Enum chrysanthemum::ast::Expr

pub enum Expr {
    UniOp(UOp, Box<Expr>),
    BinOp(Op, Box<Expr>, Box<Expr>),
    FunCall(String, Exprs),
    If(Box<Expr>, Exprs, Exprs),
    Let(Pattern, Type, Box<Expr>),
    Structure(String, Vec<(String, Expr)>),
    Literal(Lit),
    Var(String),
    StructRef(Box<Expr>, String),
    Match(Box<Expr>, Vec<(Pattern, Exprs)>),
    Block(Exprs),
}

Expression that returns a value.

Variants

UniOp(UOp, Box<Expr>)

Unary operation

BinOp(Op, Box<Expr>, Box<Expr>)

Binary operation

FunCall(String, Exprs)

Function call

If(Box<Expr>, Exprs, Exprs)

If-else expression. Right now, else is required, elif is nonexistent. Case, if-body, else-body.

Let(Pattern, Type, Box<Expr>)

Variable binding -- returns () Var name, type, initializer

Structure(String, Vec<(String, Expr)>)

Structure creation Name, fields with initializers

Literal(Lit)

Raw value

Var(String)

Variable reference

StructRef(Box<Expr>, String)

Structure member reference

Match(Box<Expr>, Vec<(Pattern, Exprs)>)

Match expression

Block(Exprs)

A block, combining multiple expr's together into a scope. The value of the last expression is returned.

Trait Implementations

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.

impl PartialEq<Expr> for Expr

fn eq(&self, other: &Expr) -> bool

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

fn ne(&self, other: &Expr) -> bool

This method tests for !=.

impl Debug for Expr

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

Formats the value using the given formatter.

impl Serialize for Expr

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for Expr

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.