The great merge

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@4141 626c5289-ae23-0410-ae9c-e8d60b6d4f22

SWIG/Examples/ruby/functor/.cvsignore

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+example_wrap.cxx
+example.dll

SWIG/Examples/ruby/functor/Makefile

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+TOP        = ../..
+SWIG       = $(TOP)/../swig
+TARGET     = example
+INTERFACE  = example.i
+LIBS       = -lm
+
+all::
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
+	TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' ruby_cpp
+
+static::
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
+	TARGET='myruby' INTERFACE='$(INTERFACE)' ruby_cpp_static
+
+clean::
+	$(MAKE) -f $(TOP)/Makefile ruby_clean
+
+check: all

SWIG/Examples/ruby/functor/example.i

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+/* File : example.i */
+%module example
+
+%inline %{
+// From B. Strousjoup, "The C++ Programming Language, Third Edition", p. 514
+template<class T> class Sum {
+   T res;
+public:
+   Sum(T i = 0) : res(i) { }
+   void operator() (T x) { res += x; }
+   T result() const { return res; }
+};
+
+%}
+
+/**
+ * Rename the application operator to call() for Ruby.
+ * Note: this is normally automatic, but if you had to do it yourself
+ * you would use this directive:
+ *
+ *      %rename(call) *::operator();
+ */
+
+// Instantiate a few versions
+%template(IntSum) Sum<int>;
+%template(DoubleSum) Sum<double>;

SWIG/Examples/ruby/functor/runme.rb

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+# Operator overloading example
+require 'example'
+
+a = Example::IntSum.new(0)
+b = Example::DoubleSum.new(100.0)
+
+# Use the objects.  They should be callable just like a normal
+# Ruby function.
+
+(0..100).each do |i|
+  a.call(i)              # note: function call
+  b.call(Math.sqrt(i))   # note: function call
+end
+
+puts a.result
+puts b.result
+