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authorJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-16 18:49:26 +0900
committerJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-30 00:39:06 +0900
commitfcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch)
tree64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/lib/irb/ext/math-mode.rb
Fresh start
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diff --git a/jni/ruby/lib/irb/ext/math-mode.rb b/jni/ruby/lib/irb/ext/math-mode.rb
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+#
+# math-mode.rb -
+# $Release Version: 0.9.6$
+# $Revision: 47112 $
+# by Keiju ISHITSUKA(keiju@ruby-lang.org)
+#
+# --
+#
+#
+#
+require "mathn"
+
+module IRB
+ class Context
+ # Returns whether bc mode is enabled.
+ #
+ # See #math_mode=
+ attr_reader :math_mode
+ # Alias for #math_mode
+ alias math? math_mode
+
+ # Sets bc mode, which loads +lib/mathn.rb+ so fractions or matrix are
+ # available.
+ #
+ # Also available as the +-m+ command line option.
+ #
+ # See IRB@Command+line+options and the unix manpage <code>bc(1)</code> for
+ # more information.
+ def math_mode=(opt)
+ if @math_mode == true && !opt
+ IRB.fail CantReturnToNormalMode
+ return
+ end
+
+ @math_mode = opt
+ if math_mode
+ main.extend Math
+ print "start math mode\n" if verbose?
+ end
+ end
+
+ def inspect?
+ @inspect_mode.nil? && !@math_mode or @inspect_mode
+ end
+ end
+end
+