Trait TokenTreeExt

pub trait TokenTreeExt:
    ProcMacroExt<TokenTreeExt = Self>
    + TokenTree
    + Parse<Self>
    + IntoTokens<Self>
    + ToTokens<Self>
    + ToTokenStream<Self::TokenStreamExt> {
    // Required methods
    fn kind(&self) -> TokenTreeKind;
    fn group(&self) -> Option<&Self::Group>;
    fn group_mut(&mut self) -> Option<&mut Self::Group>;
    fn into_group(self) -> Option<Self::Group>;
    fn ident(&self) -> Option<&Self::Ident>;
    fn ident_mut(&mut self) -> Option<&mut Self::Ident>;
    fn into_ident(self) -> Option<Self::Ident>;
    fn punct(&self) -> Option<&Self::Punct>;
    fn punct_mut(&mut self) -> Option<&mut Self::Punct>;
    fn into_punct(self) -> Option<Self::Punct>;
    fn literal(&self) -> Option<&Self::Literal>;
    fn literal_mut(&mut self) -> Option<&mut Self::Literal>;
    fn into_literal(self) -> Option<Self::Literal>;

    // Provided methods
    fn is_group(&self) -> bool { ... }
    fn is_ident(&self) -> bool { ... }
    fn is_punct(&self) -> bool { ... }
    fn is_literal(&self) -> bool { ... }
    fn flatten_group(&mut self) { ... }
}

Extensions for TokenTree.

This trait is implemented for TokenTree in proc_macro and proc_macro2 if the corresponding feature is enabled.

Required Methods

fn kind(&self) -> TokenTreeKind

Get the kind of this TokenTree.

fn group(&self) -> Option<&Self::Group>

If this TokenTree is a TokenTree::Group, return a reference to the Group.

fn group_mut(&mut self) -> Option<&mut Self::Group>

If this TokenTree is a TokenTree::Group, return a mutable reference to the Group.

fn into_group(self) -> Option<Self::Group>

If this TokenTree is a TokenTree::Group, return the Group.

fn ident(&self) -> Option<&Self::Ident>

If this TokenTree is a TokenTree::Ident, return a reference to the Ident.

fn ident_mut(&mut self) -> Option<&mut Self::Ident>

If this TokenTree is a TokenTree::Ident, return a mutable reference to the Ident.

fn into_ident(self) -> Option<Self::Ident>

If this TokenTree is a TokenTree::Ident, return the Ident.

fn punct(&self) -> Option<&Self::Punct>

If this TokenTree is a TokenTree::Punct, return a reference to the Punct.

fn punct_mut(&mut self) -> Option<&mut Self::Punct>

If this TokenTree is a TokenTree::Punct, return a mutable reference to the Punct.

fn into_punct(self) -> Option<Self::Punct>

Check if this TokenTree is a TokenTree::Punct.

fn literal(&self) -> Option<&Self::Literal>

If this TokenTree is a TokenTree::Literal, return a reference to the Literal.

fn literal_mut(&mut self) -> Option<&mut Self::Literal>

If this TokenTree is a TokenTree::Literal, return a mutable reference to the Literal.

fn into_literal(self) -> Option<Self::Literal>

Check if this TokenTree is a TokenTree::Literal.

Provided Methods

fn is_group(&self) -> bool

Check if this TokenTree is a TokenTree::Group.

fn is_ident(&self) -> bool

Check if this TokenTree is a TokenTree::Ident.

fn is_punct(&self) -> bool

Check if this TokenTree is a TokenTree::Punct.

fn is_literal(&self) -> bool

Check if this TokenTree is a TokenTree::Literal.

fn flatten_group(&mut self)

If the TokenTree is a group with delimiter None containing a single item, replace the group with that item, recursively.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl TokenTreeExt for TokenTree

Available on crate feature proc-macro only.

fn kind(&self) -> TokenTreeKind

fn group(&self) -> Option<&<Self as ProcMacro>::Group>

fn group_mut(&mut self) -> Option<&mut <Self as ProcMacro>::Group>

fn into_group(self) -> Option<<Self as ProcMacro>::Group>

fn ident(&self) -> Option<&<Self as ProcMacro>::Ident>

fn ident_mut(&mut self) -> Option<&mut <Self as ProcMacro>::Ident>

fn into_ident(self) -> Option<<Self as ProcMacro>::Ident>

fn punct(&self) -> Option<&<Self as ProcMacro>::Punct>

fn punct_mut(&mut self) -> Option<&mut <Self as ProcMacro>::Punct>

fn into_punct(self) -> Option<<Self as ProcMacro>::Punct>

fn literal(&self) -> Option<&<Self as ProcMacro>::Literal>

fn literal_mut(&mut self) -> Option<&mut <Self as ProcMacro>::Literal>

fn into_literal(self) -> Option<<Self as ProcMacro>::Literal>

impl TokenTreeExt for TokenTree

Available on crate feature proc-macro2 only.

fn kind(&self) -> TokenTreeKind

fn group(&self) -> Option<&<Self as ProcMacro>::Group>

fn group_mut(&mut self) -> Option<&mut <Self as ProcMacro>::Group>

fn into_group(self) -> Option<<Self as ProcMacro>::Group>

fn ident(&self) -> Option<&<Self as ProcMacro>::Ident>

fn ident_mut(&mut self) -> Option<&mut <Self as ProcMacro>::Ident>

fn into_ident(self) -> Option<<Self as ProcMacro>::Ident>

fn punct(&self) -> Option<&<Self as ProcMacro>::Punct>

fn punct_mut(&mut self) -> Option<&mut <Self as ProcMacro>::Punct>

fn into_punct(self) -> Option<<Self as ProcMacro>::Punct>

fn literal(&self) -> Option<&<Self as ProcMacro>::Literal>

fn literal_mut(&mut self) -> Option<&mut <Self as ProcMacro>::Literal>

fn into_literal(self) -> Option<<Self as ProcMacro>::Literal>

Implementors