parsa · December 21, 2016 00:37 · Dec 6, 2013 · Dec 6, 2013 · Dec 6, 2013 · Dec 6, 2013
diff --git a/libhello.cpp b/libhello.cpp
@@ -1,7 +1,5 @@
 #include <iostream>
 
-class User;
-
 class User
 {
     std::string name;

diff --git a/introduce.rst → README.rst b/introduce.rst → README.rst
diff --git a/introduce.rst b/introduce.rst
@@ -0,0 +1,21 @@
+Run with Python::
+
+    pip-2.7 install cffi
+    PYTHON=python2.7 sh go.sh
+
+Run with PyPy::
+
+    pip-pypy install cffi
+    PYTHON=pypy sh go.sh
+
+Run with Py3K::
+
+    pip-3.3 install cffi
+    PYTHON=python3.3 sh go.sh
+
+The expected output::
+
+    => now run the native one
+    hello, world
+    => now run the pypy bound one
+    hello, cffi
diff --git a/go.sh b/go.sh
@@ -0,0 +1,13 @@
+#!/usr/bin/env sh
+
+set -e
+
+[ -z "$PYTHON" ] && PYTHON="python"
+
+g++ -o ./hello ./libhello.cpp
+echo "=> now run the native one"
+./hello
+
+g++ -o ./libhello.so ./libhello.cpp -fPIC -shared
+echo "=> now run the $PYTHON bound one"
+python hello.py
diff --git a/hello.py b/hello.py
@@ -0,0 +1,14 @@
+import cffi
+
+
+ffi = cffi.FFI()
+ffi.cdef("void cffi_hello(char *name);")
+C = ffi.dlopen("./libhello.so")
+
+
+def hello(name):
+    C.cffi_hello(name)
+
+
+if __name__ == "__main__":
+    hello("cffi")
diff --git a/libhello.cpp b/libhello.cpp
@@ -0,0 +1,33 @@
+#include <iostream>
+
+class User;
+
+class User
+{
+    std::string name;
+    public:
+        User(char *name):name(name) {}
+        User(std::string &name):name(name) {}
+
+        std::string greet() { return "hello, " + name; }
+};
+
+void hello(char *name)
+{
+    User user(name);
+    std::cout << user.greet() << std::endl;
+}
+
+int main()
+{
+    hello((char *) "world");
+    return 0;
+}
+
+extern "C"
+{
+    extern void cffi_hello(char *name)
+    {
+        return hello(name);
+    }
+}
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