Module binary 

Binary expression parsing for PromQL.

This module handles parsing of binary operators and their modifiers.

Binary Operators

Operators listed from lowest to highest precedence:

Precedence	Operators	Description
1	or	Set union
2	and, unless	Set intersection/diff
3	==, !=, <, <=, >, >=	Comparison
4	+, -	Addition/subtraction
5	*, /, %, atan2	Multiplication/division
6	^	Power (right-associative)

Vector Matching Modifiers

Binary operations between vectors can use matching modifiers:

• on(label, ...) - Match only on specified labels
• ignoring(label, ...) - Match ignoring specified labels
• group_left(label, ...) - Many-to-one matching
• group_right(label, ...) - One-to-many matching
• bool - Return 0/1 instead of filtering (for comparisons)

Examples

use rusty_promql_parser::parser::binary::binary_op;
use rusty_promql_parser::ast::BinaryOp;

let (_, op) = binary_op("+").unwrap();
assert_eq!(op, BinaryOp::Add);

let (_, op) = binary_op("and").unwrap();
assert_eq!(op, BinaryOp::And);

Functions

binary_op

Parse a binary operator