step() is a new keyword introduced to represent the query step width in duration expressions.
min(a,b) and max(a,b) return the min and max from two duration expressions.
Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com>
Split unary operator handling in duration expressions into two specific
cases to fix precedence conflicts:
- Handle unary operators with number literals directly
- Handle unary operators with parenthesized expressions separately
This prevents unary minus from incorrectly binding to subsequent
operators in expressions like `foo offset -1^1`, ensuring it parses
as `(foo offset -1) ^ 1` rather than `foo offset (-1^1)`.
Fixes#16711
Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com>
Updated the parser to allow calculations in PromQL durations.
This enables durations in the form of:
rate(http_requests_total[10m+2s])
The computation of the calculations is done directly at the parse level and does not hit the PromQL Engine.
The lexer has also been updated and improved, in particular for subqueries.
Buxfix: rate(http_requests_total[0]) is no longer allowed.
Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com>
