|author||Natalie Weizenbaum <firstname.lastname@example.org>||Thu Dec 20 14:34:28 2018 -0800|
|committer||Natalie Weizenbaum <email@example.com>||Thu Dec 20 14:34:28 2018 -0800|
Improve span highlighting * Fully highlights multiline spans. * Includes line numbers. * Uses Unicode glyphs for highlighting when available. * Includes context after the last line of the span for a manually-constructed SourceSpanWithContext. This draws heavy inspiration from Rust's multiline error highlighting.
source_span is a library for tracking locations in source code. It's designed to provide a standard representation for source code locations and spans so that disparate packages can easily pass them among one another, and to make it easy to generate human-friendly messages associated with a given piece of code.
The most commonly-used class is the package's namesake,
SourceSpan. It represents a span of characters in some source file, and is often attached to an object that has been parsed to indicate where it was parsed from. It provides access to the text of the span via
SourceSpan.text and can be used to produce human-friendly messages using
When parsing code from a file,
SourceFile is useful. Not only does it provide an efficient means of computing line and column numbers,
SourceFile.span() returns special
FileSpans that are able to provide more context for their error messages.