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{"type":"item.completed","item":{"id":"item_0","type":"agent_message","text":"=== BEGIN ARTIFACT FEATURE-Errors-and-Optional.md ===\n# FEATURE: Errors and Optional Evaluation\n\n| Field       | Value |\n|-------------|-------|\n| Version     | 20260822 V1 |\n| Description | Defines empty streams, runtime errors, exception handling, optional evaluation, and partial output behavior. |\n| Depends On  | FEATURE-Composition.md, FEATURE-Process-Contract.md |\n| Provides    | empty, error, try, catch, and optional filter semantics |\n| Consumes    | ordered jq generator evaluation, compile and runtime exit contract |\n\n## Questions\n\n- None.\n\n## Behavior\n\nThe interpreter shall support filters that produce no values, raise runtime errors, catch errors with `try` and `catch`, and suppress errors with `?`. Values emitted before an uncaught runtime error remain on standard output, and the process exits with status 5.\n\n## Programmatic Acceptance\n\n=== AC core-003-conformance ===\nIntent: The authoritative conformance cases covering empty streams, errors, try/catch, and optional evaluation pass.\nSuite: scoped\nRequires: executable=python3; scope=test\n\nimport json\nimport os\nimport subprocess\nimport sys\n\nselector = r\"try|error|\\?\"\nresult = subprocess.run(\n    [sys.executable, \"sources/run_conformance.py\", \"--select\", selector, \"--json\"],\n    capture_output=True,\n    text=True,\n    env={**os.environ, \"JQ\": f\"{os.getcwd()}/jq\"},\n)\nprint(result.stdout)\nprint(result.stderr, file=sys.stderr)\nreport = json.loads(result.stdout)\nsummary = report[\"summary\"]\nassert sum(summary.values()) > 0\nassert summary[\"fail\"] == 0\nassert summary[\"error\"] == 0\nassert result.returncode == 0\n=== END AC core-003-conformance ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Runtime failures must remain distinct from compile failures.\n- Diagnostics must not replace values emitted before a runtime failure.\n=== END ARTIFACT ===\n=== BEGIN ARTIFACT FEATURE-Truthiness-and-Comparison.md ===\n# FEATURE: Truthiness and Comparison\n\n| Field       | Value |\n|-------------|-------|\n| Version     | 20260822 V1 |\n| Description | Defines jq truthiness, equality, inequality, and structural ordering semantics. |\n| Depends On  | FEATURE-Generator-Core.md, FEATURE-Composition.md |\n| Provides    | jq truthiness, equality, inequality, and ordering |\n| Consumes    | ordered jq generator evaluation, jq value model |\n\n## Questions\n\n- None.\n\n## Behavior\n\nOnly `false` and `null` are falsey. Equality and inequality shall distinguish booleans from numbers, treat numerically equivalent values as equal, compare arrays and objects structurally, and implement jq's ordering across all supported value types.\n\n## Programmatic Acceptance\n\n=== AC core-004-conformance ===\nIntent: The authoritative conformance cases covering truthiness, equality, inequality, and ordering pass.\nSuite: scoped\nRequires: executable=python3; scope=test\n\nimport json\nimport os\nimport subprocess\nimport sys\n\nselector = r\"==|!=|<=|>=|<|>\"\nresult = subprocess.run(\n    [sys.executable, \"sources/run_conformance.py\", \"--select\", selector, \"--json\"],\n    capture_output=True,\n    text=True,\n    env={**os.environ, \"JQ\": f\"{os.getcwd()}/jq\"},\n)\nprint(result.stdout)\nprint(result.stderr, file=sys.stderr)\nreport = json.loads(result.stdout)\nsummary = report[\"summary\"]\nassert sum(summary.values()) > 0\nassert summary[\"fail\"] == 0\nassert summary[\"error\"] == 0\nassert result.returncode == 0\n=== END AC core-004-conformance ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Python truthiness must not be substituted for jq truthiness.\n- Object key order must not affect structural equality.\n=== END ARTIFACT ===\n=== BEGIN ARTIFACT FEATURE-Value-Model.md ===\n# FEATURE: Value Model\n\n| Field       | Value |\n|-------------|-------|\n| Version     | 20260822 V1 |\n| Description | Defines the runtime representation and numeric behavior of jq values. |\n| Depends On  | FEATURE-JSON-I-O.md, FEATURE-Truthiness-and-Comparison.md |\n| Provides    | null, boolean, number, string, array, object, NaN, and infinity values |\n| Consumes    | JSON input stream and compact JSON output |\n\n## Questions\n\n- None.\n\n## Behavior\n\nThe interpreter shall represent all jq JSON value kinds, including non-finite numeric values produced by jq filters. Numeric equality, conversion, preservation, and compact serialization shall follow the supplied jq 1.8.2 behavior.\n\n## Programmatic Acceptance\n\n=== AC value-001-conformance ===\nIntent: The authoritative conformance cases covering NaN, infinity, JSON conversion, and numeric values pass.\nSuite: scoped\nRequires: executable=python3; scope=test\n\nimport json\nimport os\nimport subprocess\nimport sys\n\nselector = r\"nan|infinite|tojson|fromjson\"\nresult = subprocess.run(\n    [sys.executable, \"sources/run_conformance.py\", \"--select\", selector, \"--json\"],\n    capture_output=True,\n    text=True,\n    env={**os.environ, \"JQ\": f\"{os.getcwd()}/jq\"},\n)\nprint(result.stdout)\nprint(result.stderr, file=sys.stderr)\nreport = json.loads(result.stdout)\nsummary = report[\"summary\"]\nassert sum(summary.values()) > 0\nassert summary[\"fail\"] == 0\nassert summary[\"error\"] == 0\nassert result.returncode == 0\n=== END AC value-001-conformance ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- The implementation shall use only Python standard-library facilities.\n- Non-finite values must not cause the process to emit invalid unhandled diagnostics on standard output.\n=== END ARTIFACT ===\n=== BEGIN ARTIFACT FEATURE-Accessors.md ===\n# FEATURE: Accessors\n\n| Field       | Value |\n|-------------|-------|\n| Version     | 20260822 V1 |\n| Description | Defines object-field access, array indexing, dynamic keys, optional access, and negative indices. |\n| Depends On  | FEATURE-Value-Model.md, FEATURE-Generator-Core.md |\n| Provides    | field, index, optional, dynamic-key, and negative-index access |\n| Consumes    | jq value model and ordered jq generator evaluation |\n\n## Questions\n\n- None.\n\n## Behavior\n\nObject fields shall return their value or `null` when absent. Array indexing shall support integer and negative indices, dynamic keys, optional access, and jq-compatible errors for invalid or out-of-range access.\n\n## Programmatic Acceptance\n\n=== AC value-002-conformance ===\nIntent: The authoritative conformance cases covering field access, indexing, optional access, and negative indices pass.\nSuite: scoped\nRequires: executable=python3; scope=test\n\nimport json\nimport os\nimport subprocess\nimport sys\n\nselector = r\"\\.[A-Za-z]|\\[[-0-9]\"\nresult = subprocess.run(\n    [sys.executable, \"sources/run_conformance.py\", \"--select\", selector, \"--json\"],\n    capture_output=True,\n    text=True,\n    env={**os.environ, \"JQ\": f\"{os.getcwd()}/jq\"},\n)\nprint(result.stdout)\nprint(result.stderr, file=sys.stderr)\nreport = json.loads(result.stdout)\nsummary = report[\"summary\"]\nassert sum(summary.values()) > 0\nassert summary[\"fail\"] == 0\nassert summary[\"error\"] == 0\nassert result.returncode == 0\n=== END AC value-002-conformance ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Missing object fields must yield jq's missing-field result rather than a Python exception.\n- Negative array indices must follow jq semantics and must not wrap invalid assignments silently.\n=== END ARTIFACT ===\n=== BEGIN ARTIFACT FEATURE-Slices-and-Iteration.md ===\n# FEATURE: Slices and Iteration\n\n| Field       | Value |\n|-------------|-------|\n| Version     | 20260822 V1 |\n| Description | Defines array and string slicing together with array and object iteration. |\n| Depends On  | FEATURE-Accessors.md |\n| Provides    | array slices, string slices, array iteration, object iteration, and optional iteration |\n| Consumes    | field, index, optional, and negative-index access |\n\n## Questions\n\n- None.\n\n## Behavior\n\nThe interpreter shall support inclusive-exclusive slices over arrays and strings, omitted and negative bounds, fractional bounds, iteration over arrays and object values, optional iteration, and jq-compatible behavior for out-of-range operands.\n\n## Programmatic Acceptance\n\n=== AC value-003-conformance ===\nIntent: The authoritative conformance cases covering slices and array/object iteration pass.\nSuite: scoped\nRequires: executable=python3; scope=test\n\nimport json\nimport os\nimport subprocess\nimport sys\n\nselector = r\"\\[.*:|\\.\\[\\]\"\nresult = subprocess.run(\n    [sys.executable, \"sources/run_conformance.py\", \"--select\", selector, \"--json\"],\n    capture_output=True,\n    text=True,\n    env={**os.environ, \"JQ\": f\"{os.getcwd()}/jq\"},\n)\nprint(result.stdout)\nprint(result.stderr, file=sys.stderr)\nreport = json.loads(result.stdout)\nsummary = report[\"summary\"]\nassert sum(summary.values()) > 0\nassert summary[\"fail\"] == 0\nassert summary[\"error\"] == 0\nassert result.returncode == 0\n=== END AC value-003-conformance ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Iteration must preserve source ordering and generator multiplicity.\n- Optional iteration must suppress the applicable access error without suppressing valid outputs.\n=== END ARTIFACT ==="}}
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