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path: root/support/texlab/crates/texlab/src/features/definition.rs
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use base_db::{FeatureParams, Workspace};
use definition::DefinitionParams;
use lsp_types::{GotoDefinitionResponse, LocationLink, Position, Url};

use crate::util::line_index_ext::LineIndexExt;

pub fn goto_definition(
    workspace: &Workspace,
    uri: &Url,
    position: Position,
) -> Option<GotoDefinitionResponse> {
    let document = workspace.lookup(uri)?;
    let offset = document.line_index.offset_lsp(position)?;
    let feature = FeatureParams::new(workspace, document);
    let params = DefinitionParams { feature, offset };

    let mut links = Vec::new();
    for result in definition::goto_definition(params) {
        if let Some(link) = convert_link(document, result) {
            links.push(link);
        }
    }

    Some(GotoDefinitionResponse::Link(links))
}

fn convert_link(
    document: &base_db::Document,
    result: definition::DefinitionResult<'_>,
) -> Option<LocationLink> {
    let origin_selection_range = Some(
        document
            .line_index
            .line_col_lsp_range(result.origin_selection_range)?,
    );

    let target_line_index = &result.target.line_index;
    let target_uri = result.target.uri.clone();
    let target_range = target_line_index.line_col_lsp_range(result.target_range)?;
    let target_selection_range =
        target_line_index.line_col_lsp_range(result.target_selection_range)?;
    let value = LocationLink {
        origin_selection_range,
        target_uri,
        target_range,
        target_selection_range,
    };
    Some(value)
}