#!/bin/bash
#
# Copyright (C) 2017 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Stop if something fails.
set -e

JAVAC_SOURCE=1.6
JAVAC_TARGET=1.6

# Write out files with 65500 total static fields, instance fields, and methods
# to exceed the dex format's limits.
mkdir src
awk '
BEGIN {
    writeFileField("FillerStatic", "static public int staticInt");
    writeFileField("FillerField", "public int fieldInt");
    writeFileMethod("FillerMethod");
}
function writeFileField(name, type) {
    fileName = "src/" name ".java";
    printf("public class %s {\n", name) > fileName;
    for (i = 1; i <= 65500; i++) {
        printf("    %s%d;\n", type, i) > fileName;
    }
    printf("}\n") > fileName;
}
function writeFileMethod(name) {
    fileName = "src/" name ".java";
    printf("public class %s {\n", name) > fileName;
    for (i = 1; i <= 65500; i++) {
      printf("    public void meth%d() { }\n", i) > fileName;
    }
    printf("}\n") > fileName;
}'

mkdir classes
${JAVAC} -source ${JAVAC_SOURCE} -target ${JAVAC_TARGET} -d classes `find src -name '*.java'`
