commit cf3e236c9e131cbb9134c4198ad89bfc3c8c9533
author Mikaël Peltier <mikaelpeltier@google.com> Mon Oct 16 13:45:45 2017 +0200
committer Mikaël Peltier <mikaelpeltier@google.com> Mon Oct 16 13:45:45 2017 +0200
tree 957b0af7185c5b3a071ad8e938ea90f8c387ee93
parent 5e8f1baab3a92ef246d214d8db64eb5953538490

Allow to use error prone

- Set the property with_error_prone on the gradle command line will
enable a build using error prone. Only one check is enable, unused
import will raise an error. If with_error_prone property is not set,
the behavior is unchanged.
- Remove unused imports.

Change-Id: I06a27e5d93fd3102cf3ef8aff597e1d1bca364d9

build.gradle

diff --git a/build.gradle b/build.gradle
index dc36174..2899f58 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,6 +8,14 @@
 apply plugin: 'idea'
 apply plugin: 'com.google.protobuf'
 apply plugin: 'com.cookpad.android.licensetools'
+if (project.hasProperty('with_error_prone')) {
+    apply plugin: "net.ltgt.errorprone"
+    tasks.withType(JavaCompile) {
+        options.compilerArgs += [
+                '-XepDisableAllChecks',
+                '-Xep:RemoveUnusedImports:ERROR']
+    }
+}
 
 apply from: 'copyAdditionalJctfCommonFiles.gradle'
 
@@ -25,6 +33,9 @@
     repositories {
         mavenCentral()
         jcenter()
+        maven {
+            url "https://plugins.gradle.org/m2/"
+        }
     }
     dependencies {
         classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.1'
@@ -34,6 +45,9 @@
         // support java9.
         // classpath 'com.github.jengelman.gradle.plugins:shadow:2.0.1'
         classpath files("third_party/shadow/shadow-2.0.1.jar")
+        if (project.hasProperty('with_error_prone')) {
+            classpath "net.ltgt.gradle:gradle-errorprone-plugin:0.0.13"
+        }
     }
 }