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# frozen_string_literal: true
require_relative "../source_finder"
require_relative "../pager"
require_relative "../color"
module IRB
module Command
class ShowSource < Base
category "Context"
description "Show the source code of a given method, class/module, or constant."
help_message <<~HELP_MESSAGE
Usage: show_source [target] [-s]
-s Show the super method. You can stack it like `-ss` to show the super of the super, etc.
Examples:
show_source Foo
show_source Foo#bar
show_source Foo#bar -s
show_source Foo.baz
show_source Foo::BAR
HELP_MESSAGE
class << self
def transform_args(args)
# Return a string literal as is for backward compatibility
if args.empty? || string_literal?(args)
args
else # Otherwise, consider the input as a String for convenience
args.strip.dump
end
end
end
def execute(str = nil)
unless str.is_a?(String)
puts "Error: Expected a string but got #{str.inspect}"
return
end
str, esses = str.split(" -")
super_level = esses ? esses.count("s") : 0
source = SourceFinder.new(@irb_context).find_source(str, super_level)
if source
show_source(source)
elsif super_level > 0
puts "Error: Couldn't locate a super definition for #{str}"
else
puts "Error: Couldn't locate a definition for #{str}"
end
nil
end
private
def show_source(source)
if source.binary_file?
content = "\n#{bold('Defined in binary file')}: #{source.file}\n\n"
else
code = source.colorized_content || 'Source not available'
content = <<~CONTENT
#{bold("From")}: #{source.file}:#{source.line}
#{code.chomp}
CONTENT
end
Pager.page_content(content)
end
def bold(str)
Color.colorize(str, [:BOLD])
end
end
end
end
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