Enum syntex_syntax::ast::Expr_

pub enum Expr_ {
    ExprBox(P<Expr>),
    ExprInPlace(P<Expr>, P<Expr>),
    ExprVec(Vec<P<Expr>>),
    ExprCall(P<Expr>, Vec<P<Expr>>),
    ExprMethodCall(SpannedIdent, Vec<P<Ty>>, Vec<P<Expr>>),
    ExprTup(Vec<P<Expr>>),
    ExprBinary(BinOp, P<Expr>, P<Expr>),
    ExprUnary(UnOp, P<Expr>),
    ExprLit(P<Lit>),
    ExprCast(P<Expr>, P<Ty>),
    ExprIf(P<Expr>, P<Block>, Option<P<Expr>>),
    ExprIfLet(P<Pat>, P<Expr>, P<Block>, Option<P<Expr>>),
    ExprWhile(P<Expr>, P<Block>, Option<Ident>),
    ExprWhileLet(P<Pat>, P<Expr>, P<Block>, Option<Ident>),
    ExprForLoop(P<Pat>, P<Expr>, P<Block>, Option<Ident>),
    ExprLoop(P<Block>, Option<Ident>),
    ExprMatch(P<Expr>, Vec<Arm>),
    ExprClosure(CaptureClause, P<FnDecl>, P<Block>),
    ExprBlock(P<Block>),
    ExprAssign(P<Expr>, P<Expr>),
    ExprAssignOp(BinOp, P<Expr>, P<Expr>),
    ExprField(P<Expr>, SpannedIdent),
    ExprTupField(P<Expr>, Spanned<usize>),
    ExprIndex(P<Expr>, P<Expr>),
    ExprRange(Option<P<Expr>>, Option<P<Expr>>),
    ExprPath(Option<QSelf>, Path),
    ExprAddrOf(Mutability, P<Expr>),
    ExprBreak(Option<SpannedIdent>),
    ExprAgain(Option<SpannedIdent>),
    ExprRet(Option<P<Expr>>),
    ExprInlineAsm(InlineAsm),
    ExprMac(Mac),
    ExprStruct(Path, Vec<Field>, Option<P<Expr>>),
    ExprRepeat(P<Expr>, P<Expr>),
    ExprParen(P<Expr>),
}

Variants

ExprBox	A box x expression.
ExprInPlace	First expr is the place; second expr is the value.
ExprVec	An array ([a, b, c, d])
ExprCall	A function call The first field resolves to the function itself, and the second field is the list of arguments
ExprMethodCall	A method call (x.foo::<Bar, Baz>(a, b, c, d)) The SpannedIdent is the identifier for the method name. The vector of Tys are the ascripted type parameters for the method (within the angle brackets). The first element of the vector of Exprs is the expression that evaluates to the object on which the method is being called on (the receiver), and the remaining elements are the rest of the arguments. Thus, x.foo::<Bar, Baz>(a, b, c, d) is represented as ExprMethodCall(foo, [Bar, Baz], [x, a, b, c, d]).
ExprTup	A tuple ((a, b, c ,d))
ExprBinary	A binary operation (For example: a + b, a * b)
ExprUnary	A unary operation (For example: !x, *x)
ExprLit	A literal (For example: 1u8, "foo")
ExprCast	A cast (foo as f64)
ExprIf	An if block, with an optional else block if expr { block } else { expr }
ExprIfLet	An if let expression with an optional else block if let pat = expr { block } else { expr } This is desugared to a match expression.
ExprWhile	A while loop, with an optional label 'label: while expr { block }
ExprWhileLet	A while-let loop, with an optional label 'label: while let pat = expr { block } This is desugared to a combination of loop and match expressions.
ExprForLoop	A for loop, with an optional label 'label: for pat in expr { block } This is desugared to a combination of loop and match expressions.
ExprLoop	Conditionless loop (can be exited with break, continue, or return) 'label: loop { block }
ExprMatch	A match block.
ExprClosure	A closure (for example, move |a, b, c| {a + b + c})
ExprBlock	A block ({ ... })
ExprAssign	An assignment (a = foo())
ExprAssignOp	An assignment with an operator For example, a += 1.
ExprField	Access of a named struct field (obj.foo)
ExprTupField	Access of an unnamed field of a struct or tuple-struct For example, foo.0.
ExprIndex	An indexing operation (foo[2])
ExprRange	A range (1..2, 1.., or ..2)
ExprPath	Variable reference, possibly containing :: and/or type parameters, e.g. foo::bar::. Optionally "qualified", e.g. <Vec<T> as SomeTrait>::SomeType.
ExprAddrOf	A referencing operation (&a or &mut a)
ExprBreak	A break, with an optional label to break
ExprAgain	A continue, with an optional label
ExprRet	A return, with an optional value to be returned
ExprInlineAsm	Output of the asm!() macro
ExprMac	A macro invocation; pre-expansion
ExprStruct	A struct literal expression. For example, Foo {x: 1, y: 2}, or Foo {x: 1, .. base}, where base is the Option<Expr>.
ExprRepeat	An array literal constructed from one repeated element. For example, [1u8; 5]. The first expression is the element to be repeated; the second is the number of times to repeat it.
ExprParen	No-op: used solely so we can pretty-print faithfully

Trait Implementations

Derived Implementations

impl Debug for Expr_

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Hash for Expr_

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the state given, updating the hasher as necessary.

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher

Feeds a slice of this type into the state provided.

impl Decodable for Expr_

fn decode<__D: Decoder>(__arg_0: &mut __D) -> Result<Expr_, __D::Error>

impl Encodable for Expr_

fn encode<__S: Encoder>(&self, __arg_0: &mut __S) -> Result<(), __S::Error>

impl Eq for Expr_

impl PartialEq for Expr_

fn eq(&self, __arg_0: &Expr_) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Expr_) -> bool

This method tests for !=.

impl Clone for Expr_

fn clone(&self) -> Expr_

Returns a copy of the value.

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

Performs copy-assignment from source.