69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
// This file is distributed under the BSD License.
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// See "license.txt" for details.
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// Copyright 2009, Jonathan Turner (jturner@minnow-lang.org)
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// and Jason Turner (lefticus@gmail.com)
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// http://www.chaiscript.com
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#include <iostream>
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#include <chaiscript/chaiscript.hpp>
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void print_help() {
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std::cout << "ChaiScript evaluator. To evaluate and expression, type it and press <enter>." << std::endl;
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std::cout << "Additionally, you can inspect the runtime system using:" << std::endl;
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std::cout << " dump_system() - outputs all functions registered to the system" << std::endl;
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std::cout << " dump_object(x) - dumps information about the given symbol" << std::endl;
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}
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int main(int argc, char *argv[]) {
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std::string input;
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chaiscript::ChaiScript chai;
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if (argc < 2) {
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std::cout << "eval> ";
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std::getline(std::cin, input);
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while (input != "quit") {
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chaiscript::Boxed_Value val;
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if (input == "help") {
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print_help();
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}
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else {
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try {
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//First, we evaluate it
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val = chai.eval(input);
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//Then, we try to print the result of the evaluation to the user
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if (val.get_type_info().m_bare_type_info && *(val.get_type_info().m_bare_type_info) != typeid(void)) {
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try {
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chaiscript::dispatch(chai.get_eval_engine().get_function("print"), chaiscript::Param_List_Builder() << val);
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}
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catch (...) {
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//If we can't, do nothing
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}
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}
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}
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catch (std::exception &e) {
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std::cout << e.what() << std::endl;
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}
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}
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std::cout << "eval> ";
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std::getline(std::cin, input);
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}
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}
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else {
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for (int i = 1; i < argc; ++i) {
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std::string filename(argv[i]);
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try {
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chaiscript::Boxed_Value val = chai.eval_file(argv[i]);
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}
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catch (std::exception &e) {
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std::cout << e.what() << std::endl;
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}
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}
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}
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}
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