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c697fb7f7c
It is added an INTERNALLIB and not installed. It will be used by kyua. This is a preparatory commit for D24103. Reviewed by: emaste Obtained from: CheriBSD Sponsored by: DARPA
84 lines
2.9 KiB
C++
84 lines
2.9 KiB
C++
// Copyright 2012 Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of Google Inc. nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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/// \file examples/interpreter.cpp
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/// Implementation of a basic command-line Lua interpreter.
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#include <cstdlib>
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#include <iostream>
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#include <string>
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#include <lutok/exceptions.hpp>
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#include <lutok/operations.hpp>
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#include <lutok/state.ipp>
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/// Executes a Lua statement provided by the user with error checking.
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///
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/// \param state The Lua state in which to process the statement.
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/// \param line The textual statement provided by the user.
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static void
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run_statement(lutok::state& state, const std::string& line)
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{
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try {
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// This utility function allows us to feed a given piece of Lua code to
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// the interpreter and process it. The piece of code can include
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// multiple statements separated by a semicolon or by a newline
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// character.
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lutok::do_string(state, line, 0, 0, 0);
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} catch (const lutok::error& error) {
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std::cerr << "ERROR: " << error.what() << '\n';
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}
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}
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/// Program's entry point.
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///
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/// \return A system exit code.
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int
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main(void)
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{
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// Create a new session and load some standard libraries.
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lutok::state state;
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state.open_base();
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state.open_string();
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state.open_table();
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for (;;) {
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std::cout << "lua> ";
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std::cout.flush();
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std::string line;
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if (!std::getline(std::cin, line).good())
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break;
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run_statement(state, line);
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}
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return EXIT_SUCCESS;
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}
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