Laria Carolin Chabowski
0384875ef3
This is analogous to dictionaries and ensures that no circular references can be created when using the exported API in apfl.h. This also changes apfl_value_copy into apfl_value_incref to better reflect what it does and to reflect that it is no longer an operation that can fail.
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
#ifndef APFL_INTERNAL_H
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#define APFL_INTERNAL_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include "common.h"
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#define DEINIT_LIST(items, len, item_deinit) \
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do { \
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if ((items) == NULL) { \
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break; \
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} \
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for (size_t i = 0; i < (len); i++) { \
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item_deinit(&((items)[i])); \
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} \
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len = 0; \
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free(items); \
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(items) = NULL; \
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} while(0)
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#define MOVEPTR(out, in) \
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do { \
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out = in; \
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in = NULL; \
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} while(0)
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// ALLOC_LIST allocates memory for a list of n values of type T.
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// n == 0 will always result in NULL (not guaranteed by calloc()) and the
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// result will be cast into a pointer to T (this way the compiler can warn us,
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// if we try to allocate memory for a wrong type). Also if we always use
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// calloc(), the allocated memory is in a defined state.
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#define ALLOC_LIST(T, n) (T *)((n) == 0 ? NULL : calloc((n), sizeof(T)))
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#define ALLOC(T) ALLOC_LIST(T, 1)
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// Aliases to commonly used functions / macros
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#define DESTROY APFL_DESTROY
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// Internal use only functions
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void apfl_print_indented(unsigned indent, FILE *, const char* fmt, ...);
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/* Decrease a refererence count. Returns true, if the object should be freed.
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*/
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bool apfl_refcount_dec(unsigned *);
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#ifdef __cplusplus
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}
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#endif
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#endif
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