1#!/bin/bash
2#
3# Copyright 2018 The Android Open Source Project
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#      http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17# make us exit on a failure
18set -e
19
20export ASM_JAR="${ANDROID_BUILD_TOP}/prebuilts/misc/common/asm/asm-6.0.jar"
21
22export ORIGINAL_JAVAC="$JAVAC"
23
24function javac_wrapper {
25  set -e
26
27  # Add annotation src files to our compiler inputs.
28  local asrcs=util-src/annotations/*.java
29
30  # Compile.
31  $ORIGINAL_JAVAC "$@" $asrcs
32
33  # Move original classes to intermediate location.
34  mv classes intermediate-classes
35  mkdir classes
36
37  # Transform intermediate classes.
38  local transformer_args="-cp ${ASM_JAR}:$PWD/transformer.jar transformer.ConstantTransformer"
39  for class in intermediate-classes/*.class ; do
40    local transformed_class=classes/$(basename ${class})
41    ${JAVA:-java} ${transformer_args} ${class} ${transformed_class}
42  done
43}
44
45export -f javac_wrapper
46export JAVAC=javac_wrapper
47
48######################################################################
49
50# Build the transformer to apply to compiled classes.
51mkdir classes
52${ORIGINAL_JAVAC:-javac} ${JAVAC_ARGS} -cp "${ASM_JAR}" -d classes $(find util-src -name '*.java')
53jar -cf transformer.jar -C classes transformer/ -C classes annotations/
54rm -rf classes
55
56# Use API level 28 for DEX file support constant method handles.
57./default-build "$@" --api-level 28
58