Crate ra_ap_tt 

tt crate defines a TokenTree data structure: this is the interface (both input and output) of macros.

The TokenTree is semantically a tree, but for performance reasons it is stored as a flat structure.

Re-exports

pub use self::iter::TtElement;

pub use self::iter::TtIter;

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

Span

Spans represent a region of code, used by the IDE to be able link macro inputs and outputs together. Positions in spans are relative to some SpanAnchor to make them more incremental friendly.

Subtree

SubtreeBuilderRestorePoint

SubtreeView

TextRange

A range in text, represented as a pair of TextSize.

TextSize

A measure of text length. Also, equivalently, an index into text.

TokenTreesView

TopSubtree

TopSubtreeBuilder

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

Constants

MAX_GLUED_PUNCT_LEN

Functions

pretty

token_to_literal