presto-main/src/main/java/io/prestosql/sql/planner/iterative/rule/ExpressionRewriteRuleSet.java/ExpressionRewriteRuleSet/rules
class ExpressionRewriteRuleSet:    public Set<Rule<?>> rules()
    {
        return ImmutableSet.of(
                projectExpressionRewrite(),
                aggregationExpressionRewrite(),
                filterExpressionRewrite(),
                joinExpressionRewrite(),
                valuesExpressionRewrite());
    }