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use cstree::{TextRange, TextSize};
use lsp_types::{Position, Range};
use crate::{LineColUtf16, LineIndex};
pub trait LineIndexExt {
fn offset_lsp(&self, line_col: Position) -> TextSize;
fn offset_lsp_range(&self, line_col: Range) -> TextRange;
fn line_col_lsp(&self, offset: TextSize) -> Position;
fn line_col_lsp_range(&self, offset: TextRange) -> Range;
}
impl LineIndexExt for LineIndex {
fn offset_lsp(&self, line_col: Position) -> TextSize {
let line_col = LineColUtf16 {
line: line_col.line,
col: line_col.character,
};
self.offset(self.to_utf8(line_col))
}
fn offset_lsp_range(&self, line_col: Range) -> TextRange {
let start = self.offset_lsp(line_col.start);
let end = self.offset_lsp(line_col.end);
TextRange::new(start, end)
}
fn line_col_lsp(&self, offset: TextSize) -> Position {
let position = self.line_col(offset);
let LineColUtf16 { line, col } = self.to_utf16(position);
Position::new(line, col)
}
fn line_col_lsp_range(&self, offset: TextRange) -> Range {
let start = self.line_col_lsp(offset.start());
let end = self.line_col_lsp(offset.end());
Range::new(start, end)
}
}
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