You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
/**
|
|
* Alee Forth: A portable and concise Forth implementation in modern C++.
|
|
* Copyright (C) 2023 Clyne Sullivan <clyne@bitgloo.com>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef ALEEFORTH_PARSER_HPP
|
|
#define ALEEFORTH_PARSER_HPP
|
|
|
|
#include "types.hpp"
|
|
|
|
#include <string_view>
|
|
|
|
class Parser
|
|
{
|
|
public:
|
|
/**
|
|
* Parses (and evaluates) the given string using the given state.
|
|
* The string is stored in the state's input buffer, then parseSource()
|
|
* works through that using parseWord(). parseWord() will compile or
|
|
* execute as necessary.
|
|
*/
|
|
static Error parse(State&, const char *);
|
|
|
|
/**
|
|
* Parses (and evaluates) through the words stored in the state's input
|
|
* buffer.
|
|
*/
|
|
static Error parseSource(State&);
|
|
|
|
private:
|
|
/**
|
|
* Parses the given word using the given state.
|
|
*/
|
|
static Error parseWord(State&, Word);
|
|
|
|
/**
|
|
* Attempts to parse the given word into a number.
|
|
*/
|
|
static Error parseNumber(State&, Word);
|
|
};
|
|
|
|
#endif // ALEEFORTH_PARSER_HPP
|
|
|