core.h

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#ifndef CVX_CORE_H
#define CVX_CORE_H
 
#include <stdbool.h>
#include <stddef.h>
 
#include "flags.h"
 
#define CVX__(A, B) A##B
#define CVX_(A, B) CVX__(A, B)
 
#define VTABLE(X) CVX_(X, _vtable)
#define GLOBAL_VTABLE(SNAME, X, NAME) CVX_(CVX_(CVX_(cvx_vtables_, SNAME), X), NAME)
 
#define CVX_VTAB_COMP(name, T) int (*name)(T, T)
#define CVX_VTAB_COPY(name, T) T (*name)(T)
#define CVX_VTAB_DROP(name, T) void (*name)(T)
#define CVX_VTAB_HASH(name, T) size_t (*name)(T)
#define CVX_VTAB_PRIO(name, T) int (*name)(T, T)
 
#define CVX_VTAB_DEFINITION(T) \
    CVX_VTAB_COMP(comp, T); \
    CVX_VTAB_COPY(clone, T); \
    CVX_VTAB_DROP(drop, T); \
    CVX_VTAB_HASH(hash, T); \
    CVX_VTAB_PRIO(prio, T);
 
#ifndef CVX_ITER_TAG_MULT
// Iterator tag equals to the user-provided tag times this value
#define CVX_ITER_TAG_MULT 100
#endif
 
#ifndef CVX_BUFFER_GROWTH_RATE
#define CVX_BUFFER_GROWTH_RATE 1.5
#endif
#ifndef CVX_BUFFER_MIN_SIZE
#define CVX_BUFFER_MIN_SIZE 8
#endif
#if CVX_BUFFER_MIN_SIZE < 2
#error "CVX_BUFFER_MIN_SIZE must be greater than 1"
#endif
 
typedef struct cvx_container
{
    int tag;
    enum cvx_flags flag;
} cvx_container;
 
enum cvx_heap_order
{
    CVX_MAX_HEAP = 1,
    CVX_MIN_HEAP = -1
};
 
#define CVX_CONTAINER_GUARDS(TAG, _col_, error_value) \
    if (_col_->tag != TAG) \
    { \
        _col_->flag = CVX_FLAG_WRONG_TAG; \
        return error_value; \
    }
 
#endif /* CVX_CORE_H */