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mob_new

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Project generator for the Mob mobile framework

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CHANGELOG.md 

# Changelog



All notable changes to **mob_new** (the project generator for Mob) are documented here.



Format: [Keep a Changelog](https://keepachangelog.com/en/1.1.0/). Versioning: [SemVer](https://semver.org/spec/v2.0.0.html).



Full module documentation: [hexdocs.pm/mob_new](https://hexdocs.pm/mob_new).



---



## [0.3.5]



### Fixed

- `beam_jni.c.eex`: restored the closing `}` for `nativeDeliverVendorUsbEvent`. Without it, clang sees nested function definitions and rejects every `JNIEXPORT` that follows ("function definition is not allowed here") — C compilation fails immediately on any project generated from 0.3.3/0.3.4.

- `MobBridge.kt.eex`: removed three duplicate imports (`IntentFilter`, `ConcurrentHashMap`, `AtomicInteger`). Each now appears exactly once in the alphabetised bottom-of-file import block. kotlinc was rejecting with "Conflicting import" so `gradleDebug` failed on any project generated from 0.3.3/0.3.4.

- `beam_jni.c.eex`: removed a 276-line duplicate Bluetooth Classic JNI block (lines 533-808 mirrored 256-531 verbatim). Caused "redefinition of `Java_..._MobBridge_nativeDeliverBt*`" errors at compile time. The canonical first block stays. (Surfaced by the new `clang -fsyntax-only` test below — string-match generator-test assertions still passed because the substrings exist, just twice.)



All three regressions were introduced by the 0.3.3 BT-PR merge taking the union of imports / blocks during conflict resolution, when the 0.3.2 fix had specifically de-duplicated them. Reported by external user on master 2026-05-17.



### Added

- `MobNew.Templates.Lint` — module of structural lints for generator-rendered native source files. 8 checks: `balanced_braces`, `balanced_parens`, `balanced_brackets`, `no_eex_leaks`, `unique_kotlin_imports`, `unique_swift_imports`, `external_fun_jni_consistency`, plus `check_kotlin/1` / `check_c/1` / `check_swift/1` aggregate functions. Returns a list of issue maps; empty list = clean. 25 unit tests cover each check red-then-green.

- Generator tests now use `Lint.check_kotlin/1` and `Lint.check_c/1` instead of inline brace-counting + import-dedup logic. Single source of truth; clearer failure messages.

- New cross-file consistency test: asserts every `external fun nativeFoo(...)` in MobBridge.kt has a matching `Java_..._MobBridge_nativeFoo(...)` JNI thunk in beam_jni.c. Catches "added the Kotlin side but forgot the C thunk" (or the reverse).

- New `clang -fsyntax-only` test (`@tag :requires_android_ndk`) that invokes the NDK's clang against the rendered `beam_jni.c`. Catches the full class of "actually broken C" — typos, wrong arg counts, duplicate definitions — that tier-1 structural lints can miss. Skips cleanly when the Android NDK isn't installed (mirrors the existing `:requires_zig` pattern).



## [0.3.4]



### Added

- `CLAUDE.md` "Release flow" section pointing at the canonical process

  in [`mob/RELEASE.md`](https://github.com/GenericJam/mob/blob/master/RELEASE.md)

  (URL form so it resolves without a local mob checkout). mob_new

  specifics: generator tests need `MOB_DIR=/Users/kevin/code/mob` set

  when running from a worktree (the resolver looks for `mob` alongside

  the project and the worktree path breaks that assumption).

- `.githooks/pre-push` — same script shipped in mob (cheap preflight

  always, release preflight when `mix.exs` changed). Activate per

  clone or worktree with `git config core.hooksPath .githooks`.



## [0.3.3]



### Added

- Bluetooth Classic peripheral codegen (`MobBridge.kt.eex`, `beam_jni.c.eex`, `AndroidManifest.xml.eex`) — generated apps now include the Kotlin BroadcastReceivers, JNI native_* externs, and Android permissions for the `Mob.Bt` runtime API (HFP / SPP / HID). Companion to `mob` 0.6.5's `Mob.Bt` module. Contributed by [@HeroesLament](https://github.com/HeroesLament) ([#4](https://github.com/GenericJam/mob_new/pull/4)).



## [0.3.2]



### Fixed

- HexDocs `source_url` and `source_url_pattern` pointed at the wrong repo (`mob` instead of `mob_new`) and at a non-existent `/mob_new/` subdirectory prefix; the rendered `</>` glyphs all 404'd. Corrected to `github.com/genericjam/mob_new/blob/master/...`.

- Template fix: `beam_jni.c.eex` was missing the closing `}` for `nativeDeliverVendorUsbEvent` before the BT JNI thunks began — every subsequent `JNIEXPORT void JNICALL` was rejected by clang with "function definition is not allowed here". Generator tests never caught this because they grep rendered output, not compile it.

- Template fix: `MobBridge.kt.eex` duplicated three imports (`IntentFilter`, `ConcurrentHashMap`, `AtomicInteger`) alongside the BT Bluetooth* imports; kotlinc rejected with "Conflicting import".

- Template fix: `MobBridge.kt.eex` missing `androidx.compose.foundation.layout.fillMaxSize` import for the GpuView compile-error overlay.

- Template fix: orphan comment in the import block confused ktlint's `import-ordering` rule (no autocorrect available when imports are interleaved with comments).



### Added

- `.github/workflows/test.yml` — runs `mix test`, `mix format --check-formatted`, `mix credo --strict`, and `mix deps.audit` on push to master and on every PR.

- `.github/workflows/release.yml` — on tag push, creates a GitHub Release whose body is the matching `## [X.Y.Z]` section from this changelog.



## [0.3.1]



### Added

- Bluetooth Classic template scaffolding: `MobBridge.kt.eex` gains the Kotlin BroadcastReceivers, `external fun nativeDeliver*` JNI declarations, and Compose wiring for the `Mob.Bt` runtime API (HFP / SPP / HID). `AndroidManifest.xml.eex` gains the matching modern + legacy Bluetooth permissions. `beam_jni.c.eex` gains the per-event JNI thunks. (Generator tests cover the rendered template's external strings; manual on-device verification per the CLAUDE.md convention.)

- `Mob.GpuView` Android backend (GLES 3.0): `MobBridge.kt.eex` gains `MobGpuView` composable + `MobGpuSurfaceView` + `MobGpuRenderer`, mirroring the iOS `MobGpuView.swift` shipped in mob 0.6.4. Same `%{ios: "...MSL...", android: "...GLSL ES..."}` cross-platform shader contract; std140-ish uniform packing matches the iOS Swift packer (scalar/vec2/vec4 with natural alignment). Translucent red compile-error overlay on shader failure, matching iOS behavior.

- Generator-test coverage for both surfaces — asserts the rendered template contains the expected composables, classes, imports, and dispatch entries.



## [0.3.0] and earlier



Earlier releases predate this changelog; consult the [tag list](https://github.com/genericjam/mob_new/tags) and the per-tag commit messages for history.