Files
clice/tests/corpus/statements/if/basic_if.cpp
ykiko cc5b25d5c3 refactor: public feature types and snapshot testing infrastructure (#442)
## 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>
2026-05-24 19:36:27 +08:00

37 lines
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C++

// basic if and if-else
namespace basic_if {
int abs_val(int x) {
if(x < 0)
return -x;
return x;
}
const char* sign(int x) {
if(x > 0) {
return "positive";
} else if(x < 0) {
return "negative";
} else {
return "zero";
}
}
// dangling else: else binds to nearest if
int nested_if(int a, int b) {
if(a > 0)
if(b > 0)
return 1;
else
return 2;
return 0;
}
void test() {
[[maybe_unused]] int r1 = abs_val(-3);
[[maybe_unused]] auto r2 = sign(5);
[[maybe_unused]] int r3 = nested_if(1, -1);
}
} // namespace basic_if