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Fold LIBC_ALG into LIBC_MEM

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Justine Tunney 2022-08-13 08:32:34 -07:00
parent 7cf66bc161
commit 17aea99bb3
162 changed files with 265 additions and 430 deletions
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39
libc/mem/arraylist2.internal.h Normal file
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#ifndef COSMOPOLITAN_LIBC_ALG_ARRAYLIST2_H_
#define COSMOPOLITAN_LIBC_ALG_ARRAYLIST2_H_
#include "libc/mem/mem.h"
#include "libc/str/str.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
/* TODO(jart): Fully develop these better macros. */
#define APPEND(LIST_P, LIST_I, LIST_N, ITEM) \
CONCAT(LIST_P, LIST_I, LIST_N, ITEM, 1)
#ifndef CONCAT
#define CONCAT(LIST_P, LIST_I, LIST_N, ITEM, COUNT) \
({ \
autotype(LIST_P) ListP = (LIST_P); \
autotype(LIST_I) ListI = (LIST_I); \
autotype(LIST_N) ListN = (LIST_N); \
typeof(&(*ListP)[0]) Item = (ITEM); \
size_t SizE = sizeof(*Item); \
size_t Count = (COUNT); \
ssize_t Entry = -1; \
/* NOTE: We use `<` to guarantee one additional slot */ \
/* grow() will memset(0) extended memory, thus */ \
/* you get a nul-terminator for free sometimes */ \
/* the exception is if you list.i=0 and re-use */ \
/* so you need concat(...); list.p[list.i++]=0 */ \
if (*ListI + Count < *ListN || __grow(ListP, ListN, SizE, Count)) { \
memcpy(&(*ListP)[*ListI], Item, (SizE) * (Count)); \
Entry = *ListI; \
*ListI += Count; /* happens after copy in case signal */ \
} \
Entry; \
})
#endif /* CONCAT */
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_ALG_ARRAYLIST2_H_ */