upload android base code part3

android/art/tools/javac-helper.sh

@@ -0,0 +1,87 @@
+#!/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.
+
+#
+# Calls javac with the -bootclasspath values passed in automatically.
+# (This avoids having to manually set a boot class path).
+#
+#
+# Script-specific args:
+#   --mode=[host|target]: Select between host or target bootclasspath (default target).
+#   --core-only:          Use only "core" bootclasspath (e.g. do not include framework).
+#   --show-commands:      Print the desugar command being executed.
+#   --help:               Print above list of args.
+#
+# All other args are forwarded to javac
+#
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+TOP=$DIR/../..
+
+if [[ -z $JAVAC ]]; then
+  JAVAC=javac
+fi
+
+bootjars_args=
+mode=target
+showcommands=n
+while true; do
+  case $1 in
+    --help)
+      echo "Usage: $0 [--mode=host|target] [--core-only] [--show-commands] <javac args>"
+      exit 0
+      ;;
+    --mode=host)
+      bootjars_args="$bootjars_args --host"
+      ;;
+    --mode=target)
+      bootjars_args="$bootjars_args --target"
+      ;;
+    --core-only)
+      bootjars_args="$bootjars_args --core"
+      ;;
+    --show-commands)
+      showcommands=y
+      ;;
+    *)
+      break
+      ;;
+  esac
+  shift
+done
+
+javac_bootclasspath=()
+boot_class_path_list=$($TOP/art/tools/bootjars.sh $bootjars_args --path)
+
+
+for path in $boot_class_path_list; do
+  javac_bootclasspath+=("$path")
+done
+
+if [[ ${#javac_bootclasspath[@]} -eq 0 ]]; then
+  echo "FATAL: Missing bootjars.sh file path list" >&2
+  exit 1
+fi
+
+function join_by { local IFS="$1"; shift; echo "$*"; }
+bcp_arg="$(join_by ":" "${javac_bootclasspath[@]}")"
+javac_args=(-bootclasspath "$bcp_arg")
+
+if [[ $showcommands == y ]]; then
+  echo ${JAVAC} "${javac_args[@]}" "$@"
+fi
+
+${JAVAC} "${javac_args[@]}" "$@"