Enum Expr 

pub enum Expr {
    Num(f64),
    V(Ident),
    I(Ident),
    Bin(ExprOp, Box<Expr>, Box<Expr>),
    Call(ExprFunc, Box<Expr>),
}

A B-source expression: the 3f5 parse tree (INPparseNode, inpptree.h) as PTparse builds it — no constant folding (only the derivative trees fold, in dune-core) and every name already resolved. Built by crate::parse_expr.

Variants

Num(f64)

PT_CONSTANT: a number or one of the constants e, pi.

V(Ident)

v(node) (PT_VAR of type IF_NODE). v(a,b) is parsed into v(a) - v(b), as mkfnode does.

I(Ident)

i(vname) (PT_VAR of type IF_INSTANCE): the branch current of a device with a branch equation (V, E, H, L, a voltage-type B).

Bin(ExprOp, Box<Expr>, Box<Expr>)

PT_PLUS … PT_POWER.

Call(ExprFunc, Box<Expr>)

PT_FUNCTION (unary minus included, as ExprFunc::Neg).

Implementations

impl Expr

pub fn visit_refs_mut( &mut self, node: &mut dyn FnMut(&mut Ident), device: &mut dyn FnMut(&mut Ident), )

Visit every v() node name and i() device name, mutably (subcircuit expansion renames them). Depth is bounded by the parser, so the recursion is too.

Trait Implementations

impl Clone for Expr

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Expr

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

Formats the value using the given formatter.

impl PartialEq for Expr

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Expr