Struct MacroStream

pub struct MacroStream { /* private fields */ }

A stream of tokens.

Implementations

impl MacroStream

pub fn new() -> Self

Create a new empty MacroStream.

pub fn popped(&self) -> usize

Determine how many tokens have been popped from the stream.

pub fn from_tokens(stream: TokenStream) -> ParseResult<Self>

Create a MacroStream from a proc_macro2::TokenStream.

pub fn pop(&mut self) -> Option<Token>

Pop a token from the stream.

pub fn peek(&self) -> Option<&Token>

Peek at the next token in the stream.

pub fn peek_at(&self, i: usize) -> Option<&Token>

Peek at the token at the given index in the stream.

pub fn parse<T>(&mut self) -> Result<T, MacrosError>

where T: Parse,

Parse the stream into a type.

pub fn is_empty(&self) -> bool

Determine if the stream is empty.

pub fn pop_or_err(&mut self) -> Result<Token, ParseError>

Pop a token from the stream, or return an error if the stream is empty.

pub fn peek_or_err(&self) -> Result<&Token, ParseError>

Peek at the next token in the stream, or return an error if the stream is empty.

pub fn push_front(&mut self, token: Token)

Push a token to the front of the stream.

pub fn push_back(&mut self, token: Token)

Push a token to the back of the stream.

pub fn len(&self) -> usize

Get the length of the stream.

pub fn fork(&self) -> Self

Fork the stream (clone the stream and reset the popped count).

pub fn pop_many(&mut self, p: usize)

Pop a number of tokens from the stream.

Trait Implementations

impl Clone for MacroStream

fn clone(&self) -> MacroStream

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MacroStream

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MacroStream

fn default() -> Self

Returns the “default value” for a type.

impl From<TokenStream> for MacroStream

fn from(stream: TokenStream) -> Self

Converts to this type from the input type.

impl PartialEq for MacroStream

fn eq(&self, other: &MacroStream) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Repr for MacroStream

fn repr(&self, name: &str) -> MacroStream

impl ToTokens for MacroStream

fn to_tokens(&self, tokens: &mut TokenStream)

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream

where Self: Sized,

Convert self directly into a TokenStream object.

impl Eq for MacroStream

impl StructuralPartialEq for MacroStream