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#ifndef BLOCK_H
#define BLOCK_H
#include <stddef.h>
#include "util/list.h"
#include "util/macros.h"
enum {
BLOCK_ALLOC_MULTIPLE = 64
};
// Blocks always contain whole lines.
// There's one zero-sized block for an empty file.
// Otherwise zero-sized blocks are forbidden.
typedef struct {
ListHead node;
unsigned char NONSTRING *data;
size_t size;
size_t alloc;
size_t nl;
} Block;
#define block_for_each(block_, list_head_) \
for ( \
block_ = BLOCK((list_head_)->next); \
&block_->node != (list_head_); \
block_ = BLOCK(block_->node.next) \
)
static inline Block *BLOCK(ListHead *item)
{
static_assert(offsetof(Block, node) == 0);
return (Block*)item;
}
Block *block_new(size_t alloc) RETURNS_NONNULL;
void block_free(Block *blk) NONNULL_ARGS;
#endif
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