10: Create SuppressWarningsPlugin

src/main/java/com/bartek/esa/core/di/PluginModule.java

@@ -89,4 +89,10 @@ public class PluginModule {
     public Plugin externalStoragePlugin(GlobMatcher globMatcher, XmlHelper xmlHelper, ParentNodeFinder parentNodeFinder) {
         return new ExternalStoragePlugin(globMatcher, xmlHelper, parentNodeFinder);
     }
+
+    @Provides
+    @IntoSet
+    public Plugin suppressWarningsPlugin(GlobMatcher globMatcher, XmlHelper xmlHelper) {
+        return new SuppressWarningsPlugin(globMatcher, xmlHelper);
+    }
 }

src/main/java/com/bartek/esa/core/plugin/SuppressWarningsPlugin.java

@@ -0,0 +1,25 @@
+package com.bartek.esa.core.plugin;
+
+import com.bartek.esa.core.archetype.JavaPlugin;
+import com.bartek.esa.core.model.enumeration.Severity;
+import com.bartek.esa.core.xml.XmlHelper;
+import com.bartek.esa.file.matcher.GlobMatcher;
+import com.github.javaparser.ast.CompilationUnit;
+import com.github.javaparser.ast.expr.AnnotationExpr;
+
+import javax.inject.Inject;
+
+public class SuppressWarningsPlugin extends JavaPlugin {
+
+    @Inject
+    public SuppressWarningsPlugin(GlobMatcher globMatcher, XmlHelper xmlHelper) {
+        super(globMatcher, xmlHelper);
+    }
+
+    @Override
+    public void run(CompilationUnit compilationUnit) {
+        compilationUnit.findAll(AnnotationExpr.class).stream()
+                .filter(expr -> expr.getName().getIdentifier().equals("SuppressWarnings"))
+                .forEach(expr -> addIssue(Severity.WARNING, getLineNumberFromExpression(expr), expr.toString()));
+    }
+}

src/main/resources/description.properties

@@ -83,3 +83,7 @@ com.bartek.esa.core.plugin.StrictModePlugin=Strict mode is turned on.\n\
 com.bartek.esa.core.plugin.ExternalStoragePlugin=External storage state is not checked.\n\
   There is attempt to access to external storage without checking its state.\n\
   External storage state should be checked through 'Environment.getExternalStorageState()' method.
+
+com.bartek.esa.core.plugin.SuppressWarningsPlugin=@SuppressWarnings annotation was found.\n\
+  The @SuppressWarnings annotation might be hiding useful warnings.\n\
+  Consider removing it.