diff options
Diffstat (limited to 'lib/irb/cmd/show_source.rb')
-rw-r--r-- | lib/irb/cmd/show_source.rb | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/lib/irb/cmd/show_source.rb b/lib/irb/cmd/show_source.rb deleted file mode 100644 index feff8315f6..0000000000 --- a/lib/irb/cmd/show_source.rb +++ /dev/null @@ -1,96 +0,0 @@ -# frozen_string_literal: true - -require_relative "nop" -require_relative "../color" -require_relative "../ruby-lex" - -# :stopdoc: -module IRB - module ExtendCommand - class ShowSource < Nop - def execute(str = nil) - unless str.is_a?(String) - puts "Error: Expected a string but got #{str.inspect}" - return - end - source = find_source(str) - if source && File.exist?(source.file) - show_source(source) - else - puts "Error: Couldn't locate a definition for #{str}" - end - nil - end - - private - - # @param [IRB::ExtendCommand::ShowSource::Source] source - def show_source(source) - puts - puts "#{bold("From")}: #{source.file}:#{source.first_line}" - puts - code = IRB::Color.colorize_code(File.read(source.file)) - puts code.lines[(source.first_line - 1)...source.last_line].join - puts - end - - def find_source(str) - case str - when /\A[A-Z]\w*(::[A-Z]\w*)*\z/ # Const::Name - eval(str, irb_context.workspace.binding) # trigger autoload - base = irb_context.workspace.binding.receiver.yield_self { |r| r.is_a?(Module) ? r : Object } - file, line = base.const_source_location(str) if base.respond_to?(:const_source_location) # Ruby 2.7+ - when /\A(?<owner>[A-Z]\w*(::[A-Z]\w*)*)#(?<method>[^ :.]+)\z/ # Class#method - owner = eval(Regexp.last_match[:owner], irb_context.workspace.binding) - method = Regexp.last_match[:method] - if owner.respond_to?(:instance_method) && owner.instance_methods.include?(method.to_sym) - file, line = owner.instance_method(method).source_location - end - when /\A((?<receiver>.+)(\.|::))?(?<method>[^ :.]+)\z/ # method, receiver.method, receiver::method - receiver = eval(Regexp.last_match[:receiver] || 'self', irb_context.workspace.binding) - method = Regexp.last_match[:method] - file, line = receiver.method(method).source_location if receiver.respond_to?(method) - end - if file && line - Source.new(file: file, first_line: line, last_line: find_end(file, line)) - end - end - - def find_end(file, first_line) - return first_line unless File.exist?(file) - lex = RubyLex.new - lines = File.read(file).lines[(first_line - 1)..-1] - tokens = RubyLex.ripper_lex_without_warning(lines.join) - - code = +"" - prev_tokens = [] - - # chunk with line number - tokens.chunk { |tok| tok[0][0] }.each do |lnum, chunk| - code << lines[lnum] - prev_tokens.concat chunk - - continue = lex.process_continue(prev_tokens) - code_block_open = lex.check_code_block(code, prev_tokens) - if !continue && !code_block_open - return first_line + lnum - end - end - first_line - end - - def bold(str) - Color.colorize(str, [:BOLD]) - end - - Source = Struct.new( - :file, # @param [String] - file name - :first_line, # @param [String] - first line - :last_line, # @param [String] - last line - keyword_init: true, - ) - private_constant :Source - end - end -end -# :startdoc: |