# Evidence: Block 6 · Service (block-6)

- block type: block
- date: 2026-08-22
- resulting state: closed/verified
- story points (combined assembled cost): 25557
- execution id: 20260822.195437.799Z-9e8b87c7

## Stories built
- Implement jq lexical scanning. (PARSE-001) [story]

## Stacked context
- compass: COMPASS.md (SP 3420)
- implements: FEATURE-PARSE-001.md (SP 615)
- context: lexer.l (SP 1137)
- context: parser.y (SP 5596)
- context: jq.test (SP 13058)
- context: ARCHITECTURE_compact.md (SP 154)
- stack: python_compact.md (SP 1534)

## Build directory changes
- jq_interpreter/lexer.py
- jq_interpreter/parser.py
- tests/conftest.py
- tests/test_lexer.py

## Pre-build acceptance observation
- GREEN (prepassed): lexer-conformance (FEATURE-PARSE-001.md)
  intent: The lexer and front end pass the corpus slice containing primitive literals and identity syntax.
  return code: 0
  stdout:
    {
      "candidate": [
        "/mnt/c/Users/barlo/projects/drydock/uat/jq/runs/20260822.044627/build/jq/jq"
      ],
      "corpus": "jq.test",
      "summary": {
        "pass": 7,
        "fail": 0,
        "error": 0,
        "skip": 0
      },
      "cases": []
    }
- GREEN (prepassed): lexer-rejects-invalid-source (FEATURE-PARSE-001.md)
  intent: An invalid lexical character is rejected with the compile-failure status.
  return code: 0
- RED: lexer-comments (FEATURE-PARSE-001.md)
  intent: Comments do not alter evaluation of the surrounding jq program.
  return code: 1
  stderr:
    --- drydock: values at failure ---
      result = CompletedProcess(args=['./jq', '-c', '1 # comment\n'], returncode=3, stdout='', stderr='jq: compile error: unsupported program in foundational parser\n')
    --- drydock: end values ---
    Traceback (most recent call last):
      File "lexer-comments.py", line 10, in <module>
        assert result.returncode == 0
               ^^^^^^^^^^^^^^^^^^^^^^
    AssertionError

## Post-build programmatic acceptance
- PASS: lexer-conformance (FEATURE-PARSE-001.md)
  intent: The lexer and front end pass the corpus slice containing primitive literals and identity syntax.
  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": 7,
        "fail": 0,
        "error": 0,
        "skip": 0
      },
      "cases": []
    }
- PASS: lexer-rejects-invalid-source (FEATURE-PARSE-001.md)
  intent: An invalid lexical character is rejected with the compile-failure status.
  target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3
  provisioning: not required
  return code: 0
- PASS: lexer-comments (FEATURE-PARSE-001.md)
  intent: Comments do not alter evaluation of the surrounding jq program.
  target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3
  provisioning: not required
  return code: 0

## Build summary
RESULT: SUCCESS

FILES CHANGED:
- jq_interpreter/lexer.py
- jq_interpreter/parser.py
- tests/test_lexer.py
- tests/conftest.py

SUMMARY:
Implemented jq lexical scanning for literals, identifiers, fields, bindings, keywords, operators, delimiters, comments, formats, strings, and interpolation. Added parser integration and tests.

Verification: 26 tests passed; lexer conformance 7 passed, 0 failed, 0 errored. Invalid source exits 3; comments evaluate correctly.

BLOCKERS:
- None