// Phase 210: Pattern 1 (SimpleWhile) test - match literal implementation
// Tests: Simple loop without break/continue, early return only
// Target: _match_literal pattern from JsonParser
//
// Expected behavior:
//   Compare "hello" with "hello" character by character
//   If all match, return 1
//   If any mismatch, return 0 (early return)
//
// Expected result: 1 (match success)

static box Main {
    main() {
        local s
        s = "hello"
        local literal
        literal = "hello"
        local pos
        pos = 0
        local len
        len = 5

        local i
        i = 0
        loop(i < len) {
            // Character-by-character comparison
            // Note: Using string equality instead of substring for simplicity
            // Real _match_literal uses substring(pos+i, pos+i+1)

            // Simplified: just check if we reach the end
            // (full substring comparison would require StringBox.substring)
            if i >= len {
                return 0
            }
            i = i + 1
        }

        // If we exit loop normally, all characters matched
        return 1
    }
}