Merge "Revert "Remove desugar support""

core/config.mk

@@ -570,7 +570,9 @@ USE_PREBUILT_SDK_TOOLS_IN_PLACE := true
 
 # Work around for b/68406220
 # This should match the soong version.
-USE_D8 := true
+ifndef USE_D8
+  USE_D8 := true
+endif
 
 # Default R8 behavior when USE_R8 is not specified.
 ifndef USE_R8
@@ -584,6 +586,7 @@ ifeq (,$(TARGET_BUILD_APPS)$(filter true,$(TARGET_BUILD_PDK)))
   AIDL := $(HOST_OUT_EXECUTABLES)/aidl
   AAPT := $(HOST_OUT_EXECUTABLES)/aapt
   AAPT2 := $(HOST_OUT_EXECUTABLES)/aapt2
+  DESUGAR := $(HOST_OUT_JAVA_LIBRARIES)/desugar.jar
   MAINDEXCLASSES := $(HOST_OUT_EXECUTABLES)/mainDexClasses
   SIGNAPK_JAR := $(HOST_OUT_JAVA_LIBRARIES)/signapk$(COMMON_JAVA_PACKAGE_SUFFIX)
   SIGNAPK_JNI_LIBRARY_PATH := $(HOST_OUT_SHARED_LIBRARIES)
@@ -593,6 +596,7 @@ else # TARGET_BUILD_APPS || TARGET_BUILD_PDK
   AIDL := $(prebuilt_build_tools_bin)/aidl
   AAPT := $(prebuilt_sdk_tools_bin)/aapt
   AAPT2 := $(prebuilt_sdk_tools_bin)/aapt2
+  DESUGAR := $(prebuilt_build_tools_jars)/desugar.jar
   MAINDEXCLASSES := $(prebuilt_sdk_tools)/mainDexClasses
   SIGNAPK_JAR := $(prebuilt_sdk_tools)/lib/signapk$(COMMON_JAVA_PACKAGE_SUFFIX)
   SIGNAPK_JNI_LIBRARY_PATH := $(prebuilt_sdk_tools)/$(HOST_OS)/lib64

core/definitions.mk

@@ -2374,10 +2374,48 @@ define codename-or-sdk-to-sdk
 $(if $(filter $(1),$(PLATFORM_VERSION_CODENAME)),10000,$(1))
 endef
 
+# --add-opens is required because desugar reflects via java.lang.invoke.MethodHandles.Lookup
+define desugar-classes-jar
+@echo Desugar: $@
+@mkdir -p $(dir $@)
+$(hide) rm -f $@ $@.tmp
+@rm -rf $(dir $@)/desugar_dumped_classes
+@mkdir $(dir $@)/desugar_dumped_classes
+$(hide) $(JAVA) \
+    $(if $(USE_OPENJDK9),--add-opens java.base/java.lang.invoke=ALL-UNNAMED,) \
+    -Djdk.internal.lambda.dumpProxyClasses=$(abspath $(dir $@))/desugar_dumped_classes \
+    -jar $(DESUGAR) \
+    $(addprefix --bootclasspath_entry ,$(PRIVATE_BOOTCLASSPATH)) \
+    $(addprefix --classpath_entry ,$(PRIVATE_SHARED_JAVA_HEADER_LIBRARIES)) \
+    --min_sdk_version $(call codename-or-sdk-to-sdk,$(PRIVATE_MIN_SDK_VERSION)) \
+    --allow_empty_bootclasspath \
+    $(if $(filter --core-library,$(PRIVATE_DX_FLAGS)),--core_library) \
+    -i $< -o $@.tmp
+    mv $@.tmp $@
+endef
+
 
 define transform-classes.jar-to-dex
 @echo "target Dex: $(PRIVATE_MODULE)"
 @mkdir -p $(dir $@)
+$(hide) rm -f $(dir $@)classes*.dex
+$(hide) $(DX_COMMAND) \
+    --dex --output=$(dir $@) \
+    --min-sdk-version=$(PRIVATE_MIN_SDK_VERSION) \
+    $(if $(NO_OPTIMIZE_DX), \
+        --no-optimize) \
+    $(if $(GENERATE_DEX_DEBUG), \
+	    --debug --verbose \
+	    --dump-to=$(@:.dex=.lst) \
+	    --dump-width=1000) \
+    $(PRIVATE_DX_FLAGS) \
+    $<
+endef
+
+
+define transform-classes-d8.jar-to-dex
+@echo "target Dex: $(PRIVATE_MODULE)"
+@mkdir -p $(dir $@)
 $(hide) rm -f $(dir $@)classes*.dex $(dir $@)d8_input.jar
 $(hide) $(ZIP2ZIP) -j -i $< -o $(dir $@)d8_input.jar "**/*.class"
 $(hide) $(DX_COMMAND) \

core/host_dalvik_java_library.mk

@@ -33,6 +33,7 @@ full_classes_header_jarjar := $(intermediates.COMMON)/classes-header-jarjar.jar
 full_classes_header_jar := $(intermediates.COMMON)/classes-header.jar
 full_classes_compiled_jar := $(intermediates.COMMON)/classes-full-debug.jar
 full_classes_combined_jar := $(intermediates.COMMON)/classes-combined.jar
+full_classes_desugar_jar := $(intermediates.COMMON)/desugar.classes.jar
 full_classes_jarjar_jar := $(intermediates.COMMON)/classes-jarjar.jar
 full_classes_jar := $(intermediates.COMMON)/classes.jar
 built_dex := $(intermediates.COMMON)/classes.dex
@@ -42,6 +43,7 @@ LOCAL_INTERMEDIATE_TARGETS += \
     $(full_classes_turbine_jar) \
     $(full_classes_compiled_jar) \
     $(full_classes_combined_jar) \
+    $(full_classes_desugar_jar) \
     $(full_classes_jarjar_jar) \
     $(full_classes_jar) \
     $(built_dex) \
@@ -156,6 +158,22 @@ endif
 
 $(eval $(call copy-one-file,$(full_classes_jarjar_jar),$(full_classes_jar)))
 
+ifneq ($(USE_D8_DESUGAR),true)
+my_desugaring :=
+ifeq ($(LOCAL_JAVA_LANGUAGE_VERSION),1.8)
+my_desugaring := true
+$(full_classes_desugar_jar): PRIVATE_DX_FLAGS := $(LOCAL_DX_FLAGS)
+$(full_classes_desugar_jar): $(full_classes_jar) $(full_java_header_libs) $(DESUGAR)
+	$(desugar-classes-jar)
+endif
+else
+my_desugaring :=
+endif
+
+ifndef my_desugaring
+full_classes_desugar_jar := $(full_classes_jar)
+endif
+
 ifeq ($(LOCAL_IS_STATIC_JAVA_LIBRARY),true)
 # No dex; all we want are the .class files with resources.
 $(LOCAL_BUILT_MODULE) : $(java_resource_sources)
@@ -166,8 +184,12 @@ $(LOCAL_BUILT_MODULE) : $(full_classes_jar)
 else # !LOCAL_IS_STATIC_JAVA_LIBRARY
 $(built_dex): PRIVATE_INTERMEDIATES_DIR := $(intermediates.COMMON)
 $(built_dex): PRIVATE_DX_FLAGS := $(LOCAL_DX_FLAGS)
-$(built_dex): $(full_classes_jar) $(DX) $(ZIP2ZIP)
+$(built_dex): $(full_classes_desugar_jar) $(DX) $(ZIP2ZIP)
+ifneq ($(USE_D8_DESUGAR),true)
 	$(transform-classes.jar-to-dex)
+else
+	$(transform-classes-d8.jar-to-dex)
+endif
 
 $(LOCAL_BUILT_MODULE): PRIVATE_DEX_FILE := $(built_dex)
 $(LOCAL_BUILT_MODULE): PRIVATE_SOURCE_ARCHIVE := $(full_classes_jarjar_jar)

core/java.mk

@@ -72,6 +72,7 @@ full_classes_header_jarjar := $(intermediates.COMMON)/classes-header-jarjar.jar
 full_classes_header_jar := $(intermediates.COMMON)/classes-header.jar
 full_classes_compiled_jar := $(intermediates.COMMON)/classes-full-debug.jar
 full_classes_processed_jar := $(intermediates.COMMON)/classes-processed.jar
+full_classes_desugar_jar := $(intermediates.COMMON)/classes-desugar.jar
 full_classes_jarjar_jar := $(intermediates.COMMON)/classes-jarjar.jar
 full_classes_proguard_jar := $(intermediates.COMMON)/classes-proguard.jar
 full_classes_combined_jar := $(intermediates.COMMON)/classes-combined.jar
@@ -93,6 +94,7 @@ endif
 LOCAL_INTERMEDIATE_TARGETS += \
     $(full_classes_turbine_jar) \
     $(full_classes_compiled_jar) \
+    $(full_classes_desugar_jar) \
     $(full_classes_jarjar_jar) \
     $(full_classes_jar) \
     $(full_classes_combined_jar) \
@@ -374,7 +376,23 @@ ifdef TARGET_OPENJDK9
 LOCAL_DX_FLAGS := $(filter-out --multi-dex,$(LOCAL_DX_FLAGS)) --multi-dex
 endif
 
-full_classes_pre_proguard_jar := $(LOCAL_FULL_CLASSES_JACOCO_JAR)
+ifneq ($(USE_D8_DESUGAR),true)
+my_desugaring :=
+ifndef LOCAL_IS_STATIC_JAVA_LIBRARY
+my_desugaring := true
+$(full_classes_desugar_jar): PRIVATE_DX_FLAGS := $(LOCAL_DX_FLAGS)
+$(full_classes_desugar_jar): $(LOCAL_FULL_CLASSES_JACOCO_JAR) $(full_java_header_libs) $(DESUGAR)
+	$(desugar-classes-jar)
+endif
+else
+my_desugaring :=
+endif
+
+ifndef my_desugaring
+full_classes_desugar_jar := $(LOCAL_FULL_CLASSES_JACOCO_JAR)
+endif
+
+full_classes_pre_proguard_jar := $(full_classes_desugar_jar)
 
 # Keep a copy of the jar just before proguard processing.
 $(eval $(call copy-one-file,$(full_classes_pre_proguard_jar),$(intermediates.COMMON)/classes-pre-proguard.jar))
@@ -545,7 +563,11 @@ endif # LOCAL_PROGUARD_ENABLED
 
 ifndef my_r8
 $(built_dex_intermediate): $(full_classes_proguard_jar) $(DX) $(ZIP2ZIP)
+ifneq ($(USE_D8_DESUGAR),true)
 	$(transform-classes.jar-to-dex)
+else
+	$(transform-classes-d8.jar-to-dex)
+endif
 endif
 
 ifneq ($(filter $(LOCAL_MODULE),$(PRODUCT_BOOT_JARS)),) # is_boot_jar