treesitter: remove utf8proc dependency

src/tree_sitter/utf16.c

@@ -1,33 +0,0 @@
-#include "./utf16.h"
-
-utf8proc_ssize_t utf16_iterate(
-  const utf8proc_uint8_t *string,
-  utf8proc_ssize_t length,
-  utf8proc_int32_t *code_point
-) {
-  if (length < 2) {
-    *code_point = -1;
-    return 0;
-  }
-
-  uint16_t *units = (uint16_t *)string;
-  uint16_t unit = units[0];
-
-  if (unit < 0xd800 || unit >= 0xe000) {
-    *code_point = unit;
-    return 2;
-  }
-
-  if (unit < 0xdc00) {
-    if (length >= 4) {
-      uint16_t next_unit = units[1];
-      if (next_unit >= 0xdc00 && next_unit < 0xe000) {
-        *code_point = 0x10000 + ((unit - 0xd800) << 10) + (next_unit - 0xdc00);
-        return 4;
-      }
-    }
-  }
-
-  *code_point = -1;
-  return 2;
-}

src/tree_sitter/utf16.h

@@ -1,21 +0,0 @@
-#ifndef TREE_SITTER_UTF16_H_
-#define TREE_SITTER_UTF16_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdint.h>
-#include <stdlib.h>
-#include "utf8proc.h"
-
-// Analogous to utf8proc's utf8proc_iterate function. Reads one code point from
-// the given UTF16 string and stores it in the location pointed to by `code_point`.
-// Returns the number of bytes in `string` that were read.
-utf8proc_ssize_t utf16_iterate(const utf8proc_uint8_t *, utf8proc_ssize_t, utf8proc_int32_t *);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif  // TREE_SITTER_UTF16_H_