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+// Copyright 2012 Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+// * Neither the name of Google Inc. nor the names of its contributors
+// may be used to endorse or promote products derived from this software
+// without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/// \file examples/interpreter.cpp
+/// Implementation of a basic command-line Lua interpreter.
+
+#include <cstdlib>
+#include <iostream>
+#include <string>
+
+#include <lutok/exceptions.hpp>
+#include <lutok/operations.hpp>
+#include <lutok/state.ipp>
+
+
+/// Executes a Lua statement provided by the user with error checking.
+///
+/// \param state The Lua state in which to process the statement.
+/// \param line The textual statement provided by the user.
+static void
+run_statement(lutok::state& state, const std::string& line)
+{
+ try {
+ // This utility function allows us to feed a given piece of Lua code to
+ // the interpreter and process it. The piece of code can include
+ // multiple statements separated by a semicolon or by a newline
+ // character.
+ lutok::do_string(state, line, 0, 0, 0);
+ } catch (const lutok::error& error) {
+ std::cerr << "ERROR: " << error.what() << '\n';
+ }
+}
+
+
+/// Program's entry point.
+///
+/// \return A system exit code.
+int
+main(void)
+{
+ // Create a new session and load some standard libraries.
+ lutok::state state;
+ state.open_base();
+ state.open_string();
+ state.open_table();
+
+ for (;;) {
+ std::cout << "lua> ";
+ std::cout.flush();
+
+ std::string line;
+ if (!std::getline(std::cin, line).good())
+ break;
+ run_statement(state, line);
+ }
+
+ return EXIT_SUCCESS;
+}