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# # irb/completor.rb - # $Release Version: 0.9$ # $Revision: 38656 $ # by Keiju ISHITSUKA(keiju@ishitsuka.com) # From Original Idea of shugo@ruby-lang.org # require "readline" module IRB module InputCompletor # :nodoc: @RCS_ID='-$Id: completion.rb 38656 2012-12-29 12:59:06Z keiju $-' # Set of reserved words used by Ruby, you should not use these for # constants or variables ReservedWords = [ "BEGIN", "END", "alias", "and", "begin", "break", "case", "class", "def", "defined", "do", "else", "elsif", "end", "ensure", "false", "for", "if", "in", "module", "next", "nil", "not", "or", "redo", "rescue", "retry", "return", "self", "super", "then", "true", "undef", "unless", "until", "when", "while", "yield", ] CompletionProc = proc { |input| bind = IRB.conf[:MAIN_CONTEXT].workspace.binding # puts "input: #{input}" case input when /^((["'`]).*\2)\.([^.]*)$/ # String receiver = $1 message = Regexp.quote($3) candidates = String.instance_methods.collect{|m| m.to_s} select_message(receiver, message, candidates) when /^(\/[^\/]*\/)\.([^.]*)$/ # Regexp receiver = $1 message = Regexp.quote($2) candidates = Regexp.instance_methods.collect{|m| m.to_s} select_message(receiver, message, candidates) when /^([^\]]*\])\.([^.]*)$/ # Array receiver = $1 message = Regexp.quote($2) candidates = Array.instance_methods.collect{|m| m.to_s} select_message(receiver, message, candidates) when /^([^\}]*\})\.([^.]*)$/ # Proc or Hash receiver = $1 message = Regexp.quote($2) candidates = Proc.instance_methods.collect{|m| m.to_s} candidates |= Hash.instance_methods.collect{|m| m.to_s} select_message(receiver, message, candidates) when /^(:[^:.]*)$/ # Symbol if Symbol.respond_to?(:all_symbols) sym = $1 candidates = Symbol.all_symbols.collect{|s| ":" + s.id2name} candidates.grep(/^#{Regexp.quote(sym)}/) else [] end when /^::([A-Z][^:\.\(]*)$/ # Absolute Constant or class methods receiver = $1 candidates = Object.constants.collect{|m| m.to_s} candidates.grep(/^#{receiver}/).collect{|e| "::" + e} # when /^(((::)?[A-Z][^:.\(]*)+)::?([^:.]*)$/ when /^([A-Z].*)::([^:.]*)$/ # Constant or class methods receiver = $1 message = Regexp.quote($2) begin candidates = eval("#{receiver}.constants.collect{|m| m.to_s}", bind) candidates |= eval("#{receiver}.methods.collect{|m| m.to_s}", bind) rescue Exception candidates = [] end select_message(receiver, message, candidates, "::") when /^(:[^:.]+)(\.|::)([^.]*)$/ # Symbol receiver = $1 sep = $2 message = Regexp.quote($3) candidates = Symbol.instance_methods.collect{|m| m.to_s} select_message(receiver, message, candidates, sep) when /^(-?(0[dbo])?[0-9_]+(\.[0-9_]+)?([eE]-?[0-9]+)?)(\.|::)([^.]*)$/ # Numeric receiver = $1 sep = $5 message = Regexp.quote($6) begin candidates = eval(receiver, bind).methods.collect{|m| m.to_s} rescue Exception candidates = [] end select_message(receiver, message, candidates, sep) when /^(-?0x[0-9a-fA-F_]+)(\.|::)([^.]*)$/ # Numeric(0xFFFF) receiver = $1 sep = $2 message = Regexp.quote($3) begin candidates = eval(receiver, bind).methods.collect{|m| m.to_s} rescue Exception candidates = [] end select_message(receiver, message, candidates, sep) when /^(\$[^.]*)$/ # global var regmessage = Regexp.new(Regexp.quote($1)) candidates = global_variables.collect{|m| m.to_s}.grep(regmessage) # when /^(\$?(\.?[^.]+)+)\.([^.]*)$/ # when /^((\.?[^.]+)+)\.([^.]*)$/ # when /^([^."].*)\.([^.]*)$/ when /^([^."].*)(\.|::)([^.]*)$/ # variable.func or func.func receiver = $1 sep = $2 message = Regexp.quote($3) gv = eval("global_variables", bind).collect{|m| m.to_s} lv = eval("local_variables", bind).collect{|m| m.to_s} iv = eval("instance_variables", bind).collect{|m| m.to_s} cv = eval("self.class.constants", bind).collect{|m| m.to_s} if (gv | lv | iv | cv).include?(receiver) or /^[A-Z]/ =~ receiver && /\./ !~ receiver # foo.func and foo is var. OR # foo::func and foo is var. OR # foo::Const and foo is var. OR # Foo::Bar.func begin candidates = [] rec = eval(receiver, bind) if sep == "::" and rec.kind_of?(Module) candidates = rec.constants.collect{|m| m.to_s} end candidates |= rec.methods.collect{|m| m.to_s} rescue Exception candidates = [] end else # func1.func2 candidates = [] ObjectSpace.each_object(Module){|m| begin name = m.name rescue Exception name = "" end begin next if name != "IRB::Context" and /^(IRB|SLex|RubyLex|RubyToken)/ =~ name rescue Exception next end candidates.concat m.instance_methods(false).collect{|x| x.to_s} } candidates.sort! candidates.uniq! end select_message(receiver, message, candidates, sep) when /^\.([^.]*)$/ # unknown(maybe String) receiver = "" message = Regexp.quote($1) candidates = String.instance_methods(true).collect{|m| m.to_s} select_message(receiver, message, candidates) else candidates = eval("methods | private_methods | local_variables | instance_variables | self.class.constants", bind).collect{|m| m.to_s} (candidates|ReservedWords).grep(/^#{Regexp.quote(input)}/) end } # Set of available operators in Ruby Operators = ["%", "&", "*", "**", "+", "-", "/", "<", "<<", "<=", "<=>", "==", "===", "=~", ">", ">=", ">>", "[]", "[]=", "^", "!", "!=", "!~"] def self.select_message(receiver, message, candidates, sep = ".") candidates.grep(/^#{message}/).collect do |e| case e when /^[a-zA-Z_]/ receiver + sep + e when /^[0-9]/ when *Operators #receiver + " " + e end end end end end if Readline.respond_to?("basic_word_break_characters=") # Readline.basic_word_break_characters= " \t\n\"\\'`><=;|&{(" Readline.basic_word_break_characters= " \t\n`><=;|&{(" end Readline.completion_append_character = nil Readline.completion_proc = IRB::InputCompletor::CompletionProc