Change short-string approach to use 32 instead of 40 bytes
This commit is contained in:
jun
parent
c860a6ccfe
commit
9ddea4bb07
@ -6,6 +6,9 @@
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#include <inttypes.h>
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#include <stddef.h>
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#define GUF_PLATFORM_LITTLE_ENDIAN
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// #define GUF_PLATFORM_BIG_ENDIAN
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#if SIZE_MAX == UINT64_MAX
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#define GUF_PLATFORM_BITS 64
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#elif SIZE_MAX == UINT32_MAX
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372
src/guf_str.h
372
src/guf_str.h
@ -12,104 +12,120 @@
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#include "guf_utf8.h"
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#include "guf_hash.h"
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typedef enum guf_str_state {
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GUF_STR_STATE_INIT = 0,
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GUF_STR_STATE_SHORT = 1,
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GUF_STR_STATE_VIEW = 2,
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GUF_STR_STATE_ALLOC_ERR = 4
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} guf_str_state;
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// cf. libc++ short-string optimisation: https://joellaity.com/2020/01/31/string.html (last-retrieved 2025-03-10)
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typedef struct guf_str_internal_long_ {
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size_t capacity; // If long string: capacity's least significant bit always set to 1 (or its most significant bit for big-endian platforms)
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size_t size;
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char *c_str;
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} guf_str_internal_long_;
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#define GUF_STR_SSO_BUF_CAP (sizeof(guf_str_internal_long_) - sizeof(unsigned char)) /* 23 bytes on 64-bit platforms, 11 bytes on 32-bit platforms */
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#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) || (defined(__cplusplus) && __cplusplus >= 201103L)
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static_assert(GUF_STR_SSO_BUF_CAP > 0, "GUF_STR_SSO_BUF_CAP < 0 (this is very weird)"); // Basically cannot fail.
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static_assert(GUF_STR_SSO_BUF_CAP < 0x80, "GUF_STR_SSO_BUF_CAP >= 128 (no support for platforms with wordsize >= 512-bits)"); // Could fail on hypothetical platforms with 512-bit wordsize (and above).
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#endif
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typedef struct guf_str_internal_short_ {
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unsigned char size; // size overlaps with the first byte of guf_str_internal_long_.capacity [1]
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char c_str[GUF_STR_SSO_BUF_CAP];
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} guf_str_internal_short_;
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/*
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[1] The first byte of guf_str_internal_long_.capacity is its least-significant-byte on little-endian
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platforms, and its most-significant byte on big-endian platforms.
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*/
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typedef struct guf_str {
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union {
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struct heap {
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char *c_str;
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size_t len, capacity; // len and capacity do not include the null-terminator.
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} heap;
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struct stack { // Short-string optimisation.
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#define GUF_STR_SSO_BUFSIZE (sizeof(struct heap) - sizeof(unsigned char))
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#define GUF_STR_SSO_BUFCAP (GUF_STR_SSO_BUFSIZE - 1)
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char c_str[GUF_STR_SSO_BUFSIZE];
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unsigned char len;
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} stack;
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} data;
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guf_allocator *allocator;
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guf_str_state state;
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} guf_str;
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guf_str_internal_long_ lng;
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guf_str_internal_short_ shrt;
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} data; // 24 bytes on 64-bit platforms, 12 bytes on 32-bit platforms.
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guf_allocator *allocator; // Wasteful (8 bytes on 64-bit platforms...), but keeping this pointer also allows us to have "read-only strings" (a string is read-only if allocator == NULL)
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} guf_str; // Total: 32 bytes on 64-bit platforms, 16 bytes on 32-bit platforms.
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#define GUF_CSTR_TO_VIEW(CSTR) ((guf_str_view){.str = (CSTR), .len = strlen((CSTR))})
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#define GUF_STR_TO_VIEW(GUF_STR_PTR) ((guf_str_view){.str = guf_str_const_cstr((GUF_STR_PTR)), .len = guf_str_len((GUF_STR_PTR))})
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#define GUF_CSTR_TO_READONLY_STR(CSTR) ((guf_str){.state = GUF_STR_STATE_VIEW, .allocator = NULL, .data.heap.c_str = CSTR, .data.heap.len = strlen(CSTR), .data.heap.capacity = 0})
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#define GUF_CSTR_TO_VIEW(CSTR) ((guf_str_view){.str = (CSTR), .len = (ptrdiff_t)strlen((CSTR))})
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#define GUF_STR_TO_VIEW(GUF_STR_PTR) ((guf_str_view){.str = guf_str_const_cstr((GUF_STR_PTR)), .len = (ptrdiff_t)guf_str_len((GUF_STR_PTR))})
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#define GUF_CSTR_TO_READONLY_STR(CSTR) ((guf_str){.allocator = NULL, .data.lng.c_str = (CSTR), .data.lng.size = strlen(CSTR) + 1, .data.lng.capacity = 0})
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#ifdef __cplusplus
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// Standard C++ does not have compound literals like C99...
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#define GUF_CSTR_TO_VIEW_CPP(CSTR) guf_str_view{.str = (CSTR), .len = (ptrdiff_t)strlen(CSTR)}
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#endif
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// Creation:
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GUF_STR_KWRDS guf_str *guf_str_init(guf_str *str, guf_str_view str_view);
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GUF_STR_KWRDS guf_str *guf_str_init_from_cstr(guf_str *str, const char* c_str);
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GUF_STR_KWRDS guf_str *guf_str_init_empty_with_capacity(guf_str *str, size_t capacity);
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// guf_str_new functions return GUF_DICT_UNINITIALISED or GUF_STR_UNINITIALISED_FAILED_ALLOC on failure (can be checked with guf_str_alloc_success)
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GUF_STR_KWRDS guf_str guf_str_new(guf_str_view str_view);
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GUF_STR_KWRDS guf_str guf_str_new_substr(guf_str_view str_view, ptrdiff_t pos, ptrdiff_t len);
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GUF_STR_KWRDS guf_str guf_str_new_from_cstr(const char *c_str);
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GUF_STR_KWRDS guf_str guf_str_new_empty_with_capacity(size_t capacity);
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// Destruction:
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GUF_STR_KWRDS void guf_str_free(guf_str *str);
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// Modification:
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GUF_STR_KWRDS guf_str *guf_str_append(guf_str *str, guf_str_view to_append);
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GUF_STR_KWRDS guf_str *guf_str_append_cstr(guf_str *str, const char *cstr_to_append); // Not necessary
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GUF_STR_KWRDS guf_str *guf_str_substr(guf_str* str, size_t pos, size_t count);
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GUF_STR_KWRDS guf_str *guf_str_reserve(guf_str *str, size_t bufsize);
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GUF_STR_KWRDS guf_str *guf_str_shrink_capacity(guf_str *str, size_t shrink_trigger_fac, bool shrink_exact);
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GUF_STR_KWRDS char guf_str_pop_back(guf_str *str);
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GUF_STR_KWRDS char guf_str_pop_front(guf_str *str);
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// Copying and viewing:
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GUF_STR_KWRDS guf_str guf_str_substr_cpy(guf_str_view str, size_t pos, size_t count); // not necessary
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// guf_str_view:
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GUF_STR_KWRDS bool guf_str_view_is_valid(guf_str_view sv);
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GUF_STR_KWRDS guf_str guf_str_substr_cpy(guf_str_view str, ptrdiff_t pos, size_t count); // not necessary
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GUF_STR_KWRDS guf_str_view guf_substr_view(guf_str_view str, ptrdiff_t pos, ptrdiff_t count);
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GUF_STR_KWRDS guf_str_view guf_str_view_trim_left(guf_str_view str);
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GUF_STR_KWRDS guf_str_view guf_str_view_trim_right(guf_str_view str);
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// Tokenising/Iterating.
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GUF_STR_KWRDS guf_str_view guf_str_next_tok(guf_str_view *input, const guf_str_view *delims, ptrdiff_t num_delims, const guf_str_view *preserved_delims, ptrdiff_t num_preserved_delims);
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// Indexing:
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GUF_STR_KWRDS char *guf_str_at(guf_str *str, size_t idx);
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GUF_STR_KWRDS char *guf_str_back(guf_str *str);
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GUF_STR_KWRDS char *guf_str_front(guf_str *str);
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GUF_STR_KWRDS const char *guf_str_const_cstr(const guf_str *str);
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// Metadata retrieval:
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GUF_STR_KWRDS size_t guf_str_len(const guf_str *str); // The size (in chars) without the final zero-terminator (size - 1).
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GUF_STR_KWRDS size_t guf_str_capacity(const guf_str *str);
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GUF_STR_KWRDS bool guf_str_is_stack_allocated(const guf_str *str);
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GUF_STR_KWRDS bool guf_str_is_valid(const guf_str *str);
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GUF_STR_KWRDS bool guf_str_alloc_success(const guf_str *str);
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GUF_STR_KWRDS guf_hash_size_t guf_str_view_hash(const guf_str_view *sv);
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GUF_STR_KWRDS uint64_t guf_str_view_hash64(const guf_str_view *sv);
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GUF_STR_KWRDS uint32_t guf_str_view_hash32(const guf_str_view *sv);
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// Comparison:
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GUF_STR_KWRDS bool guf_str_view_equal(const guf_str_view* a, const guf_str_view* b);
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GUF_STR_KWRDS bool guf_str_view_equal_val_arg(guf_str_view a_val, guf_str_view b_val);
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GUF_STR_KWRDS int guf_str_view_cmp(const void *str_view_a, const void *str_view_b); // For qsort etc.
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GUF_STR_KWRDS guf_str_view guf_str_next_tok(guf_str_view *input, const guf_str_view *delims, ptrdiff_t num_delims, const guf_str_view *preserved_delims, ptrdiff_t num_preserved_delims);
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// guf_str:
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GUF_STR_KWRDS guf_str *guf_str_try_init(guf_str *str, guf_str_view str_view, guf_allocator *alloc, guf_err *err);
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GUF_STR_KWRDS guf_str *guf_str_init(guf_str *str, guf_str_view str_view, guf_allocator *alloc);
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GUF_STR_KWRDS guf_str *guf_str_try_init_from_cstr(guf_str *str, const char* c_str, guf_allocator *alloc, guf_err *err);
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GUF_STR_KWRDS guf_str *guf_str_init_from_cstr(guf_str *str, const char* c_str, guf_allocator *alloc);
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GUF_STR_KWRDS guf_str *guf_str_init_empty(guf_str *str, guf_allocator *alloc);
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GUF_STR_KWRDS guf_str guf_str_try_new(guf_str_view str_view, guf_allocator *alloc, guf_err *err);
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GUF_STR_KWRDS guf_str guf_str_new(guf_str_view str_view, guf_allocator *alloc);
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GUF_STR_KWRDS guf_str guf_str_try_new_from_cstr(const char *c_str, guf_allocator *alloc, guf_err *err);
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GUF_STR_KWRDS guf_str guf_str_new_from_cstr(const char *c_str, guf_allocator *alloc);
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GUF_STR_KWRDS guf_str guf_str_new_empty(guf_allocator *alloc);
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GUF_STR_KWRDS guf_str guf_str_try_new_substr(guf_str_view str_view, ptrdiff_t pos, ptrdiff_t len, guf_allocator *alloc, guf_err *err);
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GUF_STR_KWRDS guf_str guf_str_new_substr(guf_str_view str_view, ptrdiff_t pos, ptrdiff_t len, guf_allocator *alloc);
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GUF_STR_KWRDS bool guf_str_equal(const guf_str *a, const guf_str *b);
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GUF_STR_KWRDS bool guf_str_equals_cstr(const guf_str *a, const char *c_str);
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GUF_STR_KWRDS bool guf_str_equals_strview(const guf_str *a, guf_str_view b);
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GUF_STR_KWRDS void guf_str_free(guf_str *str, void *ctx);
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GUF_STR_KWRDS guf_str *guf_str_append(guf_str *str, guf_str_view to_append);
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GUF_STR_KWRDS guf_str *guf_str_append_cstr(guf_str *str, const char *cstr_to_append); // Not necessary
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GUF_STR_KWRDS guf_str *guf_str_substr(guf_str* str, size_t pos, size_t count);
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GUF_STR_KWRDS guf_str *guf_str_try_reserve(guf_str *str, ptrdiff_t min_capacity, guf_err *err);
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GUF_STR_KWRDS guf_str *guf_str_reserve(guf_str *str, ptrdiff_t min_capacity);
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GUF_STR_KWRDS guf_str *guf_str_try_shrink_to_fit(guf_str *str, guf_err *err);
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GUF_STR_KWRDS guf_str *guf_str_shrink_to_fit(guf_str *str);
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GUF_STR_KWRDS char guf_str_pop_back(guf_str *str);
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GUF_STR_KWRDS char guf_str_pop_front(guf_str *str);
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GUF_STR_KWRDS char *guf_str_at(guf_str *str, size_t idx);
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GUF_STR_KWRDS char *guf_str_back(guf_str *str);
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GUF_STR_KWRDS char *guf_str_front(guf_str *str);
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GUF_STR_KWRDS const char *guf_str_const_cstr(const guf_str *str);
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GUF_STR_KWRDS size_t guf_str_len(const guf_str *str); // The length (in chars) without the final zero-terminator.
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GUF_STR_KWRDS size_t guf_str_capacity(const guf_str *str); // The capacity (in chars) without the final zero-terminator.
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GUF_STR_KWRDS bool guf_str_is_short(const guf_str *str);
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GUF_STR_KWRDS bool guf_str_is_readonly(const guf_str *str);
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#endif
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// #define GUF_STR_IMPL_STATIC /*debug*/
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#if defined(GUF_STR_IMPL) || defined(GUF_STR_IMPL_STATIC)
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#ifdef __cplusplus
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#error "Must compile guf_str as C99 (or above) because type-punning with unions is undefined behaviour in C++"
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#endif
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#include "guf_common.h"
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#include <string.h>
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#ifdef GUF_STR_IMPL
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@ -121,6 +137,224 @@ GUF_STR_KWRDS bool guf_str_equals_strview(const guf_str *a, guf_str_view b);
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// TODO: find_first_of
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// guf_str:
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#if defined(GUF_PLATFORM_LITTLE_ENDIAN)
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#define GUF_STR_IS_LONG_MASK ((unsigned char)1) /* binary 0000.0001 */
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#define GUF_STR_GET_CAP_MASK (~(size_t)1) /* binary 1111.1111 (1111.1111)* 1111.1110 */
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static inline void guf_str_set_lng_cap_(guf_str *str, size_t capacity)
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{
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GUF_ASSERT(capacity % 2 == 0);
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GUF_ASSERT(capacity > GUF_STR_SSO_BUF_CAP);
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str->data.lng.capacity = capacity | ((size_t)1);
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}
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static inline void guf_str_set_shrt_size_(guf_str *str, unsigned char size)
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{
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GUF_ASSERT(size < GUF_STR_SSO_BUF_CAP && size < 0x80);
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str->data.shrt.size = (unsigned char)(size << 1u);
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}
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#elif defined(GUF_PLATFORM_BIG_ENDIAN)
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#define GUF_STR_IS_LONG_MASK ((unsigned char)0x80) /* binary 1000 0000 */
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#define GUF_STR_GET_CAP_MASK ((size_t)SIZE_T_MAX >> 1u) /* binary 0111.1111 (1111.1111)* 1111.1111 */
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static inline void guf_str_set_lng_cap_(guf_str *str, size_t capacity)
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{
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GUF_ASSERT(capacity % 2 == 0);
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GUF_ASSERT(capacity > GUF_STR_SSO_BUF_CAP);
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str->data.lng.capacity = ~GUF_STR_GET_CAP_MASK | (capacity >> 1);
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}
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static inline void guf_str_set_shrt_size_(guf_str *str, unsigned char size)
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{
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GUF_ASSERT(size < GUF_STR_SSO_BUF_CAP && size < 0x80);
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str->data.shrt.size = size;
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}
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#else
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#error "guf_str: neither GUF_PLATFORM_LITTLE_ENDIAN nor GUF_PLATFORM_BIG_ENDIAN is defined"
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#endif
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static bool guf_str_is_valid(const guf_str *str)
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{
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GUF_ASSERT(str);
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const bool is_readonly = !str->allocator;
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if (is_readonly) {
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bool valid_readonly = str->data.lng.c_str && str->data.lng.capacity == 0 && str->data.lng.size > 0;
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return valid_readonly;
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}
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const bool valid_allocator = str->allocator && str->allocator->alloc && str->allocator->free && str->allocator->realloc;
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if (!valid_allocator) {
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return false;
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}
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const unsigned char first_byte = str->data.shrt.size; // union type-punning (only legal in C99 and above; undefined behaviour in C++ I think).
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const bool is_short = (first_byte & GUF_STR_IS_LONG_MASK) == 0;
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if (is_short) {
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const size_t size = (str->data.shrt.size >> 1);
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return size > 0 && size <= GUF_STR_SSO_BUF_CAP && str->data.shrt.c_str[size - 1] == '\0';
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} else {
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const size_t cap_with_null = str->data.lng.capacity & ~(size_t)1;
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return str->data.lng.c_str && cap_with_null > GUF_STR_SSO_BUF_CAP && str->data.lng.size > 0 && str->data.lng.size <= cap_with_null;
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}
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}
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GUF_STR_KWRDS bool guf_str_is_readonly(const guf_str *str)
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{
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GUF_ASSERT(guf_str_is_valid(str));
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return !str->allocator;
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}
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GUF_STR_KWRDS bool guf_str_is_short(const guf_str *str)
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{
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GUF_ASSERT(guf_str_is_valid(str));
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if (guf_str_is_readonly(str)) {
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return false;
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}
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const unsigned char first_byte = str->data.shrt.size; // union type-punning (only legal in C99 and above; undefined behaviour in C++ I think).
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return (first_byte & GUF_STR_IS_LONG_MASK) == 0;
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}
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GUF_STR_KWRDS size_t guf_str_capacity(const guf_str *str)
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{
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GUF_ASSERT(guf_str_is_valid(str));
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if (guf_str_is_short(str)) {
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return GUF_STR_SSO_BUF_CAP - 1;
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} else if (guf_str_is_readonly(str)) {
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return 0;
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} else {
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// Precondition: all capacities for data.lng must be even.
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#if defined(GUF_PLATFORM_LITTLE_ENDIAN)
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GUF_ASSERT(str->data.lng.capacity & ~GUF_STR_GET_CAP_MASK); // Assert the is_long bit is actually set.
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const size_t cap_with_null = str->data.lng.capacity & GUF_STR_GET_CAP_MASK;
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#elif defined(GUF_PLATFORM_BIG_ENDIAN)
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GUF_ASSERT(str->data.lng.capacity & ~GUF_STR_GET_CAP_MASK); // Assert the is_long bit is actually set.
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const size_t cap_with_null = (str->data.lng.capacity & GUF_STR_GET_CAP_MASK) << 1;
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#endif
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GUF_ASSERT(cap_with_null > 0 && cap_with_null > GUF_STR_SSO_BUF_CAP);
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return cap_with_null - 1;
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}
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}
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||||
|
||||
GUF_STR_KWRDS size_t guf_str_len(const guf_str *str)
|
||||
{
|
||||
GUF_ASSERT(guf_str_is_valid(str));
|
||||
if (guf_str_is_short(str)) {
|
||||
GUF_ASSERT(str->data.shrt.size > 0);
|
||||
#if defined(GUF_PLATFORM_LITTLE_ENDIAN)
|
||||
const size_t size = (str->data.shrt.size >> 1);
|
||||
#elif defined(GUF_PLATFORM_BIG_ENDIAN)
|
||||
const size_t size = (str->data.shrt.size);
|
||||
#endif
|
||||
GUF_ASSERT(size > 0 && size <= GUF_STR_SSO_BUF_CAP);
|
||||
return size - 1;
|
||||
} else {
|
||||
const size_t size = str->data.lng.size;
|
||||
GUF_ASSERT(size > 0);
|
||||
return size - 1;
|
||||
}
|
||||
}
|
||||
|
||||
// GUF_STR_KWRDS guf_str *guf_str_try_reserve(guf_str *str, ptrdiff_t new_cap, guf_err *err)
|
||||
// {
|
||||
// GUF_ASSERT_RELEASE(guf_str_is_valid_writable(str));
|
||||
|
||||
// const ptrdiff_t size = guf_str_len(str) + 1;
|
||||
// const ptrdiff_t old_cap = guf_str_capacity(str);
|
||||
|
||||
// if (new_cap <= old_cap) { // Growth not necessary.
|
||||
// guf_err_set_if_not_null(err, GUF_ERR_NONE);
|
||||
// return str;
|
||||
// }
|
||||
|
||||
// if (guf_str_is_short(str)) { // a.) Was short string -> need initial allocation.
|
||||
// GUF_ASSERT(size == GUF_STR_SSO_BUFCAP);
|
||||
// char *c_str_new = str->allocator->alloc(new_cap, str->allocator->ctx);
|
||||
// if (!c_str_new) {
|
||||
// guf_err_set_or_panic(err, GUF_ERR_ALLOC_FAIL, "in guf_str_try_grow_if_necessary: Initial allocation failed.");
|
||||
// return NULL;
|
||||
// }
|
||||
// memcpy(c_str_new, str->data.stack.c_str, str->data.stack.size);
|
||||
// str->state = GUF_STR_STATE_INIT;
|
||||
// str->data.heap.c_str = c_str_new;
|
||||
// str->data.heap.size = size;
|
||||
// str->data.heap.capacity = new_cap;
|
||||
// guf_err_set_if_not_null(err, GUF_ERR_NONE);
|
||||
// return str;
|
||||
// }
|
||||
// // b.) Was already allocated -> need to grow existing allocation.
|
||||
// char *c_str_new = str->allocator->realloc(str->data.heap.c_str, old_cap, new_cap, str->allocator->ctx);
|
||||
// if (!c_str_new) {
|
||||
// guf_err_set_or_panic(err, GUF_ERR_ALLOC_FAIL, "in guf_str_try_grow_if_necessary: re-allocation failed.");
|
||||
// return NULL;
|
||||
// }
|
||||
// str->data.heap.c_str = c_str_new;
|
||||
// str->data.heap.capacity = new_cap;
|
||||
// guf_err_set_if_not_null(err, GUF_ERR_NONE);
|
||||
// return str;
|
||||
// }
|
||||
|
||||
|
||||
// GUF_STR_KWRDS guf_str *guf_str_try_init(guf_str *str, guf_str_view str_view, guf_allocator *alloc, guf_err *err)
|
||||
// {
|
||||
// if (!str) {
|
||||
// guf_err_set_or_panic(err, GUF_ERR_NULL_PTR, "in guf_str_try_init: str is NULL");
|
||||
// return NULL;
|
||||
// } else if (!alloc || !alloc->alloc || !alloc->realloc || !alloc->free) {
|
||||
// guf_err_set_or_panic(err, GUF_ERR_NULL_PTR, "in guf_str_try_init: alloc (or allocs function pointers) is/are NULL");
|
||||
// return NULL;
|
||||
// }
|
||||
|
||||
// if (!guf_str_view_is_valid(str_view)) {
|
||||
// guf_err_set_or_panic(err, GUF_ERR_NULL_PTR, "in guf_str_try_init: invalid str_view");
|
||||
// return NULL;
|
||||
// }
|
||||
|
||||
// str->allocator = alloc;
|
||||
// str->state = GUF_STR_STATE_SHORT;
|
||||
// str->data.stack.size = 1;
|
||||
// str->data.stack.c_str[0] = '\0';
|
||||
|
||||
// if (str_view.len == PTRDIFF_MAX) {
|
||||
// guf_err_set_or_panic(err, GUF_ERR_NULL_PTR, "in guf_str_try_init: str_view.len + 1 would overflow ptrdiff_t");
|
||||
// return NULL;
|
||||
// }
|
||||
// const ptrdiff_t size = str_view.len + 1;
|
||||
// GUF_ASSERT(size > 0);
|
||||
|
||||
// if (size <= GUF_STR_SSO_BUFCAP) { // a) Fits in short-string.
|
||||
// str->state = GUF_STR_STATE_SHORT;
|
||||
// GUF_ASSERT(size <= UCHAR_MAX);
|
||||
// str->data.stack.size = (unsigned char)size;
|
||||
// memcpy(str->data.stack.c_str, str_view.str, str_view.len);
|
||||
// str->data.stack.c_str[str_view.len] = '\0';
|
||||
// guf_err_set_if_not_null(err, GUF_ERR_NONE);
|
||||
// return str;
|
||||
// }
|
||||
// // b) Needs initial allocation.
|
||||
// guf_str_try_reserve(str, size, err);
|
||||
// if (err && *err != GUF_ERR_NONE) {
|
||||
// guf_panic(*err, "in guf_str_try_init: Initial allocation failed");
|
||||
// return NULL;
|
||||
// }
|
||||
// GUF_ASSERT(!guf_str_is_short(str));
|
||||
// memcpy(str->data.heap.c_str, str_view.str, str_view.len);
|
||||
// str->data.heap.c_str[str_view.len] = '\0';
|
||||
// guf_err_set_if_not_null(err, GUF_ERR_NONE);
|
||||
// return str;
|
||||
// }
|
||||
|
||||
|
||||
|
||||
// guf_str_view:
|
||||
|
||||
GUF_STR_KWRDS bool guf_str_view_is_valid(guf_str_view sv)
|
||||
{
|
||||
if (sv.str) {
|
||||
return sv.len >= 0;
|
||||
} else {
|
||||
return sv.len == 0;
|
||||
}
|
||||
}
|
||||
|
||||
GUF_STR_KWRDS guf_str_view guf_str_next_tok(guf_str_view *input, const guf_str_view *delims, ptrdiff_t num_delims, const guf_str_view *preserved_delims, ptrdiff_t num_preserved_delims)
|
||||
{
|
||||
if (input->len <= 0 || input->str == NULL) {
|
||||
@ -233,7 +467,6 @@ GUF_STR_KWRDS guf_str_view guf_str_view_trim_right(guf_str_view sv)
|
||||
return sv;
|
||||
}
|
||||
|
||||
|
||||
GUF_STR_KWRDS guf_str_view guf_substr_view(guf_str_view str, ptrdiff_t pos, ptrdiff_t count)
|
||||
{
|
||||
GUF_ASSERT(str.str);
|
||||
@ -278,7 +511,6 @@ GUF_STR_KWRDS uint32_t guf_str_view_hash32(const guf_str_view *sv)
|
||||
return guf_hash32(sv->str, sv->len, GUF_HASH32_INIT);
|
||||
}
|
||||
|
||||
// Comparison:
|
||||
GUF_STR_KWRDS bool guf_str_view_equal(const guf_str_view* a, const guf_str_view* b)
|
||||
{
|
||||
GUF_ASSERT(a && b);
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user