Method Fold

cel/macro.go:469–487

Fold creates a fold comprehension instruction. - iterVar is the iteration variable name. - iterRange represents the expression that resolves to a list or map where the elements or keys (respectively) will be iterated over. - accuVar is the accumulation variable name, typically parser.AccumulatorNam

(iterVar string,
	iterRange *exprpb.Expr,
	accuVar string,
	accuInit *exprpb.Expr,
	condition *exprpb.Expr,
	step *exprpb.Expr,
	result *exprpb.Expr)

// environment in the step and condition expressions. Presently, the name __result__ is commonly
// used by built-in macros but this may change in the future.
func (ah *adaptingHelper) Fold(iterVar string,
	iterRange *exprpb.Expr,
	accuVar string,
	accuInit *exprpb.Expr,
	condition *exprpb.Expr,
	step *exprpb.Expr,
	result *exprpb.Expr) *exprpb.Expr {
	return mustAdaptToProto(
		ah.modernHelper.NewComprehension(
			mustAdaptToExpr(iterRange),
			iterVar,
			accuVar,
			mustAdaptToExpr(accuInit),
			mustAdaptToExpr(condition),
			mustAdaptToExpr(step),
			mustAdaptToExpr(result),
		),
	)
}

// Ident creates an identifier Expr value.
func (ah *adaptingHelper) Ident(name string) *exprpb.Expr {