/usr/lib/ruby/vendor_ruby/erubis/evaluator.rb is in ruby-erubis 2.7.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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## $Release: 2.7.0 $
## copyright(c) 2006-2011 kuwata-lab.com all rights reserved.
##
require 'erubis/error'
require 'erubis/context'
module Erubis
EMPTY_BINDING = binding()
##
## evaluate code
##
module Evaluator
def self.supported_properties # :nodoc:
return []
end
attr_accessor :src, :filename
def init_evaluator(properties)
@filename = properties[:filename]
end
def result(*args)
raise NotSupportedError.new("evaluation of code except Ruby is not supported.")
end
def evaluate(*args)
raise NotSupportedError.new("evaluation of code except Ruby is not supported.")
end
end
##
## evaluator for Ruby
##
module RubyEvaluator
include Evaluator
def self.supported_properties # :nodoc:
list = Evaluator.supported_properties
return list
end
## eval(@src) with binding object
def result(_binding_or_hash=TOPLEVEL_BINDING)
_arg = _binding_or_hash
if _arg.is_a?(Hash)
_b = binding()
eval _arg.collect{|k,v| "#{k} = _arg[#{k.inspect}]; "}.join, _b
elsif _arg.is_a?(Binding)
_b = _arg
elsif _arg.nil?
_b = binding()
else
raise ArgumentError.new("#{self.class.name}#result(): argument should be Binding or Hash but passed #{_arg.class.name} object.")
end
return eval(@src, _b, (@filename || '(erubis'))
end
## invoke context.instance_eval(@src)
def evaluate(_context=Context.new)
_context = Context.new(_context) if _context.is_a?(Hash)
#return _context.instance_eval(@src, @filename || '(erubis)')
#@_proc ||= eval("proc { #{@src} }", Erubis::EMPTY_BINDING, @filename || '(erubis)')
@_proc ||= eval("proc { #{@src} }", binding(), @filename || '(erubis)')
return _context.instance_eval(&@_proc)
end
## if object is an Class or Module then define instance method to it,
## else define singleton method to it.
def def_method(object, method_name, filename=nil)
m = object.is_a?(Module) ? :module_eval : :instance_eval
object.__send__(m, "def #{method_name}; #{@src}; end", filename || @filename || '(erubis)')
end
end
end
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