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{"type":"item.completed","item":{"id":"item_0","type":"agent_message","text":"=== BEGIN ARTIFACT ARCHITECTURE.md ===\n# ARCHITECTURE: TOML 1.0.0 Parser\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260816 V1 |\n| Description | Standard-library-only Go architecture for a TOML 1.0.0 command-line decoder. |\n| Depends On | — |\n| Provides | cmd/toml-decoder, internal/toml, Go module |\n| Consumes | — |\n\n## Questions\n\n- None.\n\n## Intent\n\nThe project is a Go command-line filter that reads a TOML 1.0.0 document from standard input and emits deterministic tagged JSON. Parsing is implemented in `internal/toml`, while `cmd/toml-decoder` owns process I/O, JSON encoding, diagnostics, and exit status.\n\n## Modules and Boundaries\n\n| Module | Responsibility |\n|---|---|\n| `cmd/toml-decoder` | Read stdin, invoke the parser, encode successful results, and report failures. |\n| `internal/toml` | Parse TOML 1.0.0 syntax and semantics into tagged values and tables. |\n| `go.mod` | Declare the Go module and toolchain floor without third-party dependencies. |\n\nThe command must not read configuration files, access the network, persist data, or modify supplied scoring assets. The parser must use only the Go standard library.\n\n## Tagged Value Model\n\nTables map to JSON objects and arrays map to JSON arrays. Every scalar value is represented as an object containing string-valued `type` and `value` fields. Supported type tags are `string`, `integer`, `float`, `bool`, `datetime`, `datetime-local`, `date-local`, and `time-local`.\n\n## Technology Stack\n\n- Go 1.22 or newer, using `go.md`.\n- POSIX shell for supplied acceptance scripts, using `common.md`.\n\n## Programmatic Acceptance\n\n=== AC architecture-build ===\nIntent: The declared Go module and decoder command compile without third-party module requirements.\n\nimport subprocess\n\nresult = subprocess.run(\n [\"sh\", \"sources/stage_contract.sh\", \"architecture\"],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\n=== END AC architecture-build ===\n\n=== AC architecture-module ===\nIntent: The command package is buildable through the required repository path.\n\nimport subprocess\n\nresult = subprocess.run(\n [\"go\", \"build\", \"./cmd/toml-decoder\"],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\n=== END AC architecture-module ===\n\n=== AC architecture-dependencies ===\nIntent: The module declares no forbidden third-party dependency.\n\nfrom pathlib import Path\n\nmodule_text = Path(\"go.mod\").read_text(encoding=\"utf-8\")\nrequire_lines = [\n line for line in module_text.splitlines()\n if line.lstrip().startswith(\"require \")\n]\nassert not require_lines\n=== END AC architecture-dependencies ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- The parser must not import a third-party TOML library.\n- The `cmd/toml-decoder` build path must remain unchanged.\n- Supplied scoring scripts and harness assets must not be modified.\n=== END ARTIFACT ===\n=== BEGIN ARTIFACT FEATURE-Decoder-Contract.md ===\n# FEATURE: Decoder Contract\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260816 V1 |\n| Description | Defines the stdin, tagged-JSON, diagnostic-stream, and exit-status contract for the TOML decoder. |\n| Depends On | ARCHITECTURE.md |\n| Provides | stdin TOML decoder, tagged JSON stdout, stderr diagnostics |\n| Consumes | internal/toml |\n\n## Questions\n\n- None.\n\n## Workflow\n\nThe executable reads the complete TOML document from standard input and delegates parsing to `internal/toml`. On success it writes exactly one tagged JSON document to standard output and exits zero. On invalid TOML it writes a diagnostic to standard error, writes no successful result to standard output, and exits non-zero. The executable accepts no required arguments and has no runtime configuration.\n\n## Output Contract\n\n- Tables are JSON objects.\n- Arrays are JSON arrays.\n- Every scalar is encoded as `{\"type\": \"<TOML_TYPE>\", \"value\": \"<TOML_VALUE>\"}`.\n- Scalar `value` fields are always JSON strings.\n- Integer values must remain lossless across the signed 64-bit range.\n- Offset and local date/time values use the required TOML type tags and formatting.\n\n## Programmatic Acceptance\n\n=== AC decoder-valid-contract ===\nIntent: A valid TOML document produces the required tagged JSON on stdout with no stderr diagnostic.\n\nimport json\nimport subprocess\n\nsource = \"answer = 42\\n\"\nexpected = {\"answer\": {\"type\": \"integer\", \"value\": \"42\"}}\nresult = subprocess.run(\n [\"./toml-decoder\"],\n input=source,\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\nassert result.stderr == \"\"\nassert json.loads(result.stdout) == expected\n=== END AC decoder-valid-contract ===\n\n=== AC decoder-invalid-contract ===\nIntent: Invalid TOML produces a non-zero exit, no successful stdout result, and a stderr diagnostic.\n\nimport subprocess\n\nsource = \"answer = [\\n\"\nresult = subprocess.run(\n [\"./toml-decoder\"],\n input=source,\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode != 0\nassert result.stdout == \"\"\nassert result.stderr != \"\"\n=== END AC decoder-invalid-contract ===\n\n=== AC decoder-stage-contract ===\nIntent: The supplied decoder contract gate passes in full.\n\nimport subprocess\n\nresult = subprocess.run(\n [\"sh\", \"sources/stage_contract.sh\", \"decoder\"],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\n=== END AC decoder-stage-contract ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Successful JSON is written only to stdout.\n- Diagnostics are written only to stderr.\n- Invalid input must never exit successfully.\n- The executable must not read configuration files or produce runtime side effects.\n=== END ARTIFACT ===\n=== BEGIN ARTIFACT FEATURE-Strings.md ===\n# FEATURE: TOML Strings\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260816 V1 |\n| Description | Defines TOML 1.0.0 basic, literal, multiline basic, and multiline literal string parsing. |\n| Depends On | ARCHITECTURE.md |\n| Provides | TOML string parsing |\n| Consumes | internal/toml |\n\n## Questions\n\n- None.\n\n## Scope\n\nSupport basic and literal strings, multiline delimiters, required escapes, Unicode scalar escapes, newline trimming, line-ending continuation, embedded quotes, preserved whitespace, and prohibited-control validation according to TOML 1.0.0.\n\n## Programmatic Acceptance\n\n=== AC strings-valid-suite ===\nIntent: The authoritative conformance suite passes every valid string case owned by this feature.\n\nimport subprocess\n\nresult = subprocess.run(\n [\"sh\", \"sources/stage_test.sh\", \"valid/string/**\"],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\n=== END AC strings-valid-suite ===\n\n=== AC strings-invalid-suite ===\nIntent: The authoritative conformance suite rejects every invalid string case owned by this feature.\n\nimport subprocess\n\nresult = subprocess.run(\n [\"sh\", \"sources/stage_test.sh\", \"invalid/string/**\"],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\n=== END AC strings-invalid-suite ===\n\n=== AC strings-bounded-suites ===\nIntent: Both string conformance invocations complete successfully as separate executable checks.\n\nimport subprocess\n\npatterns = [\"valid/string/**\", \"invalid/string/**\"]\nfor pattern in patterns:\n result = subprocess.run(\n [\"sh\", \"sources/stage_test.sh\", pattern],\n capture_output=True,\n text=True,\n )\n print(result.stdout)\n print(result.stderr)\n assert result.returncode == 0\n=== END AC strings-bounded-suites ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Basic-string escapes must be decoded only when TOML 1.0.0 permits them.\n- Literal strings must preserve backslashes and reject unescaped delimiters.\n- Multiline strings must enforce delimiter, trimming, continuation, and control-character rules.\n- Invalid UTF-8 and prohibited controls must not be accepted as string content.\n=== END ARTIFACT ===\n=== BEGIN ARTIFACT FEATURE-Lexical-Scalars.md ===\n# FEATURE: Lexical Scalars\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260816 V1 |\n| Description | Defines TOML boolean, integer, and floating-point scalar parsing. |\n| Depends On | ARCHITECTURE.md |\n| Provides | TOML boolean, integer, and float parsing |\n| Consumes | internal/toml |\n\n## Questions\n\n- None.\n\n## Scope\n\nSupport lowercase booleans; signed decimal integers; hexadecimal, octal, and binary integers; underscores; signed 64-bit bounds; decimal fractions and exponents; signed zero; infinity; and NaN. Scalar values must be emitted with the corresponding TOML type tag and a JSON string representation.\n\n## Programmatic Acceptance\n\n=== AC scalars-valid-suite ===\nIntent: The authoritative conformance suite passes all valid boolean, integer, and float cases.\n\nimport subprocess\n\nresult = subprocess.run(\n [\n \"sh\",\n \"sources/stage_test.sh\",\n \"valid/bool/**|valid/integer/**|valid/float/**\",\n ],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\n=== END AC scalars-valid-suite ===\n\n=== AC scalars-invalid-suite ===\nIntent: The authoritative conformance suite rejects all invalid boolean, integer, and float cases.\n\nimport subprocess\n\nresult = subprocess.run(\n [\n \"sh\",\n \"sources/stage_test.sh\",\n \"invalid/bool/**|invalid/integer/**|invalid/float/**\",\n ],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\n=== END AC scalars-invalid-suite ===\n\n=== AC scalars-bounded-suites ===\nIntent: The valid and invalid scalar conformance slices each complete successfully.\n\nimport subprocess\n\npatterns = [\n \"valid/bool/**|valid/integer/**|valid/float/**\",\n \"invalid/bool/**|invalid/integer/**|invalid/float/**\",\n]\nfor pattern in patterns:\n result = subprocess.run(\n [\"sh\", \"sources/stage_test.sh\", pattern],\n capture_output=True,\n text=True,\n )\n print(result.stdout)\n print(result.stderr)\n assert result.returncode == 0\n=== END AC scalars-bounded-suites ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Integer parsing must reject values outside the signed 64-bit range.\n- Integer underscores must satisfy TOML placement rules.\n- Floats must reject malformed decimal points and exponents.\n- Special float tokens must remain lowercase and preserve the required type semantics.\n=== END ARTIFACT ===\n=== BEGIN ARTIFACT FEATURE-Lexical-Boundaries.md ===\n# FEATURE: Lexical Boundaries\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260816 V1 |\n| Description | Defines TOML comment, whitespace, line-ending, encoding, and control-character handling. |\n| Depends On | ARCHITECTURE.md |\n| Provides | TOML lexical boundary validation |\n| Consumes | internal/toml |\n\n## Questions\n\n- None.\n\n## Scope\n\nHandle spaces and tabs, LF and CRLF line endings, comments outside strings, multiline lexical boundaries, valid UTF-8 documents, and rejection of prohibited control characters in comments and applicable value contexts.\n\n## Programmatic Acceptance\n\n=== AC lexical-comments-valid-suite ===\nIntent: The authoritative conformance suite passes every valid comment and lexical-boundary case.\n\nimport subprocess\n\nresult = subprocess.run(\n [\"sh\", \"sources/stage_test.sh\", \"valid/comment/**\"],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\n=== END AC lexical-comments-valid-suite ===\n\n=== AC lexical-boundaries-invalid-suite ===\nIntent: The authoritative conformance suite rejects every invalid control-character and encoding case.\n\nimport subprocess\n\nresult = subprocess.run(\n [\n \"sh\",\n \"sources/stage_test.sh\",\n \"invalid/control/**|invalid/encoding/**\",\n ],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\n=== END AC lexical-boundaries-invalid-suite ===\n\n=== AC lexical-boundaries-suites ===\nIntent: The valid comment and invalid lexical-boundary conformance slices complete successfully.\n\nimport subprocess\n\npatterns = [\n \"valid/comment/**\",\n \"invalid/control/**|invalid/encoding/**\",\n]\nfor pattern in patterns:\n result = subprocess.run(\n [\"sh\", \"sources/stage_test.sh\", pattern],\n capture_output=True,\n text=True,\n )\n print(result.stdout)\n print(result.stderr)\n assert result.returncode == 0\n=== END AC lexical-boundaries-suites ===\n\n## User Acceptance\n\n- None.\n\n## Guardrails\n\n- Comments must not consume content inside strings.\n- Only TOML-permitted whitespace and line endings may be accepted.\n- Invalid UTF-8 must be rejected.\n- Prohibited control characters must be rejected in every applicable lexical context.\n=== END ARTIFACT ==="}}
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