diff options
Diffstat (limited to 'utils.h')
| -rw-r--r-- | utils.h | 24 |
1 files changed, 20 insertions, 4 deletions
@@ -1,16 +1,14 @@ // // utils.h -// Copyright 2020 Bruce Hill +// Copyright 2021 Bruce Hill // Released under the MIT license with the Commons Clause // -// This file contains some definitions of some utility macros. +// This file contains some definitions of some utility macros and functions. // #ifndef FILE_UTILS__H #define FILE_UTILS__H -#include <err.h> -#include <stdio.h> #include <string.h> #ifndef streq @@ -55,6 +53,24 @@ ((node)->name).next = NULL; \ } while (0) +#define S1(x) #x +#define S2(x) S1(x) +#define __LOCATION__ __FILE__ ":" S2(__LINE__) + +// Error checking helper macros: +#define nonnegative(exp, ...) check_nonnegative(exp, __LOCATION__ ": `" #exp "` " __VA_ARGS__) +#define nonnull(exp, ...) check_nonnull(exp, __LOCATION__ ": `" #exp "` " __VA_ARGS__) +// Error-checking memory allocation helper macros: +#define new(t) check_nonnull(calloc(1, sizeof(t)), __LOCATION__ ": new(" #t ") failed") +#define new_bytes(n) check_nonnull(calloc(1, n), __LOCATION__ ": new_bytes(" #n ") failed") +#define grow(obj, new_count) check_nonnull(reallocarray(obj, (new_count), sizeof(obj[0])), __LOCATION__ ": grow(" #obj ", " #new_count ") failed") +#define check_strdup(s) check_nonnull(strdup(s), __LOCATION__ ": check_strdup(" #s ") failed") + +int check_nonnegative(int negative_err, const char *err_msg, ...); +__attribute__((returns_nonnull)) +void *check_nonnull(void *p, const char *err_msg, ...); +__attribute__((nonnull)) +void delete(void *p); #endif // vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1 |