Function createLspExtensions

web-build/src/editor.ts:381–488

(lsp: WatLSP)

}

function createLspExtensions(lsp: WatLSP) {
  const parseIfNeeded = createParseCache(lsp);

  const watLinter = linter(
    (view) => {
      try {
        const text = view.state.doc.toString();
        if (!isWatContent(text)) return [];

        parseIfNeeded(text);
        const diags = lsp.provideDiagnostics();
        return diags.map(
          (d): Diagnostic => ({
            from: posToOffset(view.state.doc, d.range.start.line, d.range.start.character),
            to: posToOffset(view.state.doc, d.range.end.line, d.range.end.character),
            severity: d.severity === 1 ? "error" : d.severity === 2 ? "warning" : "info",
            message: d.message,
          }),
        );
      } catch {
        return [];
      }
    },
    { delay: 300 },
  );

  const watHover = hoverTooltip((view, pos) => {
    try {
      const text = view.state.doc.toString();
      if (!isWatContent(text)) return null;

      const line = view.state.doc.lineAt(pos);
      parseIfNeeded(text);
      const hover = lsp.provideHover(line.number - 1, pos - line.from);
      if (!hover) return null;

      const from = hover.range
        ? posToOffset(view.state.doc, hover.range.start.line, hover.range.start.character)
        : pos;
      const to = hover.range
        ? posToOffset(view.state.doc, hover.range.end.line, hover.range.end.character)
        : pos;
      return {
        pos: from,
        end: to,
        above: true,
        create() {
          const dom = document.createElement("div");
          dom.className = "wat-hover";
          dom.innerHTML = renderHoverMarkdown(hover.contents.value);
          return { dom };
        },
      };
    } catch {
      return null;
    }
  });