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5d78ec8a94
(https://github.com/ruby/irb/pull/658)
* Decouple `edit` command from `show_source`
2 commands should not depend on each other. If `edit` command also needs
to find a source, the source finding logic should be extracted into a
separate class.
* Return nil if is not an actual file path
* Refactor SourceFinder
9790517a0c
56 lines
1.3 KiB
Ruby
56 lines
1.3 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 "../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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source = SourceFinder.new(@irb_context).find_source(str)
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if source
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show_source(source)
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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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puts
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puts "#{bold("From")}: #{source.file}:#{source.first_line}"
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puts
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code = IRB::Color.colorize_code(File.read(source.file))
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puts code.lines[(source.first_line - 1)...source.last_line].join
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puts
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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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