helpers

Documentation

Index

• func PositionToUTF16(source string, point sitter.Point) (protocol.Position, error)
• func RangesIntersect(a, b protocol.Range) bool

Functions

func PositionToUTF16

func PositionToUTF16(source string, point sitter.Point) (protocol.Position, error)

PositionToUTF16 converts a tree-sitter Point (which uses byte offsets for Column) to LSP Position (which uses UTF-16 code units for Character).

Returns an error if the position exceeds uint32 limits (LSP protocol limitation). This should never happen with normal text files, but guards against parser corruption.

func RangesIntersect

func RangesIntersect(a, b protocol.Range) bool

RangesIntersect checks if two LSP ranges intersect. Ranges are treated as half-open intervals [start, end) where the end position is exclusive.

Returns true if the ranges overlap, false otherwise.

Examples:

• [0:0, 0:5) and [0:3, 0:7) -> true (overlap from 0:3 to 0:5)
• [0:0, 0:5) and [0:5, 0:10) -> false (adjacent but not overlapping)
• [0:0, 1:0) and [0:5, 0:10) -> true (first range includes line 0:5)