Function parseAndEval

go/engine/expr/parser.go:17–24

parseAndEval evaluates a simple expression string with literals and operators. Supports: +, -, *, /, %, ==, !=, <, >, <=, >=, &&, ||, !

(expr string, targetType workflow.DataType)

// parseAndEval evaluates a simple expression string with literals
// and operators. Supports: +, -, *, /, %, ==, !=, <, >, <=, >=, &&, ||, !
func parseAndEval(expr string, targetType workflowapi.DataType) (Value, error) {
	p := &parser{input: expr, pos: 0}
	val, err := p.parseOr()
	if err != nil {
		return Value{}, fmt.Errorf("evaluating %q: %w", expr, err)
	}
	return val.Cast(targetType), nil
}

// Minimal recursive-descent expression parser/evaluator.
type parser struct {