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{"type":"item.completed","item":{"id":"item_0","type":"agent_message","text":"=== BEGIN ARTIFACT FEATURE-Error-and-Optional-Evaluation.md ===\n# FEATURE: Error and Optional Evaluation\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260822 V1 |\n| Description | Defines jq runtime errors, optional evaluation, suppression, and try/catch behavior. |\n| Depends On | FEATURE-Composition.md |\n| Provides | empty, error, runtime failure, optional operator, try/catch |\n| Consumes | ordered generator evaluation |\n\n## Questions\n\n- None.\n\n## Workflow\n\nRuntime errors propagate with exit status 5 after preserving values already emitted. `empty` emits no values. The optional suffix suppresses errors, while `try ... catch ...` evaluates a handler with the error value.\n\n## Programmatic Acceptance\n\n=== AC core-003-conformance ===\nIntent: The authoritative corpus cases covering errors, optional evaluation, and try/catch execute without failures.\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=== AC core-003-runtime-contract ===\nIntent: Compile errors, runtime errors, and successful execution retain their distinct exit statuses.\nRequires: executable=python3; scope=test\n\nimport subprocess\n\nvalid = subprocess.run(\n [\"./jq\", \"-c\", \".\"],\n input=\"1\\n\",\n capture_output=True,\n text=True,\n)\ncompile_error = subprocess.run(\n [\"./jq\", \"-c\", \"[\"],\n input=\"1\\n\",\n capture_output=True,\n text=True,\n)\nruntime_error = subprocess.run(\n [\"./jq\", \"-c\", \"error\"],\n input=\"1\\n\",\n capture_output=True,\n text=True,\n)\nassert valid.returncode == 0\nassert compile_error.returncode == 3\nassert runtime_error.returncode == 5\n=== END AC core-003-runtime-contract ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Diagnostics are written to stderr and are not used as the behavioral oracle.\n- Partial stdout emitted before a runtime error is preserved.\n- Optional evaluation must not suppress compile-time errors.\n\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 total value ordering. |\n| Depends On | FEATURE-Error-and-Optional-Evaluation.md |\n| Provides | truthiness, equality, inequality, type ordering, comparisons |\n| Consumes | ordered generator evaluation |\n\n## Questions\n\n- None.\n\n## Semantics\n\nOnly `false` and `null` are falsey. Equality is type-aware, with numeric equivalence across integer and floating representations. Ordering follows jq's value ordering across nulls, booleans, numbers, strings, arrays, and objects. Comparison operators preserve generator multiplicity.\n\n## Programmatic Acceptance\n\n=== AC core-004-conformance ===\nIntent: The authoritative corpus comparison and truthiness cases execute without failures.\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=== AC core-004-json-contract ===\nIntent: The runner confirms structural equality and ordering behavior over the supplied corpus.\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)\nreport = json.loads(result.stdout)\nsummary = report[\"summary\"]\nassert isinstance(summary[\"pass\"], int)\nassert summary[\"pass\"] > 0\nassert summary[\"fail\"] == 0\nassert summary[\"error\"] == 0\nassert result.returncode == 0\n=== END AC core-004-json-contract ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Python truthiness must not replace jq truthiness.\n- Boolean values must not compare equal to numbers.\n- Object key insertion order must not affect structural equality.\n\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 internal representation and serialization of jq values, including special numbers. |\n| Depends On | FEATURE-Truthiness-and-Comparison.md |\n| Provides | null, booleans, numbers, strings, arrays, objects, NaN, infinities |\n| Consumes | truthiness, equality, and ordering |\n\n## Questions\n\n- None.\n\n## Value Contract\n\nThe interpreter represents JSON-compatible nulls, booleans, numbers, strings, arrays, and objects using standard-library facilities. Numeric handling preserves literal-aware behavior required by the corpus and supports NaN and infinities where jq exposes them. Serialization emits valid JSON-compatible output for the harness.\n\n## Programmatic Acceptance\n\n=== AC value-001-conformance ===\nIntent: The authoritative corpus special-number and number-serialization cases execute without failures.\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=== AC value-001-special-values ===\nIntent: The implementation accepts and processes the special numeric values exercised by jq.\nRequires: executable=python3; scope=test\n\nimport json\nimport subprocess\n\ninput_value = \"null\\n\"\nresult = subprocess.run(\n [\"./jq\", \"-c\", \"infinite, nan | type\"],\n input=input_value,\n capture_output=True,\n text=True,\n)\nassert result.returncode == 0\nactual = [json.loads(line) for line in result.stdout.splitlines()]\nassert actual == [\"number\", \"number\"]\n=== END AC value-001-special-values ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- No third-party numeric or jq implementation may be used.\n- NaN and infinity handling must remain compatible with the supplied harness.\n- Numeric formatting must not introduce non-JSON output lines.\n\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, optional access, and negative-index behavior. |\n| Depends On | FEATURE-Value-Model.md |\n| Provides | object fields, array indices, optional access, negative indices |\n| Consumes | jq value model |\n\n## Questions\n\n- None.\n\n## Access Semantics\n\nObject fields return the matching value or null when absent. Array indices are zero-based and support negative indices. Invalid access raises a jq runtime error unless the expression is optional, in which case the error is suppressed according to jq semantics.\n\n## Programmatic Acceptance\n\n=== AC value-002-conformance ===\nIntent: The authoritative corpus accessor cases execute without failures.\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=== AC value-002-access-contract ===\nIntent: Field access, negative indexing, and optional access produce the supplied jq behavior.\nRequires: executable=python3; scope=test\n\nimport json\nimport subprocess\n\npayload = '{\"field\":[10,20,30]}\\n'\nresult = subprocess.run(\n [\"./jq\", \"-c\", \".field[-1], .missing?, .field[0]\"],\n input=payload,\n capture_output=True,\n text=True,\n)\nassert result.returncode == 0\nactual = [json.loads(line) for line in result.stdout.splitlines()]\nexpected = [30, None, 10]\nassert actual == expected\n=== END AC value-002-access-contract ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Missing fields yield null rather than Python exceptions.\n- Negative array indices follow jq indexing rules.\n- Optional access suppresses only the applicable runtime access error.\n\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 plus array and object iteration semantics. |\n| Depends On | FEATURE-Accessors.md |\n| Provides | array/string slices, array/object iteration, fractional bounds |\n| Consumes | field and index access |\n\n## Questions\n\n- None.\n\n## Semantics\n\nArray and string slices use inclusive-start and exclusive-end bounds, support omitted and negative bounds, and clamp out-of-range values. Fractional bounds are handled according to jq's numeric rules. Iteration over arrays and objects yields values in the required order, while optional iteration suppresses invalid-container errors.\n\n## Programmatic Acceptance\n\n=== AC value-003-conformance ===\nIntent: The authoritative corpus slice cases execute without failures.\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=== AC value-003-iteration-contract ===\nIntent: Array iteration and slicing preserve output order and bounds.\nRequires: executable=python3; scope=test\n\nimport json\nimport subprocess\n\npayload = '[\"a\",\"b\",\"c\",\"d\"]\\n'\nresult = subprocess.run(\n [\"./jq\", \"-c\", \".[], .[1:3]\"],\n input=payload,\n capture_output=True,\n text=True,\n)\nassert result.returncode == 0\nactual = [json.loads(line) for line in result.stdout.splitlines()]\nexpected = [\"a\", \"b\", \"c\", \"d\", [\"b\", \"c\"]]\nassert actual == expected\n=== END AC value-003-iteration-contract ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Iteration preserves generator order and multiplicity.\n- Slices must not mutate the source value.\n- Out-of-range slices return the jq-compatible empty or clamped result rather than failing unexpectedly.\n\n=== END ARTIFACT ==="}}
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Run artifact