Merge changes from topic "build_time_vintf"

* changes:
  Improve BUILT_ASSEMBLED_*_MANIFEST checks
  Add check-vintf-all target.
diff --git a/common/math.mk b/common/math.mk
index ac3151e..83f2218 100644
--- a/common/math.mk
+++ b/common/math.mk
@@ -33,8 +33,8 @@
 math-expect-error :=
 
 # Run the math tests with:
-#  make -f ${ANDROID_BUILD_TOP}/build/make/core/math.mk RUN_MATH_TESTS=true
-#  $(get_build_var CKATI) -f ${ANDROID_BUILD_TOP}//build/make/core/math.mk RUN_MATH_TESTS=true
+#  make -f ${ANDROID_BUILD_TOP}/build/make/common/math.mk RUN_MATH_TESTS=true
+#  $(get_build_var CKATI) -f ${ANDROID_BUILD_TOP}//build/make/common/math.mk RUN_MATH_TESTS=true
 ifdef RUN_MATH_TESTS
   MATH_TEST_FAILURE :=
   MATH_TEST_ERROR :=
@@ -134,6 +134,10 @@
 $(if $(filter $(1),$(call math_max,$(1),$(2))),true)
 endef
 
+define math_gt
+$(if $(call math_gt_or_eq,$(2),$(1)),,true)
+endef
+
 define math_lt
 $(if $(call math_gt_or_eq,$(1),$(2)),,true)
 endef
@@ -141,6 +145,12 @@
 $(call math-expect-true,(call math_gt_or_eq, 2, 1))
 $(call math-expect-true,(call math_gt_or_eq, 1, 1))
 $(call math-expect-false,(call math_gt_or_eq, 1, 2))
+$(call math-expect-true,(call math_gt, 4, 3))
+$(call math-expect-false,(call math_gt, 5, 5))
+$(call math-expect-false,(call math_gt, 6, 7))
+$(call math-expect-false,(call math_lt, 1, 0))
+$(call math-expect-false,(call math_lt, 8, 8))
+$(call math-expect-true,(call math_lt, 10, 11))
 
 # $1 is the variable name to increment
 define inc_and_print
diff --git a/core/binary.mk b/core/binary.mk
index cf3cfd5..560fff7 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -816,7 +816,7 @@
     $(intermediates)/,$(y_yacc_sources:.y=.c))
 ifneq ($(y_yacc_cs),)
 $(y_yacc_cs): $(intermediates)/%.c: \
-    $(TOPDIR)$(LOCAL_PATH)/%.y $(BISON) $(BISON_DATA) \
+    $(TOPDIR)$(LOCAL_PATH)/%.y $(BISON) $(BISON_DATA) $(M4) \
     $(my_additional_dependencies)
 	$(call transform-y-to-c-or-cpp)
 $(call track-src-file-gen,$(y_yacc_sources),$(y_yacc_cs))
@@ -829,7 +829,7 @@
     $(intermediates)/,$(yy_yacc_sources:.yy=$(LOCAL_CPP_EXTENSION)))
 ifneq ($(yy_yacc_cpps),)
 $(yy_yacc_cpps): $(intermediates)/%$(LOCAL_CPP_EXTENSION): \
-    $(TOPDIR)$(LOCAL_PATH)/%.yy $(BISON) $(BISON_DATA) \
+    $(TOPDIR)$(LOCAL_PATH)/%.yy $(BISON) $(BISON_DATA) $(M4) \
     $(my_additional_dependencies)
 	$(call transform-y-to-c-or-cpp)
 $(call track-src-file-gen,$(yy_yacc_sources),$(yy_yacc_cpps))
@@ -845,6 +845,7 @@
 l_lex_cs := $(addprefix \
     $(intermediates)/,$(l_lex_sources:.l=.c))
 ifneq ($(l_lex_cs),)
+$(l_lex_cs): $(LEX) $(M4)
 $(l_lex_cs): $(intermediates)/%.c: \
     $(TOPDIR)$(LOCAL_PATH)/%.l
 	$(transform-l-to-c-or-cpp)
@@ -857,6 +858,7 @@
 ll_lex_cpps := $(addprefix \
     $(intermediates)/,$(ll_lex_sources:.ll=$(LOCAL_CPP_EXTENSION)))
 ifneq ($(ll_lex_cpps),)
+$(ll_lex_cpps): $(LEX) $(M4)
 $(ll_lex_cpps): $(intermediates)/%$(LOCAL_CPP_EXTENSION): \
     $(TOPDIR)$(LOCAL_PATH)/%.ll
 	$(transform-l-to-c-or-cpp)
diff --git a/core/config.mk b/core/config.mk
index 4cc78b8..c5f54de 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -553,6 +553,7 @@
 BISON := $(prebuilt_build_tools_bin_noasan)/bison
 YACC := $(BISON) -d
 BISON_DATA := $(wildcard $(BISON_PKGDATADIR)/* $(BISON_PKGDATADIR)/*/*)
+M4 :=$= $(prebuilt_build_tools_bin_noasan)/m4
 
 YASM := prebuilts/misc/$(BUILD_OS)-$(HOST_PREBUILT_ARCH)/yasm/yasm
 
@@ -709,19 +710,37 @@
   PRODUCT_USE_VNDK := $(PRODUCT_USE_VNDK_OVERRIDE)
 else ifeq ($(PRODUCT_SHIPPING_API_LEVEL),)
   # No shipping level defined
-else ifeq ($(call math_gt_or_eq,27,$(PRODUCT_SHIPPING_API_LEVEL)),)
+else ifeq ($(call math_gt,$(PRODUCT_SHIPPING_API_LEVEL),27),true)
   PRODUCT_USE_VNDK := $(PRODUCT_FULL_TREBLE)
 endif
 
+# Define PRODUCT_PRODUCT_VNDK_VERSION if PRODUCT_USE_VNDK is true and
+# PRODUCT_SHIPPING_API_LEVEL is greater than 29.
+PRODUCT_USE_PRODUCT_VNDK := false
 ifeq ($(PRODUCT_USE_VNDK),true)
+  ifneq ($(PRODUCT_USE_PRODUCT_VNDK_OVERRIDE),)
+    PRODUCT_USE_PRODUCT_VNDK := $(PRODUCT_USE_PRODUCT_VNDK_OVERRIDE)
+  else ifeq ($(PRODUCT_SHIPPING_API_LEVEL),)
+    # No shipping level defined
+  else ifeq ($(call math_gt,$(PRODUCT_SHIPPING_API_LEVEL),29),true)
+    PRODUCT_USE_PRODUCT_VNDK := true
+  endif
+
   ifndef BOARD_VNDK_VERSION
     BOARD_VNDK_VERSION := current
   endif
+
+  ifeq ($(PRODUCT_USE_PRODUCT_VNDK),true)
+    ifndef PRODUCT_PRODUCT_VNDK_VERSION
+      PRODUCT_PRODUCT_VNDK_VERSION := current
+    endif
+  endif
 endif
 
-$(KATI_obsolete_var PRODUCT_USE_VNDK_OVERRIDE,Use PRODUCT_USE_VNDK instead)
-.KATI_READONLY := \
-    PRODUCT_USE_VNDK
+$(KATI_obsolete_var PRODUCT_USE_VNDK,Use BOARD_VNDK_VERSION instead)
+$(KATI_obsolete_var PRODUCT_USE_VNDK_OVERRIDE,Use BOARD_VNDK_VERSION instead)
+$(KATI_obsolete_var PRODUCT_USE_PRODUCT_VNDK,Use PRODUCT_PRODUCT_VNDK_VERSION instead)
+$(KATI_obsolete_var PRODUCT_USE_PRODUCT_VNDK_OVERRIDE,Use PRODUCT_PRODUCT_VNDK_VERSION instead)
 
 # Set BOARD_SYSTEMSDK_VERSIONS to the latest SystemSDK version starting from P-launching
 # devices if unset.
diff --git a/core/definitions.mk b/core/definitions.mk
index ff435e2..49747ed 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -889,7 +889,7 @@
 define transform-l-to-c-or-cpp
 @echo "Lex: $(PRIVATE_MODULE) <= $<"
 @mkdir -p $(dir $@)
-$(hide) $(LEX) -o$@ $<
+M4=$(M4) $(LEX) -o$@ $<
 endef
 
 ###########################################################
@@ -900,7 +900,7 @@
 define transform-y-to-c-or-cpp
 @echo "Yacc: $(PRIVATE_MODULE) <= $<"
 @mkdir -p $(dir $@)
-$(YACC) $(PRIVATE_YACCFLAGS) \
+M4=$(M4) $(YACC) $(PRIVATE_YACCFLAGS) \
   --defines=$(basename $@).h \
   -o $@ $<
 endef
diff --git a/core/dex_preopt_config.mk b/core/dex_preopt_config.mk
index 78cc012..5dd5505 100644
--- a/core/dex_preopt_config.mk
+++ b/core/dex_preopt_config.mk
@@ -37,14 +37,6 @@
   endif
 endif
 
-# Default to debug version to help find bugs.
-# Set USE_DEX2OAT_DEBUG to false for only building non-debug versions.
-ifeq ($(USE_DEX2OAT_DEBUG),false)
-DEX2OAT := $(SOONG_HOST_OUT_EXECUTABLES)/dex2oat$(HOST_EXECUTABLE_SUFFIX)
-else
-DEX2OAT := $(SOONG_HOST_OUT_EXECUTABLES)/dex2oatd$(HOST_EXECUTABLE_SUFFIX)
-endif
-
 # Use the first preloaded-classes file in PRODUCT_COPY_FILES.
 PRELOADED_CLASSES := $(call word-colon,1,$(firstword \
     $(filter %system/etc/preloaded-classes,$(PRODUCT_COPY_FILES))))
@@ -134,16 +126,6 @@
   $(call add_json_str,  Dex2oatImageXmx,                    $(DEX2OAT_IMAGE_XMX))
   $(call add_json_str,  Dex2oatImageXms,                    $(DEX2OAT_IMAGE_XMS))
 
-  $(call add_json_map,  Tools)
-  $(call add_json_str,  Profman,                            $(SOONG_HOST_OUT_EXECUTABLES)/profman)
-  $(call add_json_str,  Dex2oat,                            $(DEX2OAT))
-  $(call add_json_str,  Aapt,                               $(SOONG_HOST_OUT_EXECUTABLES)/aapt)
-  $(call add_json_str,  SoongZip,                           $(SOONG_ZIP))
-  $(call add_json_str,  Zip2zip,                            $(ZIP2ZIP))
-  $(call add_json_str,  ManifestCheck,                      $(SOONG_HOST_OUT_EXECUTABLES)/manifest_check)
-  $(call add_json_str,  ConstructContext,                   $(BUILD_SYSTEM)/construct_context.sh)
-  $(call end_json_map)
-
   $(call json_end)
 
   $(shell mkdir -p $(dir $(DEX_PREOPT_CONFIG)))
@@ -156,11 +138,3 @@
       rm $(DEX_PREOPT_CONFIG).tmp; \
     fi)
 endif
-
-DEXPREOPT_GEN_DEPS := \
-  $(SOONG_HOST_OUT_EXECUTABLES)/profman \
-  $(DEX2OAT) \
-  $(SOONG_HOST_OUT_EXECUTABLES)/aapt \
-  $(SOONG_ZIP) \
-  $(ZIP2ZIP) \
-  $(BUILD_SYSTEM)/construct_context.sh \
diff --git a/core/dex_preopt_odex_install.mk b/core/dex_preopt_odex_install.mk
index e6b5010..0fb2dd2 100644
--- a/core/dex_preopt_odex_install.mk
+++ b/core/dex_preopt_odex_install.mk
@@ -114,7 +114,7 @@
 my_dexpreopt_image_locations :=
 my_dexpreopt_infix := boot
 ifeq (true, $(DEXPREOPT_USE_APEX_IMAGE))
-  my_dexpreopt_infix := apex
+  my_dexpreopt_infix := jitzygote-boot
 endif
 
 ifdef LOCAL_DEX_PREOPT
@@ -259,12 +259,16 @@
 
   .KATI_RESTAT: $(my_dexpreopt_script)
   $(my_dexpreopt_script): PRIVATE_MODULE := $(LOCAL_MODULE)
+  $(my_dexpreopt_script): PRIVATE_GLOBAL_SOONG_CONFIG := $(DEX_PREOPT_SOONG_CONFIG_FOR_MAKE)
   $(my_dexpreopt_script): PRIVATE_GLOBAL_CONFIG := $(DEX_PREOPT_CONFIG_FOR_MAKE)
   $(my_dexpreopt_script): PRIVATE_MODULE_CONFIG := $(my_dexpreopt_config)
   $(my_dexpreopt_script): $(DEXPREOPT_GEN)
-  $(my_dexpreopt_script): $(my_dexpreopt_config) $(DEX_PREOPT_CONFIG_FOR_MAKE)
+  $(my_dexpreopt_script): $(my_dexpreopt_config) $(DEX_PREOPT_SOONG_CONFIG_FOR_MAKE) $(DEX_PREOPT_CONFIG_FOR_MAKE)
 	@echo "$(PRIVATE_MODULE) dexpreopt gen"
-	$(DEXPREOPT_GEN) -global $(PRIVATE_GLOBAL_CONFIG) -module $(PRIVATE_MODULE_CONFIG) \
+	$(DEXPREOPT_GEN) \
+	-global_soong $(PRIVATE_GLOBAL_SOONG_CONFIG) \
+	-global $(PRIVATE_GLOBAL_CONFIG) \
+	-module $(PRIVATE_MODULE_CONFIG) \
 	-dexpreopt_script $@ \
 	-out_dir $(OUT_DIR)
 
diff --git a/core/main.mk b/core/main.mk
index e0bf6ea..0400856 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -1606,7 +1606,7 @@
   endif
 
   ifeq ($(EMMA_INSTRUMENT),true)
-    $(JACOCO_REPORT_CLASSES_ALL) : $(INSTALLED_SYSTEMIMAGE_TARGET)
+    $(JACOCO_REPORT_CLASSES_ALL) : $(modules_to_install)
     $(call dist-for-goals, dist_files, $(JACOCO_REPORT_CLASSES_ALL))
   endif
 
diff --git a/core/tasks/boot_jars_package_check.mk b/core/tasks/boot_jars_package_check.mk
index ba383f5..ceaff54 100644
--- a/core/tasks/boot_jars_package_check.mk
+++ b/core/tasks/boot_jars_package_check.mk
@@ -22,10 +22,23 @@
 
 intermediates := $(call intermediates-dir-for, PACKAGING, boot-jars-package-check,,COMMON)
 stamp := $(intermediates)/stamp
-art_boot_jars := $(addsuffix .com.android.art.release,$(filter $(ART_APEX_JARS), $(PRODUCT_BOOT_JARS)))
-conscrypt_boot_jars := $(addsuffix .com.android.conscrypt,$(filter conscrypt, $(PRODUCT_BOOT_JARS)))
-noncore_boot_jars := $(filter-out $(ART_APEX_JARS) conscrypt, $(PRODUCT_BOOT_JARS))
-built_boot_jars := $(foreach j, $(art_boot_jars) $(conscrypt_boot_jars) $(noncore_boot_jars), \
+
+# The actual names for the updatable jars are <jar_name>.<apex_name> e.g., updatable-media.com.android.media
+updatable_boot_jars := $(foreach pair,$(PRODUCT_UPDATABLE_BOOT_JARS),\
+  $(eval apex := $(call word-colon,1,$(pair)))\
+  $(eval jar := $(call word-colon,2,$(pair)))\
+  $(jar).$(apex)\
+)
+#TODO(jiyong) merge art_boot_jars into updatable_boot_jars
+art_boot_jars := $(addsuffix .com.android.art.release,$(filter $(ART_APEX_JARS),$(PRODUCT_BOOT_JARS)))
+
+platform_boot_jars := $(filter-out \
+  $(ART_APEX_JARS)\
+  $(foreach pair,$(PRODUCT_UPDATABLE_BOOT_JARS),$(call word-colon,2,$(pair))),\
+  $(PRODUCT_BOOT_JARS)\
+)
+
+built_boot_jars := $(foreach j, $(updatable_boot_jars) $(art_boot_jars) $(platform_boot_jars), \
   $(call intermediates-dir-for, JAVA_LIBRARIES, $(j),,COMMON)/classes.jar)
 script := build/make/core/tasks/check_boot_jars/check_boot_jars.py
 whitelist_file := build/make/core/tasks/check_boot_jars/package_whitelist.txt
diff --git a/core/tasks/check_boot_jars/check_boot_jars.py b/core/tasks/check_boot_jars/check_boot_jars.py
index 9d71553..67b73d5 100755
--- a/core/tasks/check_boot_jars/check_boot_jars.py
+++ b/core/tasks/check_boot_jars/check_boot_jars.py
@@ -53,10 +53,9 @@
     if f.endswith('.class'):
       package_name = os.path.dirname(f)
       package_name = package_name.replace('/', '.')
-      # Skip class without a package name
-      if package_name and not whitelist_re.match(package_name):
-        print >> sys.stderr, ('Error: %s contains class file %s, whose package name %s is not '
-                              'in the whitelist %s of packages allowed on the bootclasspath.'
+      if not package_name or not whitelist_re.match(package_name):
+        print >> sys.stderr, ('Error: %s contains class file %s, whose package name %s is empty or'
+                              ' not in the whitelist %s of packages allowed on the bootclasspath.'
                               % (jar, f, package_name, whitelist_path))
         return False
   return True
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 8095212..5d445e0 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -250,7 +250,7 @@
     #  It must be of the form "YYYY-MM-DD" on production devices.
     #  It must match one of the Android Security Patch Level strings of the Public Security Bulletins.
     #  If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-      PLATFORM_SECURITY_PATCH := 2019-12-05
+      PLATFORM_SECURITY_PATCH := 2020-01-01
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH
 
diff --git a/envsetup.sh b/envsetup.sh
index a44cd50..389fbb7 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -1342,7 +1342,7 @@
         refreshmod || return 1
     fi
 
-    python -c "import json; print '\n'.join(sorted(json.load(open('$ANDROID_PRODUCT_OUT/module-info.json')).keys()))"
+    python -c "import json; print('\n'.join(sorted(json.load(open('$ANDROID_PRODUCT_OUT/module-info.json')).keys())))"
 }
 
 # Get the path of a specific module in the android tree, as cached in module-info.json. If any build change
@@ -1368,7 +1368,7 @@
 module_info = json.load(open('$ANDROID_PRODUCT_OUT/module-info.json'))
 if module not in module_info:
     exit(1)
-print module_info[module]['path'][0]" 2>/dev/null)
+print(module_info[module]['path'][0])" 2>/dev/null)
 
     if [ -z "$relpath" ]; then
         echo "Could not find module '$1' (try 'refreshmod' if there have been build changes?)." >&2
diff --git a/target/product/base_system.mk b/target/product/base_system.mk
index 2895801..8ced9ab 100644
--- a/target/product/base_system.mk
+++ b/target/product/base_system.mk
@@ -323,7 +323,7 @@
     telephony-common \
     voip-common \
     ims-common \
-    framework-sdkext \
+    framework-sdkextensions \
     ike \
     updatable-media \
     framework-tethering
@@ -332,7 +332,7 @@
     com.android.conscrypt:conscrypt \
     com.android.ipsec:ike \
     com.android.media:updatable-media \
-    com.android.sdkext:framework-sdkext \
+    com.android.sdkext:framework-sdkextensions \
     com.android.tethering:framework-tethering
 
 PRODUCT_COPY_FILES += \
diff --git a/target/product/gsi/current.txt b/target/product/gsi/current.txt
index c50177f..d29a48f 100644
--- a/target/product/gsi/current.txt
+++ b/target/product/gsi/current.txt
@@ -186,6 +186,7 @@
 VNDK-core: android.hardware.usb@1.0.so
 VNDK-core: android.hardware.usb@1.1.so
 VNDK-core: android.hardware.usb@1.2.so
+VNDK-core: android.hardware.vibrator-V1-ndk_platform.so
 VNDK-core: android.hardware.vibrator@1.0.so
 VNDK-core: android.hardware.vibrator@1.1.so
 VNDK-core: android.hardware.vibrator@1.2.so
@@ -273,7 +274,6 @@
 VNDK-core: libxml2.so
 VNDK-core: libyuv.so
 VNDK-core: libziparchive.so
-VNDK-core: vintf-vibrator-V1-ndk_platform.so
 VNDK-private: libbacktrace.so
 VNDK-private: libbinderthreadstate.so
 VNDK-private: libblas.so
diff --git a/target/product/sdk_phone_x86.mk b/target/product/sdk_phone_x86.mk
index 4f7602d..9df26a9 100644
--- a/target/product/sdk_phone_x86.mk
+++ b/target/product/sdk_phone_x86.mk
@@ -15,7 +15,6 @@
 #
 QEMU_USE_SYSTEM_EXT_PARTITIONS := true
 PRODUCT_USE_DYNAMIC_PARTITIONS := true
-BOARD_AVB_MAKE_VBMETA_IMAGE_ARGS += --flags 2
 
 #
 # All components inherited here go to system image
diff --git a/tools/releasetools/check_target_files_vintf.py b/tools/releasetools/check_target_files_vintf.py
index a556f53..f41df37 100755
--- a/tools/releasetools/check_target_files_vintf.py
+++ b/tools/releasetools/check_target_files_vintf.py
@@ -45,6 +45,7 @@
     '/vendor': ('VENDOR', 'SYSTEM/vendor'),
     '/product': ('PRODUCT', 'SYSTEM/product'),
     '/odm': ('ODM', 'VENDOR/odm', 'SYSTEM/vendor/odm'),
+    '/system_ext': ('SYSTEM_EXT', 'SYSTEM/system_ext'),
 }
 
 UNZIP_PATTERN = ['META/*', '*/build.prop']
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index b0a0e02..6a6f119 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -62,7 +62,7 @@
           'Warning: releasetools script should be invoked as hermetic Python '
           'executable -- build and run `{}` directly.'.format(script_name[:-3]),
           file=sys.stderr)
-    self.search_path = os.path.realpath(os.path.join(exec_path, '..'))
+    self.search_path = os.path.realpath(os.path.join(os.path.dirname(exec_path), '..'))
 
     self.signapk_path = "framework/signapk.jar"  # Relative to search_path
     self.signapk_shared_library_path = "lib64"   # Relative to search_path
diff --git a/tools/releasetools/sign_target_files_apks.py b/tools/releasetools/sign_target_files_apks.py
index 35b11c1..fffbace 100755
--- a/tools/releasetools/sign_target_files_apks.py
+++ b/tools/releasetools/sign_target_files_apks.py
@@ -552,8 +552,13 @@
 
     # Ask add_img_to_target_files to rebuild the recovery patch if needed.
     elif filename in ("SYSTEM/recovery-from-boot.p",
+                      "VENDOR/recovery-from-boot.p",
+
                       "SYSTEM/etc/recovery.img",
-                      "SYSTEM/bin/install-recovery.sh"):
+                      "VENDOR/etc/recovery.img",
+
+                      "SYSTEM/bin/install-recovery.sh",
+                      "VENDOR/bin/install-recovery.sh"):
       OPTIONS.rebuild_recovery = True
 
     # Don't copy OTA certs if we're replacing them.
diff --git a/tools/warn/android_project_list.py b/tools/warn/android_project_list.py
index 1e9e276..4726fa2 100644
--- a/tools/warn/android_project_list.py
+++ b/tools/warn/android_project_list.py
@@ -1,4 +1,4 @@
-#
+# python3
 # Copyright (C) 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -16,161 +16,160 @@
 """Define a project list to sort warnings by project directory path."""
 
 
-def project_name_and_pattern(name, pattern):
-  return [name, '(^|.*/)' + pattern + '/.*: warning:']
-
-
-def simple_project_pattern(pattern):
-  return project_name_and_pattern(pattern, pattern)
+def create_pattern(name, pattern=None):
+  if pattern is not None:
+    return [name, '(^|.*/)' + pattern + '/.*: warning:']
+  return [name, '(^|.*/)' + name + '/.*: warning:']
 
 
 # A list of [project_name, file_path_pattern].
 # project_name should not contain comma, to be used in CSV output.
 project_list = [
-    simple_project_pattern('art'),
-    simple_project_pattern('bionic'),
-    simple_project_pattern('bootable'),
-    simple_project_pattern('build'),
-    simple_project_pattern('cts'),
-    simple_project_pattern('dalvik'),
-    simple_project_pattern('developers'),
-    simple_project_pattern('development'),
-    simple_project_pattern('device'),
-    simple_project_pattern('doc'),
+    create_pattern('art'),
+    create_pattern('bionic'),
+    create_pattern('bootable'),
+    create_pattern('build'),
+    create_pattern('cts'),
+    create_pattern('dalvik'),
+    create_pattern('developers'),
+    create_pattern('development'),
+    create_pattern('device'),
+    create_pattern('doc'),
     # match external/google* before external/
-    project_name_and_pattern('external/google', 'external/google.*'),
-    project_name_and_pattern('external/non-google', 'external'),
-    simple_project_pattern('frameworks/av/camera'),
-    simple_project_pattern('frameworks/av/cmds'),
-    simple_project_pattern('frameworks/av/drm'),
-    simple_project_pattern('frameworks/av/include'),
-    simple_project_pattern('frameworks/av/media/img_utils'),
-    simple_project_pattern('frameworks/av/media/libcpustats'),
-    simple_project_pattern('frameworks/av/media/libeffects'),
-    simple_project_pattern('frameworks/av/media/libmediaplayerservice'),
-    simple_project_pattern('frameworks/av/media/libmedia'),
-    simple_project_pattern('frameworks/av/media/libstagefright'),
-    simple_project_pattern('frameworks/av/media/mtp'),
-    simple_project_pattern('frameworks/av/media/ndk'),
-    simple_project_pattern('frameworks/av/media/utils'),
-    project_name_and_pattern('frameworks/av/media/Other',
-                             'frameworks/av/media'),
-    simple_project_pattern('frameworks/av/radio'),
-    simple_project_pattern('frameworks/av/services'),
-    simple_project_pattern('frameworks/av/soundtrigger'),
-    project_name_and_pattern('frameworks/av/Other', 'frameworks/av'),
-    simple_project_pattern('frameworks/base/cmds'),
-    simple_project_pattern('frameworks/base/core'),
-    simple_project_pattern('frameworks/base/drm'),
-    simple_project_pattern('frameworks/base/media'),
-    simple_project_pattern('frameworks/base/libs'),
-    simple_project_pattern('frameworks/base/native'),
-    simple_project_pattern('frameworks/base/packages'),
-    simple_project_pattern('frameworks/base/rs'),
-    simple_project_pattern('frameworks/base/services'),
-    simple_project_pattern('frameworks/base/tests'),
-    simple_project_pattern('frameworks/base/tools'),
-    project_name_and_pattern('frameworks/base/Other', 'frameworks/base'),
-    simple_project_pattern('frameworks/compile/libbcc'),
-    simple_project_pattern('frameworks/compile/mclinker'),
-    simple_project_pattern('frameworks/compile/slang'),
-    project_name_and_pattern('frameworks/compile/Other', 'frameworks/compile'),
-    simple_project_pattern('frameworks/minikin'),
-    simple_project_pattern('frameworks/ml'),
-    simple_project_pattern('frameworks/native/cmds'),
-    simple_project_pattern('frameworks/native/include'),
-    simple_project_pattern('frameworks/native/libs'),
-    simple_project_pattern('frameworks/native/opengl'),
-    simple_project_pattern('frameworks/native/services'),
-    simple_project_pattern('frameworks/native/vulkan'),
-    project_name_and_pattern('frameworks/native/Other', 'frameworks/native'),
-    simple_project_pattern('frameworks/opt'),
-    simple_project_pattern('frameworks/rs'),
-    simple_project_pattern('frameworks/webview'),
-    simple_project_pattern('frameworks/wilhelm'),
-    project_name_and_pattern('frameworks/Other', 'frameworks'),
-    simple_project_pattern('hardware/akm'),
-    simple_project_pattern('hardware/broadcom'),
-    simple_project_pattern('hardware/google'),
-    simple_project_pattern('hardware/intel'),
-    simple_project_pattern('hardware/interfaces'),
-    simple_project_pattern('hardware/libhardware'),
-    simple_project_pattern('hardware/libhardware_legacy'),
-    simple_project_pattern('hardware/qcom'),
-    simple_project_pattern('hardware/ril'),
-    project_name_and_pattern('hardware/Other', 'hardware'),
-    simple_project_pattern('kernel'),
-    simple_project_pattern('libcore'),
-    simple_project_pattern('libnativehelper'),
-    simple_project_pattern('ndk'),
+    create_pattern('external/google', 'external/google.*'),
+    create_pattern('external/non-google', 'external'),
+    create_pattern('frameworks/av/camera'),
+    create_pattern('frameworks/av/cmds'),
+    create_pattern('frameworks/av/drm'),
+    create_pattern('frameworks/av/include'),
+    create_pattern('frameworks/av/media/img_utils'),
+    create_pattern('frameworks/av/media/libcpustats'),
+    create_pattern('frameworks/av/media/libeffects'),
+    create_pattern('frameworks/av/media/libmediaplayerservice'),
+    create_pattern('frameworks/av/media/libmedia'),
+    create_pattern('frameworks/av/media/libstagefright'),
+    create_pattern('frameworks/av/media/mtp'),
+    create_pattern('frameworks/av/media/ndk'),
+    create_pattern('frameworks/av/media/utils'),
+    create_pattern('frameworks/av/media/Other', 'frameworks/av/media'),
+    create_pattern('frameworks/av/radio'),
+    create_pattern('frameworks/av/services'),
+    create_pattern('frameworks/av/soundtrigger'),
+    create_pattern('frameworks/av/Other', 'frameworks/av'),
+    create_pattern('frameworks/base/cmds'),
+    create_pattern('frameworks/base/core'),
+    create_pattern('frameworks/base/drm'),
+    create_pattern('frameworks/base/media'),
+    create_pattern('frameworks/base/libs'),
+    create_pattern('frameworks/base/native'),
+    create_pattern('frameworks/base/packages'),
+    create_pattern('frameworks/base/rs'),
+    create_pattern('frameworks/base/services'),
+    create_pattern('frameworks/base/tests'),
+    create_pattern('frameworks/base/tools'),
+    create_pattern('frameworks/base/Other', 'frameworks/base'),
+    create_pattern('frameworks/compile/libbcc'),
+    create_pattern('frameworks/compile/mclinker'),
+    create_pattern('frameworks/compile/slang'),
+    create_pattern('frameworks/compile/Other', 'frameworks/compile'),
+    create_pattern('frameworks/minikin'),
+    create_pattern('frameworks/ml'),
+    create_pattern('frameworks/native/cmds'),
+    create_pattern('frameworks/native/include'),
+    create_pattern('frameworks/native/libs'),
+    create_pattern('frameworks/native/opengl'),
+    create_pattern('frameworks/native/services'),
+    create_pattern('frameworks/native/vulkan'),
+    create_pattern('frameworks/native/Other', 'frameworks/native'),
+    create_pattern('frameworks/opt'),
+    create_pattern('frameworks/rs'),
+    create_pattern('frameworks/webview'),
+    create_pattern('frameworks/wilhelm'),
+    create_pattern('frameworks/Other', 'frameworks'),
+    create_pattern('hardware/akm'),
+    create_pattern('hardware/broadcom'),
+    create_pattern('hardware/google'),
+    create_pattern('hardware/intel'),
+    create_pattern('hardware/interfaces'),
+    create_pattern('hardware/libhardware'),
+    create_pattern('hardware/libhardware_legacy'),
+    create_pattern('hardware/qcom'),
+    create_pattern('hardware/ril'),
+    create_pattern('hardware/Other', 'hardware'),
+    create_pattern('kernel'),
+    create_pattern('libcore'),
+    create_pattern('libnativehelper'),
+    create_pattern('ndk'),
     # match vendor/unbungled_google/packages before other packages
-    simple_project_pattern('unbundled_google'),
-    simple_project_pattern('packages'),
-    simple_project_pattern('pdk'),
-    simple_project_pattern('prebuilts'),
-    simple_project_pattern('system/bt'),
-    simple_project_pattern('system/connectivity'),
-    simple_project_pattern('system/core/adb'),
-    simple_project_pattern('system/core/base'),
-    simple_project_pattern('system/core/debuggerd'),
-    simple_project_pattern('system/core/fastboot'),
-    simple_project_pattern('system/core/fingerprintd'),
-    simple_project_pattern('system/core/fs_mgr'),
-    simple_project_pattern('system/core/gatekeeperd'),
-    simple_project_pattern('system/core/healthd'),
-    simple_project_pattern('system/core/include'),
-    simple_project_pattern('system/core/init'),
-    simple_project_pattern('system/core/libbacktrace'),
-    simple_project_pattern('system/core/liblog'),
-    simple_project_pattern('system/core/libpixelflinger'),
-    simple_project_pattern('system/core/libprocessgroup'),
-    simple_project_pattern('system/core/libsysutils'),
-    simple_project_pattern('system/core/logcat'),
-    simple_project_pattern('system/core/logd'),
-    simple_project_pattern('system/core/run-as'),
-    simple_project_pattern('system/core/sdcard'),
-    simple_project_pattern('system/core/toolbox'),
-    project_name_and_pattern('system/core/Other', 'system/core'),
-    simple_project_pattern('system/extras/ANRdaemon'),
-    simple_project_pattern('system/extras/cpustats'),
-    simple_project_pattern('system/extras/crypto-perf'),
-    simple_project_pattern('system/extras/ext4_utils'),
-    simple_project_pattern('system/extras/f2fs_utils'),
-    simple_project_pattern('system/extras/iotop'),
-    simple_project_pattern('system/extras/libfec'),
-    simple_project_pattern('system/extras/memory_replay'),
-    simple_project_pattern('system/extras/mmap-perf'),
-    simple_project_pattern('system/extras/multinetwork'),
-    simple_project_pattern('system/extras/procrank'),
-    simple_project_pattern('system/extras/runconuid'),
-    simple_project_pattern('system/extras/showmap'),
-    simple_project_pattern('system/extras/simpleperf'),
-    simple_project_pattern('system/extras/su'),
-    simple_project_pattern('system/extras/tests'),
-    simple_project_pattern('system/extras/verity'),
-    project_name_and_pattern('system/extras/Other', 'system/extras'),
-    simple_project_pattern('system/gatekeeper'),
-    simple_project_pattern('system/keymaster'),
-    simple_project_pattern('system/libhidl'),
-    simple_project_pattern('system/libhwbinder'),
-    simple_project_pattern('system/media'),
-    simple_project_pattern('system/netd'),
-    simple_project_pattern('system/nvram'),
-    simple_project_pattern('system/security'),
-    simple_project_pattern('system/sepolicy'),
-    simple_project_pattern('system/tools'),
-    simple_project_pattern('system/update_engine'),
-    simple_project_pattern('system/vold'),
-    project_name_and_pattern('system/Other', 'system'),
-    simple_project_pattern('toolchain'),
-    simple_project_pattern('test'),
-    simple_project_pattern('tools'),
+    create_pattern('unbundled_google'),
+    create_pattern('packages'),
+    create_pattern('pdk'),
+    create_pattern('prebuilts'),
+    create_pattern('system/bt'),
+    create_pattern('system/connectivity'),
+    create_pattern('system/core/adb'),
+    create_pattern('system/core/base'),
+    create_pattern('system/core/debuggerd'),
+    create_pattern('system/core/fastboot'),
+    create_pattern('system/core/fingerprintd'),
+    create_pattern('system/core/fs_mgr'),
+    create_pattern('system/core/gatekeeperd'),
+    create_pattern('system/core/healthd'),
+    create_pattern('system/core/include'),
+    create_pattern('system/core/init'),
+    create_pattern('system/core/libbacktrace'),
+    create_pattern('system/core/liblog'),
+    create_pattern('system/core/libpixelflinger'),
+    create_pattern('system/core/libprocessgroup'),
+    create_pattern('system/core/libsysutils'),
+    create_pattern('system/core/logcat'),
+    create_pattern('system/core/logd'),
+    create_pattern('system/core/run-as'),
+    create_pattern('system/core/sdcard'),
+    create_pattern('system/core/toolbox'),
+    create_pattern('system/core/Other', 'system/core'),
+    create_pattern('system/extras/ANRdaemon'),
+    create_pattern('system/extras/cpustats'),
+    create_pattern('system/extras/crypto-perf'),
+    create_pattern('system/extras/ext4_utils'),
+    create_pattern('system/extras/f2fs_utils'),
+    create_pattern('system/extras/iotop'),
+    create_pattern('system/extras/libfec'),
+    create_pattern('system/extras/memory_replay'),
+    create_pattern('system/extras/mmap-perf'),
+    create_pattern('system/extras/multinetwork'),
+    create_pattern('system/extras/perfprofd'),
+    create_pattern('system/extras/procrank'),
+    create_pattern('system/extras/runconuid'),
+    create_pattern('system/extras/showmap'),
+    create_pattern('system/extras/simpleperf'),
+    create_pattern('system/extras/su'),
+    create_pattern('system/extras/tests'),
+    create_pattern('system/extras/verity'),
+    create_pattern('system/extras/Other', 'system/extras'),
+    create_pattern('system/gatekeeper'),
+    create_pattern('system/keymaster'),
+    create_pattern('system/libhidl'),
+    create_pattern('system/libhwbinder'),
+    create_pattern('system/media'),
+    create_pattern('system/netd'),
+    create_pattern('system/nvram'),
+    create_pattern('system/security'),
+    create_pattern('system/sepolicy'),
+    create_pattern('system/tools'),
+    create_pattern('system/update_engine'),
+    create_pattern('system/vold'),
+    create_pattern('system/Other', 'system'),
+    create_pattern('toolchain'),
+    create_pattern('test'),
+    create_pattern('tools'),
     # match vendor/google* before vendor/
-    project_name_and_pattern('vendor/google', 'vendor/google.*'),
-    project_name_and_pattern('vendor/non-google', 'vendor'),
+    create_pattern('vendor/google', 'vendor/google.*'),
+    create_pattern('vendor/non-google', 'vendor'),
     # keep out/obj and other patterns at the end.
-    ['out/obj',
-     '.*/(gen|obj[^/]*)/(include|EXECUTABLES|SHARED_LIBRARIES|'
-     'STATIC_LIBRARIES|NATIVE_TESTS)/.*: warning:'],
+    [
+        'out/obj', '.*/(gen|obj[^/]*)/(include|EXECUTABLES|SHARED_LIBRARIES|'
+        'STATIC_LIBRARIES|NATIVE_TESTS)/.*: warning:'
+    ],
     ['other', '.*']  # all other unrecognized patterns
 ]
diff --git a/tools/warn/cpp_warn_patterns.py b/tools/warn/cpp_warn_patterns.py
index 8ae0a3c..0c458fb 100644
--- a/tools/warn/cpp_warn_patterns.py
+++ b/tools/warn/cpp_warn_patterns.py
@@ -1,4 +1,4 @@
-#
+# python3
 # Copyright (C) 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,563 +15,447 @@
 
 """Warning patterns for C/C++ compiler, but not clang-tidy."""
 
-from severity import Severity
+import re
 
-patterns = [
+# pylint:disable=relative-beyond-top-level
+# pylint:disable=g-importing-member
+from .severity import Severity
+
+
+def cpp_warn(severity, description, pattern_list):
+  return {
+      'category': 'C/C++',
+      'severity': severity,
+      'description': description,
+      'patterns': pattern_list
+  }
+
+
+def fixmenow(description, pattern_list):
+  return cpp_warn(Severity.FIXMENOW, description, pattern_list)
+
+
+def high(description, pattern_list):
+  return cpp_warn(Severity.HIGH, description, pattern_list)
+
+
+def medium(description, pattern_list):
+  return cpp_warn(Severity.MEDIUM, description, pattern_list)
+
+
+def low(description, pattern_list):
+  return cpp_warn(Severity.LOW, description, pattern_list)
+
+
+def skip(description, pattern_list):
+  return cpp_warn(Severity.SKIP, description, pattern_list)
+
+
+def harmless(description, pattern_list):
+  return cpp_warn(Severity.HARMLESS, description, pattern_list)
+
+
+warn_patterns = [
     # pylint:disable=line-too-long,g-inconsistent-quotes
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wimplicit-function-declaration',
-     'description': 'Implicit function declaration',
-     'patterns': [r".*: warning: implicit declaration of function .+",
-                  r".*: warning: implicitly declaring library function"]},
-    {'category': 'C/C++', 'severity': Severity.SKIP,
-     'description': 'skip, conflicting types for ...',
-     'patterns': [r".*: warning: conflicting types for '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Wtype-limits',
-     'description': 'Expression always evaluates to true or false',
-     'patterns': [r".*: warning: comparison is always .+ due to limited range of data type",
-                  r".*: warning: comparison of unsigned .*expression .+ is always true",
-                  r".*: warning: comparison of unsigned .*expression .+ is always false"]},
-    {'category': 'C/C++', 'severity': Severity.HIGH,
-     'description': 'Use transient memory for control value',
-     'patterns': [r".*: warning: .+Using such transient memory for the control value is .*dangerous."]},
-    {'category': 'C/C++', 'severity': Severity.HIGH,
-     'description': 'Return address of stack memory',
-     'patterns': [r".*: warning: Address of stack memory .+ returned to caller",
-                  r".*: warning: Address of stack memory .+ will be a dangling reference"]},
-    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': 'infinite-recursion',
-     'description': 'Infinite recursion',
-     'patterns': [r".*: warning: all paths through this function will call itself"]},
-    {'category': 'C/C++', 'severity': Severity.HIGH,
-     'description': 'Potential buffer overflow',
-     'patterns': [r".*: warning: Size argument is greater than .+ the destination buffer",
-                  r".*: warning: Potential buffer overflow.",
-                  r".*: warning: String copy function overflows destination buffer"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Incompatible pointer types',
-     'patterns': [r".*: warning: assignment from incompatible pointer type",
-                  r".*: warning: return from incompatible pointer type",
-                  r".*: warning: passing argument [0-9]+ of '.*' from incompatible pointer type",
-                  r".*: warning: initialization from incompatible pointer type"]},
-    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-fno-builtin',
-     'description': 'Incompatible declaration of built in function',
-     'patterns': [r".*: warning: incompatible implicit declaration of built-in function .+"]},
-    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Wincompatible-library-redeclaration',
-     'description': 'Incompatible redeclaration of library function',
-     'patterns': [r".*: warning: incompatible redeclaration of library function .+"]},
-    {'category': 'C/C++', 'severity': Severity.HIGH,
-     'description': 'Null passed as non-null argument',
-     'patterns': [r".*: warning: Null passed to a callee that requires a non-null"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunused-parameter',
-     'description': 'Unused parameter',
-     'patterns': [r".*: warning: unused parameter '.*'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunused',
-     'description': 'Unused function, variable, label, comparison, etc.',
-     'patterns': [r".*: warning: '.+' defined but not used",
-                  r".*: warning: unused function '.+'",
-                  r".*: warning: unused label '.+'",
-                  r".*: warning: relational comparison result unused",
-                  r".*: warning: lambda capture .* is not used",
-                  r".*: warning: private field '.+' is not used",
-                  r".*: warning: unused variable '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunused-value',
-     'description': 'Statement with no effect or result unused',
-     'patterns': [r".*: warning: statement with no effect",
-                  r".*: warning: expression result unused"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunused-result',
-     'description': 'Ignoreing return value of function',
-     'patterns': [r".*: warning: ignoring return value of function .+Wunused-result"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmissing-field-initializers',
-     'description': 'Missing initializer',
-     'patterns': [r".*: warning: missing initializer"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wdelete-non-virtual-dtor',
-     'description': 'Need virtual destructor',
-     'patterns': [r".*: warning: delete called .* has virtual functions but non-virtual destructor"]},
-    {'category': 'cont.', 'severity': Severity.SKIP,
-     'description': 'skip, near initialization for ...',
-     'patterns': [r".*: warning: \(near initialization for '.+'\)"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wdate-time',
-     'description': 'Expansion of data or time macro',
-     'patterns': [r".*: warning: expansion of date or time macro is not reproducible"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wexpansion-to-defined',
-     'description': 'Macro expansion has undefined behavior',
-     'patterns': [r".*: warning: macro expansion .* has undefined behavior"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wformat',
-     'description': 'Format string does not match arguments',
-     'patterns': [r".*: warning: format '.+' expects type '.+', but argument [0-9]+ has type '.+'",
-                  r".*: warning: more '%' conversions than data arguments",
-                  r".*: warning: data argument not used by format string",
-                  r".*: warning: incomplete format specifier",
-                  r".*: warning: unknown conversion type .* in format",
-                  r".*: warning: format .+ expects .+ but argument .+Wformat=",
-                  r".*: warning: field precision should have .+ but argument has .+Wformat",
-                  r".*: warning: format specifies type .+ but the argument has .*type .+Wformat"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wformat-extra-args',
-     'description': 'Too many arguments for format string',
-     'patterns': [r".*: warning: too many arguments for format"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Too many arguments in call',
-     'patterns': [r".*: warning: too many arguments in call to "]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wformat-invalid-specifier',
-     'description': 'Invalid format specifier',
-     'patterns': [r".*: warning: invalid .+ specifier '.+'.+format-invalid-specifier"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wsign-compare',
-     'description': 'Comparison between signed and unsigned',
-     'patterns': [r".*: warning: comparison between signed and unsigned",
-                  r".*: warning: comparison of promoted \~unsigned with unsigned",
-                  r".*: warning: signed and unsigned type in conditional expression"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Comparison between enum and non-enum',
-     'patterns': [r".*: warning: enumeral and non-enumeral type in conditional expression"]},
-    {'category': 'libpng', 'severity': Severity.MEDIUM,
-     'description': 'libpng: zero area',
-     'patterns': [r".*libpng warning: Ignoring attempt to set cHRM RGB triangle with zero area"]},
-    {'category': 'aapt', 'severity': Severity.MEDIUM,
-     'description': 'aapt: no comment for public symbol',
-     'patterns': [r".*: warning: No comment for public symbol .+"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmissing-braces',
-     'description': 'Missing braces around initializer',
-     'patterns': [r".*: warning: missing braces around initializer.*"]},
-    {'category': 'C/C++', 'severity': Severity.HARMLESS,
-     'description': 'No newline at end of file',
-     'patterns': [r".*: warning: no newline at end of file"]},
-    {'category': 'C/C++', 'severity': Severity.HARMLESS,
-     'description': 'Missing space after macro name',
-     'patterns': [r".*: warning: missing whitespace after the macro name"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wcast-align',
-     'description': 'Cast increases required alignment',
-     'patterns': [r".*: warning: cast from .* to .* increases required alignment .*"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wcast-qual',
-     'description': 'Qualifier discarded',
-     'patterns': [r".*: warning: passing argument [0-9]+ of '.+' discards qualifiers from pointer target type",
-                  r".*: warning: assignment discards qualifiers from pointer target type",
-                  r".*: warning: passing .+ to parameter of type .+ discards qualifiers",
-                  r".*: warning: assigning to .+ from .+ discards qualifiers",
-                  r".*: warning: initializing .+ discards qualifiers .+types-discards-qualifiers",
-                  r".*: warning: return discards qualifiers from pointer target type"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunknown-attributes',
-     'description': 'Unknown attribute',
-     'patterns': [r".*: warning: unknown attribute '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wignored-attributes',
-     'description': 'Attribute ignored',
-     'patterns': [r".*: warning: '_*packed_*' attribute ignored",
-                  r".*: warning: attribute declaration must precede definition .+ignored-attributes"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wvisibility',
-     'description': 'Visibility problem',
-     'patterns': [r".*: warning: declaration of '.+' will not be visible outside of this function"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wattributes',
-     'description': 'Visibility mismatch',
-     'patterns': [r".*: warning: '.+' declared with greater visibility than the type of its field '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Shift count greater than width of type',
-     'patterns': [r".*: warning: (left|right) shift count >= width of type"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wextern-initializer',
-     'description': 'extern &lt;foo&gt; is initialized',
-     'patterns': [r".*: warning: '.+' initialized and declared 'extern'",
-                  r".*: warning: 'extern' variable has an initializer"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wold-style-declaration',
-     'description': 'Old style declaration',
-     'patterns': [r".*: warning: 'static' is not at beginning of declaration"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wreturn-type',
-     'description': 'Missing return value',
-     'patterns': [r".*: warning: control reaches end of non-void function"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wimplicit-int',
-     'description': 'Implicit int type',
-     'patterns': [r".*: warning: type specifier missing, defaults to 'int'",
-                  r".*: warning: type defaults to 'int' in declaration of '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmain-return-type',
-     'description': 'Main function should return int',
-     'patterns': [r".*: warning: return type of 'main' is not 'int'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wuninitialized',
-     'description': 'Variable may be used uninitialized',
-     'patterns': [r".*: warning: '.+' may be used uninitialized in this function"]},
-    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Wuninitialized',
-     'description': 'Variable is used uninitialized',
-     'patterns': [r".*: warning: '.+' is used uninitialized in this function",
-                  r".*: warning: variable '.+' is uninitialized when used here"]},
-    {'category': 'ld', 'severity': Severity.MEDIUM, 'option': '-fshort-enums',
-     'description': 'ld: possible enum size mismatch',
-     'patterns': [r".*: warning: .* uses variable-size enums yet the output is to use 32-bit enums; use of enum values across objects may fail"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wpointer-sign',
-     'description': 'Pointer targets differ in signedness',
-     'patterns': [r".*: warning: pointer targets in initialization differ in signedness",
-                  r".*: warning: pointer targets in assignment differ in signedness",
-                  r".*: warning: pointer targets in return differ in signedness",
-                  r".*: warning: pointer targets in passing argument [0-9]+ of '.+' differ in signedness"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wstrict-overflow',
-     'description': 'Assuming overflow does not occur',
-     'patterns': [r".*: warning: assuming signed overflow does not occur when assuming that .* is always (true|false)"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wempty-body',
-     'description': 'Suggest adding braces around empty body',
-     'patterns': [r".*: warning: suggest braces around empty body in an 'if' statement",
-                  r".*: warning: empty body in an if-statement",
-                  r".*: warning: suggest braces around empty body in an 'else' statement",
-                  r".*: warning: empty body in an else-statement"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wparentheses',
-     'description': 'Suggest adding parentheses',
-     'patterns': [r".*: warning: suggest explicit braces to avoid ambiguous 'else'",
-                  r".*: warning: suggest parentheses around arithmetic in operand of '.+'",
-                  r".*: warning: suggest parentheses around comparison in operand of '.+'",
-                  r".*: warning: logical not is only applied to the left hand side of this comparison",
-                  r".*: warning: using the result of an assignment as a condition without parentheses",
-                  r".*: warning: .+ has lower precedence than .+ be evaluated first .+Wparentheses",
-                  r".*: warning: suggest parentheses around '.+?' .+ '.+?'",
-                  r".*: warning: suggest parentheses around assignment used as truth value"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Static variable used in non-static inline function',
-     'patterns': [r".*: warning: '.+' is static but used in inline function '.+' which is not static"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wimplicit int',
-     'description': 'No type or storage class (will default to int)',
-     'patterns': [r".*: warning: data definition has no type or storage class"]},
-    {'category': 'cont.', 'severity': Severity.SKIP,
-     'description': 'skip, parameter name (without types) in function declaration',
-     'patterns': [r".*: warning: parameter names \(without types\) in function declaration"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wstrict-aliasing',
-     'description': 'Dereferencing &lt;foo&gt; breaks strict aliasing rules',
-     'patterns': [r".*: warning: dereferencing .* break strict-aliasing rules"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wpointer-to-int-cast',
-     'description': 'Cast from pointer to integer of different size',
-     'patterns': [r".*: warning: cast from pointer to integer of different size",
-                  r".*: warning: initialization makes pointer from integer without a cast"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wint-to-pointer-cast',
-     'description': 'Cast to pointer from integer of different size',
-     'patterns': [r".*: warning: cast to pointer from integer of different size"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Macro redefined',
-     'patterns': [r".*: warning: '.+' macro redefined"]},
-    {'category': 'cont.', 'severity': Severity.SKIP,
-     'description': 'skip, ... location of the previous definition',
-     'patterns': [r".*: warning: this is the location of the previous definition"]},
-    {'category': 'ld', 'severity': Severity.MEDIUM,
-     'description': 'ld: type and size of dynamic symbol are not defined',
-     'patterns': [r".*: warning: type and size of dynamic symbol `.+' are not defined"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Pointer from integer without cast',
-     'patterns': [r".*: warning: assignment makes pointer from integer without a cast"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Pointer from integer without cast',
-     'patterns': [r".*: warning: passing argument [0-9]+ of '.+' makes pointer from integer without a cast"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Integer from pointer without cast',
-     'patterns': [r".*: warning: assignment makes integer from pointer without a cast"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Integer from pointer without cast',
-     'patterns': [r".*: warning: passing argument [0-9]+ of '.+' makes integer from pointer without a cast"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Integer from pointer without cast',
-     'patterns': [r".*: warning: return makes integer from pointer without a cast"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunknown-pragmas',
-     'description': 'Ignoring pragma',
-     'patterns': [r".*: warning: ignoring #pragma .+"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-W#pragma-messages',
-     'description': 'Pragma warning messages',
-     'patterns': [r".*: warning: .+W#pragma-messages"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wclobbered',
-     'description': 'Variable might be clobbered by longjmp or vfork',
-     'patterns': [r".*: warning: variable '.+' might be clobbered by 'longjmp' or 'vfork'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wclobbered',
-     'description': 'Argument might be clobbered by longjmp or vfork',
-     'patterns': [r".*: warning: argument '.+' might be clobbered by 'longjmp' or 'vfork'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wredundant-decls',
-     'description': 'Redundant declaration',
-     'patterns': [r".*: warning: redundant redeclaration of '.+'"]},
-    {'category': 'cont.', 'severity': Severity.SKIP,
-     'description': 'skip, previous declaration ... was here',
-     'patterns': [r".*: warning: previous declaration of '.+' was here"]},
-    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Wswitch-enum',
-     'description': 'Enum value not handled in switch',
-     'patterns': [r".*: warning: .*enumeration value.* not handled in switch.+Wswitch"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wuser-defined-warnings',
-     'description': 'User defined warnings',
-     'patterns': [r".*: warning: .* \[-Wuser-defined-warnings\]$"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Taking address of temporary',
-     'patterns': [r".*: warning: taking address of temporary"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Taking address of packed member',
-     'patterns': [r".*: warning: taking address of packed member"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Possible broken line continuation',
-     'patterns': [r".*: warning: backslash and newline separated by space"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wundefined-var-template',
-     'description': 'Undefined variable template',
-     'patterns': [r".*: warning: instantiation of variable .* no definition is available"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wundefined-inline',
-     'description': 'Inline function is not defined',
-     'patterns': [r".*: warning: inline function '.*' is not defined"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Excess elements in initializer',
-     'patterns': [r".*: warning: excess elements in .+ initializer"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Decimal constant is unsigned only in ISO C90',
-     'patterns': [r".*: warning: this decimal constant is unsigned only in ISO C90"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmain',
-     'description': 'main is usually a function',
-     'patterns': [r".*: warning: 'main' is usually a function"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Typedef ignored',
-     'patterns': [r".*: warning: 'typedef' was ignored in this declaration"]},
-    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Waddress',
-     'description': 'Address always evaluates to true',
-     'patterns': [r".*: warning: the address of '.+' will always evaluate as 'true'"]},
-    {'category': 'C/C++', 'severity': Severity.FIXMENOW,
-     'description': 'Freeing a non-heap object',
-     'patterns': [r".*: warning: attempt to free a non-heap object '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wchar-subscripts',
-     'description': 'Array subscript has type char',
-     'patterns': [r".*: warning: array subscript .+ type 'char'.+Wchar-subscripts"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Constant too large for type',
-     'patterns': [r".*: warning: integer constant is too large for '.+' type"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Woverflow',
-     'description': 'Constant too large for type, truncated',
-     'patterns': [r".*: warning: large integer implicitly truncated to unsigned type"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Winteger-overflow',
-     'description': 'Overflow in expression',
-     'patterns': [r".*: warning: overflow in expression; .*Winteger-overflow"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Woverflow',
-     'description': 'Overflow in implicit constant conversion',
-     'patterns': [r".*: warning: overflow in implicit constant conversion"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Declaration does not declare anything',
-     'patterns': [r".*: warning: declaration 'class .+' does not declare anything"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wreorder',
-     'description': 'Initialization order will be different',
-     'patterns': [r".*: warning: '.+' will be initialized after",
-                  r".*: warning: field .+ will be initialized after .+Wreorder"]},
-    {'category': 'cont.', 'severity': Severity.SKIP,
-     'description': 'skip,   ....',
-     'patterns': [r".*: warning:   '.+'"]},
-    {'category': 'cont.', 'severity': Severity.SKIP,
-     'description': 'skip,   base ...',
-     'patterns': [r".*: warning:   base '.+'"]},
-    {'category': 'cont.', 'severity': Severity.SKIP,
-     'description': 'skip,   when initialized here',
-     'patterns': [r".*: warning:   when initialized here"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmissing-parameter-type',
-     'description': 'Parameter type not specified',
-     'patterns': [r".*: warning: type of '.+' defaults to 'int'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmissing-declarations',
-     'description': 'Missing declarations',
-     'patterns': [r".*: warning: declaration does not declare anything"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmissing-noreturn',
-     'description': 'Missing noreturn',
-     'patterns': [r".*: warning: function '.*' could be declared with attribute 'noreturn'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'User warning',
-     'patterns': [r".*: warning: #warning "".+"""]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wvexing-parse',
-     'description': 'Vexing parsing problem',
-     'patterns': [r".*: warning: empty parentheses interpreted as a function declaration"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wextra',
-     'description': 'Dereferencing void*',
-     'patterns': [r".*: warning: dereferencing 'void \*' pointer"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Comparison of pointer and integer',
-     'patterns': [r".*: warning: ordered comparison of pointer with integer zero",
-                  r".*: warning: .*comparison between pointer and integer"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Use of error-prone unary operator',
-     'patterns': [r".*: warning: use of unary operator that may be intended as compound assignment"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wwrite-strings',
-     'description': 'Conversion of string constant to non-const char*',
-     'patterns': [r".*: warning: deprecated conversion from string constant to '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wstrict-prototypes',
-     'description': 'Function declaration isn''t a prototype',
-     'patterns': [r".*: warning: function declaration isn't a prototype"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wignored-qualifiers',
-     'description': 'Type qualifiers ignored on function return value',
-     'patterns': [r".*: warning: type qualifiers ignored on function return type",
-                  r".*: warning: .+ type qualifier .+ has no effect .+Wignored-qualifiers"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': '&lt;foo&gt; declared inside parameter list, scope limited to this definition',
-     'patterns': [r".*: warning: '.+' declared inside parameter list"]},
-    {'category': 'cont.', 'severity': Severity.SKIP,
-     'description': 'skip, its scope is only this ...',
-     'patterns': [r".*: warning: its scope is only this definition or declaration, which is probably not what you want"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wcomment',
-     'description': 'Line continuation inside comment',
-     'patterns': [r".*: warning: multi-line comment"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wcomment',
-     'description': 'Comment inside comment',
-     'patterns': [r".*: warning: '.+' within block comment .*-Wcomment"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wdeprecated-declarations',
-     'description': 'Deprecated declarations',
-     'patterns': [r".*: warning: .+ is deprecated.+deprecated-declarations"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wdeprecated-register',
-     'description': 'Deprecated register',
-     'patterns': [r".*: warning: 'register' storage class specifier is deprecated"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wpointer-sign',
-     'description': 'Converts between pointers to integer types with different sign',
-     'patterns': [r".*: warning: .+ converts between pointers to integer types with different sign"]},
-    {'category': 'C/C++', 'severity': Severity.HARMLESS,
-     'description': 'Extra tokens after #endif',
-     'patterns': [r".*: warning: extra tokens at end of #endif directive"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wenum-compare',
-     'description': 'Comparison between different enums',
-     'patterns': [r".*: warning: comparison between '.+' and '.+'.+Wenum-compare",
-                  r".*: warning: comparison of .* enumeration types .*-Wenum-compare-switch"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wconversion',
-     'description': 'Conversion may change value',
-     'patterns': [r".*: warning: converting negative value '.+' to '.+'",
-                  r".*: warning: conversion to '.+' .+ may (alter|change)"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wconversion-null',
-     'description': 'Converting to non-pointer type from NULL',
-     'patterns': [r".*: warning: converting to non-pointer type '.+' from NULL"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wsign-conversion',
-     'description': 'Implicit sign conversion',
-     'patterns': [r".*: warning: implicit conversion changes signedness"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wnull-conversion',
-     'description': 'Converting NULL to non-pointer type',
-     'patterns': [r".*: warning: implicit conversion of NULL constant to '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wnon-literal-null-conversion',
-     'description': 'Zero used as null pointer',
-     'patterns': [r".*: warning: expression .* zero treated as a null pointer constant"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Implicit conversion changes value or loses precision',
-     'patterns': [r".*: warning: implicit conversion .* changes value from .* to .*-conversion",
-                  r".*: warning: implicit conversion loses integer precision:"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Passing NULL as non-pointer argument',
-     'patterns': [r".*: warning: passing NULL to non-pointer argument [0-9]+ of '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wctor-dtor-privacy',
-     'description': 'Class seems unusable because of private ctor/dtor',
-     'patterns': [r".*: warning: all member functions in class '.+' are private"]},
+    medium('Implicit function declaration',
+           [r".*: warning: implicit declaration of function .+",
+            r".*: warning: implicitly declaring library function"]),
+    skip('skip, conflicting types for ...',
+         [r".*: warning: conflicting types for '.+'"]),
+    high('Expression always evaluates to true or false',
+         [r".*: warning: comparison is always .+ due to limited range of data type",
+          r".*: warning: comparison of unsigned .*expression .+ is always true",
+          r".*: warning: comparison of unsigned .*expression .+ is always false"]),
+    high('Use transient memory for control value',
+         [r".*: warning: .+Using such transient memory for the control value is .*dangerous."]),
+    high('Return address of stack memory',
+         [r".*: warning: Address of stack memory .+ returned to caller",
+          r".*: warning: Address of stack memory .+ will be a dangling reference"]),
+    high('Infinite recursion',
+         [r".*: warning: all paths through this function will call itself"]),
+    high('Potential buffer overflow',
+         [r".*: warning: Size argument is greater than .+ the destination buffer",
+          r".*: warning: Potential buffer overflow.",
+          r".*: warning: String copy function overflows destination buffer"]),
+    medium('Incompatible pointer types',
+           [r".*: warning: assignment from incompatible pointer type",
+            r".*: warning: return from incompatible pointer type",
+            r".*: warning: passing argument [0-9]+ of '.*' from incompatible pointer type",
+            r".*: warning: initialization from incompatible pointer type"]),
+    high('Incompatible declaration of built in function',
+         [r".*: warning: incompatible implicit declaration of built-in function .+"]),
+    high('Incompatible redeclaration of library function',
+         [r".*: warning: incompatible redeclaration of library function .+"]),
+    high('Null passed as non-null argument',
+         [r".*: warning: Null passed to a callee that requires a non-null"]),
+    medium('Unused parameter',
+           [r".*: warning: unused parameter '.*'"]),
+    medium('Unused function, variable, label, comparison, etc.',
+           [r".*: warning: '.+' defined but not used",
+            r".*: warning: unused function '.+'",
+            r".*: warning: unused label '.+'",
+            r".*: warning: relational comparison result unused",
+            r".*: warning: lambda capture .* is not used",
+            r".*: warning: private field '.+' is not used",
+            r".*: warning: unused variable '.+'"]),
+    medium('Statement with no effect or result unused',
+           [r".*: warning: statement with no effect",
+            r".*: warning: expression result unused"]),
+    medium('Ignoreing return value of function',
+           [r".*: warning: ignoring return value of function .+Wunused-result"]),
+    medium('Missing initializer',
+           [r".*: warning: missing initializer"]),
+    medium('Need virtual destructor',
+           [r".*: warning: delete called .* has virtual functions but non-virtual destructor"]),
+    skip('skip, near initialization for ...',
+         [r".*: warning: \(near initialization for '.+'\)"]),
+    medium('Expansion of data or time macro',
+           [r".*: warning: expansion of date or time macro is not reproducible"]),
+    medium('Macro expansion has undefined behavior',
+           [r".*: warning: macro expansion .* has undefined behavior"]),
+    medium('Format string does not match arguments',
+           [r".*: warning: format '.+' expects type '.+', but argument [0-9]+ has type '.+'",
+            r".*: warning: more '%' conversions than data arguments",
+            r".*: warning: data argument not used by format string",
+            r".*: warning: incomplete format specifier",
+            r".*: warning: unknown conversion type .* in format",
+            r".*: warning: format .+ expects .+ but argument .+Wformat=",
+            r".*: warning: field precision should have .+ but argument has .+Wformat",
+            r".*: warning: format specifies type .+ but the argument has .*type .+Wformat"]),
+    medium('Too many arguments for format string',
+           [r".*: warning: too many arguments for format"]),
+    medium('Too many arguments in call',
+           [r".*: warning: too many arguments in call to "]),
+    medium('Invalid format specifier',
+           [r".*: warning: invalid .+ specifier '.+'.+format-invalid-specifier"]),
+    medium('Comparison between signed and unsigned',
+           [r".*: warning: comparison between signed and unsigned",
+            r".*: warning: comparison of promoted \~unsigned with unsigned",
+            r".*: warning: signed and unsigned type in conditional expression"]),
+    medium('Comparison between enum and non-enum',
+           [r".*: warning: enumeral and non-enumeral type in conditional expression"]),
+    medium('libpng: zero area',
+           [r".*libpng warning: Ignoring attempt to set cHRM RGB triangle with zero area"]),
+    medium('Missing braces around initializer',
+           [r".*: warning: missing braces around initializer.*"]),
+    harmless('No newline at end of file',
+             [r".*: warning: no newline at end of file"]),
+    harmless('Missing space after macro name',
+             [r".*: warning: missing whitespace after the macro name"]),
+    low('Cast increases required alignment',
+        [r".*: warning: cast from .* to .* increases required alignment .*"]),
+    medium('Qualifier discarded',
+           [r".*: warning: passing argument [0-9]+ of '.+' discards qualifiers from pointer target type",
+            r".*: warning: assignment discards qualifiers from pointer target type",
+            r".*: warning: passing .+ to parameter of type .+ discards qualifiers",
+            r".*: warning: assigning to .+ from .+ discards qualifiers",
+            r".*: warning: initializing .+ discards qualifiers .+types-discards-qualifiers",
+            r".*: warning: return discards qualifiers from pointer target type"]),
+    medium('Unknown attribute',
+           [r".*: warning: unknown attribute '.+'"]),
+    medium('Attribute ignored',
+           [r".*: warning: '_*packed_*' attribute ignored",
+            r".*: warning: attribute declaration must precede definition .+ignored-attributes"]),
+    medium('Visibility problem',
+           [r".*: warning: declaration of '.+' will not be visible outside of this function"]),
+    medium('Visibility mismatch',
+           [r".*: warning: '.+' declared with greater visibility than the type of its field '.+'"]),
+    medium('Shift count greater than width of type',
+           [r".*: warning: (left|right) shift count >= width of type"]),
+    medium('extern &lt;foo&gt; is initialized',
+           [r".*: warning: '.+' initialized and declared 'extern'",
+            r".*: warning: 'extern' variable has an initializer"]),
+    medium('Old style declaration',
+           [r".*: warning: 'static' is not at beginning of declaration"]),
+    medium('Missing return value',
+           [r".*: warning: control reaches end of non-void function"]),
+    medium('Implicit int type',
+           [r".*: warning: type specifier missing, defaults to 'int'",
+            r".*: warning: type defaults to 'int' in declaration of '.+'"]),
+    medium('Main function should return int',
+           [r".*: warning: return type of 'main' is not 'int'"]),
+    medium('Variable may be used uninitialized',
+           [r".*: warning: '.+' may be used uninitialized in this function"]),
+    high('Variable is used uninitialized',
+         [r".*: warning: '.+' is used uninitialized in this function",
+          r".*: warning: variable '.+' is uninitialized when used here"]),
+    medium('ld: possible enum size mismatch',
+           [r".*: warning: .* uses variable-size enums yet the output is to use 32-bit enums; use of enum values across objects may fail"]),
+    medium('Pointer targets differ in signedness',
+           [r".*: warning: pointer targets in initialization differ in signedness",
+            r".*: warning: pointer targets in assignment differ in signedness",
+            r".*: warning: pointer targets in return differ in signedness",
+            r".*: warning: pointer targets in passing argument [0-9]+ of '.+' differ in signedness"]),
+    medium('Assuming overflow does not occur',
+           [r".*: warning: assuming signed overflow does not occur when assuming that .* is always (true|false)"]),
+    medium('Suggest adding braces around empty body',
+           [r".*: warning: suggest braces around empty body in an 'if' statement",
+            r".*: warning: empty body in an if-statement",
+            r".*: warning: suggest braces around empty body in an 'else' statement",
+            r".*: warning: empty body in an else-statement"]),
+    medium('Suggest adding parentheses',
+           [r".*: warning: suggest explicit braces to avoid ambiguous 'else'",
+            r".*: warning: suggest parentheses around arithmetic in operand of '.+'",
+            r".*: warning: suggest parentheses around comparison in operand of '.+'",
+            r".*: warning: logical not is only applied to the left hand side of this comparison",
+            r".*: warning: using the result of an assignment as a condition without parentheses",
+            r".*: warning: .+ has lower precedence than .+ be evaluated first .+Wparentheses",
+            r".*: warning: suggest parentheses around '.+?' .+ '.+?'",
+            r".*: warning: suggest parentheses around assignment used as truth value"]),
+    medium('Static variable used in non-static inline function',
+           [r".*: warning: '.+' is static but used in inline function '.+' which is not static"]),
+    medium('No type or storage class (will default to int)',
+           [r".*: warning: data definition has no type or storage class"]),
+    skip('skip, parameter name (without types) in function declaration',
+         [r".*: warning: parameter names \(without types\) in function declaration"]),
+    medium('Dereferencing &lt;foo&gt; breaks strict aliasing rules',
+           [r".*: warning: dereferencing .* break strict-aliasing rules"]),
+    medium('Cast from pointer to integer of different size',
+           [r".*: warning: cast from pointer to integer of different size",
+            r".*: warning: initialization makes pointer from integer without a cast"]),
+    medium('Cast to pointer from integer of different size',
+           [r".*: warning: cast to pointer from integer of different size"]),
+    medium('Macro redefined',
+           [r".*: warning: '.+' macro redefined"]),
+    skip('skip, ... location of the previous definition',
+         [r".*: warning: this is the location of the previous definition"]),
+    medium('ld: type and size of dynamic symbol are not defined',
+           [r".*: warning: type and size of dynamic symbol `.+' are not defined"]),
+    medium('Pointer from integer without cast',
+           [r".*: warning: assignment makes pointer from integer without a cast"]),
+    medium('Pointer from integer without cast',
+           [r".*: warning: passing argument [0-9]+ of '.+' makes pointer from integer without a cast"]),
+    medium('Integer from pointer without cast',
+           [r".*: warning: assignment makes integer from pointer without a cast"]),
+    medium('Integer from pointer without cast',
+           [r".*: warning: passing argument [0-9]+ of '.+' makes integer from pointer without a cast"]),
+    medium('Integer from pointer without cast',
+           [r".*: warning: return makes integer from pointer without a cast"]),
+    medium('Ignoring pragma',
+           [r".*: warning: ignoring #pragma .+"]),
+    medium('Pragma warning messages',
+           [r".*: warning: .+W#pragma-messages"]),
+    medium('Variable might be clobbered by longjmp or vfork',
+           [r".*: warning: variable '.+' might be clobbered by 'longjmp' or 'vfork'"]),
+    medium('Argument might be clobbered by longjmp or vfork',
+           [r".*: warning: argument '.+' might be clobbered by 'longjmp' or 'vfork'"]),
+    medium('Redundant declaration',
+           [r".*: warning: redundant redeclaration of '.+'"]),
+    skip('skip, previous declaration ... was here',
+         [r".*: warning: previous declaration of '.+' was here"]),
+    high('Enum value not handled in switch',
+         [r".*: warning: .*enumeration value.* not handled in switch.+Wswitch"]),
+    medium('User defined warnings',
+           [r".*: warning: .* \[-Wuser-defined-warnings\]$"]),
+    medium('Taking address of temporary',
+           [r".*: warning: taking address of temporary"]),
+    medium('Taking address of packed member',
+           [r".*: warning: taking address of packed member"]),
+    medium('Possible broken line continuation',
+           [r".*: warning: backslash and newline separated by space"]),
+    medium('Undefined variable template',
+           [r".*: warning: instantiation of variable .* no definition is available"]),
+    medium('Inline function is not defined',
+           [r".*: warning: inline function '.*' is not defined"]),
+    medium('Excess elements in initializer',
+           [r".*: warning: excess elements in .+ initializer"]),
+    medium('Decimal constant is unsigned only in ISO C90',
+           [r".*: warning: this decimal constant is unsigned only in ISO C90"]),
+    medium('main is usually a function',
+           [r".*: warning: 'main' is usually a function"]),
+    medium('Typedef ignored',
+           [r".*: warning: 'typedef' was ignored in this declaration"]),
+    high('Address always evaluates to true',
+         [r".*: warning: the address of '.+' will always evaluate as 'true'"]),
+    fixmenow('Freeing a non-heap object',
+             [r".*: warning: attempt to free a non-heap object '.+'"]),
+    medium('Array subscript has type char',
+           [r".*: warning: array subscript .+ type 'char'.+Wchar-subscripts"]),
+    medium('Constant too large for type',
+           [r".*: warning: integer constant is too large for '.+' type"]),
+    medium('Constant too large for type, truncated',
+           [r".*: warning: large integer implicitly truncated to unsigned type"]),
+    medium('Overflow in expression',
+           [r".*: warning: overflow in expression; .*Winteger-overflow"]),
+    medium('Overflow in implicit constant conversion',
+           [r".*: warning: overflow in implicit constant conversion"]),
+    medium('Declaration does not declare anything',
+           [r".*: warning: declaration 'class .+' does not declare anything"]),
+    medium('Initialization order will be different',
+           [r".*: warning: '.+' will be initialized after",
+            r".*: warning: field .+ will be initialized after .+Wreorder"]),
+    skip('skip,   ....',
+         [r".*: warning:   '.+'"]),
+    skip('skip,   base ...',
+         [r".*: warning:   base '.+'"]),
+    skip('skip,   when initialized here',
+         [r".*: warning:   when initialized here"]),
+    medium('Parameter type not specified',
+           [r".*: warning: type of '.+' defaults to 'int'"]),
+    medium('Missing declarations',
+           [r".*: warning: declaration does not declare anything"]),
+    medium('Missing noreturn',
+           [r".*: warning: function '.*' could be declared with attribute 'noreturn'"]),
+    medium('User warning',
+           [r".*: warning: #warning "".+"""]),
+    medium('Vexing parsing problem',
+           [r".*: warning: empty parentheses interpreted as a function declaration"]),
+    medium('Dereferencing void*',
+           [r".*: warning: dereferencing 'void \*' pointer"]),
+    medium('Comparison of pointer and integer',
+           [r".*: warning: ordered comparison of pointer with integer zero",
+            r".*: warning: .*comparison between pointer and integer"]),
+    medium('Use of error-prone unary operator',
+           [r".*: warning: use of unary operator that may be intended as compound assignment"]),
+    medium('Conversion of string constant to non-const char*',
+           [r".*: warning: deprecated conversion from string constant to '.+'"]),
+    medium('Function declaration isn''t a prototype',
+           [r".*: warning: function declaration isn't a prototype"]),
+    medium('Type qualifiers ignored on function return value',
+           [r".*: warning: type qualifiers ignored on function return type",
+            r".*: warning: .+ type qualifier .+ has no effect .+Wignored-qualifiers"]),
+    medium('&lt;foo&gt; declared inside parameter list, scope limited to this definition',
+           [r".*: warning: '.+' declared inside parameter list"]),
+    skip('skip, its scope is only this ...',
+         [r".*: warning: its scope is only this definition or declaration, which is probably not what you want"]),
+    low('Line continuation inside comment',
+        [r".*: warning: multi-line comment"]),
+    low('Comment inside comment',
+        [r".*: warning: '.+' within block comment .*-Wcomment"]),
+    low('Deprecated declarations',
+        [r".*: warning: .+ is deprecated.+deprecated-declarations"]),
+    low('Deprecated register',
+        [r".*: warning: 'register' storage class specifier is deprecated"]),
+    low('Converts between pointers to integer types with different sign',
+        [r".*: warning: .+ converts between pointers to integer types with different sign"]),
+    harmless('Extra tokens after #endif',
+             [r".*: warning: extra tokens at end of #endif directive"]),
+    medium('Comparison between different enums',
+           [r".*: warning: comparison between '.+' and '.+'.+Wenum-compare",
+            r".*: warning: comparison of .* enumeration types .*-Wenum-compare-switch"]),
+    medium('Conversion may change value',
+           [r".*: warning: converting negative value '.+' to '.+'",
+            r".*: warning: conversion to '.+' .+ may (alter|change)"]),
+    medium('Converting to non-pointer type from NULL',
+           [r".*: warning: converting to non-pointer type '.+' from NULL"]),
+    medium('Implicit sign conversion',
+           [r".*: warning: implicit conversion changes signedness"]),
+    medium('Converting NULL to non-pointer type',
+           [r".*: warning: implicit conversion of NULL constant to '.+'"]),
+    medium('Zero used as null pointer',
+           [r".*: warning: expression .* zero treated as a null pointer constant"]),
+    medium('Compare pointer to null character',
+           [r".*: warning: comparing a pointer to a null character constant"]),
+    medium('Implicit conversion changes value or loses precision',
+           [r".*: warning: implicit conversion .* changes value from .* to .*-conversion",
+            r".*: warning: implicit conversion loses integer precision:"]),
+    medium('Passing NULL as non-pointer argument',
+           [r".*: warning: passing NULL to non-pointer argument [0-9]+ of '.+'"]),
+    medium('Class seems unusable because of private ctor/dtor',
+           [r".*: warning: all member functions in class '.+' are private"]),
     # skip this next one, because it only points out some RefBase-based classes
     # where having a private destructor is perfectly fine
-    {'category': 'C/C++', 'severity': Severity.SKIP, 'option': '-Wctor-dtor-privacy',
-     'description': 'Class seems unusable because of private ctor/dtor',
-     'patterns': [r".*: warning: 'class .+' only defines a private destructor and has no friends"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wctor-dtor-privacy',
-     'description': 'Class seems unusable because of private ctor/dtor',
-     'patterns': [r".*: warning: 'class .+' only defines private constructors and has no friends"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wgnu-static-float-init',
-     'description': 'In-class initializer for static const float/double',
-     'patterns': [r".*: warning: in-class initializer for static data member of .+const (float|double)"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wpointer-arith',
-     'description': 'void* used in arithmetic',
-     'patterns': [r".*: warning: pointer of type 'void \*' used in (arithmetic|subtraction)",
-                  r".*: warning: arithmetic on .+ to void is a GNU extension.*Wpointer-arith",
-                  r".*: warning: wrong type argument to increment"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wsign-promo',
-     'description': 'Overload resolution chose to promote from unsigned or enum to signed type',
-     'patterns': [r".*: warning: passing '.+' chooses '.+' over '.+'.*Wsign-promo"]},
-    {'category': 'cont.', 'severity': Severity.SKIP,
-     'description': 'skip,   in call to ...',
-     'patterns': [r".*: warning:   in call to '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Wextra',
-     'description': 'Base should be explicitly initialized in copy constructor',
-     'patterns': [r".*: warning: base class '.+' should be explicitly initialized in the copy constructor"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Return value from void function',
-     'patterns': [r".*: warning: 'return' with a value, in function returning void"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'multichar',
-     'description': 'Multi-character character constant',
-     'patterns': [r".*: warning: multi-character character constant"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'writable-strings',
-     'description': 'Conversion from string literal to char*',
-     'patterns': [r".*: warning: .+ does not allow conversion from string literal to 'char \*'"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wextra-semi',
-     'description': 'Extra \';\'',
-     'patterns': [r".*: warning: extra ';' .+extra-semi"]},
-    {'category': 'C/C++', 'severity': Severity.LOW,
-     'description': 'Useless specifier',
-     'patterns': [r".*: warning: useless storage class specifier in empty declaration"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wduplicate-decl-specifier',
-     'description': 'Duplicate declaration specifier',
-     'patterns': [r".*: warning: duplicate '.+' declaration specifier"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': 'tautological-compare',
-     'description': 'Comparison of self is always false',
-     'patterns': [r".*: self-comparison always evaluates to false"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': 'constant-logical-operand',
-     'description': 'Logical op with constant operand',
-     'patterns': [r".*: use of logical '.+' with constant operand"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': 'literal-suffix',
-     'description': 'Needs a space between literal and string macro',
-     'patterns': [r".*: warning: invalid suffix on literal.+ requires a space .+Wliteral-suffix"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '#warnings',
-     'description': 'Warnings from #warning',
-     'patterns': [r".*: warning: .+-W#warnings"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': 'absolute-value',
-     'description': 'Using float/int absolute value function with int/float argument',
-     'patterns': [r".*: warning: using .+ absolute value function .+ when argument is .+ type .+Wabsolute-value",
-                  r".*: warning: absolute value function '.+' given .+ which may cause truncation .+Wabsolute-value"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wc++11-extensions',
-     'description': 'Using C++11 extensions',
-     'patterns': [r".*: warning: 'auto' type specifier is a C\+\+11 extension"]},
-    {'category': 'C/C++', 'severity': Severity.LOW,
-     'description': 'Refers to implicitly defined namespace',
-     'patterns': [r".*: warning: using directive refers to implicitly-defined namespace .+"]},
-    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Winvalid-pp-token',
-     'description': 'Invalid pp token',
-     'patterns': [r".*: warning: missing .+Winvalid-pp-token"]},
-    {'category': 'link', 'severity': Severity.LOW,
-     'description': 'need glibc to link',
-     'patterns': [r".*: warning: .* requires at runtime .* glibc .* for linking"]},
-
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Operator new returns NULL',
-     'patterns': [r".*: warning: 'operator new' must not return NULL unless it is declared 'throw\(\)' .+"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wnull-arithmetic',
-     'description': 'NULL used in arithmetic',
-     'patterns': [r".*: warning: NULL used in arithmetic",
-                  r".*: warning: comparison between NULL and non-pointer"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'header-guard',
-     'description': 'Misspelled header guard',
-     'patterns': [r".*: warning: '.+' is used as a header guard .+ followed by .+ different macro"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'empty-body',
-     'description': 'Empty loop body',
-     'patterns': [r".*: warning: .+ loop has empty body"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'enum-conversion',
-     'description': 'Implicit conversion from enumeration type',
-     'patterns': [r".*: warning: implicit conversion from enumeration type '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'switch',
-     'description': 'case value not in enumerated type',
-     'patterns': [r".*: warning: case value not in enumerated type '.+'"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Use of deprecated method',
-     'patterns': [r".*: warning: '.+' is deprecated .+"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Use of garbage or uninitialized value',
-     'patterns': [r".*: warning: .+ uninitialized .+\[-Wsometimes-uninitialized\]"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wsizeof-array-argument',
-     'description': 'Sizeof on array argument',
-     'patterns': [r".*: warning: sizeof on array function parameter will return"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wsizeof-pointer-memacces',
-     'description': 'Bad argument size of memory access functions',
-     'patterns': [r".*: warning: .+\[-Wsizeof-pointer-memaccess\]"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Return value not checked',
-     'patterns': [r".*: warning: The return value from .+ is not checked"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Possible heap pollution',
-     'patterns': [r".*: warning: .*Possible heap pollution from .+ type .+"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wfor-loop-analysis',
-     'description': 'Variable used in loop condition not modified in loop body',
-     'patterns': [r".*: warning: variable '.+' used in loop condition.*Wfor-loop-analysis"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM,
-     'description': 'Closing a previously closed file',
-     'patterns': [r".*: warning: Closing a previously closed file"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunnamed-type-template-args',
-     'description': 'Unnamed template type argument',
-     'patterns': [r".*: warning: template argument.+Wunnamed-type-template-args"]},
-    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wimplicit-fallthrough',
-     'description': 'Unannotated fall-through between switch labels',
-     'patterns': [r".*: warning: unannotated fall-through between switch labels.+Wimplicit-fallthrough"]},
-    {'category': 'C/C++', 'severity': Severity.HARMLESS,
-     'description': 'Discarded qualifier from pointer target type',
-     'patterns': [r".*: warning: .+ discards '.+' qualifier from pointer target type"]},
-    {'category': 'C/C++', 'severity': Severity.HARMLESS,
-     'description': 'Use snprintf instead of sprintf',
-     'patterns': [r".*: warning: .*sprintf is often misused; please use snprintf"]},
-    {'category': 'C/C++', 'severity': Severity.HARMLESS,
-     'description': 'Unsupported optimizaton flag',
-     'patterns': [r".*: warning: optimization flag '.+' is not supported"]},
-    {'category': 'C/C++', 'severity': Severity.HARMLESS,
-     'description': 'Extra or missing parentheses',
-     'patterns': [r".*: warning: equality comparison with extraneous parentheses",
-                  r".*: warning: .+ within .+Wlogical-op-parentheses"]},
-    {'category': 'C/C++', 'severity': Severity.HARMLESS, 'option': 'mismatched-tags',
-     'description': 'Mismatched class vs struct tags',
-     'patterns': [r".*: warning: '.+' defined as a .+ here but previously declared as a .+mismatched-tags",
-                  r".*: warning: .+ was previously declared as a .+mismatched-tags"]},
+    skip('Class seems unusable because of private ctor/dtor',
+         [r".*: warning: 'class .+' only defines a private destructor and has no friends"]),
+    medium('Class seems unusable because of private ctor/dtor',
+           [r".*: warning: 'class .+' only defines private constructors and has no friends"]),
+    medium('In-class initializer for static const float/double',
+           [r".*: warning: in-class initializer for static data member of .+const (float|double)"]),
+    medium('void* used in arithmetic',
+           [r".*: warning: pointer of type 'void \*' used in (arithmetic|subtraction)",
+            r".*: warning: arithmetic on .+ to void is a GNU extension.*Wpointer-arith",
+            r".*: warning: wrong type argument to increment"]),
+    medium('Overload resolution chose to promote from unsigned or enum to signed type',
+           [r".*: warning: passing '.+' chooses '.+' over '.+'.*Wsign-promo"]),
+    skip('skip,   in call to ...',
+         [r".*: warning:   in call to '.+'"]),
+    high('Base should be explicitly initialized in copy constructor',
+         [r".*: warning: base class '.+' should be explicitly initialized in the copy constructor"]),
+    medium('Return value from void function',
+           [r".*: warning: 'return' with a value, in function returning void"]),
+    medium('Multi-character character constant',
+           [r".*: warning: multi-character character constant"]),
+    medium('Conversion from string literal to char*',
+           [r".*: warning: .+ does not allow conversion from string literal to 'char \*'"]),
+    low('Extra \';\'',
+        [r".*: warning: extra ';' .+extra-semi"]),
+    low('Useless specifier',
+        [r".*: warning: useless storage class specifier in empty declaration"]),
+    low('Duplicate declaration specifier',
+        [r".*: warning: duplicate '.+' declaration specifier"]),
+    low('Comparison of self is always false',
+        [r".*: self-comparison always evaluates to false"]),
+    low('Logical op with constant operand',
+        [r".*: use of logical '.+' with constant operand"]),
+    low('Needs a space between literal and string macro',
+        [r".*: warning: invalid suffix on literal.+ requires a space .+Wliteral-suffix"]),
+    low('Warnings from #warning',
+        [r".*: warning: .+-W#warnings"]),
+    low('Using float/int absolute value function with int/float argument',
+        [r".*: warning: using .+ absolute value function .+ when argument is .+ type .+Wabsolute-value",
+         r".*: warning: absolute value function '.+' given .+ which may cause truncation .+Wabsolute-value"]),
+    low('Using C++11 extensions',
+        [r".*: warning: 'auto' type specifier is a C\+\+11 extension"]),
+    low('Refers to implicitly defined namespace',
+        [r".*: warning: using directive refers to implicitly-defined namespace .+"]),
+    low('Invalid pp token',
+        [r".*: warning: missing .+Winvalid-pp-token"]),
+    low('need glibc to link',
+        [r".*: warning: .* requires at runtime .* glibc .* for linking"]),
+    medium('Operator new returns NULL',
+           [r".*: warning: 'operator new' must not return NULL unless it is declared 'throw\(\)' .+"]),
+    medium('NULL used in arithmetic',
+           [r".*: warning: NULL used in arithmetic",
+            r".*: warning: comparison between NULL and non-pointer"]),
+    medium('Misspelled header guard',
+           [r".*: warning: '.+' is used as a header guard .+ followed by .+ different macro"]),
+    medium('Empty loop body',
+           [r".*: warning: .+ loop has empty body"]),
+    medium('Implicit conversion from enumeration type',
+           [r".*: warning: implicit conversion from enumeration type '.+'"]),
+    medium('case value not in enumerated type',
+           [r".*: warning: case value not in enumerated type '.+'"]),
+    medium('Use of deprecated method',
+           [r".*: warning: '.+' is deprecated .+"]),
+    medium('Use of garbage or uninitialized value',
+           [r".*: warning: .+ uninitialized .+\[-Wsometimes-uninitialized\]"]),
+    medium('Sizeof on array argument',
+           [r".*: warning: sizeof on array function parameter will return"]),
+    medium('Bad argument size of memory access functions',
+           [r".*: warning: .+\[-Wsizeof-pointer-memaccess\]"]),
+    medium('Return value not checked',
+           [r".*: warning: The return value from .+ is not checked"]),
+    medium('Possible heap pollution',
+           [r".*: warning: .*Possible heap pollution from .+ type .+"]),
+    medium('Variable used in loop condition not modified in loop body',
+           [r".*: warning: variable '.+' used in loop condition.*Wfor-loop-analysis"]),
+    medium('Closing a previously closed file',
+           [r".*: warning: Closing a previously closed file"]),
+    medium('Unnamed template type argument',
+           [r".*: warning: template argument.+Wunnamed-type-template-args"]),
+    medium('Unannotated fall-through between switch labels',
+           [r".*: warning: unannotated fall-through between switch labels.+Wimplicit-fallthrough"]),
+    harmless('Discarded qualifier from pointer target type',
+             [r".*: warning: .+ discards '.+' qualifier from pointer target type"]),
+    harmless('Use snprintf instead of sprintf',
+             [r".*: warning: .*sprintf is often misused; please use snprintf"]),
+    harmless('Unsupported optimizaton flag',
+             [r".*: warning: optimization flag '.+' is not supported"]),
+    harmless('Extra or missing parentheses',
+             [r".*: warning: equality comparison with extraneous parentheses",
+              r".*: warning: .+ within .+Wlogical-op-parentheses"]),
+    harmless('Mismatched class vs struct tags',
+             [r".*: warning: '.+' defined as a .+ here but previously declared as a .+mismatched-tags",
+              r".*: warning: .+ was previously declared as a .+mismatched-tags"]),
 ]
+
+
+def compile_patterns(patterns):
+  """Precompiling every pattern speeds up parsing by about 30x."""
+  for i in patterns:
+    i['compiled_patterns'] = []
+    for pat in i['patterns']:
+      i['compiled_patterns'].append(re.compile(pat))
+
+
+compile_patterns(warn_patterns)
diff --git a/tools/warn/java_warn_patterns.py b/tools/warn/java_warn_patterns.py
index 696ce9a..3a3a676 100644
--- a/tools/warn/java_warn_patterns.py
+++ b/tools/warn/java_warn_patterns.py
@@ -1,4 +1,4 @@
-#
+# python3
 # Copyright (C) 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,7 +15,10 @@
 
 """Warning patterns for Java compiler tools."""
 
-from severity import Severity
+# pylint:disable=relative-beyond-top-level
+from .cpp_warn_patterns import compile_patterns
+# pylint:disable=g-importing-member
+from .severity import Severity
 
 
 def java_warn(severity, description, pattern_list):
@@ -39,11 +42,12 @@
   return java_warn(Severity.LOW, description, pattern_list)
 
 
-patterns = [
+warn_patterns = [
     # pylint:disable=line-too-long,g-inconsistent-quotes
     # Warnings from Javac
-    java_medium('Use of deprecated member',
-                [r'.*: warning: \[deprecation\] .+']),
+    java_medium('Use of deprecated',
+                [r'.*: warning: \[deprecation\] .+',
+                 r'.*: warning: \[removal\] .+ has been deprecated and marked for removal$']),
     java_medium('Unchecked conversion',
                 [r'.*: warning: \[unchecked\] .+']),
     # Warnings generated by Error Prone
@@ -125,6 +129,8 @@
              [r".*: warning: \[UseBinds\] .+"]),
     java_low('Wildcard imports, static or otherwise, should not be used',
              [r".*: warning: \[WildcardImport\] .+"]),
+    java_medium('AcronymName',
+                [r".*\.java:.*: warning: .+ \[AcronymName\]$"]),
     java_medium('Method reference is ambiguous',
                 [r".*: warning: \[AmbiguousMethodReference\] .+"]),
     java_medium('This method passes a pair of parameters through to String.format, but the enclosing method wasn\'t annotated @FormatMethod. Doing so gives compile-time rather than run-time protection against malformed format strings.',
@@ -265,6 +271,8 @@
                 [r".*: warning: \[InstanceOfAndCastMatchWrongType\] .+"]),
     java_medium('Expression of type int may overflow before being assigned to a long',
                 [r".*: warning: \[IntLongMath\] .+"]),
+    java_medium('IntentBuilderName',
+                [r".*\.java:.*: warning: .+ \[IntentBuilderName\]$"]),
     java_medium('This @param tag doesn\'t refer to a parameter of the method.',
                 [r".*: warning: \[InvalidParam\] .+"]),
     java_medium('This tag is invalid.',
@@ -319,6 +327,8 @@
                 [r".*: warning: \[NonCanonicalStaticMemberImport\] .+"]),
     java_medium('equals method doesn\'t override Object.equals',
                 [r".*: warning: \[NonOverridingEquals\] .+"]),
+    java_medium('Not closeable',
+                [r".*\.java:.*: warning: .+ \[NotCloseable\]$"]),
     java_medium('Constructors should not be annotated with @Nullable since they cannot return null',
                 [r".*: warning: \[NullableConstructor\] .+"]),
     java_medium('Dereference of possibly-null value',
@@ -369,6 +379,8 @@
                 [r".*: warning: \[RequiredModifiers\] .+"]),
     java_medium('Void methods should not have a @return tag.',
                 [r".*: warning: \[ReturnFromVoid\] .+"]),
+    java_medium('SAM-compatible parameters should be last',
+                [r".*\.java:.*: warning: .+ \[SamShouldBeLast\]$"]),
     java_medium(u'Prefer the short-circuiting boolean operators \u0026\u0026 and || to \u0026 and |.',
                 [r".*: warning: \[ShortCircuitBoolean\] .+"]),
     java_medium('Writes to static fields should not be guarded by instance locks',
@@ -431,6 +443,10 @@
                 [r".*: warning: \[UnusedException\] .+"]),
     java_medium('Java assert is used in test. For testing purposes Assert.* matchers should be used.',
                 [r".*: warning: \[UseCorrectAssertInTests\] .+"]),
+    java_medium('UserHandle',
+                [r".*\.java:.*: warning: .+ \[UserHandle\]$"]),
+    java_medium('UserHandleName',
+                [r".*\.java:.*: warning: .+ \[UserHandleName\]$"]),
     java_medium('Non-constant variable missing @Var annotation',
                 [r".*: warning: \[Var\] .+"]),
     java_medium('variableName and type with the same name would refer to the static field instead of the class',
@@ -449,6 +465,8 @@
               [r".*: warning: \[ArrayFillIncompatibleType\] .+"]),
     java_high('hashcode method on array does not hash array contents',
               [r".*: warning: \[ArrayHashCode\] .+"]),
+    java_high('ArrayReturn',
+              [r".*\.java:.*: warning: .+ \[ArrayReturn\]$"]),
     java_high('Calling toString on an array does not provide useful information',
               [r".*: warning: \[ArrayToString\] .+"]),
     java_high('Arrays.asList does not autobox primitive arrays, as one might expect.',
@@ -500,7 +518,7 @@
     java_high('Thread created but not started',
               [r".*: warning: \[DeadThread\] .+"]),
     java_high('Deprecated item is not annotated with @Deprecated',
-              [r".*: warning: \[DepAnn\] .+"]),
+              [r".*\.java:.*: warning: \[.*\] .+ is not annotated with @Deprecated$"]),
     java_high('Division by integer literal zero',
               [r".*: warning: \[DivZero\] .+"]),
     java_high('This method should not be called.',
@@ -721,4 +739,11 @@
               [r".*: warning: \[UnusedCollectionModifiedInPlace\] .+"]),
     java_high('`var` should not be used as a type name.',
               [r".*: warning: \[VarTypeName\] .+"]),
+    # Other javac tool warnings
+    java_medium('addNdkApiCoverage failed to getPackage',
+                [r".*: warning: addNdkApiCoverage failed to getPackage"]),
+    java_medium('Supported version from annotation processor',
+                [r".*: warning: Supported source version .+ from annotation processor"]),
 ]
+
+compile_patterns(warn_patterns)
diff --git a/tools/warn/make_warn_patterns.py b/tools/warn/make_warn_patterns.py
index ac3c508..327fce4 100644
--- a/tools/warn/make_warn_patterns.py
+++ b/tools/warn/make_warn_patterns.py
@@ -1,4 +1,4 @@
-#
+# python3
 # Copyright (C) 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,9 +15,12 @@
 
 """Warning patterns for build make tools."""
 
-from severity import Severity
+# pylint:disable=relative-beyond-top-level
+from .cpp_warn_patterns import compile_patterns
+# pylint:disable=g-importing-member
+from .severity import Severity
 
-patterns = [
+warn_patterns = [
     # pylint:disable=line-too-long,g-inconsistent-quotes
     {'category': 'make', 'severity': Severity.MEDIUM,
      'description': 'make: overriding commands/ignoring old commands',
@@ -51,3 +54,6 @@
      'description': 'make: please convert to soong',
      'patterns': [r".*: warning: .* has been deprecated. Please convert to Soong."]},
 ]
+
+
+compile_patterns(warn_patterns)
diff --git a/tools/warn/other_warn_patterns.py b/tools/warn/other_warn_patterns.py
index 45d14dc..1331bc6 100644
--- a/tools/warn/other_warn_patterns.py
+++ b/tools/warn/other_warn_patterns.py
@@ -1,4 +1,4 @@
-#
+# python3
 # Copyright (C) 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,7 +15,10 @@
 
 """Warning patterns from other tools."""
 
-from severity import Severity
+# pylint:disable=relative-beyond-top-level
+from .cpp_warn_patterns import compile_patterns
+# pylint:disable=g-importing-member
+from .severity import Severity
 
 
 def warn(name, severity, description, pattern_list):
@@ -39,9 +42,15 @@
   return warn('asm', Severity.MEDIUM, description, pattern_list)
 
 
-patterns = [
+def kotlin(description, pattern_list):
+  return warn('Kotlin', Severity.MEDIUM, description, pattern_list)
+
+
+warn_patterns = [
     # pylint:disable=line-too-long,g-inconsistent-quotes
     # aapt warnings
+    aapt('No comment for public symbol',
+         [r".*: warning: No comment for public symbol .+"]),
     aapt('No default translation',
          [r".*: warning: string '.+' has no default translation in .*"]),
     aapt('Missing default or required localization',
@@ -90,22 +99,22 @@
      'patterns': [r".*: warning: .* generate guard with empty availability: obsoleted ="]},
     # Protoc warnings
     {'category': 'Protoc', 'severity': Severity.MEDIUM,
-     'description': 'Proto: Enum name colision after strip',
+     'description': 'Proto: Enum name collision after strip',
      'patterns': [r".*: warning: Enum .* has the same name .* ignore case and strip"]},
     {'category': 'Protoc', 'severity': Severity.MEDIUM,
      'description': 'Proto: Import not used',
      'patterns': [r".*: warning: Import .*/.*\.proto but not used.$"]},
     # Kotlin warnings
-    {'category': 'Kotlin', 'severity': Severity.MEDIUM,
-     'description': 'Kotlin: never used parameter or variable',
-     'patterns': [r".*: warning: (parameter|variable) '.*' is never used$"]},
-    {'category': 'Kotlin', 'severity': Severity.MEDIUM,
-     'description': 'Kotlin: Deprecated in Java',
-     'patterns': [r".*: warning: '.*' is deprecated. Deprecated in Java"]},
-    {'category': 'Kotlin', 'severity': Severity.MEDIUM,
-     'description': 'Kotlin: library has Kotlin runtime',
-     'patterns': [r".*: warning: library has Kotlin runtime bundled into it",
-                  r".*: warning: some JAR files .* have the Kotlin Runtime library"]},
+    kotlin('never used parameter or variable',
+           [r".*\.kt:.*: warning: (parameter|variable) '.*' is never used$",
+            r".*\.kt:.*: warning: (parameter|variable) '.*' is never used, could be renamed to _$"]),
+    kotlin('unchecked cast',
+           [r".*\.kt:.*: warning: unchecked cast: .* to .*$"]),
+    kotlin('Deprecated in Java',
+           [r".*\.kt:.*: warning: '.*' is deprecated. Deprecated in Java"]),
+    kotlin('library has Kotlin runtime',
+           [r".*: warning: library has Kotlin runtime bundled into it",
+            r".*: warning: some JAR files .* have the Kotlin Runtime library"]),
     # Rust warnings
     {'category': 'Rust', 'severity': Severity.HIGH,
      'description': 'Rust: Does not derive Copy',
@@ -124,7 +133,10 @@
      'description': 'skip, In file included from ...',
      'patterns': [r".*: warning: In file included from .+,"]},
     # catch-all for warnings this script doesn't know about yet
-    {'category': 'C/C++', 'severity': Severity.UNKNOWN,
+    {'category': 'C/C++', 'severity': Severity.UNMATCHED,
      'description': 'Unclassified/unrecognized warnings',
      'patterns': [r".*: warning: .+"]},
 ]
+
+
+compile_patterns(warn_patterns)
diff --git a/tools/warn/severity.py b/tools/warn/severity.py
index bb23f2c..b1c38e4 100644
--- a/tools/warn/severity.py
+++ b/tools/warn/severity.py
@@ -1,4 +1,4 @@
-#
+# python3
 # Copyright (C) 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -13,35 +13,45 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-"""Severity levels and attributes."""
+"""Clang_Tidy_Warn Severity class definition.
+
+This file stores definition for class Severity that is used in warn_patterns.
+"""
 
 
-class Severity(object):
-  """Severity levels and attributes."""
-  # numbered by dump order
-  FIXMENOW = 0
-  HIGH = 1
-  MEDIUM = 2
-  LOW = 3
-  ANALYZER = 4
-  TIDY = 5
-  HARMLESS = 6
-  UNKNOWN = 7
-  SKIP = 8
-  range = range(SKIP + 1)
-  attributes = [
-      # pylint:disable=bad-whitespace
-      ['fuchsia',   'FixNow',    'Critical warnings, fix me now'],
-      ['red',       'High',      'High severity warnings'],
-      ['orange',    'Medium',    'Medium severity warnings'],
-      ['yellow',    'Low',       'Low severity warnings'],
-      ['hotpink',   'Analyzer',  'Clang-Analyzer warnings'],
-      ['peachpuff', 'Tidy',      'Clang-Tidy warnings'],
-      ['limegreen', 'Harmless',  'Harmless warnings'],
-      ['lightblue', 'Unknown',   'Unknown warnings'],
-      ['grey',      'Unhandled', 'Unhandled warnings']
+# pylint:disable=old-style-class
+class Severity:
+  """Class of Severity levels where each level is a SeverityInfo."""
+
+  class SeverityInfo:
+
+    def __init__(self, value, color, column_header, header):
+      self.value = value
+      self.color = color
+      self.column_header = column_header
+      self.header = header
+
+  # SEVERITY_UNKNOWN should never occur since every warn_pattern listed has
+  # a specified severity. It exists for protobuf, the other values must
+  # map to non-zero values (since 0 is reserved for a default UNKNOWN), but
+  # logic in clang_tidy_warn.py assumes severity level values are consecutive
+  # ints starting with 0.
+  SEVERITY_UNKNOWN = SeverityInfo(0, 'blueviolet', 'Errors of unknown severity',
+                                  'Unknown severity (should not occur)')
+  FIXMENOW = SeverityInfo(1, 'fuschia', 'FixNow',
+                          'Critical warnings, fix me now')
+  HIGH = SeverityInfo(2, 'red', 'High', 'High severity warnings')
+  MEDIUM = SeverityInfo(3, 'orange', 'Medium', 'Medium severity warnings')
+  LOW = SeverityInfo(4, 'yellow', 'Low', 'Low severity warnings')
+  ANALYZER = SeverityInfo(5, 'hotpink', 'Analyzer', 'Clang-Analyzer warnings')
+  TIDY = SeverityInfo(6, 'peachpuff', 'Tidy', 'Clang-Tidy warnings')
+  HARMLESS = SeverityInfo(7, 'limegreen', 'Harmless', 'Harmless warnings')
+  UNMATCHED = SeverityInfo(8, 'lightblue', 'Unmatched', 'Unmatched warnings')
+  SKIP = SeverityInfo(9, 'grey', 'Unhandled', 'Unhandled warnings')
+
+  levels = [
+      SEVERITY_UNKNOWN, FIXMENOW, HIGH, MEDIUM, LOW, ANALYZER, TIDY, HARMLESS,
+      UNMATCHED, SKIP
   ]
-  colors = [a[0] for a in attributes]
-  column_headers = [a[1] for a in attributes]
-  headers = [a[2] for a in attributes]
-
+  # HTML relies on ordering by value. Sort here to ensure that this is proper
+  levels = sorted(levels, key=lambda severity: severity.value)
diff --git a/tools/warn/tidy_warn_patterns.py b/tools/warn/tidy_warn_patterns.py
index a26b388..2c5ab79 100644
--- a/tools/warn/tidy_warn_patterns.py
+++ b/tools/warn/tidy_warn_patterns.py
@@ -1,4 +1,4 @@
-#
+# python3
 # Copyright (C) 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,7 +15,10 @@
 
 """Warning patterns for clang-tidy."""
 
-from severity import Severity
+# pylint:disable=relative-beyond-top-level
+from .cpp_warn_patterns import compile_patterns
+# pylint:disable=g-importing-member
+from .severity import Severity
 
 
 def tidy_warn_pattern(description, pattern):
@@ -35,13 +38,13 @@
   return tidy_warn_pattern(description, description + r'-.+')
 
 
-def analyzer_high(description, pattern_list):
+def analyzer_high(description, patterns):
   # Important clang analyzer warnings to be fixed ASAP.
   return {
       'category': 'C/C++',
       'severity': Severity.HIGH,
       'description': description,
-      'patterns': pattern_list
+      'patterns': patterns
   }
 
 
@@ -53,12 +56,12 @@
   return analyzer_high(check, [r'.*: .+\[' + check + r'.+\]$'])
 
 
-def analyzer_warn(description, pattern_list):
+def analyzer_warn(description, patterns):
   return {
       'category': 'C/C++',
       'severity': Severity.ANALYZER,
       'description': description,
-      'patterns': pattern_list
+      'patterns': patterns
   }
 
 
@@ -70,7 +73,7 @@
   return analyzer_warn(check, [r'.*: .+\[' + check + r'.+\]$'])
 
 
-patterns = [
+warn_patterns = [
     # pylint:disable=line-too-long,g-inconsistent-quotes
     group_tidy_warn_pattern('android'),
     simple_tidy_warn_pattern('abseil-string-find-startswith'),
@@ -136,6 +139,13 @@
     simple_tidy_warn_pattern('portability-simd-intrinsics'),
     group_tidy_warn_pattern('performance'),
     group_tidy_warn_pattern('readability'),
+    simple_tidy_warn_pattern('abseil-string-find-startwith'),
+    simple_tidy_warn_pattern('abseil-faster-strsplit-delimiter'),
+    simple_tidy_warn_pattern('abseil-no-namespace'),
+    simple_tidy_warn_pattern('abseil-no-internal-dependencies'),
+    group_tidy_warn_pattern('abseil'),
+    simple_tidy_warn_pattern('portability-simd-intrinsics'),
+    group_tidy_warn_pattern('portability'),
 
     # warnings from clang-tidy's clang-analyzer checks
     analyzer_high('clang-analyzer-core, null pointer',
@@ -189,5 +199,8 @@
     analyzer_high_check('clang-analyzer-cplusplus.NewDeleteLeaks'),
     analyzer_high_check('clang-analyzer-cplusplus.NewDelete'),
     analyzer_group_check('clang-analyzer-unix'),
-    analyzer_group_check('clang-analyzer'),  # catch al
+    analyzer_group_check('clang-analyzer'),  # catch all
 ]
+
+
+compile_patterns(warn_patterns)
diff --git a/tools/warn/warn.py b/tools/warn/warn.py
index 252f073..bdfd489 100755
--- a/tools/warn/warn.py
+++ b/tools/warn/warn.py
@@ -19,6 +19,7 @@
 import multiprocessing
 
 # pylint:disable=relative-beyond-top-level
+# pylint:disable=g-importing-member
 from .warn_common import common_main
 
 
diff --git a/tools/warn/warn_common.py b/tools/warn/warn_common.py
index de4b805..b885ad2 100755
--- a/tools/warn/warn_common.py
+++ b/tools/warn/warn_common.py
@@ -1,4 +1,4 @@
-#
+# python3
 # Copyright (C) 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -24,18 +24,13 @@
 #
 # To parse and keep warning message in the input file:
 #   severity:                classification of message severity
-#   severity.range           [0, 1, ... last_severity_level]
-#   severity.colors          for header background
-#   severity.column_headers  for the warning count table
-#   severity.headers         for warning message tables
 #   warn_patterns:
 #   warn_patterns[w]['category']     tool that issued the warning, not used now
 #   warn_patterns[w]['description']  table heading
 #   warn_patterns[w]['members']      matched warnings from input
-#   warn_patterns[w]['option']       compiler flag to control the warning
 #   warn_patterns[w]['patterns']     regular expressions to match warnings
 #   warn_patterns[w]['projects'][p]  number of warnings of pattern w in p
-#   warn_patterns[w]['severity']     severity level
+#   warn_patterns[w]['severity']     severity tuple
 #   project_list[p][0]               project name
 #   project_list[p][1]               regular expression to match a project path
 #   project_patterns[p]              re.compile(project_list[p][1])
@@ -48,7 +43,7 @@
 #   platform_version
 #   target_product
 #   target_variant
-#   compile_patterns, parse_input_file
+#   parse_input_file
 #
 # To emit html page of warning messages:
 #   flags: --byproject, --url, --separator
@@ -68,13 +63,12 @@
 #   Some data are copied from Python to JavaScript, to generate HTML elements.
 #   FlagURL                args.url
 #   FlagSeparator          args.separator
-#   SeverityColors:        severity.colors
-#   SeverityHeaders:       severity.headers
-#   SeverityColumnHeaders: severity.column_headers
+#   SeverityColors:        list of colors for all severity levels
+#   SeverityHeaders:       list of headers for all severity levels
+#   SeverityColumnHeaders: list of column_headers for all severity levels
 #   ProjectNames:          project_names, or project_list[*][0]
 #   WarnPatternsSeverity:     warn_patterns[*]['severity']
 #   WarnPatternsDescription:  warn_patterns[*]['description']
-#   WarnPatternsOption:       warn_patterns[*]['option']
 #   WarningMessages:          warning_messages
 #   Warnings:                 warning_records
 #   StatsHeader:           warning count table header row
@@ -103,6 +97,7 @@
 from . import make_warn_patterns
 from . import other_warn_patterns
 from . import tidy_warn_patterns
+# pylint:disable=g-importing-member
 from .android_project_list import project_list
 from .severity import Severity
 
@@ -132,11 +127,11 @@
                     help='Path to build.log file')
 args = parser.parse_args()
 
-warn_patterns = make_warn_patterns.patterns
-warn_patterns.extend(cpp_warn_patterns.patterns)
-warn_patterns.extend(java_warn_patterns.patterns)
-warn_patterns.extend(tidy_warn_patterns.patterns)
-warn_patterns.extend(other_warn_patterns.patterns)
+warn_patterns = make_warn_patterns.warn_patterns
+warn_patterns.extend(cpp_warn_patterns.warn_patterns)
+warn_patterns.extend(java_warn_patterns.warn_patterns)
+warn_patterns.extend(tidy_warn_patterns.warn_patterns)
+warn_patterns.extend(other_warn_patterns.warn_patterns)
 
 project_patterns = []
 project_names = []
@@ -151,8 +146,6 @@
   project_patterns = [re.compile(p[1]) for p in project_list]
   for w in warn_patterns:
     w['members'] = []
-    if 'option' not in w:
-      w['option'] = ''
     # Each warning pattern has a 'projects' dictionary, that
     # maps a project name to number of warnings in that project.
     w['projects'] = {}
@@ -233,27 +226,33 @@
   """Dump a google chart table of warnings per project and severity."""
   # warnings[p][s] is number of warnings in project p of severity s.
   # pylint:disable=g-complex-comprehension
-  warnings = {p: {s: 0 for s in Severity.range} for p in project_names}
+  warnings = {p: {s.value: 0 for s in Severity.levels} for p in project_names}
   for i in warn_patterns:
-    s = i['severity']
+    # pytype: disable=attribute-error
+    s = i['severity'].value
+    # pytype: enable=attribute-error
     for p in i['projects']:
       warnings[p][s] += i['projects'][p]
 
   # total_by_project[p] is number of warnings in project p.
-  total_by_project = {p: sum(warnings[p][s] for s in Severity.range)
-                      for p in project_names}
+  total_by_project = {
+      p: sum(warnings[p][s.value] for s in Severity.levels)
+      for p in project_names
+  }
 
   # total_by_severity[s] is number of warnings of severity s.
-  total_by_severity = {s: sum(warnings[p][s] for p in project_names)
-                       for s in Severity.range}
+  total_by_severity = {
+      s.value: sum(warnings[p][s.value] for p in project_names)
+      for s in Severity.levels
+  }
 
   # emit table header
   stats_header = ['Project']
-  for s in Severity.range:
-    if total_by_severity[s]:
-      stats_header.append("<span style='background-color:{}'>{}</span>".
-                          format(Severity.colors[s],
-                                 Severity.column_headers[s]))
+  for s in Severity.levels:
+    if total_by_severity[s.value]:
+      stats_header.append(
+          '<span style=\'background-color:{}\'>{}</span>'.format(
+              s.color, s.column_header))
   stats_header.append('TOTAL')
 
   # emit a row of warning counts per project, skip no-warning projects
@@ -262,9 +261,9 @@
   for p in project_names:
     if total_by_project[p]:
       one_row = [p]
-      for s in Severity.range:
-        if total_by_severity[s]:
-          one_row.append(warnings[p][s])
+      for s in Severity.levels:
+        if total_by_severity[s.value]:
+          one_row.append(warnings[p][s.value])
       one_row.append(total_by_project[p])
       stats_rows.append(one_row)
       total_all_projects += total_by_project[p]
@@ -272,10 +271,10 @@
   # emit a row of warning counts per severity
   total_all_severities = 0
   one_row = ['<b>TOTAL</b>']
-  for s in Severity.range:
-    if total_by_severity[s]:
-      one_row.append(total_by_severity[s])
-      total_all_severities += total_by_severity[s]
+  for s in Severity.levels:
+    if total_by_severity[s.value]:
+      one_row.append(total_by_severity[s.value])
+      total_all_severities += total_by_severity[s.value]
   one_row.append(total_all_projects)
   stats_rows.append(one_row)
   print('<script>')
@@ -292,7 +291,7 @@
   unknown = 0
   sort_warnings()
   for i in warn_patterns:
-    if i['severity'] == Severity.UNKNOWN:
+    if i['severity'] == Severity.UNMATCHED:
       unknown += len(i['members'])
     elif i['severity'] == Severity.SKIP:
       skipped += len(i['members'])
@@ -354,8 +353,6 @@
     if not i['members']:
       fixed_patterns.append(i['description'] + ' (' +
                             all_patterns(i) + ')')
-    if i['option']:
-      fixed_patterns.append(' ' + i['option'])
   fixed_patterns = sorted(fixed_patterns)
   print('<div id="' + anchor + '" style="display:none;"><table>')
   cur_row_class = 0
@@ -380,6 +377,7 @@
   for i in range(len(warn_patterns)):
     w = warn_patterns[i]
     for cpat in w['compiled_patterns']:
+      # pytype: disable=attribute-error
       if cpat.match(line):
         p = find_project_index(line)
         results.append([line, i, p])
@@ -389,6 +387,7 @@
         # probably caused by 'make -j' mixing the output from
         # 2 or more concurrent compiles
         pass
+      # pytype: enable=attribute-error
 
 
 def classify_warnings(lines):
@@ -404,7 +403,6 @@
 
 def parallel_classify_warnings(warning_lines, parallel_process):
   """Classify all warning lines with num_cpu parallel processes."""
-  compile_patterns()
   num_cpu = args.processes
   if num_cpu > 1:
     groups = [[] for x in range(num_cpu)]
@@ -431,14 +429,6 @@
         pattern['projects'][pname] = 1
 
 
-def compile_patterns():
-  """Precompiling every pattern speeds up parsing by about 30x."""
-  for i in warn_patterns:
-    i['compiled_patterns'] = []
-    for pat in i['patterns']:
-      i['compiled_patterns'].append(re.compile(pat))
-
-
 def find_warn_py_and_android_root(path):
   """Set and return android_root path if it is found."""
   global android_root
@@ -475,7 +465,9 @@
           return
   # Do not use common prefix of a small number of paths.
   if count > 10:
+    # pytype: disable=wrong-arg-types
     root_path = os.path.commonprefix(warning_lines)
+    # pytype: enable=wrong-arg-types
     if len(root_path) > 2 and root_path[len(root_path) - 1] == '/':
       android_root = root_path[:-1]
 
@@ -575,7 +567,9 @@
 
 # Return s with escaped backslash and quotation characters.
 def escape_string(s):
+  # pytype: disable=attribute-error
   return s.replace('\\', '\\\\').replace('"', '\\"')
+  # pytype: enable=attribute-error
 
 
 # Return s without trailing '\n' and escape the quotation characters.
@@ -777,16 +771,18 @@
   """Dump dynamic HTML page's static JavaScript data."""
   emit_const_string('FlagURL', args.url if args.url else '')
   emit_const_string('FlagSeparator', args.separator if args.separator else '')
-  emit_const_string_array('SeverityColors', Severity.colors)
-  emit_const_string_array('SeverityHeaders', Severity.headers)
-  emit_const_string_array('SeverityColumnHeaders', Severity.column_headers)
+  emit_const_string_array('SeverityColors', [s.color for s in Severity.levels])
+  emit_const_string_array('SeverityHeaders',
+                          [s.header for s in Severity.levels])
+  emit_const_string_array('SeverityColumnHeaders',
+                          [s.column_header for s in Severity.levels])
   emit_const_string_array('ProjectNames', project_names)
+  # pytype: disable=attribute-error
   emit_const_int_array('WarnPatternsSeverity',
-                       [w['severity'] for w in warn_patterns])
+                       [w['severity'].value for w in warn_patterns])
+  # pytype: enable=attribute-error
   emit_const_html_string_array('WarnPatternsDescription',
                                [w['description'] for w in warn_patterns])
-  emit_const_html_string_array('WarnPatternsOption',
-                               [w['option'] for w in warn_patterns])
   emit_const_html_string_array('WarningMessages', warning_messages)
   emit_const_object_array('Warnings', warning_records)
 
@@ -851,7 +847,9 @@
       warning = kind + ': ' + description_for_csv(i)
       writer.writerow([n, '', warning])
       # print number of warnings for each project, ordered by project name.
+      # pytype: disable=attribute-error
       projects = sorted(i['projects'].keys())
+      # pytype: enable=attribute-error
       for p in projects:
         writer.writerow([i['projects'][p], p, warning])
   writer.writerow([total, '', kind + ' warnings'])
@@ -864,8 +862,9 @@
   """Dump number of warnings in csv format to stdout."""
   sort_warnings()
   total = 0
-  for s in Severity.range:
-    total += count_severity(writer, s, Severity.column_headers[s])
+  for s in Severity.levels:
+    if s != Severity.SEVERITY_UNKNOWN:
+      total += count_severity(writer, s, s.column_header)
   writer.writerow([total, '', 'All warnings'])