// Phase 218: JsonParser-style if-sum pattern test (SIMPLIFIED)
// Tests: Loop with conditional accumulation using variable-based sum (JsonParser pattern)
// Target: selfhost JsonParser pattern (e.g., sum = sum + digit when digit > 0)
//
// Pattern:
//   Simulate digits: 0, 1, 3, 0, 5
//   Skip zero digits (i=0, i=3)
//   Accumulate valid digits: sum = sum + digit
//   Final sum: 0 + 1 + 3 + 5 = 9
//
// Expected result: 9 (sum of valid digits)

static box JsonIfSumTest {
    sum_digits(data) {
        local sum
        sum = 0
        local i
        i = 0
        local len
        len = 5

        loop(i < len) {
            // Simulate digit extraction: [0, 1, 3, 0, 5]
            // This is simpler than nested-if version
            // For now, just use i itself as digit (JsonParser would do actual string parsing)

            // JsonParser pattern: if digit > 0 { sum = sum + digit }
            if i > 0 {
                // Conditional update: sum = sum + i (simulating: sum = sum + digit)
                sum = sum + i
                print(sum)  // Force if to stay in MIR
            } else {
                print(0)    // Ensure else branch exists
            }

            i = i + 1
        }

        return sum
    }

    main() {
        // Test: sum = 1 + 2 + 3 + 4 = 10
        local result
        result = JsonIfSumTest.sum_digits(0)  // dummy arg
        return result
    }
}