From d55938b34d6b7ee2c2d7da8483aaed5c8b9078a0 Mon Sep 17 00:00:00 2001 From: Johnny Richard Date: Sun, 16 Apr 2023 01:10:35 +0200 Subject: util: Create string_view tool to optimize memory usage We are allocating heap memory to create tokens value, we can minimize the number of allocations if we start using string_view. We have other problems, right now the tokens value ownership are quite unclear once the AST nodes also share the memory allocation done by token_get_next_token function. It's important to clarify we also have memory leaks on the current implementation. Hence, we are going to start using string_view to make the memory management easier. :^) Signed-off-by: Johnny Richard --- src/string_view.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 src/string_view.c (limited to 'src/string_view.c') diff --git a/src/string_view.c b/src/string_view.c new file mode 100644 index 0000000..d511e63 --- /dev/null +++ b/src/string_view.c @@ -0,0 +1,49 @@ +/* +* Copyright (C) 2023 Johnny Richard +* +* This program is free software: you can redistribute it and/or modify +* it under the terms of the GNU 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 General Public License for more details. +* +* You should have received a copy of the GNU General Public License +* along with this program. If not, see . +*/ +#include "string_view.h" +#include +#include +#include + +string_view_t +string_view_new(const char *str, int size) +{ + assert(str); + + return (string_view_t) { + .size = size, + .str = str + }; +} + +string_view_t +string_view_from_str(const char *str) +{ + return string_view_new(str, strlen(str)); +} + +bool +string_view_to_str(string_view_t *sv, char *ret) +{ + return sprintf(ret, SVFMT, SVARG(sv)) < 0; +} + +bool +string_view_eq(string_view_t a, string_view_t b) +{ + return a.size == b.size && memcmp(a.str, b.str, a.size) == 0; +} -- cgit v1.2.3