A negative number literal is expanded as an unary - (minus) of a positive numbers.

[pacesm]

Tested with version 0.4.1 in Python 3.12.12

A negative number literals are expanded as an unary minus of a positive number:

>>> import cql2 
>>> cql2.Expr("property > -2").to_text()
'(property > -1 * 2)'
>>> cql2.Expr("property > -3.14").to_text()
'(property > -1 * 3.14)'

While the result is technically correct and could be possibly reduced:

>>> cql2.Expr("property > -2").reduce().to_text()
'(property > -2)'
>>> cql2.Expr("property > -3.14").reduce().to_text()
'(property > -3.14)'

it is a bit unexpected and, IMO, the number literals should not be further expanded as expressions.

Also, the reduction might have some unexpected side effects: #111