#ifndef _BLUELIB_STRING_H_
#define _BLUELIB_STRING_H_

#include "object.h"

/* maximum length of string that can be stored inline, not including null-terminator */
#define STRING_INLINE_CAPACITY 15

struct b_string {
	struct b_object s_base;
	/* length of string in bytes, not including null-terminator.
	 * a multi-byte utf-8 codepoint will be counted as multiple bytes here */
	unsigned int s_len;
	/* length of string in codepoints, not including null-terminator.
	 * a multi-byte utf-8 codepoint will be counted as one codepoint here */
	unsigned int s_codepoints;
	/* maximum length of string storable in the currently-allocated buffer
	 * in bytes, not including null terminator */
	unsigned int s_max;
	union {
		char d_inline[STRING_INLINE_CAPACITY + 1];
		char *d_external;
	} s_data;
};

#endif