Crate ra_ap_tt

tt crate defines a TokenTree data structure: this is the interface (both input and output) of macros. It closely mirrors proc_macro crate’s TokenTree.

Modules

• buffer
  Stateful iteration over token trees.
• iter
  A “Parser” structure for token trees. We use this when parsing a declarative macro definition into a list of patterns and templates.

Structs

• DelimSpan
• Delimiter
• Ident
  Identifier or keyword.
• Lit
• Literal
• Punct
• Subtree
• SubtreeBuilder
• TextRange
  A range in text, represented as a pair of TextSize.
• TextSize
  A measure of text length. Also, equivalently, an index into text.

Enums

• DelimiterKind
• IdentIsRaw
• Leaf
• LitKind
• Spacing
  Indicates whether a token can join with the following token to form a compound token. Used for conversions to proc_macro::Spacing. Also used to guide pretty-printing, which is where the JointHidden value (which isn’t part of proc_macro::Spacing) comes in useful.
• TokenTree

Functions

• pretty
• token_to_literal