# Evidence: Block 15 · Service (block-15)

- block type: block
- date: 2026-08-22
- resulting state: closed/verified
- story points (combined assembled cost): 51250
- execution id: 20260823.024036.322Z-8ffc2035

## Stories built
- Implement slices and collection iteration. (VALUE-003) [story]

## Stacked context
- compass: COMPASS.md (SP 3420)
- implements: FEATURE-VALUE-003.md (SP 350)
- context: jq-manual.txt (SP 32696)
- context: jq.test (SP 13058)
- context: ARCHITECTURE_compact.md (SP 154)
- stack: python_compact.md (SP 1534)

## Build directory changes
- jq_interpreter/evaluator.py
- tests/test_value_003_slices_iteration.py

## Pre-build acceptance observation
- GREEN (prepassed): value-003-conformance (FEATURE-VALUE-003.md)
  intent: The authoritative corpus cases exercising slices and collection iteration execute successfully.
  return code: 0
  stdout:
    {
      "candidate": [
        "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq"
      ],
      "corpus": "jq.test",
      "summary": {
        "pass": 144,
        "fail": 0,
        "error": 0,
        "skip": 4
      },
      "cases": [
        {
          "line": 1900,
          "program": "import \"a\" as foo; import \"b\" as bar; def fooa: foo::a; [fooa, bar::a, bar::b, foo::a]",
          "status": "skip",
          "detail": "declared in exclusions.txt",
          "expect_failure": false,
          "expected": [
            "[\"a\",\"b\",\"c\",\"a\"]"
          ],
          "actual": []
        },
        {
          "line": 1904,
          "program": "import \"c\" as foo; [foo::a, foo::c]",
          "status": "skip",
          "detail": "declared in exclusions.txt",
          "expect_failure": false,
          "expected": [
            "[0,\"acmehbah\"]"
          ],
          "actual": []
        },
        {
          "line": 1912,
          "program": "import \"data\" as $e; import \"data\" as $d; [$d[].this,$e[].that,$d::d[].this,$e::e[].that]|join(\";\")",
          "status": "skip",
          "detail": "declared in exclusions.txt",
          "expect_failure": false,
          "expected": [
            "\"is a test;is too;is a test;is too\""
          ],
          "actual": []
        },
        {
          "line": 1929,
          "program": "import \"shadow1\" as f; import \"shadow2\" as f; import \"shadow1\" as e; [e::e, f::e]",
          "status": "skip",
          "detail": "declared in exclusions.txt",
          "expect_failure": false,
          "expected": [
            "[2,3]"
          ],
          "actual": []
        }
      ]
    }

## Post-build programmatic acceptance
- PASS: value-003-conformance (FEATURE-VALUE-003.md)
  intent: The authoritative corpus cases exercising slices and collection iteration execute successfully.
  target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3
  provisioning: not required
  return code: 0
  stdout:
    {
      "candidate": [
        "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq"
      ],
      "corpus": "jq.test",
      "summary": {
        "pass": 144,
        "fail": 0,
        "error": 0,
        "skip": 4
      },
      "cases": [
        {
          "line": 1900,
          "program": "import \"a\" as foo; import \"b\" as bar; def fooa: foo::a; [fooa, bar::a, bar::b, foo::a]",
          "status": "skip",
          "detail": "declared in exclusions.txt",
          "expect_failure": false,
          "expected": [
            "[\"a\",\"b\",\"c\",\"a\"]"
          ],
          "actual": []
        },
        {
          "line": 1904,
          "program": "import \"c\" as foo; [foo::a, foo::c]",
          "status": "skip",
          "detail": "declared in exclusions.txt",
          "expect_failure": false,
          "expected": [
            "[0,\"acmehbah\"]"
          ],
          "actual": []
        },
        {
          "line": 1912,
          "program": "import \"data\" as $e; import \"data\" as $d; [$d[].this,$e[].that,$d::d[].this,$e::e[].that]|join(\";\")",
          "status": "skip",
          "detail": "declared in exclusions.txt",
          "expect_failure": false,
          "expected": [
            "\"is a test;is too;is a test;is too\""
          ],
          "actual": []
        },
        {
          "line": 1929,
          "program": "import \"shadow1\" as f; import \"shadow2\" as f; import \"shadow1\" as e; [e::e, f::e]",
          "status": "skip",
          "detail": "declared in exclusions.txt",
          "expect_failure": false,
          "expected": [
            "[2,3]"
          ],
          "actual": []
        }
      ]
    }

## Build summary
Implemented VALUE-003 slices and collection iteration, including fractional bounds, null handling, ordering, multiplicity, and optional iteration.

RESULT: SUCCESS

FILES CHANGED:
- jq_interpreter/evaluator.py
- tests/test_value_003_slices_iteration.py

SUMMARY:
73 tests passed. Scoped conformance: 144 passed, 0 failed, 0 errored, 4 skipped.

BLOCKERS:
- None