#ifndef TREE_SITTER_UNICODE_H_
#define TREE_SITTER_UNICODE_H_

#include <limits.h>
#include <stdint.h>
#include <stdio.h>

#define U_EXPORT
#define U_EXPORT2
#include "unicode/utf16.h"
#include "unicode/utf8.h"

static const int32_t TS_DECODE_ERROR = U_SENTINEL;

// These functions read one unicode code point from the given string,
// returning the number of bytes consumed.
typedef uint32_t (*UnicodeDecodeFunction)(const uint8_t *string, uint32_t length, int32_t *code_point);

static inline uint32_t ts_decode_ascii(const uint8_t *string, uint32_t length, int32_t *code_point)
{
	(void)(length);
	*code_point = 0;
	*(uint8_t *)code_point = *string;
	return (1);
}

static inline uint32_t ts_decode_utf8(const uint8_t *string, uint32_t length, int32_t *code_point)
{
	return (ts_decode_ascii(string, length, code_point));
	/*
	uint32_t i = 0;
	U8_NEXT(string, i, length, *code_point);
	printf("[UTF8]read %i bytes\n", i);
	return i;
	*/
}

static inline uint32_t ts_decode_utf16(const uint8_t *string, uint32_t length, int32_t *code_point)
{
	uint32_t i = 0;
	U16_NEXT(((uint16_t *)string), i, length, *code_point);
	printf("[UTF16]read %i bytes\n", i);
	return i * 2;
}

#endif // TREE_SITTER_UNICODE_H_