79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
//////////////////////////////////////////////////////
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//
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// LuaConsole:
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//
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// Used to parse commands that are being interactively typed
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// in by a user.
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//
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// The command syntax is always a single character command,
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// followed by arguments. Only two commands are hardwired:
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//
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// l - evaluate lua expression
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// r - evaluate lua expression with 'return' prepended
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//
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// The console expects you to add lines of text one at a time.
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// After adding a line, the console will recommend one of these
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// actions:
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//
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// 1. DO_NOTHING: Add more lines of text.
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// 2. DO_LUA: Evaluate a lua expression.
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// 3. DO_OTHER: Execute a non-lua command.
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// 4. DO_SYNTAX: Print a lua syntax error.
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//
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//////////////////////////////////////////////////////
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#ifndef LUACONSOLE_HPP
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#define LUACONSOLE_HPP
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#include <string>
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#include "luastack.hpp"
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class LuaConsole {
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public:
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enum {
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DO_NOTHING, // We need more input text.
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DO_COMMAND, // We have a valid non-lua command.
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DO_LUA, // We have a valid lua expression.
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DO_SYNTAX, // We have a syntax error.
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};
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using StringVec = std::vector<std::string>;
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private:
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lua_State *lua_state_;
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int action_;
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std::string raw_input_;
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int lines_;
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std::string lua_expression_;
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StringVec words_;
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std::string syntax_;
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void split_words();
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public:
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LuaConsole();
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~LuaConsole();
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// Get the recommended action.
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int action() const { return action_; }
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// When action is DO_COMMAND, get the command words.
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const StringVec &words() const { return words_; }
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// When action is DO_LUA, get the valid lua expression.
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std::string lua_expression() const { return lua_expression_; }
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// When action is DO_SYNTAX, get the syntax error.
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const std::string &syntax() const { return syntax_; }
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// Add a line of text that was just read from the console.
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void add(std::string line);
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// Read a line of text from stdin and add it.
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void add_stdin();
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// Clear the state.
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void clear();
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};
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#endif // LUACONSOLE_HPP
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