# Complexity Review Report

**Branch**: feat/rskim-search-foundation -> main
**Date**: 2026-05-10
**PR**: #213

## Issues in Your Changes (BLOCKING)

### CRITICAL
(none)

### HIGH
(none)

## Issues in Code You Touched (Should Fix)
(none)

## Pre-existing Issues (Not Blocking)
(none)

## Suggestions (Lower Confidence)

(none)

## Summary
| Category | CRITICAL | HIGH | MEDIUM | LOW |
|----------|----------|------|--------|-----|
| Blocking | 0 | 0 | 0 | - |
| Should Fix | - | 0 | 0 | - |
| Pre-existing | - | - | 0 | 0 |

**Complexity Score**: 9/10
**Recommendation**: APPROVED

### Rationale

This PR introduces a foundational types/traits module (`types.rs`, 598 lines) and a CLI stub (`search.rs`, 109 lines). From a complexity standpoint, the code is exemplary:

**Function complexity** -- All functions have cyclomatic complexity well under 5:
- `SearchField::name()` (8 arms, exhaustive match) is the highest at ~8, but this is a flat enum dispatch with no nesting or branching -- the idiomatic Rust pattern for this use case.
- `SearchQuery::new()` is a single constructor with no branches.
- `NodeInfo::from_ts_node()` is a trivial struct construction.
- `run()` in `search.rs` has complexity ~3 with a single early return and one fallthrough path.

**Nesting depth** -- Maximum nesting is 1 level (match arms). No deep nesting anywhere.

**File length** -- `types.rs` is 598 lines total, but 284 lines (47%) are tests. Production code is 314 lines: a flat sequence of independent type/trait/error definitions separated by clear section headers. This is the correct shape for a foundational types module and does not warrant splitting.

**Parameter counts** -- All functions have 1-3 parameters. `LayerBuilder::add_file` takes 3 (self, id, content, lang) which is clean.

**Boolean complexity** -- The only boolean expression is `args.is_empty() || args.iter().any(|a| matches!(a.as_str(), "--help" | "-h"))` in the CLI stub, which is straightforward.

**No magic values** -- All constants are self-explanatory string literals in the enum match.

**Test module** -- Tests are simple, focused, and behavior-oriented. No complex setup or teardown. The `SearchResult` construction in tests is the most verbose pattern, but that is inherent to the struct's field count (6 fields), not a complexity issue.
