89 lines
2.2 KiB
Ruby
89 lines
2.2 KiB
Ruby
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##
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## $Release: 2.6.5 $
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## copyright(c) 2006-2009 kuwata-lab.com all rights reserved.
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##
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require 'erubis/error'
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require 'erubis/context'
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module Erubis
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EMPTY_BINDING = binding()
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##
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## evaluate code
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##
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module Evaluator
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def self.supported_properties # :nodoc:
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return []
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end
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attr_accessor :src, :filename
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def init_evaluator(properties)
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@filename = properties[:filename]
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end
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def result(*args)
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raise NotSupportedError.new("evaluation of code except Ruby is not supported.")
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end
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def evaluate(*args)
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raise NotSupportedError.new("evaluation of code except Ruby is not supported.")
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end
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end
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##
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## evaluator for Ruby
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##
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module RubyEvaluator
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include Evaluator
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def self.supported_properties # :nodoc:
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list = Evaluator.supported_properties
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return list
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end
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## eval(@src) with binding object
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def result(_binding_or_hash=TOPLEVEL_BINDING)
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_arg = _binding_or_hash
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if _arg.is_a?(Hash)
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_b = binding()
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eval _arg.collect{|k,v| "#{k} = _arg[#{k.inspect}]; "}.join, _b
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elsif _arg.is_a?(Binding)
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_b = _arg
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elsif _arg.nil?
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_b = binding()
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else
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raise ArgumentError.new("#{self.class.name}#result(): argument should be Binding or Hash but passed #{_arg.class.name} object.")
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end
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return eval(@src, _b, (@filename || '(erubis'))
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end
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## invoke context.instance_eval(@src)
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def evaluate(_context=Context.new)
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_context = Context.new(_context) if _context.is_a?(Hash)
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#return _context.instance_eval(@src, @filename || '(erubis)')
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#@_proc ||= eval("proc { #{@src} }", Erubis::EMPTY_BINDING, @filename || '(erubis)')
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@_proc ||= eval("proc { #{@src} }", binding(), @filename || '(erubis)')
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return _context.instance_eval(&@_proc)
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end
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## if object is an Class or Module then define instance method to it,
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## else define singleton method to it.
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def def_method(object, method_name, filename=nil)
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m = object.is_a?(Module) ? :module_eval : :instance_eval
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object.__send__(m, "def #{method_name}; #{@src}; end", filename || @filename || '(erubis)')
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end
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end
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end
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