1 files changed, 49 insertions, 0 deletions
diff --git a/sonar-scanner-engine/src/main/java/org/sonar/scanner/rule/ActiveRulesBuilder.java b/sonar-scanner-engine/src/main/java/org/sonar/scanner/rule/ActiveRulesBuilder.java
new file mode 100644
index 00000000000..ce5885836a2
--- /dev/null
+++ b/sonar-scanner-engine/src/main/java/org/sonar/scanner/rule/ActiveRulesBuilder.java
@@ -0,0 +1,49 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2019 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package org.sonar.scanner.rule;
+
+import org.sonar.api.batch.rule.ActiveRules;
+import org.sonar.api.rule.RuleKey;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * Builds instances of {@link org.sonar.api.batch.rule.ActiveRules}.
+ * <b>For unit testing and internal use only</b>.
+ *
+ * @since 4.2
+ */
+public class ActiveRulesBuilder {
+
+  private final Map<RuleKey, NewActiveRule> map = new LinkedHashMap<>();
+
+  public ActiveRulesBuilder addRule(NewActiveRule newActiveRule) {
+    if (map.containsKey(newActiveRule.ruleKey)) {
+      throw new IllegalStateException(String.format("Rule '%s' is already activated", newActiveRule.ruleKey));
+    }
+    map.put(newActiveRule.ruleKey, newActiveRule);
+    return this;
+  }
+
+  public ActiveRules build() {
+    return new DefaultActiveRules(map.values());
+  }
+}