Javascript examples.

Examples/javascript/pointer/Makefile

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+TOP = ../..
+SWIG = $(TOP)/../preinst-swig
+CXXSRCS    = example.cxx
+JS_SCRIPT = runme.js
+TARGET = example
+INTERFACE = example.i
+
+wrapper::
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
+	SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' javascript_wrapper_cpp
+
+build:: wrapper
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
+	SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' javascript_build
+
+clean::
+	$(MAKE) -f $(TOP)/Makefile javascript_clean
+
+check:: build
+	$(MAKE) -f $(TOP)/Makefile JSCXXSRCS='$(JSCXXSRCS)' TARGET='$(TARGET)' \
+		TOP='$(TOP)' JS_SCRIPT='$(JS_SCRIPT)' javascript_run

Examples/javascript/pointer/binding.gyp

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+{
+  "targets": [
+    {
+      "target_name": "example",
+      "sources": [ "example.cxx", "example_wrap.cxx" ]
+    }
+  ]
+}

Examples/javascript/pointer/example.cxx

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+/* File : example.c */
+
+void add(int *x, int *y, int *result) {
+  *result = *x + *y;
+}
+
+void subtract(int *x, int *y, int *result) {
+  *result = *x - *y;
+}
+
+int divide(int n, int d, int *r) {
+   int q;
+   q = n/d;
+   *r = n - q*d;
+   return q;
+}

Examples/javascript/pointer/example.i

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+/* File : example.i */
+%module example
+
+%{
+extern void add(int *, int *, int *);
+extern void subtract(int *, int *, int *);
+extern int divide(int, int, int *);
+%}
+
+/* This example illustrates a couple of different techniques
+   for manipulating C pointers */
+
+/* First we'll use the pointer library */
+extern void add(int *x, int *y, int *result);
+%include cpointer.i
+%pointer_functions(int, intp);
+
+/* Next we'll use some typemaps */
+
+%include typemaps.i
+extern void subtract(int *INPUT, int *INPUT, int *OUTPUT);
+
+/* Next we'll use typemaps and the %apply directive */
+
+%apply int *OUTPUT { int *r };
+extern int divide(int n, int d, int *r);
+
+
+
+

Examples/javascript/pointer/runme.js

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+var example = require("./build/Release/example");
+
+// First create some objects using the pointer library.
+console.log("Testing the pointer library\n");
+a = example.new_intp();
+b = example.new_intp();
+c = example.new_intp();
+
+example.intp_assign(a,37);
+example.intp_assign(b,42);
+
+console.log(" a = " + example.intp_value(a) + "\n");
+console.log(" b = " + example.intp_value(b) + "\n");
+console.log(" c = " + example.intp_value(c) + "\n");
+
+//// Call the add() function with some pointers
+example.add(a, b, c);
+
+//
+//// Now get the result
+r = example.intp_value(c);
+console.log(" 37 + 42 = " + r + "\n");
+
+// Clean up the pointers
+example.delete_intp(a);
+example.delete_intp(b);
+example.delete_intp(c);
+
+//// Now try the typemap library
+//// This should be much easier. Now how it is no longer
+//// necessary to manufacture pointers.
+//"OUTPUT" Mapping is not supported
+//console.log("Trying the typemap library");
+//r = example.subtract(37,42);
+//console.log("37 - 42 =" + r);