Struct OffsetTable 

pub struct OffsetTable { /* private fields */ }

Maps UTF-8 byte offsets in one source file to UTF-16 code-unit offsets.

Implementations

impl OffsetTable

pub fn build(src: &str) -> Self

Builds a lookup table for the byte boundaries in src.

pub fn byte_to_utf16(&self, byte_offset: usize) -> usize

Translate one UTF-8 byte offset (must land on a char boundary, which every tree-sitter node boundary does for valid UTF-8 source) to its UTF-16 code-unit offset from the start of the file.

pub fn translate_point( &self, byte_offset: usize, column_bytes: usize, ) -> (usize, usize)

Translate a tree-sitter point – byte_offset from the start of the file, column_bytes from the start of its row – into (utf16 offset from file start, utf16 column from row start). Rows themselves are never translated; §5.5 rows always agree.