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Enable Java language level 9 by default.

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This changes the default Java language level from 8 to 9, i.e. javac
invocations now use -source 1.9 -target 1.9.

The environment variable EXPERIMENTAL_JAVA_LANGUAGE_LEVEL_9=false is
added to switch back to the language level 8 behaviour. (Previously,
setting that variable to true was required to opt in to language level
9.)

Test: make droid java tests cts docs
Test: javap -v <some class file in output> | grep 'major version' (reports 53, for classes from 'benchmarks' which is in Android.bp and 'ahat' which is in Android.mk)
Test: make RunBluetoothRoboTests RunCarSettingsLibRoboTests (two main flavours of robolectric)
Test: make cts && cts-tradefed help
Test: atest CtsLibcoreTestCases (reasonably low-level device tests)
Test: atest CtsHostTzDataTests (arbitrary host test)
Bug: 115604102
Change-Id: I9de888e1df021244d5e61c40934178676f09ecc7
Merged-In: I52be1817fa7121fca3bce3d8857cb9ed0825570c
This commit is contained in:
Pete Gillin
2019-10-01 13:57:31 +01:00
parent 300a084db6
commit 1b3370f5d7
3 changed files with 18 additions and 16 deletions
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12
java/java_test.go
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@@ -1095,8 +1095,10 @@ func TestPatchModule(t *testing.T) {
`
t.Run("Java language level 8", func(t *testing.T) {
// Test default javac -source 1.8 -target 1.8
ctx, _ := testJava(t, bp)
// Test with legacy javac -source 1.8 -target 1.8
config := testConfig(map[string]string{"EXPERIMENTAL_JAVA_LANGUAGE_LEVEL_9": "false"})
ctx := testContext(bp, nil)
run(t, ctx, config)
checkPatchModuleFlag(t, ctx, "foo", "")
checkPatchModuleFlag(t, ctx, "bar", "")
@@ -1104,10 +1106,8 @@ func TestPatchModule(t *testing.T) {
})
t.Run("Java language level 9", func(t *testing.T) {
// Test again with javac -source 9 -target 9
config := testConfig(map[string]string{"EXPERIMENTAL_JAVA_LANGUAGE_LEVEL_9": "true"})
ctx := testContext(bp, nil)
run(t, ctx, config)
// Test with default javac -source 9 -target 9
ctx, _ := testJava(t, bp)
checkPatchModuleFlag(t, ctx, "foo", "")
expected := "java.base=.:" + buildDir