Struct CfgSelectResult 

struct CfgSelectResult<'cx, 'sess> {
    ecx: &'cx mut ExtCtxt<'sess>,
    site_span: Span,
    selected_tts: TokenStream,
    selected_span: Span,
    other_branches: CfgSelectBranches,
}

This intermediate structure is used to emit parse errors for the branches that are not chosen. The MacResult instance below parses all branches, emitting any errors it encounters, but only keeps the parse result for the selected branch.

Fields

ecx: &'cx mut ExtCtxt<'sess>

site_span: Span

selected_tts: TokenStream

selected_span: Span

other_branches: CfgSelectBranches

Trait Implementations

impl<'cx, 'sess> MacResult for CfgSelectResult<'cx, 'sess>

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

Creates an expression.

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

Creates zero or more statements.

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

Creates zero or more items.

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

Creates zero or more impl items.

fn make_trait_impl_items( self: Box<Self>, ) -> Option<SmallVec<[Box<AssocItem>; 1]>>

Creates zero or more impl items.

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

Creates zero or more trait items.

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

Creates zero or more items in an extern {} block

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

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

Creates a pattern.

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

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

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

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

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

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

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

fn make_where_predicates( self: Box<Self>, ) -> Option<SmallVec<[WherePredicate; 1]>>

fn make_crate(self: Box<Self>) -> Option<Crate>

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 120 bytes