feat(android): a JNI runtime layer, and the discipline it has to carry

packages/zig/build.zigmodified+19-0

Changes to packages/zig/build.zig

		⋯398 linesShow the 398 lines above this hunk@@ -399,6 +399,20 @@ pub fn build(b: *std.Build) void {
399	399	.optimize = optimize,
400	400	}),
401	401	});
	402	+ // The JNI layer, on its own artifact because nothing on the iOS side
	403	+ // reaches it. It has no target gate: `JNIEnv` is a pointer to a table of
	404	+ // pointers, so the tests build one out of Zig functions and run anywhere —
	405	+ // no JVM, no emulator, no NDK. That is the whole reason the layer is shaped
	406	+ // the way it is.
	407	+ const jni_tests = b.addTest(.{
	408	+ .root_module = b.createModule(.{
	409	+ .root_source_file = b.path("src/jni_runtime.zig"),
	410	+ .target = target,
	411	+ .optimize = optimize,
	412	+ }),
	413	+ });
	414	+ const run_jni_tests = b.addRunArtifact(jni_tests);
	415	+
402	416	ios_conformance_tests.root_module.addAnonymousImport("CraftApp.swift", .{
403	417	.root_source_file = b.path("../ios/templates/CraftApp.swift"),
404	418	});
		⋯1,103 linesShow the 1,103 lines above this hunk@@ -1508,6 +1522,7 @@ pub fn build(b: *std.Build) void {
1508	1522	test_step.dependOn(&run_ios_module_tests.step);
1509	1523	}
1510	1524	test_step.dependOn(&run_ios_conformance_tests.step);
	1525	+ test_step.dependOn(&run_jni_tests.step);
1511	1526	test_step.dependOn(&run_menubar_tests.step);
1512	1527	test_step.dependOn(&run_components_tests.step);
1513	1528	test_step.dependOn(&run_gpu_tests.step);
		⋯666 linesShow the 666 lines above this hunk@@ -2180,6 +2195,10 @@ pub fn build(b: *std.Build) void {
2180	2195
2181	2196	const test_android_step = b.step("test:android", "Run Android tests");
2182	2197	test_android_step.dependOn(&run_android_tests.step);
	2198	+ // The JNI layer rides the existing Android step rather than adding a
	2199	+ // second one: `jni_runtime.zig` is the only way anything here reaches Java,
	2200	+ // so a run that skipped it would not be an Android test run.
	2201	+ test_android_step.dependOn(&run_jni_tests.step);
2183	2202
2184	2203	// Add Android tests to the main test step
2185	2204	test_step.dependOn(&run_android_tests.step);