From 7eeb515c5dc57658ac98554f44780a1f9a6fd2a4 Mon Sep 17 00:00:00 2001 From: Clyne Sullivan Date: Fri, 10 Mar 2023 09:14:09 -0500 Subject: Word::iterator --- libalee/types.hpp | 30 ++++++++++++++++++++++++++---- 1 file changed, 26 insertions(+), 4 deletions(-) (limited to 'libalee/types.hpp') diff --git a/libalee/types.hpp b/libalee/types.hpp index 530ff4f..5b577f2 100644 --- a/libalee/types.hpp +++ b/libalee/types.hpp @@ -20,7 +20,9 @@ #define ALEEFORTH_TYPES_HPP #include +#include +struct Dictionary; struct State; using Addr = uint16_t; @@ -32,12 +34,32 @@ constexpr unsigned int MaxCellNumberChars = 6; // -32768 struct Word { + struct iterator; + Addr start = 0; - Addr end = 0; + Addr wend = 0; + + iterator begin(const Dictionary *); + iterator end(const Dictionary *); + unsigned size() const noexcept; + + struct iterator { + using iterator_category = std::input_iterator_tag; + using value_type = uint8_t; + using pointer = void; + using reference = void; + using difference_type = Cell; + + Addr addr; + const Dictionary *dict; + + constexpr iterator(Addr a, const Dictionary *d): + addr(a), dict(d) {} - unsigned size() const noexcept { - return end - start; - } + iterator& operator++(); + value_type operator*(); + bool operator!=(const iterator&); + }; }; #endif // ALEEFORTH_TYPES_HPP -- cgit v1.2.3