Refactored javascript shell implementation to support JSC and v8.

Also changed configuration in examples Makefile.in to allow switching modes.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/branches/oliverb-javascript-v8@13783 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Tools/javascript/js_shell.h

@@ -0,0 +1,49 @@
+#ifndef JS_SHELL_H
+#define JS_SHELL_H
+
+#include <vector>
+#include <string>
+
+typedef void* HANDLE;
+
+class JSShell {
+
+public:
+  enum Engine {
+    JSC,
+    V8
+  };
+
+public:
+
+  JSShell() {}
+
+  virtual ~JSShell();
+  
+  bool ImportModule(const std::string& name);
+  
+  virtual bool RunScript(const std::string& scriptPath);
+
+  virtual bool RunShell();
+
+protected:
+
+  virtual bool RegisterModule(HANDLE library, const std::string& module_name) = 0;
+
+  virtual bool InitializeEngine() = 0;
+  
+  virtual bool ExecuteScript(const std::string& source, const std::string& name) = 0;
+
+  virtual bool DisposeEngine() = 0;
+
+  static std::string ReadFile(const std::string& fileName);
+
+protected:
+  
+  std::vector<HANDLE> loaded_modules;
+
+};
+
+typedef JSShell* (*JSShellFactory)();
+
+#endif // JS_SHELL_H