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Edit File : completion.rb \| Size : 9.46 KB
# frozen_string_literal: false # # irb/completion.rb - # $Release Version: 0.9$ # $Revision$ # by Keiju ISHITSUKA(keiju@ishitsuka.com) # From Original Idea of shugo@ruby-lang.org # autoload :RDoc, "rdoc" module IRB module InputCompletor # :nodoc: # Set of reserved words used by Ruby, you should not use these for # constants or variables ReservedWords = %w[ __ENCODING__ __LINE__ __FILE__ 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 ] BASIC_WORD_BREAK_CHARACTERS = " \t\n`><=;\|&{(" CompletionProc = proc { \|input\| retrieve_completion_data(input).compact.map{ \|i\| i.encode(Encoding.default_external) } } def self.retrieve_completion_data(input, bind: IRB.conf[:MAIN_CONTEXT].workspace.binding, doc_namespace: false) case input when /^((["'`]).\2)\.([^.])$/ # String receiver = $1 message = Regexp.quote($3) candidates = String.instance_methods.collect{\|m\| m.to_s} if doc_namespace "String.#{message}" else select_message(receiver, message, candidates) end when /^(\/[^\/]\/)\.([^.])$/ # Regexp receiver = $1 message = Regexp.quote($2) candidates = Regexp.instance_methods.collect{\|m\| m.to_s} if doc_namespace "Regexp.#{message}" else select_message(receiver, message, candidates) end when /^([^\]]\])\.([^.])$/ # Array receiver = $1 message = Regexp.quote($2) candidates = Array.instance_methods.collect{\|m\| m.to_s} if doc_namespace "Array.#{message}" else select_message(receiver, message, candidates) end when /^([^\}]\})\.([^.])$/ # Proc or Hash receiver = $1 message = Regexp.quote($2) proc_candidates = Proc.instance_methods.collect{\|m\| m.to_s} hash_candidates = Hash.instance_methods.collect{\|m\| m.to_s} if doc_namespace ["Proc.#{message}", "Hash.#{message}"] else select_message(receiver, message, proc_candidates \| hash_candidates) end when /^(:[^:.])$/ # Symbol return nil if doc_namespace sym = $1 candidates = Symbol.all_symbols.collect do \|s\| ":" + s.id2name.encode(Encoding.default_external) rescue Encoding::UndefinedConversionError # ignore end candidates.grep(/^#{Regexp.quote(sym)}/) when /^::([A-Z][^:\.\(])$/ # Absolute Constant or class methods receiver = $1 candidates = Object.constants.collect{\|m\| m.to_s} if doc_namespace candidates.find { \|i\| i == receiver } else candidates.grep(/^#{receiver}/).collect{\|e\| "::" + e} end when /^([A-Z].)::([^:.])$/ # Constant or class methods receiver = $1 message = Regexp.quote($2) begin candidates = eval("#{receiver}.constants.collect{\|m\| m.to_s}", bind) candidates \|= eval("#{receiver}.methods.collect{\|m\| m.to_s}", bind) rescue Exception candidates = [] end if doc_namespace "#{receiver}::#{message}" else select_message(receiver, message, candidates, "::") end when /^(:[^:.]+)(\.\|::)([^.])$/ # Symbol receiver = $1 sep = $2 message = Regexp.quote($3) candidates = Symbol.instance_methods.collect{\|m\| m.to_s} if doc_namespace "Symbol.#{message}" else select_message(receiver, message, candidates, sep) end when /^(?<num>-?(?:0[dbo])?[0-9_]+(?:\.[0-9_]+)?(?:(?:[eE][+-]?[0-9]+)?i?\|r)?)(?<sep>\.\|::)(?<mes>[^.])$/ # Numeric receiver = $~[:num] sep = $~[:sep] message = Regexp.quote($~[:mes]) begin instance = eval(receiver, bind) if doc_namespace "#{instance.class.name}.#{message}" else candidates = instance.methods.collect{\|m\| m.to_s} select_message(receiver, message, candidates, sep) end rescue Exception if doc_namespace nil else candidates = [] end end when /^(-?0x[0-9a-fA-F_]+)(\.\|::)([^.])$/ # Numeric(0xFFFF) receiver = $1 sep = $2 message = Regexp.quote($3) begin instance = eval(receiver, bind) if doc_namespace "#{instance.class.name}.#{message}" else candidates = instance.methods.collect{\|m\| m.to_s} select_message(receiver, message, candidates, sep) end rescue Exception if doc_namespace nil else candidates = [] end end when /^(\$[^.])$/ # global var gvar = $1 all_gvars = global_variables.collect{\|m\| m.to_s} if doc_namespace all_gvars.find{ \|i\| i == gvar } else all_gvars.grep(Regexp.new(Regexp.quote(gvar))) end when /^([^."].)(\.\|::)([^.])$/ # variable.func or func.func receiver = $1 sep = $2 message = Regexp.quote($3) gv = eval("global_variables", bind).collect{\|m\| m.to_s}.push("true", "false", "nil") lv = eval("local_variables", bind).collect{\|m\| m.to_s} iv = eval("instance_variables", bind).collect{\|m\| m.to_s} cv = eval("self.class.constants", bind).collect{\|m\| m.to_s} if (gv \| lv \| iv \| cv).include?(receiver) or /^[A-Z]/ =~ receiver && /\./ !~ receiver # foo.func and foo is var. OR # foo::func and foo is var. OR # foo::Const and foo is var. OR # Foo::Bar.func begin candidates = [] rec = eval(receiver, bind) if sep == "::" and rec.kind_of?(Module) candidates = rec.constants.collect{\|m\| m.to_s} end candidates \|= rec.methods.collect{\|m\| m.to_s} rescue Exception candidates = [] end else # func1.func2 candidates = [] to_ignore = ignored_modules ObjectSpace.each_object(Module){\|m\| next if (to_ignore.include?(m) rescue true) candidates.concat m.instance_methods(false).collect{\|x\| x.to_s} } candidates.sort! candidates.uniq! end if doc_namespace "#{rec.class.name}#{sep}#{candidates.find{ \|i\| i == message }}" else select_message(receiver, message, candidates, sep) end when /^\.([^.])$/ # unknown(maybe String) receiver = "" message = Regexp.quote($1) candidates = String.instance_methods(true).collect{\|m\| m.to_s} if doc_namespace "String.#{candidates.find{ \|i\| i == message }}" else select_message(receiver, message, candidates) end else candidates = eval("methods \| private_methods \| local_variables \| instance_variables \| self.class.constants", bind).collect{\|m\| m.to_s} candidates \|= ReservedWords if doc_namespace candidates.find{ \|i\| i == input } else candidates.grep(/^#{Regexp.quote(input)}/) end end end PerfectMatchedProc = ->(matched, bind: IRB.conf[:MAIN_CONTEXT].workspace.binding) { RDocRIDriver \|\|= RDoc::RI::Driver.new if matched =~ /\A(?:::)?RubyVM/ and not ENV['RUBY_YES_I_AM_NOT_A_NORMAL_USER'] IRB.send(:easter_egg) return end namespace = retrieve_completion_data(matched, bind: bind, doc_namespace: true) return unless namespace if namespace.is_a?(Array) out = RDoc::Markup::Document.new namespace.each do \|m\| begin RDocRIDriver.add_method(out, m) rescue RDoc::RI::Driver::NotFoundError end end RDocRIDriver.display(out) else begin RDocRIDriver.display_names([namespace]) rescue RDoc::RI::Driver::NotFoundError end end } # Set of available operators in Ruby Operators = %w[% & ** + - / < << <= <=> == === =~ > >= >> [] []= ^ ! != !~] 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 def self.ignored_modules # We could cache the result, but this is very fast already. # By using this approach, we avoid Module#name calls, which are # relatively slow when there are a lot of anonymous modules defined. s = {} scanner = lambda do \|m\| next if s.include?(m) # IRB::ExtendCommandBundle::EXCB recurses. s[m] = true m.constants(false).each do \|c\| value = m.const_get(c) scanner.call(value) if value.is_a?(Module) end end %i(IRB RubyLex).each do \|sym\| next unless Object.const_defined?(sym) scanner.call(Object.const_get(sym)) end s.delete(IRB::Context) if defined?(IRB::Context) s end end end Back

Edit File : completion.rb | Size : 9.46 KB

# frozen_string_literal: false
#
#   irb/completion.rb -
#   	$Release Version: 0.9$
#   	$Revision$
#   	by Keiju ISHITSUKA(keiju@ishitsuka.com)
#       From Original Idea of shugo@ruby-lang.org
#

autoload :RDoc, "rdoc"

module IRB
  module InputCompletor # :nodoc:

# Set of reserved words used by Ruby, you should not use these for
    # constants or variables
    ReservedWords = %w[
      __ENCODING__ __LINE__ __FILE__
      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
    ]

BASIC_WORD_BREAK_CHARACTERS = " \t\n`><=;|&{("

CompletionProc = proc { |input|
      retrieve_completion_data(input).compact.map{ |i| i.encode(Encoding.default_external) }
    }

def self.retrieve_completion_data(input, bind: IRB.conf[:MAIN_CONTEXT].workspace.binding, doc_namespace: false)
      case input
      when /^((["'`]).*\2)\.([^.]*)$/
        # String
        receiver = $1
        message = Regexp.quote($3)

candidates = String.instance_methods.collect{|m| m.to_s}
        if doc_namespace
          "String.#{message}"
        else
          select_message(receiver, message, candidates)
        end

when /^(\/[^\/]*\/)\.([^.]*)$/
        # Regexp
        receiver = $1
        message = Regexp.quote($2)

candidates = Regexp.instance_methods.collect{|m| m.to_s}
        if doc_namespace
          "Regexp.#{message}"
        else
          select_message(receiver, message, candidates)
        end

when /^([^\]]*\])\.([^.]*)$/
        # Array
        receiver = $1
        message = Regexp.quote($2)

candidates = Array.instance_methods.collect{|m| m.to_s}
        if doc_namespace
          "Array.#{message}"
        else
          select_message(receiver, message, candidates)
        end

when /^([^\}]*\})\.([^.]*)$/
        # Proc or Hash
        receiver = $1
        message = Regexp.quote($2)

proc_candidates = Proc.instance_methods.collect{|m| m.to_s}
        hash_candidates = Hash.instance_methods.collect{|m| m.to_s}
        if doc_namespace
          ["Proc.#{message}", "Hash.#{message}"]
        else
          select_message(receiver, message, proc_candidates | hash_candidates)
        end

when /^(:[^:.]*)$/
        # Symbol
        return nil if doc_namespace
        sym = $1
        candidates = Symbol.all_symbols.collect do |s|
          ":" + s.id2name.encode(Encoding.default_external)
        rescue Encoding::UndefinedConversionError
          # ignore
        end
        candidates.grep(/^#{Regexp.quote(sym)}/)

when /^::([A-Z][^:\.\(]*)$/
        # Absolute Constant or class methods
        receiver = $1
        candidates = Object.constants.collect{|m| m.to_s}
        if doc_namespace
          candidates.find { |i| i == receiver }
        else
          candidates.grep(/^#{receiver}/).collect{|e| "::" + e}
        end

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
        if doc_namespace
          "#{receiver}::#{message}"
        else
          select_message(receiver, message, candidates, "::")
        end

when /^(:[^:.]+)(\.|::)([^.]*)$/
        # Symbol
        receiver = $1
        sep = $2
        message = Regexp.quote($3)

candidates = Symbol.instance_methods.collect{|m| m.to_s}
        if doc_namespace
          "Symbol.#{message}"
        else
          select_message(receiver, message, candidates, sep)
        end

when /^(?<num>-?(?:0[dbo])?[0-9_]+(?:\.[0-9_]+)?(?:(?:[eE][+-]?[0-9]+)?i?|r)?)(?<sep>\.|::)(?<mes>[^.]*)$/
        # Numeric
        receiver = $~[:num]
        sep = $~[:sep]
        message = Regexp.quote($~[:mes])

begin
          instance = eval(receiver, bind)
          if doc_namespace
            "#{instance.class.name}.#{message}"
          else
            candidates = instance.methods.collect{|m| m.to_s}
            select_message(receiver, message, candidates, sep)
          end
        rescue Exception
          if doc_namespace
            nil
          else
            candidates = []
          end
        end

when /^(-?0x[0-9a-fA-F_]+)(\.|::)([^.]*)$/
        # Numeric(0xFFFF)
        receiver = $1
        sep = $2
        message = Regexp.quote($3)

when /^(\$[^.]*)$/
        # global var
        gvar = $1
        all_gvars = global_variables.collect{|m| m.to_s}
        if doc_namespace
          all_gvars.find{ |i| i == gvar }
        else
          all_gvars.grep(Regexp.new(Regexp.quote(gvar)))
        end

when /^([^."].*)(\.|::)([^.]*)$/
        # variable.func or func.func
        receiver = $1
        sep = $2
        message = Regexp.quote($3)

gv = eval("global_variables", bind).collect{|m| m.to_s}.push("true", "false", "nil")
        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 = []
          to_ignore = ignored_modules
          ObjectSpace.each_object(Module){|m|
            next if (to_ignore.include?(m) rescue true)
            candidates.concat m.instance_methods(false).collect{|x| x.to_s}
          }
          candidates.sort!
          candidates.uniq!
        end
        if doc_namespace
          "#{rec.class.name}#{sep}#{candidates.find{ |i| i == message }}"
        else
          select_message(receiver, message, candidates, sep)
        end

when /^\.([^.]*)$/
        # unknown(maybe String)

receiver = ""
        message = Regexp.quote($1)

candidates = String.instance_methods(true).collect{|m| m.to_s}
        if doc_namespace
          "String.#{candidates.find{ |i| i == message }}"
        else
          select_message(receiver, message, candidates)
        end

else
        candidates = eval("methods | private_methods | local_variables | instance_variables | self.class.constants", bind).collect{|m| m.to_s}
        candidates |= ReservedWords

if doc_namespace
          candidates.find{ |i| i == input }
        else
          candidates.grep(/^#{Regexp.quote(input)}/)
        end
      end
    end

PerfectMatchedProc = ->(matched, bind: IRB.conf[:MAIN_CONTEXT].workspace.binding) {
      RDocRIDriver ||= RDoc::RI::Driver.new
      if matched =~ /\A(?:::)?RubyVM/ and not ENV['RUBY_YES_I_AM_NOT_A_NORMAL_USER']
        IRB.send(:easter_egg)
        return
      end
      namespace = retrieve_completion_data(matched, bind: bind, doc_namespace: true)
      return unless namespace
      if namespace.is_a?(Array)
        out = RDoc::Markup::Document.new
        namespace.each do |m|
          begin
            RDocRIDriver.add_method(out, m)
          rescue RDoc::RI::Driver::NotFoundError
          end
        end
        RDocRIDriver.display(out)
      else
        begin
          RDocRIDriver.display_names([namespace])
        rescue RDoc::RI::Driver::NotFoundError
        end
      end
    }

# Set of available operators in Ruby
    Operators = %w[% & * ** + - / < << <= <=> == === =~ > >= >> [] []= ^ ! != !~]

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

def self.ignored_modules
      # We could cache the result, but this is very fast already.
      # By using this approach, we avoid Module#name calls, which are
      # relatively slow when there are a lot of anonymous modules defined.
      s = {}

scanner = lambda do |m|
        next if s.include?(m) # IRB::ExtendCommandBundle::EXCB recurses.
        s[m] = true
        m.constants(false).each do |c|
          value = m.const_get(c)
          scanner.call(value) if value.is_a?(Module)
        end
      end

%i(IRB RubyLex).each do |sym|
        next unless Object.const_defined?(sym)
        scanner.call(Object.const_get(sym))
      end

s.delete(IRB::Context) if defined?(IRB::Context)

s
    end
  end
end

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