Enum SeedsExpr 

pub enum SeedsExpr {
    List(Punctuated<Expr, Comma>),
    Expr(Box<Expr>),
}

Seeds can be written as a literal slice ([ a, b ]) or any expression that produces &[&[u8]] at run time.

Variants

List(Punctuated<Expr, Comma>)

Example: [ b"prefix".as_ref(), key.as_ref() ]

Expr(Box<Expr>)

Example: pda_seeds(key)

Implementations

impl SeedsExpr

pub fn pop(&mut self) -> Option<Pair<Expr, Comma>>

Mirrors Punctuated::pop: removes and returns the last element and its trailing punctuation when this is the List variant. For the Expr variant, which represents a single non-list seed expression, returns None because there is no list to pop from.

pub fn push_value(&mut self, value: Expr)

pub fn is_empty(&self) -> bool

Mirrors Punctuated::push_value: pushes a value without punctuation onto the underlying list when this is the List variant. No-op for the Expr variant.

pub fn iter(&self) -> Box<dyn Iterator<Item = &Expr> + '_>

Immutable iteration over every seed expression, regardless of variant

pub fn len(&self) -> usize

The number of seeds represented: list.len() for List and 1 for Expr.

Trait Implementations

impl Clone for SeedsExpr

fn clone(&self) -> SeedsExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SeedsExpr

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

Formats the value using the given formatter.

impl Parse for SeedsExpr

fn parse(stream: ParseStream<'_>) -> Result<Self>

impl ToTokens for SeedsExpr

Allow quote!{ #seeds }

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.