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Diffstat (limited to 'ruby_2_2/lib/irb/xmp.rb')
| -rw-r--r-- | ruby_2_2/lib/irb/xmp.rb | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/ruby_2_2/lib/irb/xmp.rb b/ruby_2_2/lib/irb/xmp.rb deleted file mode 100644 index 449f04328b..0000000000 --- a/ruby_2_2/lib/irb/xmp.rb +++ /dev/null @@ -1,169 +0,0 @@ -# -# xmp.rb - irb version of gotoken xmp -# $Release Version: 0.9$ -# $Revision$ -# by Keiju ISHITSUKA(Nippon Rational Inc.) -# -# -- -# -# -# - -require "irb" -require "irb/frame" - -# An example printer for irb. -# -# It's much like the standard library PrettyPrint, that shows the value of each -# expression as it runs. -# -# In order to use this library, you must first require it: -# -# require 'irb/xmp' -# -# Now, you can take advantage of the Object#xmp convenience method. -# -# xmp <<END -# foo = "bar" -# baz = 42 -# END -# #=> foo = "bar" -# #==>"bar" -# #=> baz = 42 -# #==>42 -# -# You can also create an XMP object, with an optional binding to print -# expressions in the given binding: -# -# ctx = binding -# x = XMP.new ctx -# x.puts -# #=> today = "a good day" -# #==>"a good day" -# ctx.eval 'today # is what?' -# #=> "a good day" -class XMP - - # Creates a new XMP object. - # - # The top-level binding or, optional +bind+ parameter will be used when - # creating the workspace. See WorkSpace.new for more information. - # - # This uses the +:XMP+ prompt mode, see IRB@Customizing+the+IRB+Prompt for - # full detail. - def initialize(bind = nil) - IRB.init_config(nil) - - IRB.conf[:PROMPT_MODE] = :XMP - - bind = IRB::Frame.top(1) unless bind - ws = IRB::WorkSpace.new(bind) - @io = StringInputMethod.new - @irb = IRB::Irb.new(ws, @io) - @irb.context.ignore_sigint = false - - IRB.conf[:MAIN_CONTEXT] = @irb.context - end - - # Evaluates the given +exps+, for example: - # - # require 'irb/xmp' - # x = XMP.new - # - # x.puts '{:a => 1, :b => 2, :c => 3}' - # #=> {:a => 1, :b => 2, :c => 3} - # # ==>{:a=>1, :b=>2, :c=>3} - # x.puts 'foo = "bar"' - # # => foo = "bar" - # # ==>"bar" - def puts(exps) - @io.puts exps - - if @irb.context.ignore_sigint - begin - trap_proc_b = trap("SIGINT"){@irb.signal_handle} - catch(:IRB_EXIT) do - @irb.eval_input - end - ensure - trap("SIGINT", trap_proc_b) - end - else - catch(:IRB_EXIT) do - @irb.eval_input - end - end - end - - # A custom InputMethod class used by XMP for evaluating string io. - class StringInputMethod < IRB::InputMethod - # Creates a new StringInputMethod object - def initialize - super - @exps = [] - end - - # Whether there are any expressions left in this printer. - def eof? - @exps.empty? - end - - # Reads the next expression from this printer. - # - # See IO#gets for more information. - def gets - while l = @exps.shift - next if /^\s+$/ =~ l - l.concat "\n" - print @prompt, l - break - end - l - end - - # Concatenates all expressions in this printer, separated by newlines. - # - # An Encoding::CompatibilityError is raised of the given +exps+'s encoding - # doesn't match the previous expression evaluated. - def puts(exps) - if @encoding and exps.encoding != @encoding - enc = Encoding.compatible?(@exps.join("\n"), exps) - if enc.nil? - raise Encoding::CompatibilityError, "Encoding in which the passed expression is encoded is not compatible to the preceding's one" - else - @encoding = enc - end - else - @encoding = exps.encoding - end - @exps.concat exps.split(/\n/) - end - - # Returns the encoding of last expression printed by #puts. - attr_reader :encoding - end -end - -# A convenience method that's only available when the you require the IRB::XMP standard library. -# -# Creates a new XMP object, using the given expressions as the +exps+ -# parameter, and optional binding as +bind+ or uses the top-level binding. Then -# evaluates the given expressions using the +:XMP+ prompt mode. -# -# For example: -# -# require 'irb/xmp' -# ctx = binding -# xmp 'foo = "bar"', ctx -# #=> foo = "bar" -# #==>"bar" -# ctx.eval 'foo' -# #=> "bar" -# -# See XMP.new for more information. -def xmp(exps, bind = nil) - bind = IRB::Frame.top(1) unless bind - xmp = XMP.new(bind) - xmp.puts exps - xmp -end |