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95 lines
2.8 KiB
Ruby
95 lines
2.8 KiB
Ruby
class Pry
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class Command::Play < Pry::ClassCommand
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match 'play'
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group 'Editing'
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description 'Playback a string variable, method, line, or file as input.'
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banner <<-'BANNER'
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Usage: play [OPTIONS] [--help]
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The play command enables you to replay code from files and methods as if they
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were entered directly in the Pry REPL.
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play --lines 149..153 # assumes current context
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play -i 20 --lines 1..3 # assumes lines of the input expression at 20
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play -o 4 # the output of of an expression at 4
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play Pry#repl -l 1..-1 # play the contents of Pry#repl method
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play -e 2 # play from specified line until end of valid expression
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play hello.rb # play a file
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play Rakefile -l 5 # play line 5 of a file
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play -d hi # play documentation of hi method
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play hi --open # play hi method and leave it open
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https://github.com/pry/pry/wiki/User-Input#wiki-Play
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BANNER
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def options(opt)
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CodeCollector.inject_options(opt)
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opt.on :open, 'Plays the selected content except the last line. Useful' \
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' for replaying methods and leaving the method definition' \
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' "open". `amend-line` can then be used to' \
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' modify the method.'
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opt.on :e, :expression=, 'Executes until end of valid expression', :as => Integer
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end
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def process
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@cc = CodeCollector.new(args, opts, _pry_)
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perform_play
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run "show-input" unless Pry::Code.complete_expression?(eval_string)
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end
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def perform_play
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eval_string << content_after_options
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run "fix-indent"
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end
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def content_after_options
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if opts.present?(:open)
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restrict_to_lines(content, (0..-2))
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elsif opts.present?(:expression)
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content_at_expression
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else
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content
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end
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end
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def content_at_expression
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code_object.expression_at(opts[:expression])
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end
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def code_object
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Pry::Code.new(content)
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end
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def should_use_default_file?
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!args.first && !opts.present?(:in) && !opts.present?(:out)
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end
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def content
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if should_use_default_file?
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file_content
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else
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@cc.content
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end
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end
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# The file to play from when no code object is specified.
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# e.g `play --lines 4..10`
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def default_file
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target.eval("__FILE__") && File.expand_path(target.eval("__FILE__"))
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end
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def file_content
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if default_file && File.exists?(default_file)
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@cc.restrict_to_lines(File.read(default_file), @cc.line_range)
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else
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raise CommandError, "File does not exist! File was: #{default_file.inspect}"
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end
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end
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end
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Pry::Commands.add_command(Pry::Command::Play)
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end
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