end
end
def unjail_args(args)
args.collect do |arg|
arg.class.name =~ /::Jail$/ ? arg.instance_variable_get(:@source) : arg
end
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems