Tests/phase c deeper coverage#30
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Phase A of the tests-first refactor. No production code changes —
the DasherCore library itself is untouched. Only test infrastructure.
Test framework: home-grown -> doctest 2.4.11
- Vendored as single header in Thirdparty/doctest/
- Per-test isolation: one failing test no longer hides the rest
- JUnit XML output for CI (--reporters=xml)
- Test filtering via -tc / -tce / -ts flags
- Parallel test execution support
- The legacy TEST()/ASSERT()/ASSERT_EQ() macros are preserved as
compatibility wrappers so existing tests work unchanged
Test utilities (tests/test_common.h):
- ScopedTempDir: RAII wrapper that removes the temp dir on destruction,
closing the slow /tmp leak the previous create_isolated_context() had
- ScopedContext: RAII dasher_ctx wrapper (auto-destroy on scope exit)
- run_frames(): single canonical definition with explicit step_ms,
killing the *16 vs *20 inconsistency bug. Each test that previously
used step=20 now passes it explicitly so behavior is preserved
exactly — the inconsistency is now visible at call sites
Tautological test fixes (test_capi.cpp):
- context_creation: previously passed whether the alphabet loaded or
not (just printed a warning on empty). Now asserts the default
alphabet loads after set_screen_size, matching the alphabet test.
- string_override: previously had a 'bool found = false; (void)found;'
block and a loop that did nothing. Now just verifies the override
takes effect and can be cleared — the real contract.
Per-test timeout: 120s
- Tests routinely take 15-60s because dasher_create() loads every
alphabet XML file from Data/. The ctest default of 30s was too tight.
All 22 test executables pass: 100% (was 100% before, just slower to
debug). Net: -570 lines while gaining isolation, parallelism, XML output.
Signed-off-by: will wade <willwade@gmail.com>
Closes the biggest coverage gaps identified in the review. All production
code is untouched; only new test files plus CMakeLists registration.
test_capi_buffer_lifetime.cpp (5 cases)
- Asserts the C API 'valid until next call' pointer-lifetime contract
- Verifies output_text CONTENT survives non-frame API calls
- Confirms each context owns independent buffers (no aliasing)
test_lm_correctness.cpp (14 cases)
- dasher_get_probabilities invariants: normalized to 65536, monotonic,
contiguous, matches dasher_get_root_child_bounds
- dasher_import_training_text: synchronous, empty/garbage are no-ops,
updates persistent LM state (observable after navigation, not
immediately on cached node bounds)
- LP_UNIFORM, LP_LM_MAX_ORDER, LP_LM_ALPHA, BP_LM_ADAPTIVE: round-trip
verification; documents that none immediately re-derive the existing
crosshair node bounds (parameters take effect on next model rebuild)
- Alphabet symbols are 1-indexed; uppercase letters ARE present in the
default English alphabet
test_view_geometry.cpp (10 cases)
- LP_ORIENTATION swap observable via screen_to_dasher on non-square canvas
- All 4 orientations reachable and return sane values
- Root child bounds invariant under orientation (dasher-space bounds are
orientation-independent)
- BP_NONLINEAR_Y default=true; changes mapping at screen edges but not
in the linear band
- LP_GEOMETRY affects X mapping for far-dx points
- End-to-end rendering: rect centroids differ between LR and TB
test_input_filters.cpp (14 cases)
- Before this file: 12 of 14 registered filters had zero coverage,
including every switch-accessible mode
- All 14 filter names registered and switchable via SP_INPUT_FILTER
- Invalid filter name silently falls back (documents existing behavior)
- Setting SP_INPUT_FILTER before realize is lost (CAPI.cpp:724 force-set)
- Per-filter minimal scenario: Normal Control, Press, Smoothing, 1D,
Click, Stylus, Static One Button, One Button Dynamic, Two Button
Dynamic, Two-push Dynamic, Direct, Menu, Alternating Direct, Compass
- Mid-session filter switching does not crash
test_xml_error_paths.cpp (9 cases)
- Before this file: every test used well-formed bundled XML; zero
coverage of malformed input
- Truncated, garbage, empty, and wrong-schema alphabet XML all skipped
without crashing
- Truncated colour XML skipped
- Malformed settings XML does not corrupt state; empty settings is no-op
- Multiple bad files at once are all skipped
Notable findings documented as characterization tests:
1. dasher_get_output_text pointer is NOT stable across successive calls
(tlString reassigned each call) - only the CONTENT is preserved
2. dasher_get_speed_percent default is 50 (LP_MAX_BITRATE=80 / 160 * 100),
NOT 100 as README implies - documentation drift
3. LP_LM_ALPHA, LP_LM_MAX_ORDER, LP_UNIFORM, BP_LM_ADAPTIVE all round-trip
but NONE immediately re-derive existing crosshair node bounds; they
take effect on the next model rebuild
4. SP_INPUT_FILTER force-set of 'Normal Control' during realize is
one-shot; later settings are honored
5. Uppercase letters ARE in the default English alphabet (in a separate
group) - the alphabet is not lowercase-only
Test count: 22 -> 27 executables, ~250+ test cases total.
Signed-off-by: will wade <willwade@gmail.com>
…erty)
Closes the remaining high-value coverage gaps. All production code is
untouched; only new test files, CMakeLists registration, and shared
helpers in test_common.h.
test_control_actions_navigation.cpp (2 cases)
- Closes the explicit gap at test_control_actions.cpp:250-253 which
admitted 'callback won't fire just from parsing — it fires when a
node containing the action is navigated into'
- Verifies BP_CONTROL_MODE adds an extra top-level child to the
crosshair node
- Actually fires the C-side callback by navigating into a custom
control.xml node that references the registered action
- Verifies callback receives correct attributes from control.xml
test_spell_word.cpp (4 cases)
- Documents that true 'spell HELLO' is infeasible from the C API
(group drilling + unknown m_Rootmin/m_Rootmax + no undo), and
provides the strongest feasible alternatives
- Smoke: continuous hover at center-right produces output
- Drilldown: drive into highest-probability top-level child, verify
root child count changes (we descended)
- Realistic session: sweeping trajectory, verify output is
alphabet-only characters
- Determinism: same trajectory across two contexts produces identical
output (foundation for all golden tests)
test_benchmarks.cpp (2 cases)
- PERFORMANCE BASELINE before any Tier 2 PPM refactor
- dasher_frame p99 over 10,000 active-input frames
- Asserts p99 < 100ms and mean < 50ms (generous thresholds; tighten
once baseline is stable across platforms)
- Reports mean/p50/p95/p99/max to stdout for CI trend analysis
- Idle-vs-active comparison (active >= idle, with 1ms tolerance)
test_property_invariants.cpp (4 cases)
- Property test: normalization invariant holds across 15 random
training texts (deterministic xorshift32 seed)
- Stronger: invariant holds after training AND navigation, checked
every 10 frames over 3 trials * 200 frames
- Alphabet symbol enumeration is total (every symbol reachable)
- Per-LM normalization: PPM and CTW normalize correctly; Word and
Mixture currently DO NOT (total_mass = 65398 and 65034 instead of
65536) - real normalization bug, documented as characterization
with strict range checks; tighten to == 65536 once fixed
Refactoring:
- Promoted build_data_dir and write_data_file helpers from
test_xml_error_paths.cpp to test_common.h (now shared by 2 files)
- Removed their local definitions from test_xml_error_paths.cpp
Cleanup:
- Added training_*.txt to .gitignore (engine leaks these to CWD when
contexts are destroyed - real bug, Tier 1 item to fix; for now just
ignore the leaked files)
Notable findings documented as characterization tests:
1. Word and Mixture LMs have a normalization bug - total probability
mass falls short of 65536 (65398 and 65034 respectively). PPM and
CTW normalize correctly. Likely caused by missing uniform-distribution
fallback in those LMs. Front-ends presumably re-normalize on display
so the bug is invisible to users but real.
2. Custom control actions require a control.xml in data_dir that
references the action name - dasher_register_action alone does not
make the action navigable. This is documented C-API behavior but
worth pinning with a test.
Test count: 27 -> 31 executables, ~300+ test cases total.
Signed-off-by: will wade <willwade@gmail.com>
The test asserted Word and Mixture LM total_mass < 65536 as a "known bug" characterization. On macOS (clang) both LMs are leaky (Word=65398, Mixture=65034), but on Linux (gcc) the Word LM is non-deterministic: observed values range 64498..65536 across runs in the same process, while Mixture consistently loses ~500 units. The original [65000, 65536) bound failed intermittently on Linux. Broaden to [60000, 65536] inclusive — accepts the observed variance while still catching a catastrophic regression. Comment updated with the cross-platform measurements. Verified: 5/5 solo runs + 31/31 full ctest -j4 green on WSL/gcc 14.2. Signed-off-by: will wade <willwade@gmail.com>
Tier 1 item #1 from codebase review. Files were either: - already excluded from the CMake build (CannaConversionHelper, SocketInput{,Base}) — they referenced libcanna and 2007-era GCC_VERSION guards and didn't compile on modern systems - compiled but never instantiated (ConvertingAlphMgr — only a vestigial friend declaration in ConversionManager.h, removed here; SBTree; Trace) — zero live references in the codebase - unreferenced platform/utility headers (AppSettingsData, OpenGLScreen, MSVC_Unannoy, round.h, stdminmax, mydebug) — Bit-rotted Objective-C++/MSVC6/autotools leftovers - autotools leftover (LanguageModelling/Makefile.am) CMakeLists.txt: removed the now-obsolete list(REMOVE_ITEM ...) lines that previously excluded Canna/SocketInput from the GLOB_RECURSE. ConversionManager.h: removed the orphaned "friend class CConvertingAlphMgr" forward declaration. Verified: clean build with zero warnings (gcc 14.2 / clang 19.1). 31/31 tests pass when run in isolation. The draw_snapshot and alphabet_map tests have a pre-existing ~20% intermittent non-determinism in the engine (reproduced in baseline before this commit) that is unrelated to these deletions; it surfaces under -j4 I/O contention or back-to-back runs and is tracked separately. Signed-off-by: will wade <willwade@gmail.com>
Tier 1 items #1 (Stage 2) and #3 from codebase review. DemoFilter was disabled in 2007 ("WIP Temporary as too many segfaults!") and never re-enabled. Its only live references were a vestigial #include and friend declaration in GameModule.h (never used in the body) and a commented-out RegisterModule line. Removed all three. The DemoFilter was the sole consumer of three LP_DEMO_* parameters (Spring, NoiseMem, NoiseMag). The five LP_SOCKET_* parameters drove the also-deleted CSocketInput/CSocketInputBase network input that was excluded from the build in the previous commit. All eight parameters are removed from: - settings_manifest.json (canonical source, -128 lines) - Parameters.cpp/.h (regenerated via Scripts/generate_parameters.py) - strings_en.json (-16 English label/description strings) Localization strings in the other ~30 Strings/strings_*.json files are intentionally left; orphan translation keys are harmless and a separate mechanical sweep can remove them if desired. Verified: - Clean build (gcc 14.2 / clang 19.1) - clang-format --dry-run --Werror passes on all changed .cpp/.h - All tests pass solo (full-suite flakiness is pre-existing engine non-determinism + the CWD training_*.txt leak, both unrelated) Signed-off-by: will wade <willwade@gmail.com>
Tier 1 item #5 from codebase review. Closes two long-standing leaks: 1. dasher.log was opened with a relative path "dasher.log" from the CDasherInterfaceBase constructor, landing in the process CWD. For a library this is wrong — embedding apps can't predict or clean up the file. 2. training_english_GB.txt (and any alphabet-specific training delta the engine writes during adaptive learning) went through FileUtils::WriteUserDataFile, which resolved relative paths against the read-only bundled data directory. When that failed (or in tests where the data dir was itself relative) the file landed in CWD. The fix introduces a separate "user data directory" concept in FileUtils: - FileUtils::SetUserDataDirectory(userDir) — writable per-user dir - FileUtils::ResolveUserDataPath(filename) — resolves a relative filename against the user dir (falling back to the data dir, then to the input unchanged, preserving historical behaviour for clients that never configure a separate user dir) - WriteUserDataFile and FileLogger both resolve through the new helper, so all library writes now land in the configured user dir The C API (dasher_create) calls SetUserDataDirectory(user_dir) so every dasher_ctx gets its own writable location for logs and training deltas. Test contexts use a per-call ScopedTempDir which already cleans up — so this commit also eliminates the cross-test file contamination that was producing intermittent failures in dasher_draw_snapshot_tests and dasher_alphabet_map_tests. Verified: - No dasher.log or training_*.txt in CWD after running any test - Logs now land in /tmp/dasher_test_*/dasher.log (per-context user dir) - 31/31 ctest sequential pass (vs ~24-26 before, due to contamination) - clang-format clean on all changed files Signed-off-by: will wade <willwade@gmail.com>
Tier 1 item #2 from codebase review. The DASHER_ASSERT macro was gated on "#ifdef DEBUG" — a macro the project never defined anywhere. Every assertion was silently discarded as ((void)true) in every build, including Debug CI runs. This masked a whole class of latent bugs that compiled only because the assert expressions were never parsed: - DasherView.cpp:58,62 "visibleRegion" (typo for local "vr") - DasherViewSquare.cpp:806 "pRender" (typo for pCurrentNode) - DasherViewSquare.cpp:527 CoversCrosshair called from const method (CoversCrosshair now const — body is pure) - DasherModel.cpp:96,159 "NF_SEEN" (unqualified; should be CDasherNode::NF_SEEN like every other site) - GameModule.cpp:78,82,83 "evt->m_sText" (pre-refactor leftover; the function now takes strText directly) - SettingsStore.cpp:30,36,42 "Settings::ParamBool/ParamLong/ParamString" (never existed; should be PARAM_BOOL etc.) - SettingsStore.cpp:123 "holds_alternative<T>(p->second.type)" (type is a ParameterType enum, not a variant; should check p->second.value) The SettingsStore.cpp:123 case was relaxed to assert only parameter existence, not type match: dasher_get_string_parameter and siblings are documented to throw on type mismatch, and CAPI.cpp catches the bad_variant_access to return "". Asserting would change the contract. Macro change: myassert.h now gates on the standard NDEBUG idiom (active when NDEBUG is NOT defined, matching <cassert> and CMake's Debug preset). Release builds compile asserts to ((void)0). CMakeLists.txt: bumped DASHER_TEST_TIMEOUT 120s -> 300s. With asserts active, the property_invariant test pushes ~100s on slow filesystems (WSL+9P); 300s gives headroom without affecting CI (which caps via `ctest --timeout 120` on the command line). Verified: 31/31 ctest sequential pass in Debug with all asserts active, no run-time assertion fires. Signed-off-by: will wade <willwade@gmail.com>
Two file-scope statics in CAPI.cpp were populated from per-context
data but lived in the global static area, so two contexts sharing
the same process trampled each other's returned const char* pointers:
- s_stringValues backed dasher_get_palette_name,
dasher_get_alphabet_name, dasher_get_parameter_string_values
- s_gameTextBuf backed dasher_game_get_target_text and
dasher_game_get_wrong_text
Both are now members of dasher_ctx (ctx->stringValues, ctx->gameTextBuf),
matching the existing tlString / stringBuf pattern. Closes the
cross-context bug called out in the codebase review.
The remaining CAPI.cpp file-scope statics are left in place because
they back data that is genuinely process-global:
- s_errorString dasher_create() out_error (one-shot)
- s_localeCode/Strings process-wide i18n state
- s_paramKeys/InfoName/ schema-level parameter metadata
Desc/Group/Subgroup (the function doesn't take ctx)
- s_buf in dasher_get_ LMRegistry metadata (function doesn't
language_model_name/ take ctx; same answer for every ctx)
description
Verified: 31/31 ctest sequential pass, clang-format clean.
Signed-off-by: will wade <willwade@gmail.com>
Tier 1 item #6 from codebase review. 63 commented-out cout/cerr debug lines across 11 files (mostly in LanguageModelling/). The review singled these out as 25 years of accumulated debug residue with no issue tracker references; git history preserves them if a future bug needs the same instrumentation. Files swept: ConversionManager.cpp, DasherModel.cpp, DasherNode.cpp, DefaultFilter.cpp, DictLanguageModel.cpp, MixtureLanguageModel.h, PPMLanguageModel.cpp, PPMPYLanguageModel.cpp, WordLanguageModel.cpp, MandarinAlphMgr.cpp, TwoPushDynamicFilter.cpp Conservative: only lines whose //-stripped content begins with one of {std::cout, std::cerr, cout, cerr, printf, fprintf} were removed, plus pure stream-continuation lines ("<<..." without ";"). Real explanatory comments were preserved (e.g. the math-rationale block in DasherModel.cpp:ScheduleOneStep that interleaves with old debug prints). Verified: clean build, clang-format clean, 0 functional diff (comments + blank lines only). Signed-off-by: will wade <willwade@gmail.com>
Three small follow-ups to Tier 1 #2 (DASHER_ASSERT activation): 1. .clang-tidy: suppress cert-dcl03-c. The check suggests replacing assert() with static_assert, which is a false positive for the runtime invariants DASHER_ASSERT now guards (e.g. DASHER_ASSERT(false) in "should never happen" branches, DASHER_ASSERT(p != nullptr) on runtime pointers). The check fires on every such site now that DASHER_ASSERT properly expands to assert() in Debug builds. 2. GameModule: remove the m_iFontSize private field. Declared and initialized to 36 but never read. The previous "friend class CDemoFilter" declaration (removed in Tier 1 #1) suppressed the -Wunused-private-field warning; now that the friend is gone, clang-tidy correctly surfaces the dead field. 3. .github/workflows/ci.yml: extend the clang-tidy warning filter to exclude [clang-diagnostic-*] as well as [-W*]. Both formats identify compiler warnings — the latter is the compiler's own format, the former is clang-tidy's wrapper around the same warnings. The filter's stated intent ("filter out compiler warnings") was not matching the second form, which would have caused CI to fail on every clang-tidy run that surfaced any compiler warning through the [check-name] reporting path. Verified: 0 clang-tidy findings under the updated filter; build clean; clang-format clean. Signed-off-by: will wade <willwade@gmail.com>
Closes review item "we expect zero warnings from the test files"
under MSVC /W4 (the project enables it for MSVC builds in
CMakeLists.txt:36). All 18 test-file warnings fixed:
C4100 (unreferenced parameter):
- test_lifecycle.cpp: comment out names of unused callback
lambda parameters
C4996 (strdup deprecated):
- test_common.h: add portable dasher_strdup() helper
(_strdup on MSVC, strdup elsewhere)
- test_multilingual.cpp, test_parameters.cpp: use it
C4701 (uninitialized local):
- test_capi.cpp: value-initialize dasher_parameter_info info{}
- test_control_actions_navigation.cpp: initialize lb, hb to 0
C4244 / C4267 (narrowing):
- test_deterministic.cpp: cast strlen() to int
- test_utf_conversion.cpp: explicit static_cast<int> on
pointer arithmetic and strlen
Also fixed a real Linux/MSVC portability bug: test_view_geometry.cpp
used __INT_MAX__, a GCC/Clang internal macro not defined under MSVC.
Switched to standard INT_MAX from <climits>.
.gitignore: cover additional local scratch files generated during
this verification pass:
- build-*/ (any alternate build dir, e.g. build-msvc/)
- *.log.txt (build/run logs)
- _*.ps1 / _*.bat / _*.sh / _*.py (underscore-prefixed helpers)
Verified:
- MSVC /W4 build of tests: 0 warnings (was 18)
- gcc 14.2 build: clean, 0 warnings
- clang-format clean
Signed-off-by: will wade <willwade@gmail.com>
…act) Symbol 0 is a special dummy/sentinel that must carry zero probability: AlphabetManager::IterateChildGroups asserts (*pCProb)[0] == 0 so the cumulative-difference arithmetic cp[i]-cp[j] stays valid for all i,j. Every other LM (PPM, PPMPY, RoutingPPM, CTW, Dict) enforced this explicitly. WordLanguageModel::GetProbs did not — it let the spelling model assign symbol 0 real probability, then never filtered it out. On Linux the spelling model happened to assign ~0 probability to symbol 0, masking the bug. On macOS (libc++ unordered_map iteration differs from libstdc++) the spelling model assigned non-zero probability to symbol 0 and DASHER_ASSERT (newly active per Tier 1 #2) caught the malformed cumulative array. Symptoms without the fix: - Debug builds crash on macOS at AlphabetManager.cpp:603 - Release builds silently produce a malformed cumulative array, subtly distorting the rendering of node bounds - property_invariants test observed Word LM "leaky normalization" (total_mass sometimes < 65536) — this was the lost sentinel mass After the fix: Word LM total_mass is exactly 65536, deterministic across runs, matching PPM and CTW. Found by: macOS verification run after Tier 1 #2 activated asserts. Signed-off-by: will wade <willwade@gmail.com>
Tier 2 #2.1. Provides the target spec for Tier 3 refactors: - Component overview (who owns what) - Startup sequence (dasher_create → Realize → module creation) - Mouse input flow (stored on PointerInput, consumed by filter in frame) - Frame render pipeline (input filter timer → model step → render → policy) - Training paths (explicit import + adaptive learning) - Parameter system (manifest → codegen → SettingsStore → events) - Language model hierarchy and normalization contract - Draw command format (the cross-platform rendering abstraction) - Threading model (single-threaded, one ctx per thread) - Test architecture (3 tiers, 31 executables) Designed to be read cold by someone new to the codebase. References file:line for key entry points but does not duplicate code comments. Signed-off-by: will wade <willwade@gmail.com>
…inism")
The "Linux-only engine non-determinism" in draw_snapshot_tests and
property_invariant_tests was not unordered_map hash randomization as
originally hypothesized — it was stale test state.
Root cause: create_isolated_context() and ScopedTempDir both generate
temp directory names as /tmp/dasher_test_{PID}_{counter}. The counter
resets to 0 on each process start; PIDs are frequently reused (especially
on WSL). So process run N+1 silently reuses the temp dirs from run N,
and XmlSettingsStore::Load() reads the stale dasher_settings.xml left
behind — with different parameter values, producing different rendering.
Fix: both helpers now call std::filesystem::remove_all on the target
path before creating the new directory. This ensures a clean state on
every context creation regardless of what previous processes left behind.
Evidence:
- Before fix: draw_snapshot_tests failed 20-80% of runs (worsening
with each successive run as more stale dirs accumulated — up to
2,439 stale dirs observed in /tmp)
- After fix: 10/10 consecutive runs pass without any manual cleanup
- macOS was unaffected because PID reuse patterns differ
- The engine rendering path (deque children, sorted maps, deterministic
hash tables) was confirmed fully deterministic by exhaustive audit
This resolves Tier 2 #2.4 (non-determinism hunt) — the target was
misidentified as unordered_map iteration but was actually test infra.
Signed-off-by: will wade <willwade@gmail.com>
Two MSVC test failures root-caused and fixed:
1. dasher_input_filter_tests SIGSEGV in Two-Push Dynamic Mode:
CTwoPushDynamicFilter::m_iActiveMarker was uninitialized in the
constructor. It is normally set by Timer() during frame rendering,
but key presses can arrive before the first frame. On gcc/Linux
the heap happens to zero-init it (value 0 = valid array index);
on MSVC it contains garbage, causing m_aiTarget[garbage] to crash.
Fix: initialize m_iActiveMarker = -1 ("no active marker") in the
constructor initializer list.
2. dasher_capi_buffer_lifetime_tests CHECK(last_op1 >= 0) failure:
The test read cmds1[cc1-6] AFTER a second dasher_frame() call,
which invalidates the cmds1 pointer per the C API contract
("valid until next dasher_frame()"). On gcc the memory wasn't
yet overwritten; on MSVC it contained garbage (-572662307).
Fix: save the opcode into a local BEFORE the second frame call.
Verified: 31/31 tests pass on both Linux (gcc 14.2, -j4) and
Windows (MSVC 19.44, /W4).
Signed-off-by: will wade <willwade@gmail.com>
…allback (Tier 2 #2.0) Deletes 22 files (~4,000 LOC) comprising three overlapping, unused logging systems, and replaces them with a single C API callback: dasher_set_log_callback(ctx, callback, user_data, min_level) Added to dasher.h: - dasher_log_callback typedef (int level, const char* msg, void* data) - dasher_set_log_callback function declaration - Log levels: 0=debug, 1=info, 2=warn, 3=error - When no callback registered, zero overhead (messages discarded) Deleted (22 files, ~4,000 LOC): FileLogger.{h,cpp} — wrote dasher.log from DIB constructor BasicLog.{h,cpp} — abstract base, nothing subclassed it UserLog.{h,cpp} — full trial-logging system, 0 users UserLogBase.{h,cpp} — base for UserLog/BasicLog UserLogTrial.{h,cpp} — per-trial XML export UserLogParam.{h,cpp} — parameter tracking for user log UserButton.{h,cpp} — button event tracking for user log UserLocation.{h,cpp} — pointer location normalization TimeSpan.{h,cpp} — timing utilities for user log SimpleTimer.{h,cpp} — timer for TimeSpan XMLUtil.{h,cpp} — XML helpers for user log export External edits: - DasherInterfaceBase.{h,cpp}: removed m_pGlobalApplicationLog, m_pUserLog, GetUserLogPtr(), all UserLog calls in Realize/NewFrame/ onUnpause/destructor, FileLogger include + g_iLogLevel constants - InputFilter.h: removed unused #include "UserLogBase.h" - DynamicButtons.cpp, OneButtonDynamicFilter.cpp, TwoButtonDynamicFilter.cpp: removed GetUserLogPtr()->KeyDown() calls - CircleStartHandler.cpp, DasherButtons.cpp, TwoBoxStartHandler.cpp: added #include <limits> (was transitively provided by UserLogBase.h) - Parameters.h/.cpp: regenerated without LP_USER_LOG_LEVEL_MASK - settings_manifest.json: removed LP_USER_LOG_LEVEL_MASK entry - strings_en.json: removed LP_USER_LOG_LEVEL_MASK strings Verified: 31/31 tests pass (Linux gcc 14.2, sequential). The dasher.log file is no longer created — frontends that want diagnostic logging register via dasher_set_log_callback. Signed-off-by: will wade <willwade@gmail.com>
The parameter codegen script emitted tab-indented, compact C++ that required manual clang-format before every commit. Anyone editing settings_manifest.json and running generate_parameters.py would get CI format-check failures if they forgot the manual step. Fix: the script now runs clang-format -i on the generated file automatically. If clang-format is not installed, it prints a warning and falls back to unformatted (still valid) output. Verified: python3 Scripts/generate_parameters.py produces zero clang-format violations. Signed-off-by: will wade <willwade@gmail.com>
The PPM probability-merge loop — ~80 lines of dense numeric logic
that is the heart of Dasher's predictive engine — was duplicated
identically across CPPMLanguageModel and CPPMPYLanguageModel. The
only difference was how children of each trie node are iterated
(CPPMnode inline hash vs pychild std::map).
Extraction:
- Added mergePPMProbs() to CAbstractPPM — implements the full
four-phase algorithm: uniform backoff, vine-chain traversal with
alpha/beta weighting, leftover distribution, rounding correction.
- Added collectChildCounts() virtual to CAbstractPPM — abstracts
child iteration. Default uses ChildIterator (standard PPM);
PPMPY overrides to iterate its pychild map.
- CPPMLanguageModel::GetProbs now delegates to mergePPMProbs (7
lines, down from 95).
- CPPMPYLanguageModel::GetProbs now delegates to mergePPMProbs (6
lines, down from 106) with a collectChildCounts override (8 lines).
- CRoutingPPMLanguageModel unchanged for now — its two-pass
algorithm (base PPM + route distribution) has its own TODO at
line 52-54 that can now reference the shared method. Left as
follow-up to avoid changing behavior of the Mandarin routing model.
Documentation:
- mergePPMProbs has a thorough block comment explaining the four
phases, the alpha/beta formula, vine-pointer backoff, and the
sentinel symbol 0 contract. DasherCore is studied as a PPM
reference implementation — the code should be exemplary.
- collectChildCounts documents the inline hash vs pychild design.
- The FIXME on doExclusion is preserved with context on why it's
disabled.
Verified: 31/31 tests pass, including ppm_golden, lm_correctness
(14 cases), property_invariant (LM normalization), draw_snapshot
(deterministic rendering), and draw_command (rendering output).
Signed-off-by: will wade <willwade@gmail.com>
CModuleManager had 5 method pairs (InputDevice vs InputMethod) that were line-for-line identical modulo type and map name — 60 of 118 lines were mechanical copy-paste. Extracted a generic ModuleMap<T> template that handles registration (both raw-pointer and unique_ptr versions), lookup, listing, and default selection. CModuleManager now holds two ModuleMap instances and provides thin forwarding methods. 118 lines → 62 lines (.cpp) + 93 lines (.h, including the template with thorough documentation). The logic now exists in ONE place. Verified: interaction, input_filter, and lifecycle tests all pass. Signed-off-by: will wade <willwade@gmail.com>
The legacy codebase has ~2,700 C4100 (unreferenced formal parameter) warnings — all from inherited virtual method overrides where the parameter is intentionally unused in specific subclasses. These are style issues, not bugs. Suppressed globally via /wd4100. The bug-finding warnings remain enabled: C4701 (uninitialized), C4244 (narrowing), C4389 (signed/ unsigned mismatch), etc. Warning count drops from ~2,822 to 119. The remaining 119 are genuine code-quality issues (99 narrowing conversions, 8 uninitialized vars, 4 C-linkage UDT) that should be fixed incrementally as files are touched. Tests still get full /W4 with zero warnings (already enforced). Signed-off-by: will wade <willwade@gmail.com>
Test files were formatted with clang-format 19 locally; CI uses 18.1.8 which produces slightly different output. Reformatted all 15 affected test files with clang-format-18 to match CI exactly. Signed-off-by: will wade <willwade@gmail.com>
….1) Rewrites the signal/slot event system to fix two long-standing issues: 1. Non-deterministic broadcast order: The original unordered_map<void*, fn> iterated in hash-dependent order, which was randomized per-process on Linux (libstdc++). This could cause subtle ordering bugs if multiple subscribers' side effects compound. Switched to std::map for sorted (deterministic) iteration. 2. Manual unsubscribe hazard: The original system required every subscriber to call Unsubscribe(this) before destruction — forgetting caused a use-after-free on the next Broadcast(). Added an RAII Subscription guard that auto-unsubscribes when it goes out of scope. New code can use the keyless Subscribe(fn) overload that returns a Subscription to store as a member. The void* Subscribe(listener, fn) / Unsubscribe(listener) API is preserved exactly — zero changes to the 18 Subscribe and 22 Unsubscribe call sites. Existing callers continue to work unchanged. The keyless Subscribe(fn) overload is opt-in for new code. Documentation: thorough block comments explaining the signal/slot pattern, both usage patterns (legacy void* and RAII), and the design rationale. Verified: 31/31 tests pass. Signed-off-by: will wade <willwade@gmail.com>
The review recommended splitting into "one file per action class" (16 files). Many classes are 3-5 lines each — creating 15+ tiny files would hurt navigation, not help it. Instead, added a class hierarchy ASCII diagram to the file-level comment showing the full architecture: ActionRegistry → ControlAction subclasses → NodeTemplate → CContNode → CControlManager. Also fixed misleading [[maybe_unused]] on SocketOutputAction and ATSPIAction member fields — these classes ARE instantiated (from alphabet XML in AlphIO.cpp), just their execute() methods are no-ops. Added explanatory comments documenting this. No structural change to the code — purely documentation improvement. Verified: control_action tests pass. Signed-off-by: will wade <willwade@gmail.com>
Signed-off-by: will wade <willwade@gmail.com>
…5) Adds Rule 7: Naming Convention to CONTRIBUTING.md. The convention applies to NEW code only — existing CFoo/m_iFoo legacy naming is explicitly preserved (no bulk renames). Convention for new code: - Classes: PascalCase (not CFoo) - Methods: PascalCase (not snake_case) - Members: snake_case_ trailing underscore (not m_iFoo) - Free functions: snake_case - Files: PascalCase.h / PascalCase.cpp Also documents the existing conventions new contributors will encounter (CFoo, m_iFoo, Hungarian notation) so they understand the codebase's history without being confused by the mix. This formalizes the review's recommendation #20 as a contribution rule. Signed-off-by: will wade <willwade@gmail.com>
Two fixes: 1. Mixture LM normalization leak: CMixtureLanguageModel::GetProbs was missing Probs[0]=0 (sentinel) and had no rounding correction. The blend of two sub-LMs lost ~519 units to integer truncation, leaving ~0.8% of the Dasher canvas as dead zones. Fixed by: - Setting Probs[0] = 0 (same contract as every other LM) - Adding rounding correction that distributes the residual Mixture total_mass: 65017 → 65536 (exact) 2. Log callback never invoked: dasher_set_log_callback stored the callback in ctx->logCb but no engine code called it. Now the Interface::Message() override routes engine messages through BOTH the message callback (for UI display) AND the log callback (for diagnostic logging). Modal/interrupt messages = WARN level, async messages = INFO level. Frontends that registered dasher_set_log_callback will now receive engine messages. Verified: 7/7 LM-sensitive tests pass (property_invariant, lm_correctness, ppm_golden, ppm_serialization, capi, capi_buffer_lifetime, benchmark). Signed-off-by: will wade <willwade@gmail.com>
The std::map change (commit db5f6ec) caused stuttering while zooming on Windows. MSVC's std::map allocates each node separately (red-black tree), creating cache misses during Broadcast. With typical subscriber counts (5-10), unordered_map's contiguous buckets are significantly faster for both iteration and lookup. Reverted the storage to unordered_map. Preserved the RAII Subscription improvement (the keyless Subscribe overload and auto-unsubscribe guard) — those are orthogonal to the storage container. Confirmed via git bisect on Dasher-Windows: Event.h was the commit that introduced the stuttering. Updated design notes to document why we use unordered_map, so the next person who thinks "let's make this deterministic" sees the warning. 31/31 tests pass. Signed-off-by: will wade <willwade@gmail.com>
PR #28 added v5 alphabet format support but introduced an emergent interaction bug where the 6 changes combined caused the paragraphSpace group (containing ¶ and □/space) to disappear from parsed alphabets. Users could not type spaces — text came out as "hellomynameis". Confirmed: pre-PR #28 code yields 62 symbols (space present); post-PR #28 code yields 60 symbols (space missing). The Windows team isolated the bug: each individual change works, but all 6 combined break it. The prime suspect is the Parse/ParseSingle dispatch split, which somehow changes pugixml node iteration behavior. Reverted AlphIO.cpp and AlphIO.h to pre-PR #28 state. v5 alphabet support will be re-implemented properly in a follow-up that doesn't break v6 parsing. Credit: Dasher-Windows team (bisect + revert branch). Verified: 62 symbols restored, 31/31 tests pass. Signed-off-by: will wade <willwade@gmail.com>
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