Module parse 

Logic for parsing elements of the TeX grammar from token streams.

This parsing module is based around the Parsable trait, which is the most important type in the module. This trait is implemented by Rust types that correspond to elements of the TeX grammar. The trait implementation provides a way to parse grammar elements out of the input stream.

The module contains implementations of Parsable for tuples where each element is parsable. This allows expressions like <integer><relation><integer> to be parsed by one invocation of Parsable::parse, in this case on the type (i32, std::cmp::Ordering, i32).

The second most important thing is the collection of custom Rust types like OptionalEquals and FileLocation which correspond to Rust grammar elements.

Finally this module contains some functions for special situation like parsing lists of tokens.

Structs

Error

FileLocation

Representation of a file location in TeX

LeftBrace

OptionalEquals

When parsed, this type consumes an optional equals from the token stream.

OptionalEqualsUnexpanded

When parsed, this type consumes an optional equals from the token stream without performing expansion.

OptionalSpace

When parsed, this type consumes an optional space from the token stream.

Ordering

Spaces

When parsed, this type consumes an arbitrary number of spaces from the input stream

SpacesUnexpanded

When parsed, this type consumes an arbitrary number of spaces from the unexpanded input stream

Uint

When parsed, this type returns a nonnegative integer with the provided upper bound.

UnexpandedTokenList

Traits

Parsable

Implementations of this trait are elements of the TeX grammar than can be parsed from a stream of tokens.

Functions

finish_parsing_balanced_tokens

Parses balanced tokens from the stream.

parse_keyword

Parses a keyword from the input stream.