class WebConsole::Evaluator
Simple Ruby code evaluator.
This class wraps a Binding
object and evaluates code inside of
it. The difference of a regular Binding
eval is that
Evaluator
will always return a string and will format
exception output.
Public Class Methods
new(binding = TOPLEVEL_BINDING)
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# File lib/web_console/evaluator.rb, line 13 def initialize(binding = TOPLEVEL_BINDING) @binding = binding end
Public Instance Methods
eval(input)
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# File lib/web_console/evaluator.rb, line 17 def eval(input) "=> #{@binding.eval(input).inspect}\n" rescue Exception => exc format_exception(exc) end
Private Instance Methods
format_exception(exc)
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# File lib/web_console/evaluator.rb, line 25 def format_exception(exc) backtrace = cleaner.clean(Array(exc.backtrace) - caller) format = "#{exc.class.name}: #{exc}\n" format << backtrace.map { |trace| "\tfrom #{trace}\n" }.join format end