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63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
/**
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* Alee Forth: A portable and concise Forth implementation in modern C++.
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* Copyright (C) 2023 Clyne Sullivan <clyne@bitgloo.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser 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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* This program 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef ALEEFORTH_PARSER_HPP
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#define ALEEFORTH_PARSER_HPP
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#include "config.hpp"
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#include "types.hpp"
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#include "state.hpp"
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#include <string_view>
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class Parser
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{
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public:
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static Error (*customParse)(State&, Word);
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/**
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* Parses (and evaluates) the given string using the given state.
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* The string is stored in the state's input buffer, then parseSource()
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* works through that using parseWord(). parseWord() will compile or
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* execute as necessary.
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*/
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static Error parse(State&, const char *);
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/**
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* Parses (and evaluates) through the words stored in the state's input
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* buffer.
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*/
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static Error parseSource(State&);
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static void processLiteral(State&, Cell);
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private:
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/**
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* Parses the given word using the given state.
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*/
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static Error parseWord(State&, Word);
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/**
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* Attempts to parse the given word into a number.
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*/
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static Error parseNumber(State&, Word);
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};
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#endif // ALEEFORTH_PARSER_HPP
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