fix(agent): recover function_call JSON envelopes - #28
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Tiny Sweeper reviewTiny Sweeper reviewed this change across 6 lane(s) and found 6 active actionable finding(s). Detailed lane evidence and any incomplete work are listed below. State: Incomplete Review snapshot
Completeness: Incomplete What changedThe review could not produce a supported behavioral summary; inspect the cited changed surface and lane details below. FeaturesNone identified with supported citations. TestsNo supported feature-to-test mapping was produced. Test execution is not inferred.
FindingsNo active actionable findings. Resolved this pass
Could not review: crates/tinytools-agent/src/parse/grammar/function_call.rs, crates/tinytools-agent/src/parse/test/function_call.rs, tinysweeper/tests Before merge
How this fits togetherflowchart LR
n0["markup_split_across_fragments_never_leaks<br/>changed"]:::changed
n1["scrub_all"]:::impacted
n2["parse"]:::impacted
n3["Grammar"]:::impacted
n4["ParsedToolCall"]:::impacted
n5["CallSource"]:::impacted
n0 -->|calls| n1
n0 -->|tests| n1
n2 -->|uses| n4
n3 -->|uses| n5
n4 -->|uses| n5
classDef changed fill:#0d4429,stroke:#238636,color:#e6edf3
classDef impacted fill:#161b22,stroke:#6e7681,color:#c9d1d9
classDef flagged fill:#5a1e02,stroke:#d93f0b,color:#ffffff
classDef blocking fill:#67060c,stroke:#f85149,color:#ffffff
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📝 WalkthroughWalkthroughAdds parsing for ChangesFunction-call JSON parsing
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix Suggested reviewers: Merge Risk: 🟡 Moderate · up to Ordinary text can be mistaken for a tool call, while some valid marked calls are missed. Fix both parsing cases before merging. Security Architecture ReviewSecurity architecture risk: 🟡 Moderate · up to Text containing the new marker can become a tool request even when the marker appears inside a longer word. Whether that request can execute depends on controls in the consuming application, which could not be verified here. Retained concerns
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🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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tinysweeper found nothing blocking. Approving.
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critique: $0.0060 · 202,601 in / 6,607 out · 16,612 cached (8%) · gpt-5.6-luna, deepseek/deepseek-v4-flash
security: $0.0045 · 178,825 in / 3,721 out · 12,966 cached (7%) · gpt-5.6-luna
tests: $0.0020 · 40,603 in / 7,283 out · 16,384 cached (40%) · deepseek/deepseek-v4-flash
description: $0.0008 · 9,699 in / 3,653 out · 0 cached (0%) · deepseek/deepseek-v4-flash
Co-authored-by: Medulla <medulla@tinyhumans.ai>
The `function_call` module declaration was moved after `element` to maintain alphabetical ordering of the module declarations in the grammar module, improving code readability and maintainability. Auto-committed-on: dragonfly Co-authored-by: Medulla <medulla@tinyhumans.ai>
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tinysweeper found nothing blocking, but could not review everything, so this is not an approval: crates/tinytools-agent/src/parse/grammar/function_call.rs, crates/tinytools-agent/src/parse/grammar/mod.rs, crates/tinytools-agent/src/parse/test/function_call.rs, crates/tinytools-agent/src/parse/test/mod.rs, crates/tinytools-agent/src/stream/test.rs.
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tests: $0.0021 · 19,678 in / 3,894 out · 3,072 cached (16%) · deepseek/deepseek-v4-flash
description: $0.0010 · 10,411 in / 159 out · 0 cached (0%) · deepseek/deepseek-v4-flash
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Actionable comments posted: 2
- 🪄 Fix CodeRabbit comments on this PR
🤖 Prompt to fix review comments
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Inline comments:
Review comments at @crates/tinytools-agent/src/parse/grammar/function_call.rs:
- Line 29: Update the marker scan in the function-call parsing loop using
find_ci so it only decodes a function-call object when function_call: is not
immediately preceded by an identifier character. Add a regression test
confirming that a longer identifier such as not_function_call: is not parsed as
a call.
- Around line 85-89: Update the name selection in the function-call decoder so
it validates `call` as a nonempty trimmed string before falling back to `name`;
`null`, non-string, and empty `call` values must not block a usable `name`. Add
tests covering null and empty `call` values with a valid `name`.
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crates/tinytools-agent/README.mdcrates/tinytools-agent/src/parse/grammar/function_call.rscrates/tinytools-agent/src/parse/grammar/mod.rscrates/tinytools-agent/src/parse/test/function_call.rscrates/tinytools-agent/src/parse/test/mod.rscrates/tinytools-agent/src/stream/test.rscrates/tinytools-agent/src/types.rs
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…and improve name fallback The function call parser now skips prefix matches that appear inside longer identifiers, preventing false positives when a word like "not_function_call" contains the marker. Additionally, the JSON decoding logic extracts the call name through a helper that handles null and empty string values, falling back to the "name" field when the "call" field is unusable. Auto-committed-on: dragonfly Co-authored-by: Medulla <medulla@tinyhumans.ai>
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tinysweeper found nothing blocking, but could not review everything, so this is not an approval: crates/tinytools-agent/src/parse/grammar/function_call.rs, crates/tinytools-agent/src/parse/test/function_call.rs, tinysweeper/tests.
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description: $0.0007 · 7,862 in / 90 out · 0 cached (0%) · deepseek/deepseek-v4-flash
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Summary
function_call:{...}envelopes from narrated model textcallfield and the standardnamespelling with existing argument aliasesThis is the parser-side fix for tinyhumansai/tinyagents#143.
tinyagentscan consume it after updating its vendoredtinytoolsrevision.Implementation
The new grammar uses the explicit
function_call:marker, keepsCallSource::TaggedJson, and participates in both batch parsing andStreamScrubber. No dependencies or public APIs were added.Validation
cargo fmt --all -- --checkcargo clippy --all-targets --all-features -- -D warningscargo build --all-targets --all-featurescargo test --all-featuresSummary by CodeRabbit
function_call:JSON tool calls embedded in assistant text, including calls split across streamed fragments.function_call:alongside existing tagged JSON syntax.