// Copyright (c) 2024 Celestino Amoroso (celestino.amoroso@gmail.com).
// All rights reserved.

// operand-map.go
package expr

// -------- map term
func newMapTerm(args map[any]*term) *term {
	return &term{
		tk:       *NewValueToken(0, 0, SymDict, "{}", args),
		parent:   nil,
		children: nil,
		position: posLeaf,
		priority: priValue,
		evalFunc: evalMap,
	}
}

// -------- map func
func evalMap(ctx ExprContext, self *term) (v any, err error) {
	dict, _ := self.value().(map[any]*term)
	items := make(map[any]any, len(dict))
	for key, tree := range dict {
		var param any
		if param, err = tree.compute(ctx); err != nil {
			break
		}
		items[key] = param
	}
	if err == nil {
		v = items
	}
	return
}