Struct ProcMacroEnv 

pub struct ProcMacroEnv<'a> { /* private fields */ }

The ProcMacroEnv struct is the root of the proc macro environment. It defines the Path structure that is used for calling functions

Implementations

impl<'a> ProcMacroEnv<'a>

pub fn new() -> Self

Creates a new proc macro environement. This would usually be called only once per proc macro definition.

pub fn add_path(&mut self, ident: &str, path: Path<'a>)

Adds a path to the root of the proc macro environment.

Panics

This method will panic if the same identifier is added twice or the identifier is invalid.

pub fn process(&self, tokens: TokenStream) -> TokenStream

Process the provided TokenSteam. On success, this will return a TokenSteam that defines a set of constants. On failure, a compile time error will be reported.

Trait Implementations

impl Default for ProcMacroEnv<'_>

fn default() -> Self

Returns the “default value” for a type.