refactor(runtime): split value/to_string.rs under the file-size cap - #11088
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📝 WalkthroughWalkthroughThe runtime string-conversion helpers are split across primitive, array, and radix modules. Module exports and direct caller paths are updated. The changelog reports matching exported C-ABI symbol sets before and after. ChangesRuntime string conversion
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Refactor Merge Risk: 🟡 Moderate · up to The raw-handle gate rejects this relocation. Add the annotation before merging. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 77.50% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 40 functions across 8 files. (4 skipped: 4 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
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to_string.rs sat one line under the 2000-line lint cap, blocking any PR that added even a couple of lines to it. Split the ToPrimitive engine, Array.prototype.toString handling, and radix stringification into three sibling files (to_string_primitive.rs, to_string_array.rs, to_string_radix.rs). Pure move: no renamed public items, no behavior change; exported C-ABI symbol set verified identical against a pristine origin/main build.
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Amended: the split left I caught it when this PR went into merge train 261 and reproduced it locally with the gate's own command. Fix is the import moved under the same Re-verified both ways on the amended head:
Worth noting for next time: |
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A file-cap split relocates code, and four ratchets key their entries by
file path, so each one goes red on the NEW path while its old entry
stops matching. All four are identity-pinned deliberately, so a fix has
to move its own entry rather than add one:
- addr_class_ratchet_baseline.txt: handle-floor (3) and
lone-valid-obj-ptr (1) moved wholesale to to_string_primitive.rs
- addr_class_allowlist.txt: the gcheader-cast probe now exists in both
files, so to_string_primitive.rs needs its own line
- raw_handle_debt_files.txt: the single debt site moved, and the old
ceiling then 'matches nothing', which is itself a failure
- gc_runtime_root_holders.json: TO_PRIMITIVE_DEPTH moved;
SKIP_TO_PRIMITIVE_ONESHOT did NOT, and repointing it was wrong
Verified after the move:
addr_class_inventory.py passed (505 known sites held)
raw_handle_debt.py 901 sites (baseline 901), 104 modules within ceilings
gc_runtime_root_holders.py OK, self-test OK
string_payload_access_inventory.py 4062 files, ratchet held
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Inline comments:
In `@scripts/raw_handle_debt_files.txt`:
- Line 165: Add the required moved-from relocation annotation to the
to_string_primitive.rs debt entry, referencing the prior to_string.rs path so
the raw-handle gate credits the transferred site.
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crates/perry-runtime/src/value/to_string.rsscripts/addr_class_allowlist.txtscripts/addr_class_ratchet_baseline.txtscripts/gc_runtime_root_holders.jsonscripts/raw_handle_debt_files.txt
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- crates/perry-runtime/src/value/to_string.rs
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raw_handle_debt.py runs TWICE in lint. Repointing the ceiling satisfies
the per-module rule but not the merge-base rule, which sees a ceiling on
a path that was not listed at the base and calls it a raise:
crates/perry-runtime/src/value/to_string_primitive.rs:
ceiling raised to 1 (was not listed at the merge base)
#10583 added the mechanism for exactly this case — the 2000-line cap
forcing a listed module to be split — and it must be declared on the
destination line, because an undeclared move is indistinguishable from
laundering new debt through a relocation.
raw_handle_debt.py 901 sites (baseline 901), 104 ceilings
raw_handle_debt.py --no-raise-vs origin/main
901 -> 901, none raised, 1 declared relocation:
value/to_string.rs -> value/to_string_primitive.rs
unrooted_local_shape.py --no-raise-vs origin/main 390 -> 390, none raised
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Summary
crates/perry-runtime/src/value/to_string.rssat one line under the hard2000-line CI cap (
scripts/check_file_size.sh, a requiredlintstep),which meant any PR that added even two lines to it got blocked outright —
that just happened to PR #10995.
Split it into four files under
crates/perry-runtime/src/value/, followingthe repo's existing sibling-module convention (
to_string_class_ref.rswasalready split out this way):
to_string.rs— 2000 → 634 lines. Kept: thejs_jsvalue_to_stringdispatcher and its direct siblings (
js_jsvalue_to_string_method,js_jsvalue_to_string_coerce,js_ensure_string_ptr,js_value_to_str_ptr_for_ffi).to_string_primitive.rs(new, 767 lines) —OrdinaryToPrimitive/ToPrimitiveresolution for objects, functions, and exotic (Date/RegExp)own-property overrides.
to_string_array.rs(new, 196 lines) —Array.prototype.toStringresolution (the reflective-override check plus the explicit method-call
path).
to_string_radix.rs(new, 435 lines) — radix-based number/BigIntstringification (
Number.prototype.toString(radix),BigInt.prototype.toString(radix),DoubleToRadixCString), including itsexisting
#[cfg(test)]module.This is a pure move: no renamed public items, no behavior changes.
Items that crossed a file boundary got the minimum visibility bump
(private →
pub(crate)) the split required. Three call sites that reachedinto
to_string's submodule path directly(
crates/perry-runtime/src/temporal/options.rs,crates/perry-runtime/src/value/dynamic_arith.rs,crates/perry-runtime/src/value/to_string_class_ref.rs) were repointed atthe item's new home instead of being routed through a forwarding
re-export;
value/mod.rs's existingpub(crate) use/pub useblocks wereupdated to source the moved items from their new module.
Verification
bash scripts/check_file_size.sh→OK: no Rust source files exceed 2000 lines.cargo fmt --all -- --check→ clean.cargo check -p perry-runtime→ clean.cargo check -p perry-runtime --all-targets→ clean (no warnings).RUST_TEST_THREADS=1 cargo test --lib -p perry-runtime value::to_string→ all 6 tests pass in their new locations (to_string::error_subclass_tostring_tests,to_string_buffer_tests,to_string_radix::radix_tostring_tests×4).Exported-symbol diff: built
libperry_runtime.rlibon this branch and on a pristineorigin/maincheckout, extracted the exported symbol sets withnm -g ... | grep ' T ' | awk '{print $NF}' | sort -u, then filtered both lists to the non-Rust-mangled (C-ABI) subset (grep -v '^__R\|^_R\|^__Z\|^_Z') since the raw list also includes Rust v0-mangled monomorphizations whose names legitimately embed the defining module path (e.g. genericRuntimeHandle::with_mut_ptr::<..>instantiations, thread-localtry_withclosures) and are not part of any linkage contract.Result: 3196 C-ABI symbols on each side, diff is empty. All six
#[no_mangle]symbols that live in this file group are present and unchanged on both sides:Test plan
bash scripts/check_file_size.shcargo fmt --all -- --checkcargo check -p perry-runtimecargo check -p perry-runtime --all-targetsRUST_TEST_THREADS=1 cargo test --lib -p perry-runtime value::to_stringorigin/main(empty)Summary by CodeRabbit