Struct Evaluator 

pub struct Evaluator<'h> {
    pub host: &'h mut dyn Host,
    pub sheet: usize,
    pub at: CellRef,
    /* private fields */
}

Fields

host: &'h mut dyn Host

sheet: usize

at: CellRef

Implementations

impl<'h> Evaluator<'h>

pub fn apply_lambda(&mut self, l: &Lambda, args: &[Expr]) -> Ev

impl<'h> Evaluator<'h>

pub fn new(host: &'h mut dyn Host, sheet: usize, at: CellRef) -> Self

pub fn value(&mut self, e: &Expr) -> Value

Evaluates to a value (references are dereferenced; multi-cell → array).

pub fn reference_areas(&self, r: &Reference) -> Result<Vec<Area>, CellError>

pub fn deref(&mut self, ev: Ev) -> Value

Dereferences: one cell → its value; a block → an array; several areas → #VALUE!.

A block keeps its full shape (blanks included) when it holds at most FULL_SIZE_CELLS cells, or when it holds at most FULL_SIZE_BOUNDED_CELLS cells (one full column’s worth) and does not run to the sheet’s last row or column. Every other block (larger, or a bigger one that runs to the sheet’s edge, such as A:A or 1:1) is trimmed to the sheet’s used range before its values are read. An array over MAX_CELLS is #NUM!.

pub fn area_value(&mut self, a: &Area) -> Value

pub fn trim(&mut self, a: &Area) -> RangeRef

Trims the bottom/right of an area to the sheet’s used range (keeps the top-left so positions stay right).

pub fn eval(&mut self, e: &Expr) -> Ev