Module highlight

Basic syntax highlighting functionality.

This module uses librustc_ast’s lexer to provide token-based highlighting for the HTML documentation generated by rustdoc.

Use the render_with_highlighting to highlight some rust code.

Structs

Classifier 🔒

Processes program tokens, classifying strings of text by highlighting category (Class).

DecorationInfo 🔒

Decorations are represented as a map from CSS class to vector of character ranges. Each range will be wrapped in a span with that class.

Decorations 🔒

Custom spans inserted into the source. Eg –scrape-examples uses this to highlight function calls

HrefContext 🔒

This type is needed in case we want to render links on items to allow to go to their definition.

LineInfo 🔒

PeekIter 🔒

This iterator comes from the same idea than “Peekable” except that it allows to “peek” more than just the next item by using peek_next. The peek method always returns the next item after the current one whereas peek_next will return the next item after the last one peeked.

TokenHandler 🔒

This type is used as a conveniency to prevent having to pass all its fields as arguments into the various functions (which became its methods).

TokenIter 🔒

Enums

Class 🔒

How a span of text is classified. Mostly corresponds to token kinds.

Highlight 🔒

Tooltip 🔒

Functions

can_merge 🔒

Check if two Class can be merged together. In the following rules, “unclassified” means None basically (since it’s Option<Class>). The following rules apply:

empty_line_number 🔒

enter_span 🔒

Called when we start processing a span of text that should be highlighted. The Class argument specifies how it should be highlighted.

exit_span 🔒

Called at the end of a span of highlighted text.

get_real_ident_class 🔒

Classifies into identifier class; returns None if this is a non-keyword identifier.

render_example_with_highlighting 🔒

Highlights src as an inline example, returning the HTML output.

string 🔒

Called for a span of text. If the text should be highlighted differently from the surrounding text, then the Class argument will be a value other than None.

string_without_closing_tag 🔒

This function writes text into out with some modifications depending on klass:

write_code 🔒

Convert the given src source code into HTML by adding classes for highlighting.

write_footer 🔒

write_header 🔒

write_line_number 🔒

write_scraped_line_number 🔒