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Bluemangoo
2025-03-28 08:07:24 +08:00
parent ffc6eea779
commit ebab65979f
4 changed files with 145 additions and 66 deletions
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.vscode/c.template.code-snippets
Vendored
+70 -30
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@@ -3,48 +3,88 @@
"prefix": "define_template",
"body": [
"#define _template_func_def(T, func) T_DEFINE_##func(T)",
"#define _template_func(T, func) T_##func##__##T"
"#define _template_func(T, func) T_##func(T)",
"#define _template_func_call(T, func, ...) \\",
" _template_func(T, func)(sizeof(T), __VA_ARGS__)",
"#define $fd _template_func_def",
"#define $f _template_func",
"#define $fc _template_func_call"
],
"description": "Define template"
},
"Define sort": {
"prefix": "define_sort",
"body": [
"#define SORT_PREDICATE(type, name) bool name(type a, type b)",
"#define SORT_SWAP(type, a, b) \\",
"#include <stdio.h>",
"#include <stdlib.h>",
"#include <string.h>",
"#define SORT_PREDICATE(type, name) \\",
" bool name(const size_t size, type *a, type *b)",
"#define SORT_SWAP(size, a, b) \\",
" { \\",
" const type _BLOCK_T = a; \\",
" a = b; \\",
" b = _BLOCK_T; \\",
" void *INBLOCK_TMP = malloc(size); \\",
" memcpy(INBLOCK_TMP, a, size); \\",
" memcpy(a, b, size); \\",
" memcpy(b, INBLOCK_TMP, size); \\",
" }",
"",
"#define T_DEFINE_less(T) \\",
" SORT_PREDICATE(T, T_less__##T) { return a < b; }",
"#define T_DEFINE_greater(T) \\",
" SORT_PREDICATE(T, T_greater__##T) { return a > b; }",
"",
"#define T_DEFINE_sort(T) \\",
" void T_sort__##T(T *start, const T *end, bool (*predicate)(T, T)) { \\",
" T *i, *j; \\",
" for (i = start; i < end; i++) { \\",
" for (j = i; j < end; j++) { \\",
" if (predicate(*i, *j)) { \\",
" SORT_SWAP(T, *i, *j); \\",
" } \\",
" } \\",
" } \\",
"int memcmp_reverse(const void *ptr1, const void *ptr2, const size_t size) {",
" size_t i = size;",
" for (; i > 0; i--) {",
" const unsigned char byte1 = ((const unsigned char *)ptr1)[i - 1];",
" const unsigned char byte2 = ((const unsigned char *)ptr2)[i - 1];",
" if (byte1 != byte2) {",
" return byte1 - byte2;",
" }",
" }",
" return 0;",
"}",
"",
"#define T_DEFINE_sort_default(T) \\",
" void T_sort_default__##T(T *start, const T *end) { \\",
" T_sort__##T(start, end, _template_func(T, less)); \\",
"SORT_PREDICATE(const void, T_less__) {",
" const int cmp = memcmp_reverse(a, b, size);",
" const bool a_negative = (((const unsigned char *)a)[size - 1] & 0x80) != 0;",
" const bool b_negative = (((const unsigned char *)b)[size - 1] & 0x80) != 0;",
" if (a_negative && !b_negative)",
" return true;",
" if (!a_negative && b_negative)",
" return false;",
" return cmp < 0;",
"}",
"#define T_less(T) T_less__",
"SORT_PREDICATE(const void, T_greater__) {",
" const int cmp = memcmp_reverse(a, b, size);",
" const bool a_negative = (((const unsigned char *)a)[size - 1] & 0x80) != 0;",
" const bool b_negative = (((const unsigned char *)b)[size - 1] & 0x80) != 0;",
" if (a_negative && !b_negative)",
" return false;",
" if (!a_negative && b_negative)",
" return true;",
" return cmp > 0;",
"}",
"#define T_greater(T) T_greater__",
"SORT_PREDICATE(const void *, T_less_binary__) { return memcmp(a, b, size) < 0; }",
"#define T_less_binary(T) T_less_binary__",
"SORT_PREDICATE(const void *, T_greater_binary__) {",
" return memcmp(a, b, size) > 0;",
"}",
"#define T_greater_binary(T) T_greater_binary__",
"",
"void T_sort__(const size_t size, void *start, const void *end,",
" bool (*predicate)(size_t, const void *, const void *)) {",
" size_t i, j;",
" for (i = (size_t)start; i < (size_t)end; i += size) {",
" for (j = i + size; j < (size_t)end; j += size) {",
" if (predicate(size, (void *)i, (void *)j)) {",
" SORT_SWAP(size, (void *)i, (void *)j);",
" }",
" }",
" }",
"",
"#define T_DEFINE_sort_init(T) \\",
" _template_func_def(T, less); \\",
" _template_func_def(T, greater); \\",
" _template_func_def(T, sort); \\",
" _template_func_def(T, sort_default);"
"}",
"#define T_sort(T) T_sort__",
"void T_sort_default__(const size_t size, void *start, const void *end) {",
" T_sort__(size, start, end, T_less(T));",
"}",
"#define T_sort_default(T) T_sort_default__"
],
"description": "Define sort"
}