Struct proc_macro_kwargs::args::ParsedKeywordArguments

pub struct ParsedKeywordArguments<K: MacroKeywordArgs> { /* private fields */ }

The list of parsed keyword arguments

Implementations

impl<K: MacroKeywordArgs> ParsedKeywordArguments<K>

pub fn get(&self, id: K::ArgId) -> Option<&KeywordArg<K>>

Lookup a argument by its id, returning None if it’s missing

pub fn take(&mut self, id: K::ArgId) -> Option<KeywordArg<K>>

Consume the argument with the specified id, returning None if it’s missing

Implicitly shifts the ordering of the map.

pub fn require(&mut self, id: K::ArgId) -> Result<KeywordArg<K>>

Require that the argument with the specified id exists, returning an error if it is missing

Consumes the argument, as if calling take

pub fn iter(&self) -> impl Iterator<Item = &KeywordArg<K>> + '_

Iterate over the original list of arguments, in the order of their declaration

Trait Implementations

impl<K: MacroKeywordArgs> MacroArg for ParsedKeywordArguments<K>

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

Parse the argument to the macro

impl<K: MacroKeywordArgs> Parse for ParsedKeywordArguments<K>

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