Struct syntax::ext::base::MacEager

pub struct MacEager {
    pub expr: Option<P<Expr>>,
    pub pat: Option<P<Pat>>,
    pub items: Option<SmallVec<[P<Item>; 1]>>,
    pub impl_items: Option<SmallVec<[ImplItem; 1]>>,
    pub trait_items: Option<SmallVec<[TraitItem; 1]>>,
    pub foreign_items: Option<SmallVec<[ForeignItem; 1]>>,
    pub stmts: Option<SmallVec<[Stmt; 1]>>,
    pub ty: Option<P<Ty>>,
}

MacResult implementation for the common case where you've already built each form of AST that you might return.

Fields

expr: Option<P<Expr>>

pat: Option<P<Pat>>

items: Option<SmallVec<[P<Item>; 1]>>

impl_items: Option<SmallVec<[ImplItem; 1]>>

trait_items: Option<SmallVec<[TraitItem; 1]>>

foreign_items: Option<SmallVec<[ForeignItem; 1]>>

stmts: Option<SmallVec<[Stmt; 1]>>

ty: Option<P<Ty>>

Methods

impl MacEager

pub fn expr(v: P<Expr>) -> Box<dyn MacResult>

pub fn pat(v: P<Pat>) -> Box<dyn MacResult>

pub fn items(v: SmallVec<[P<Item>; 1]>) -> Box<dyn MacResult>

pub fn impl_items(v: SmallVec<[ImplItem; 1]>) -> Box<dyn MacResult>

pub fn trait_items(v: SmallVec<[TraitItem; 1]>) -> Box<dyn MacResult>

pub fn foreign_items(v: SmallVec<[ForeignItem; 1]>) -> Box<dyn MacResult>

pub fn stmts(v: SmallVec<[Stmt; 1]>) -> Box<dyn MacResult>

pub fn ty(v: P<Ty>) -> Box<dyn MacResult>

Trait Implementations

impl MacResult for MacEager

fn make_expr(self: Box<Self>) -> Option<P<Expr>>

Create an expression.

fn make_items(self: Box<Self>) -> Option<SmallVec<[P<Item>; 1]>>

Create zero or more items.

fn make_impl_items(self: Box<Self>) -> Option<SmallVec<[ImplItem; 1]>>

Create zero or more impl items.

fn make_trait_items(self: Box<Self>) -> Option<SmallVec<[TraitItem; 1]>>

Create zero or more trait items.

fn make_foreign_items(self: Box<Self>) -> Option<SmallVec<[ForeignItem; 1]>>

Create zero or more items in an extern {} block

fn make_stmts(self: Box<Self>) -> Option<SmallVec<[Stmt; 1]>>

Create zero or more statements.

fn make_pat(self: Box<Self>) -> Option<P<Pat>>

Create a pattern.

fn make_ty(self: Box<Self>) -> Option<P<Ty>>

impl Default for MacEager

fn default() -> MacEager

Returns the "default value" for a type.