SONAR-1514: Add support for a new Ant task to analyze projects

* Add new environment - Ant.

* Introduce new component (Reactor) in order to break dependency on MavenSession.

* Add annotation SupportedEnvironment and corresponding check to BatchPluginRepository.
  To allow specify in which environments BatchExtension should be active.

* Use this new annotation to disable MavenDependenciesSensor in Ant environment.

2 files changed, 41 insertions, 1 deletions

diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/batch/SupportedEnvironment.java b/sonar-plugin-api/src/main/java/org/sonar/api/batch/SupportedEnvironment.java
new file mode 100644
index 00000000000..4c62a97d5d2
--- /dev/null
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/batch/SupportedEnvironment.java
@@ -0,0 +1,40 @@
+/*
+ * Sonar, open source software quality management tool.
+ * Copyright (C) 2009 SonarSource SA
+ * mailto:contact AT sonarsource DOT com
+ *
+ * Sonar is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * Sonar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Sonar; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
+ */
+package org.sonar.api.batch;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * This annotation allows to specify in which environments {@link org.sonar.api.BatchExtension} would be active.
+ * Consult to {@link org.sonar.api.platform.Environment} to find possible values, for example - "maven2".
+ * We strictly recommend you to not overuse this annotation - most preferable is to design extensions to work in all environments.
+ * 
+ * @since 2.6
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ ElementType.TYPE })
+public @interface SupportedEnvironment {
+
+  String[] value();
+
+}
diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/platform/Environment.java b/sonar-plugin-api/src/main/java/org/sonar/api/platform/Environment.java
index b9dd664f72c..6279c473ed3 100644
--- a/sonar-plugin-api/src/main/java/org/sonar/api/platform/Environment.java
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/platform/Environment.java
@@ -30,7 +30,7 @@ public enum Environment implements BatchComponent, ServerComponent {
   /*
    * When will GRADLE, ANT, ECLIPSE, INTELLIJ_IDEA be added to this list ? :-)
    */
-  SERVER, MAVEN3, MAVEN2;
+  SERVER, MAVEN3, MAVEN2, ANT;
 
   public boolean isServer() {
     return this==SERVER;