Struct SimpleMapCtx 

pub struct SimpleMapCtx<'a, 'b> { /* private fields */ }

Elementwise mapping context (minimal unary-numeric support for Milestone 3)

This initial version targets unary numeric builtins (e.g., SIN/COS). It detects an array/range input, iterates elementwise in row-major order, applies the provided unary function, and produces an output LiteralValue:

• Scalar input => caller should prefer scalar fallback; this context is designed for array/range cases and returns an error if no array present.

Implementations

impl<'a, 'b> SimpleMapCtx<'a, 'b>

pub fn new( args: &'a [ArgumentHandle<'a, 'b>], ctx: &'a dyn FunctionContext, ) -> Self

pub fn input_count(&self) -> usize

pub fn broadcast_shape(&self) -> (usize, usize)

pub fn is_array_context(&self) -> bool

pub fn map_unary_numeric<F>(&mut self, f: F) -> Result<(), ExcelError>

where F: FnMut(f64) -> Result<LiteralValue, ExcelError>,

Map a unary numeric function over the (broadcasted) input. Policy: NumberLenientText; non-coercible values yield #VALUE! per cell.

pub fn map_binary_numeric<F>(&mut self, f: F) -> Result<(), ExcelError>

where F: FnMut(f64, f64) -> Result<LiteralValue, ExcelError>,

Binary numeric map with broadcasting across two inputs (args[0], args[1]).

pub fn take_output(self) -> LiteralValue

Trait Implementations

impl<'a, 'b> FnMapCtx for SimpleMapCtx<'a, 'b>

fn is_array_context(&self) -> bool

Whether inputs indicate an array/range context. If false, callers should fall back to scalar.

fn map_unary_numeric( &mut self, f: &mut dyn FnMut(f64) -> Result<LiteralValue, ExcelError>, ) -> Result<(), ExcelError>

Apply a unary numeric mapping over the broadcasted input. The closure should return the mapped cell.

fn map_binary_numeric( &mut self, f: &mut dyn FnMut(f64, f64) -> Result<LiteralValue, ExcelError>, ) -> Result<(), ExcelError>

Apply a binary numeric mapping over the broadcasted inputs (first two args).

fn finalize(&mut self) -> LiteralValue

Finalize and retrieve the output value (typically an Array). Implementations may move out internal buffers.