Enum Expr 

pub enum Expr {
    Number(f64),
    String(String),
    Bool(bool),
    Error(String),
    CellRef(CellReference),
    Range {
        start: CellReference,
        end: CellReference,
    },
    Function {
        name: String,
        args: Vec<Expr>,
    },
    BinaryOp {
        op: BinaryOperator,
        left: Box<Expr>,
        right: Box<Expr>,
    },
    UnaryOp {
        op: UnaryOperator,
        operand: Box<Expr>,
    },
    Paren(Box<Expr>),
}

A parsed Excel formula expression.

Variants

Number(f64)

Numeric literal (e.g., 42, 3.14)

String(String)

String literal (e.g., “hello”)

Bool(bool)

Boolean literal (TRUE/FALSE)

Error(String)

Error literal (#N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, #NULL!)

CellRef(CellReference)

Cell reference (e.g., A1, $B$2)

Range

Range reference (e.g., A1:B10)

Fields

start: CellReference

end: CellReference

Function

Function call (e.g., SUM(A1:A10))

Fields

name: String

args: Vec<Expr>

BinaryOp

Binary operation (e.g., A1 + B1)

Fields

op: BinaryOperator

left: Box<Expr>

right: Box<Expr>

UnaryOp

Unary operation (e.g., -A1, +5)

Fields

op: UnaryOperator

operand: Box<Expr>

Paren(Box<Expr>)

Parenthesized expression

Trait Implementations

impl Clone for Expr

fn clone(&self) -> Expr

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: &Expr) -> 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 StructuralPartialEq for Expr