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/**
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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_CTYPE_HPP
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#define ALEEFORTH_CTYPE_HPP
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/**
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* We implement our own character comparison functions to keep them lean.
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*/
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#include <cstdint>
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constexpr inline unsigned strlen(const char * const s) {
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unsigned i = 0;
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while (s[i]) i++;
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return i;
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}
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constexpr inline bool isspace(uint8_t c) {
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return c == ' ' || c == '\t' || c == '\r' || c == '\n';
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}
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constexpr inline bool isdigit(uint8_t c) {
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return c >= '0' && c <= '9';
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}
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constexpr inline bool isupper(uint8_t c) {
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return c >= 'A' && c <= 'Z';
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}
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constexpr inline bool isalpha(uint8_t c) {
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return isupper(c) || (c >= 'a' && c <= 'z');
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}
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#endif // ALEEFORTH_CTYPE_HPP
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