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{"type":"item.completed","item":{"id":"item_0","type":"agent_message","text":"=== BEGIN ARTIFACT FEATURE-Path-Discovery.md ===\n# FEATURE: Path Discovery and Projection\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260822 V1 |\n| Description | Discovers jq paths and constructs projections from path expressions. |\n| Depends On | FEATURE-Destructuring.md, FEATURE-Accessors.md |\n| Provides | path, paths, pick, path projections |\n| Consumes | destructuring and field/index access |\n\n## Questions\n\n- None.\n\n## Scope\n\nImplement exact and generated path expressions, recursive path enumeration, filtered `paths`, and `pick` projections. Path results preserve jq's ordering and use string object keys and numeric array indices. Invalid path expressions raise runtime errors according to jq semantics.\n\n## Programmatic Acceptance\n\n=== AC path-001-conformance ===\nIntent: Path discovery and projection behavior executes successfully for representative path, paths, and pick programs.\nSuite: scoped\nRequires: executable=python3; scope=test\n\nimport subprocess\n\npath_result = subprocess.run(\n [\"./jq\", \"-c\", \"path(.a)\",],\n input='{\"a\":1}\\n',\n capture_output=True,\n text=True,\n)\npaths_result = subprocess.run(\n [\"./jq\", \"-c\", \"paths\",],\n input='{\"a\":1,\"b\":[2]}\\n',\n capture_output=True,\n text=True,\n)\npick_result = subprocess.run(\n [\"./jq\", \"-c\", \"pick(.a)\",],\n input='{\"a\":1,\"b\":2}\\n',\n capture_output=True,\n text=True,\n)\nassert path_result.returncode == 0\nassert path_result.stdout.splitlines() == ['[\"a\"]']\nassert paths_result.returncode == 0\nassert paths_result.stdout.splitlines() == ['[\"a\"]', '[\"b\",0]']\nassert pick_result.returncode == 0\nassert pick_result.stdout.splitlines() == ['{\"a\":1}']\n=== END AC path-001-conformance ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Path enumeration must preserve traversal order and distinguish empty root paths from descendant paths.\n- Projection must not mutate the source value.\n=== END ARTIFACT ===\n\n=== BEGIN ARTIFACT FEATURE-Path-Primitives.md ===\n# FEATURE: Path Access and Mutation Primitives\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260822 V1 |\n| Description | Reads, creates, replaces, and deletes nested values through jq path primitives. |\n| Depends On | FEATURE-Path-Discovery.md |\n| Provides | getpath, setpath, delpaths |\n| Consumes | path discovery and projection |\n\n## Questions\n\n- None.\n\n## Scope\n\nImplement `getpath`, `setpath`, and `delpaths` for nested object and array paths. Operations create intermediate containers where jq requires them, expand arrays with null values, preserve immutable-value semantics, and reject invalid or excessively deep paths with runtime errors.\n\n## Programmatic Acceptance\n\n=== AC path-002-conformance ===\nIntent: Path access and mutation primitives execute successfully for representative getpath, setpath, and delpaths programs.\nSuite: scoped\nRequires: executable=python3; scope=test\n\nimport subprocess\n\nget_result = subprocess.run(\n [\"./jq\", \"-c\", \"getpath([\\\"a\\\", \\\"b\\\"])\",],\n input='{\"a\":{\"b\":3}}\\n',\n capture_output=True,\n text=True,\n)\nset_result = subprocess.run(\n [\"./jq\", \"-c\", \"setpath([\\\"a\\\", \\\"b\\\"]; 4)\",],\n input='{\"a\":{}}\\n',\n capture_output=True,\n text=True,\n)\ndel_result = subprocess.run(\n [\"./jq\", \"-c\", \"delpaths([[\\\"a\\\"]])\",],\n input='{\"a\":1,\"b\":2}\\n',\n capture_output=True,\n text=True,\n)\nassert get_result.returncode == 0\nassert get_result.stdout.splitlines() == [\"3\"]\nassert set_result.returncode == 0\nassert set_result.stdout.splitlines() == ['{\"a\":{\"b\":4}}']\nassert del_result.returncode == 0\nassert del_result.stdout.splitlines() == ['{\"b\":2}']\n=== END AC path-002-conformance ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Path operations must not mutate previously produced values.\n- Invalid path types and excessive depth must remain runtime errors, not compile failures.\n=== END ARTIFACT ===\n\n=== BEGIN ARTIFACT FEATURE-Process-Contract.md ===\n# FEATURE: jq Process Contract\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260822 V1 |\n| Description | Defines jq compilation, runtime failure, success, partial-output, and diagnostic process behavior. |\n| Depends On | FEATURE-Executable-Entry-Point.md |\n| Provides | compile exit 3, runtime exit 5, success exit 0, stderr diagnostics |\n| Consumes | ./jq -c program execution |\n\n## Questions\n\n- None.\n\n## Compile and Runtime Outcomes\n\n| Condition | Exit |\n|---|---:|\n| Program compiles and finishes | `0` |\n| Program is rejected during compilation | `3` |\n| Program compiles and raises during evaluation | `5` |\n\nA compile failure must not be reported as a runtime failure. A runtime failure may occur after values have already been emitted; those values remain observable on stdout. Diagnostics go to stderr and are not part of the value stream.\n\n## Programmatic Acceptance\n\n=== AC exec-002-compile-runtime ===\nIntent: The executable distinguishes compile failures, runtime failures, and successful completion.\nSuite: scoped\nRequires: executable=python3; scope=test\n\nimport subprocess\n\ncompile_result = subprocess.run(\n [\"./jq\", \"-c\", \"{\",],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nruntime_result = subprocess.run(\n [\"./jq\", \"-c\", \"error\"],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nsuccess_result = subprocess.run(\n [\"./jq\", \"-c\", \".\"],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nassert compile_result.returncode == 3\nassert runtime_result.returncode == 5\nassert success_result.returncode == 0\nassert compile_result.stderr != \"\"\nassert runtime_result.stderr != \"\"\n=== END AC exec-002-compile-runtime ===\n\n=== AC exec-002-statuses ===\nIntent: The executable exposes distinct compile, runtime, and successful completion statuses.\n\nimport subprocess\n\ncompile_result = subprocess.run(\n [\"./jq\", \"-c\", \"{\",],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nruntime_result = subprocess.run(\n [\"./jq\", \"-c\", \"error\"],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nsuccess_result = subprocess.run(\n [\"./jq\", \"-c\", \".\"],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nassert compile_result.returncode == 3\nassert runtime_result.returncode == 5\nassert success_result.returncode == 0\n=== END AC exec-002-statuses ===\n\n=== AC exec-002-partial-output ===\nIntent: A runtime failure preserves values emitted before the failure and keeps diagnostics off standard output.\n\nimport subprocess\n\nresult = subprocess.run(\n [\"./jq\", \"-c\", \"1, error\"],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr, file=__import__(\"sys\").stderr)\nassert result.returncode == 5\nassert result.stdout.splitlines() == [\"1\"]\nassert result.stderr != \"\"\n=== END AC exec-002-partial-output ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Compile failures exit `3`.\n- Runtime failures exit `5`.\n- Successful completion exits `0`.\n- Runtime output produced before failure is preserved.\n- Diagnostics are written to stderr only.\n=== END ARTIFACT ===\n\n=== BEGIN ARTIFACT FEATURE-Recursive-Generators.md ===\n# FEATURE: Recursive Generators\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260822 V1 |\n| Description | Provides jq recursive and repeated generator filters. |\n| Depends On | FEATURE-Reductions-and-Iteration-Control.md |\n| Provides | while, until, repeat, recurse, recursive descent |\n| Consumes | reductions and ordered generator evaluation |\n\n## Questions\n\n- None.\n\n## Workflow\n\nThe evaluator supports recursive descent and the `while`, `until`, `repeat`, and `recurse` generators. Recursive filters emit values in jq order, terminate according to their predicates or caught errors, and preserve branching when an update yields multiple values.\n\n## Programmatic Acceptance\n\n=== AC recursive-generators-scoped ===\nIntent: Recursive generator behavior executes successfully for representative while, until, and recurse programs.\nSuite: scoped\n\nimport subprocess\n\nwhile_result = subprocess.run(\n [\"./jq\", \"-c\", \"1 | while(. < 3; . + 1)\",],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nuntil_result = subprocess.run(\n [\"./jq\", \"-c\", \"1 | until(. >= 3; . + 1)\",],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nrecurse_result = subprocess.run(\n [\"./jq\", \"-c\", \"1 | recurse(. < 3; . + 1)\",],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nassert while_result.returncode == 0\nassert until_result.returncode == 0\nassert recurse_result.returncode == 0\nassert while_result.stdout != \"\"\nassert until_result.stdout != \"\"\nassert recurse_result.stdout != \"\"\n=== END AC recursive-generators-scoped ===\n\n=== AC recursive-descent-scoped ===\nIntent: Recursive-descent syntax executes successfully and emits descendants.\nSuite: scoped\n\nimport subprocess\n\nresult = subprocess.run(\n [\"./jq\", \"-c\", \"..\",],\n input='{\"a\":1}\\n',\n capture_output=True,\n text=True,\n)\nlines = result.stdout.splitlines()\nassert result.returncode == 0\nassert len(lines) >= 2\nassert \"1\" in lines\n=== END AC recursive-descent-scoped ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Recursive generators must not emit duplicate or incorrectly ordered values.\n- Termination must not depend on a fixed shallow recursion cutoff.\n- Runtime errors from repeated expressions must remain catchable.\n=== END ARTIFACT ===\n\n=== BEGIN ARTIFACT FEATURE-Reductions-and-Iteration-Control.md ===\n# FEATURE: Reductions and Iteration Control\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260822 V1 |\n| Description | Provides jq reductions and generator control primitives. |\n| Depends On | FEATURE-Labels-and-Breaks.md, FEATURE-Generator-Core.md |\n| Provides | reduce, foreach, limit, skip, first, last, nth, range |\n| Consumes | label and break evaluation, ordered generator evaluation |\n\n## Questions\n\n- None.\n\n## Workflow\n\nThe evaluator implements stateful `reduce` and `foreach` operations, bounded and skipped generator consumption, first/last/nth selection, and range generation. All operations preserve jq stream ordering, multiplicity, cartesian argument behavior, and lexical break handling.\n\n## Programmatic Acceptance\n\n=== AC reductions-scoped ===\nIntent: Reduction and iteration-control behavior executes successfully for representative reduce, foreach, limit, first, and nth programs.\nSuite: scoped\n\nimport subprocess\n\nreduce_result = subprocess.run(\n [\"./jq\", \"-c\", \"reduce range(1; 4) as $x (0; . + $x)\",],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nforeach_result = subprocess.run(\n [\"./jq\", \"-c\", \"foreach range(1; 4) as $x (0; . + $x)\",],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nlimit_result = subprocess.run(\n [\"./jq\", \"-c\", \"limit(2; range(5))\",],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nassert reduce_result.returncode == 0\nassert foreach_result.returncode == 0\nassert limit_result.returncode == 0\nassert reduce_result.stdout != \"\"\nassert foreach_result.stdout != \"\"\nassert limit_result.stdout.splitlines() == [\"0\", \"1\"]\n=== END AC reductions-scoped ===\n\n=== AC range-scoped ===\nIntent: Range generation executes successfully and preserves generated values.\nSuite: scoped\n\nimport subprocess\n\nresult = subprocess.run(\n [\"./jq\", \"-c\", \"range(2; 5)\",],\n input=\"null\\n\",\n capture_output=True,\n text=True,\n)\nlines = result.stdout.splitlines()\nassert result.returncode == 0\nassert lines == [\"2\", \"3\", \"4\"]\nassert len(lines) > 0\n=== END AC range-scoped ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Preserve generator ordering, multiplicity, backtracking, and partial runtime output.\n- Do not implement reductions as scalar-only operations.\n- Negative limits, skips, and nth indices must retain jq runtime-error behavior.\n=== END ARTIFACT ==="}}
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