💿🐜 Antkeeper source code
https://antkeeper.com
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144 lines
3.7 KiB
144 lines
3.7 KiB
/*
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* Copyright (C) 2017-2019 Christopher J. Howard
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*
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* This file is part of Antkeeper Source Code.
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*
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* Antkeeper Source Code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper Source Code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper Source Code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "console.hpp"
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#include <sstream>
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template<>
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int ArgumentParser<int>::parse(const std::string& argument)
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{
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return std::stoi(argument);
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}
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template<>
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unsigned int ArgumentParser<unsigned int>::parse(const std::string& argument)
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{
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return static_cast<unsigned int>(std::stoul(argument));
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}
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template<>
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long ArgumentParser<long>::parse(const std::string& argument)
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{
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return std::stol(argument);
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}
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template<>
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unsigned long ArgumentParser<unsigned long>::parse(const std::string& argument)
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{
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return std::stoul(argument);
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}
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template<>
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float ArgumentParser<float>::parse(const std::string& argument)
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{
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return std::stof(argument);
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}
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template<>
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double ArgumentParser<double>::parse(const std::string& argument)
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{
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return std::stod(argument);
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}
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template<>
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std::string ArgumentParser<std::string>::parse(const std::string& argument)
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{
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return argument;
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}
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void CommandInterpreter::set(const std::string& name, const std::string& value)
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{
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variables[name] = value;
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}
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void CommandInterpreter::unset(const std::string& name)
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{
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auto it = variables.find(name);
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if (it != variables.end())
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{
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variables.erase(it);
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}
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}
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const std::map<std::string, std::string>& CommandInterpreter::help() const
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{
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return helpStrings;
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}
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std::tuple<std::string, std::vector<std::string>, std::function<void()>> CommandInterpreter::interpret(const std::string& line)
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{
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// Split line into arguments
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std::vector<std::string> arguments;
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std::stringstream stream(line);
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std::string argument;
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while (std::getline(stream, argument, ' '))
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{
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arguments.push_back(argument);
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}
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if (arguments.empty())
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{
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return {std::string(), std::vector<std::string>(), nullptr};
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}
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// Perform variable substitution/expansion on '$' operators
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for (std::string& argument: arguments)
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{
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if (!argument.empty() && argument[0] == '$')
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{
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std::string variableName = argument.substr(1);
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std::string variableValue = variables[variableName];
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argument = variableValue;
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}
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}
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// Get command name
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std::string commandName = arguments[0];
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// Remove command name from arguments
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arguments.erase(arguments.begin());
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// Check command name for member access operator '.'
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std::size_t dotOperatorPosition = commandName.find('.');
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if (dotOperatorPosition != std::string::npos)
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{
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// Get variable name and lookup value
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std::string variableName = commandName.substr(0, dotOperatorPosition);
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std::string variableValue = variables[variableName];
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// Insert variable value at front of the argument vector
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arguments.insert(arguments.begin(), variableValue);
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// Remove variable name from command name
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commandName = commandName.substr(dotOperatorPosition + 1);
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}
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// Find command linker for this command
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auto linker = linkers.find(commandName);
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if (linker == linkers.end())
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{
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return {commandName, arguments, nullptr};
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}
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// Link command function and its arguments into a callable object
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std::function<void()> call = linker->second(arguments);
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return {commandName, arguments, call};
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}
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