## Summary
- **Public feature types**: Move `SemanticToken`, `FoldingRange`,
`DocumentSymbol`, `InlayHint`, and `HintCategory` from internal `.cpp`
files to `feature.h` as public API types. Each feature now exposes two
overloads: a raw overload returning offset-based types and a protocol
overload that converts to LSP wire-format with explicit
`PositionEncoding`.
- **Snapshot testing**: Add corpus-driven snapshot tests using
`ASSERT_SNAPSHOT_GLOB` for semantic tokens, folding ranges, inlay hints,
document symbols, and TU index. Tests compile real C++ corpus files,
format output as YAML flow mappings, and diff against `.snap.yml`
baselines.
- **Test infrastructure**: Add `compile_file()` to `Tester`,
`yaml_str()` utility, `--corpus-dir` / `--snapshot-dir` CLI options, and
`--verbose` flag for unit tests. Migrate to kotatsu's unified
`kota::zest::Options` API.
- **Toolchain robustness**: Filter unknown cc1 args via
`clang::driver::getDriverOptTable()` to handle system compilers newer
than embedded LLVM.
- **Dependency bump**: Update kotatsu to 7381404 (unified zest Options,
out-param `from_json` API).
## Details
### Feature type changes
All five feature modules (`semantic_tokens`, `folding_ranges`,
`document_symbols`, `inlay_hints`, `document_links`) now follow the same
two-overload pattern. The raw overload returns offset-based structs
suitable for indexing and testing; the protocol overload adds
`PositionEncoding` conversion for LSP responses. `stateful_worker.cpp`
explicitly passes `PositionEncoding::UTF16` at every call site.
### Snapshot tests
Corpus files live in `tests/corpus/` (organized by language construct).
Snapshot baselines live in `tests/snapshots/<feature>/`. Format lambdas
are inlined directly in test bodies — no separate format functions for
single-use formatters. YAML output uses flow mappings (`- { key: value
}`) for compact, diffable baselines.
### cc1 arg filtering
`src/command/toolchain.cpp` now parses the cc1 argument list through
LLVM's driver option table and drops any args classified as
`UnknownClass`. This prevents compilation failures when the system
compiler emits flags that the embedded LLVM version doesn't recognize.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
## Summary
- Add `add_module()` and `compile_with_modules()` to the `Tester` test
framework
- Supports both separate `add_module()` calls and single-string
`#[filename]` syntax via `add_files()`
- Automatically scans module dependencies with `scan_precise`,
topologically sorts, builds PCMs in order, then compiles the main file
- Temporary PCM files cleaned up automatically in destructor
- Migrated `ModuleImport` and `ModuleReexport` semantic tokens tests to
use the new API
## Test plan
- [x] All 505 unit tests pass
- [x] All 113 integration tests pass
- [x] All 2 smoke tests pass
🤖 Generated with [Claude Code](https://claude.com/claude-code)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Tests**
* Centralized, module-aware test compilation with automatic module
discovery, dependency ordering, and cycle detection.
* Unified "compile with modules" flow; tests now add module sources
directly and no longer manage temporary module artifacts manually.
* Reduced duplicated compile/diagnostic logic and improved cleanup of
generated artifacts.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
## Summary
- Replace flat `CompilationContext { directory, arguments }` with a
three-layer abstraction: `ResolvedFlags` (file-independent flags) →
`CompileCommand` (+ source file) → `to_argv()` (full argv on demand)
- `ResolvedFlags.flags` never contains source file path or
`-main-file-name`, making it directly usable as a clean cache key input
(e.g. PCH sharing across files with identical preambles)
- `to_argv()` handles `-main-file-name` insertion for cc1 mode
automatically — consumers no longer need to search/replace in the
argument list
- Eliminates the pollute-then-clean anti-pattern in `lookup()` and the
manual source-file replacement in `fill_header_context_args()`
## Test plan
- [x] `pixi run format` — no changes
- [x] `pixi run unit-test` — 481 passed
- [x] `pixi run integration-test` — 113 passed
🤖 Generated with [Claude Code](https://claude.com/claude-code)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Refactor**
* Unified compile-command handling across the server and tools for more
consistent argument and flag behavior (driver vs frontend modes).
* **New Features**
* Added an LRU-backed in-memory cache to improve performance and
eviction control.
* **Chores**
* Added an option to control injection of resource-directory flags
(enabled by default).
* **Tests**
* Updated unit and integration tests to adopt the new command
representation and verify cache behavior.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
## Summary
- **Use `Tester` as fixture base** for all test suites that need
compilation, replacing `TesterFixture` and removing redundant
`tester.clear()` calls (eventide zest now creates fresh instances per
TEST_CASE)
- **Remove local `Tester` variables** in `compilation_tests`,
`template_resolver_tests`, `selection_tests` — use inherited fixture
members directly
- **Normalize helper naming**: `expect_xxx` → `EXPECT_XXX`,
`go_to_definition` → `GO_TO_DEFINITION` for consistency
- **Extract shared `test/cdb_helper.h`**: deduplicate `CDBEntry`,
`json_escape`, `build_cdb_json` from `dependency_graph_tests` and
`compile_graph_integration_tests`
- **Add new test files/cases**: `project_index_tests.cpp`, expanded
`tu_index_tests`, `merged_index_tests`, `compilation_tests`
## Test plan
- [x] All existing unit tests pass
- [x] New index tests (TUIndex, MergedIndex, ProjectIndex) pass
- [x] Compilation tests (PCH, PCM, stop) pass
🤖 Generated with [Claude Code](https://claude.com/claude-code)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Tests**
* Standardized test fixtures and helper naming, moved suites to a shared
fixture, and unified in-memory VFS and compile flows.
* Added broad new coverage: indexing, project indexing, compilation/PCH,
diagnostics, semantic features, and many targeted unit cases.
* Introduced a small compile-database helper and improved driver-style
test compilation paths.
* **Chores**
* Consolidated and reorganized test utilities and tester APIs for easier
maintenance and reuse.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
