Enum Expr

pub enum Expr<'a> {
    Variable(VariablePath<'a>),
    Literal(Literal<'a>),
    UnOp(UnOpKind, Box<Self>),
    BinOp(BinOpKind, Box<Self>, Box<Self>),
    FunCall(Box<Self>, Vec<Self>),
}

an expression.

to implementer: you can use stack machine to express the evaluation of this tree structure.

Variants

Variable(VariablePath<'a>)

Literal(Literal<'a>)

UnOp(UnOpKind, Box<Self>)

BinOp(BinOpKind, Box<Self>, Box<Self>)

FunCall(Box<Self>, Vec<Self>)

Trait Implementations

impl<'a> Debug for Expr<'a>

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

Formats the value using the given formatter.

impl<'a> PartialEq for Expr<'a>

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> StructuralPartialEq for Expr<'a>