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7af97dc71f
(https://github.com/ruby/irb/pull/862)
* Powerup show_source by enabling RubyVM.keep_script_lines
* Add file_content field to avoid reading file twice while show_source
* Change path passed to eval, don't change irb_path.
* Encapsulate source coloring logic and binary file check insode class Source
* Add edit command testcase when irb_path does not exist
* Memoize irb_path existence to reduce file existence check calculating eval_path
239683a937
68 lines
1.7 KiB
Ruby
68 lines
1.7 KiB
Ruby
# frozen_string_literal: true
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require_relative "nop"
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require_relative "../source_finder"
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require_relative "../pager"
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require_relative "../color"
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module IRB
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module ExtendCommand
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class ShowSource < Nop
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category "Context"
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description "Show the source code of a given method or constant."
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class << self
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def transform_args(args)
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# Return a string literal as is for backward compatibility
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if args.empty? || string_literal?(args)
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args
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else # Otherwise, consider the input as a String for convenience
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args.strip.dump
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end
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end
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end
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def execute(str = nil)
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unless str.is_a?(String)
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puts "Error: Expected a string but got #{str.inspect}"
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return
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end
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str, esses = str.split(" -")
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super_level = esses ? esses.count("s") : 0
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source = SourceFinder.new(@irb_context).find_source(str, super_level)
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if source
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show_source(source)
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elsif super_level > 0
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puts "Error: Couldn't locate a super definition for #{str}"
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else
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puts "Error: Couldn't locate a definition for #{str}"
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end
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nil
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end
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private
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def show_source(source)
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if source.binary_file?
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content = "\n#{bold('Defined in binary file')}: #{source.file}\n\n"
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else
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code = source.colorized_content || 'Source not available'
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content = <<~CONTENT
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#{bold("From")}: #{source.file}:#{source.line}
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#{code.chomp}
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CONTENT
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end
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Pager.page_content(content)
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end
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def bold(str)
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Color.colorize(str, [:BOLD])
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end
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end
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end
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end
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