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.
• 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:
• 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.
• render_item_decl_with_highlighting 🔒
  Highlights src as an item-decl, 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 🔒