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Viewing changes to lib/irb/ext/history.rb

  • Committer: Bazaar Package Importer
  • Author(s): akira yamada
  • Date: 2007-03-13 22:11:58 UTC
  • mfrom: (1.1.5 upstream)
  • Revision ID: james.westby@ubuntu.com-20070313221158-h3oql37brlaf2go2
Tags: 1.8.6-1
http://bugs.debian.org/410018
* new upstream version, 1.8.6.
* libruby1.8 conflicts with libopenssl-ruby1.8 (< 1.8.6) (closes: #410018)
* changed packaging style to cdbs from dbs.

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lib/irb/ext/history.rb
 
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#
 
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#   history.rb - 
 
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#       $Release Version: 0.9.5$
 
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#       $Revision: 11708 $
 
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#       $Date: 2007-02-13 08:01:19 +0900 (Tue, 13 Feb 2007) $
 
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#       by Keiju ISHITSUKA(keiju@ruby-lang.org)
 
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#
 
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# --
 
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#
 
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#   
 
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#
 
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module IRB
 
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  class Context
 
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    NOPRINTING_IVARS.push "@eval_history_values"
 
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    alias _set_last_value set_last_value
 
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    def set_last_value(value)
 
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      _set_last_value(value)
 
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#      @workspace.evaluate self, "_ = IRB.CurrentContext.last_value"
 
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      if @eval_history #and !@eval_history_values.equal?(llv)
 
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        @eval_history_values.push @line_no, @last_value
 
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        @workspace.evaluate self, "__ = IRB.CurrentContext.instance_eval{@eval_history_values}"
 
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      end
 
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      @last_value
 
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    end
 
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    attr_reader :eval_history
 
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    def eval_history=(no)
 
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      if no
 
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        if defined?(@eval_history) && @eval_history
 
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          @eval_history_values.size(no)
 
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        else
 
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          @eval_history_values = History.new(no)
 
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          IRB.conf[:__TMP__EHV__] = @eval_history_values
 
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          @workspace.evaluate(self, "__ = IRB.conf[:__TMP__EHV__]")
 
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          IRB.conf.delete(:__TMP_EHV__)
 
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        end
 
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      else
 
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        @eval_history_values = nil
 
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      end
 
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      @eval_history = no
 
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    end
 
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  end
 
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  class History
 
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    @RCS_ID='-$Id: history.rb 11708 2007-02-12 23:01:19Z shyouhei $-'
 
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    def initialize(size = 16)
 
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      @size = size
 
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      @contents = []
 
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    end
 
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    def size(size)
 
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      if size != 0 && size < @size 
 
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        @contents = @contents[@size - size .. @size]
 
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      end
 
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      @size = size
 
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    end
 
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    def [](idx)
 
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      begin
 
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        if idx >= 0
 
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          @contents.find{|no, val| no == idx}[1]
 
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        else
 
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          @contents[idx][1]
 
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        end
 
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      rescue NameError
 
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        nil
 
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      end
 
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    end
 
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    def push(no, val)
 
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      @contents.push [no, val]
 
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      @contents.shift if @size != 0 && @contents.size > @size
 
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    end
 
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    alias real_inspect inspect
 
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    def inspect
 
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      if @contents.empty?
 
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        return real_inspect
 
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      end
 
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      unless (last = @contents.pop)[1].equal?(self)
 
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        @contents.push last
 
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        last = nil
 
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      end
 
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      str = @contents.collect{|no, val|
 
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        if val.equal?(self)
 
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          "#{no} ...self-history..."
 
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        else
 
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          "#{no} #{val.inspect}"
 
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        end
 
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      }.join("\n")
 
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      if str == ""
 
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        str = "Empty."
 
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      end
 
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      @contents.push last if last
 
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      str
 
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    end
 
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  end
 
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end
 
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