Function format_adam_error 

pub fn format_adam_error(
    e: &Error,
    parsed: &ParsedSheet,
    source: &str,
    file_name: &str,
    renderer: &Renderer,
) -> String

Formats an Error as a rustc-style diagnostic when possible.

Error::MethodFailed wraps an anyhow::Error raised by a compiled method body; when that error carries a SpanContext (attached automatically by cel-parser’s span-diagnostics feature for built-in arithmetic ops) this renders a full caret diagnostic against source using renderer — pass Renderer::styled for a real terminal (ANSI colors) or Renderer::plain for a context that can’t display them (a browser <pre> element, a log file) — with file_name (e.g. "begin/examples/toy_example.adm2") shown in the diagnostic header. Otherwise, e’s sites are resolved against parsed via adam_lang::ParsedSheet::locate_error: zero resolved sites falls back to e’s Display message; exactly one renders a single-caret diagnostic; two or more render a multi-span backtrace (e.g. every relationship binding in a cycle), primary site first.

• Complexity: O(n) in the length of source, plus O(s) in the number of e’s sites — ParsedSheet::locate_error and, on the multi-span path, cel_parser::format_multi_span both re-scan source to render the annotated snippet.