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