tree-sitter: update vendored tree-sitter runtime

tree-sitter/tree-sitter commit edb569310005c66838b7d69fa60850acac6abeee

Included files are:
lib/include/tree-sitter/*.h
lib/src/*.[ch]
lib/src/unicode/*
LICENSE

1 files changed, 50 insertions, 0 deletions

diff --git a/src/tree_sitter/unicode.h b/src/tree_sitter/unicode.h
new file mode 100644
index 0000000000..0fba56a612
--- /dev/null
+++ b/src/tree_sitter/unicode.h
@@ -0,0 +1,50 @@
+#ifndef TREE_SITTER_UNICODE_H_
+#define TREE_SITTER_UNICODE_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <limits.h>
+#include <stdint.h>
+
+#define U_EXPORT
+#define U_EXPORT2
+#include "unicode/utf8.h"
+#include "unicode/utf16.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_utf8(
+  const uint8_t *string,
+  uint32_t length,
+  int32_t *code_point
+) {
+  uint32_t i = 0;
+  U8_NEXT(string, i, length, *code_point);
+  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);
+  return i * 2;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // TREE_SITTER_UNICODE_H_