diff options
Diffstat (limited to 'ruby_1_8_6/lib/irb/ext/history.rb')
-rw-r--r-- | ruby_1_8_6/lib/irb/ext/history.rb | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/ruby_1_8_6/lib/irb/ext/history.rb b/ruby_1_8_6/lib/irb/ext/history.rb new file mode 100644 index 0000000000..40f8692e8b --- /dev/null +++ b/ruby_1_8_6/lib/irb/ext/history.rb @@ -0,0 +1,110 @@ +# +# history.rb - +# $Release Version: 0.9.5$ +# $Revision$ +# $Date$ +# by Keiju ISHITSUKA(keiju@ruby-lang.org) +# +# -- +# +# +# + +module IRB + + class Context + + NOPRINTING_IVARS.push "@eval_history_values" + + alias _set_last_value set_last_value + + def set_last_value(value) + _set_last_value(value) + +# @workspace.evaluate self, "_ = IRB.CurrentContext.last_value" + if @eval_history #and !@eval_history_values.equal?(llv) + @eval_history_values.push @line_no, @last_value + @workspace.evaluate self, "__ = IRB.CurrentContext.instance_eval{@eval_history_values}" + end + + @last_value + end + + attr_reader :eval_history + def eval_history=(no) + if no + if defined?(@eval_history) && @eval_history + @eval_history_values.size(no) + else + @eval_history_values = History.new(no) + IRB.conf[:__TMP__EHV__] = @eval_history_values + @workspace.evaluate(self, "__ = IRB.conf[:__TMP__EHV__]") + IRB.conf.delete(:__TMP_EHV__) + end + else + @eval_history_values = nil + end + @eval_history = no + end + end + + class History + @RCS_ID='-$Id$-' + + def initialize(size = 16) + @size = size + @contents = [] + end + + def size(size) + if size != 0 && size < @size + @contents = @contents[@size - size .. @size] + end + @size = size + end + + def [](idx) + begin + if idx >= 0 + @contents.find{|no, val| no == idx}[1] + else + @contents[idx][1] + end + rescue NameError + nil + end + end + + def push(no, val) + @contents.push [no, val] + @contents.shift if @size != 0 && @contents.size > @size + end + + alias real_inspect inspect + + def inspect + if @contents.empty? + return real_inspect + end + + unless (last = @contents.pop)[1].equal?(self) + @contents.push last + last = nil + end + str = @contents.collect{|no, val| + if val.equal?(self) + "#{no} ...self-history..." + else + "#{no} #{val.inspect}" + end + }.join("\n") + if str == "" + str = "Empty." + end + @contents.push last if last + str + end + end +end + + |