Move shared code between build and compiler to a separate project

This CL encapsulates the shared code between build time and annotation
processing into a separate project. This project has no dependency on
kotlin so we can easily use it in gradle plugin.

Bug: 21815393
Change-Id: I9fd2e88885d06ff5423121747817ffcd056e8c74
diff --git a/compilerCommon/build.gradle b/compilerCommon/build.gradle
new file mode 100644
index 0000000..2531c02
--- /dev/null
+++ b/compilerCommon/build.gradle
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+apply plugin: 'java'
+
+
+version = '1.0'
+sourceCompatibility = config.javaTargetCompatibility
+targetCompatibility = config.javaSourceCompatibility
+repositories {
+    mavenCentral()
+}
+
+sourceSets {
+    main {
+        java {
+            srcDir 'src/main/java'
+            srcDir 'src/main/xml-gen'
+            srcDir 'src/main/grammar-gen'
+        }
+    }
+}
+
+dependencies {
+    testCompile group: 'junit', name: 'junit', version: '4.11'
+    compile project(':baseLibrary')
+    compile 'org.apache.commons:commons-lang3:3.3.2'
+    compile 'com.google.guava:guava:17.0'
+    compile 'com.tunnelvisionlabs:antlr4:4.5'
+    compile 'commons-io:commons-io:2.4'
+}
+
+project.tasks.create(name : "generateXmlParser", type : JavaExec) {
+    classpath configurations.runtime
+    main "org.antlr.v4.Tool"
+    workingDir projectDir
+    args "XMLParser.g4", "-visitor", "-o", "src/main/java/android/databinding/parser", "-package", "android.databinding.parser", "-lib", "."
+}
+
+project.tasks.create(name : "generateGrammar", type : JavaExec) {
+    classpath configurations.runtime
+    main "org.antlr.v4.Tool"
+    args "BindingExpression.g4", "-visitor", "-o", "src/main/grammar-gen/android/databinding/parser", "-package", "android.databinding.parser"
+}
+