#ref declares multiple loggers #loc
diff --git a/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/memory/ReplaceEmptyArrayToConstantFix.java b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/memory/ReplaceEmptyArrayToConstantFix.java
new file mode 100644
index 000000000000..a280e2e5bcb2
--- /dev/null
+++ b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/memory/ReplaceEmptyArrayToConstantFix.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2000-2016 JetBrains s.r.o.
+ *
+ * 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.
+ */
+package com.siyeh.ig.memory;
+
+import com.intellij.codeInspection.ProblemDescriptor;
+import com.intellij.openapi.project.Project;
+import com.intellij.psi.*;
+import com.intellij.psi.codeStyle.JavaCodeStyleManager;
+import com.siyeh.InspectionGadgetsBundle;
+import com.siyeh.ig.InspectionGadgetsFix;
+import org.jetbrains.annotations.Nls;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @author Konstantin Bulenkov
+ */
+public class ReplaceEmptyArrayToConstantFix extends InspectionGadgetsFix {
+ private final String myText;
+ private final String myName;
+
+ public ReplaceEmptyArrayToConstantFix(PsiClass aClass, PsiField field) {
+ myText = aClass.getQualifiedName() + "." + field.getName();
+ myName = InspectionGadgetsBundle.message("replace.with", aClass.getName() + "." + field.getName());
+ }
+
+ @Nls
+ @NotNull
+ @Override
+ public String getName() {
+ return myName;
+ }
+
+ @Nls
+ @NotNull
+ @Override
+ public String getFamilyName() {
+ return InspectionGadgetsBundle.message("constant.for.zero.length.array.quickfix.family");
+ }
+
+ @Override
+ protected void doFix(Project project, ProblemDescriptor descriptor) {
+ PsiExpression newExp = JavaPsiFacade.getInstance(project).getElementFactory().createExpressionFromText(myText, descriptor.getPsiElement());
+ PsiElement element = descriptor.getPsiElement().replace(newExp);
+ JavaCodeStyleManager.getInstance(project).shortenClassReferences(element);
+ }
+}
diff --git a/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/memory/UnnecessaryEmptyArrayUsageInspection.java b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/memory/UnnecessaryEmptyArrayUsageInspection.java
new file mode 100644
index 000000000000..5505aa678b0c
--- /dev/null
+++ b/plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/memory/UnnecessaryEmptyArrayUsageInspection.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2000-2016 JetBrains s.r.o.
+ *
+ * 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.
+ */
+package com.siyeh.ig.memory;
+
+import com.intellij.psi.*;
+import com.intellij.psi.util.PsiTreeUtil;
+import com.intellij.psi.util.PsiTypesUtil;
+import com.siyeh.InspectionGadgetsBundle;
+import com.siyeh.ig.BaseInspection;
+import com.siyeh.ig.BaseInspectionVisitor;
+import com.siyeh.ig.InspectionGadgetsFix;
+import com.siyeh.ig.psiutils.ExpressionUtils;
+import org.jetbrains.annotations.Nls;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * @author Konstantin Bulenkov
+ */
+public class UnnecessaryEmptyArrayUsageInspection extends BaseInspection {
+ @Nls
+ @NotNull
+ @Override
+ public String getDisplayName() {
+ return InspectionGadgetsBundle.message("constant.for.zero.length.array.display.name");
+ }
+
+ @NotNull
+ @Override
+ protected String buildErrorString(Object... infos) {
+ return InspectionGadgetsBundle.message("constant.for.zero.length.array.problem.descriptor");
+ }
+
+ @Nullable
+ @Override
+ protected InspectionGadgetsFix buildFix(Object... infos) {
+ return new ReplaceEmptyArrayToConstantFix((PsiClass)infos[0], (PsiField)infos[1]);
+ }
+
+ @Override
+ public BaseInspectionVisitor buildVisitor() {
+ return new BaseInspectionVisitor() {
+ @Override
+ public void visitNewExpression(PsiNewExpression expression) {
+ if (ExpressionUtils.isZeroLengthArrayConstruction(expression)) {
+ PsiType type = expression.getType();
+ if (type instanceof PsiArrayType) {
+ PsiType arrayType = ((PsiArrayType)type).getComponentType();
+ PsiClass typeClass = PsiTypesUtil.getPsiClass(arrayType);
+ if (typeClass != null) {
+ for (PsiField field : typeClass.getFields()) {
+ PsiModifierList modifiers = field.getModifierList();
+ if (modifiers != null
+ && !typeClass.isEquivalentTo(PsiTreeUtil.findFirstParent(expression, (e) -> e instanceof PsiClass))
+ && modifiers.hasModifierProperty(PsiModifier.FINAL)
+ && modifiers.hasModifierProperty(PsiModifier.PUBLIC)
+ && ExpressionUtils.isZeroLengthArrayConstruction(field.getInitializer())) {
+ registerError(expression, typeClass, field);
+ return;
+ }
+ }
+ }
+ }
+ }
+ super.visitNewExpression(expression);
+ }
+ };
+ }
+}
diff --git a/plugins/InspectionGadgets/src/inspectionDescriptions/UnnecessaryEmptyArrayUsage.html b/plugins/InspectionGadgets/src/inspectionDescriptions/UnnecessaryEmptyArrayUsage.html
new file mode 100644
index 000000000000..c1745110e071
--- /dev/null
+++ b/plugins/InspectionGadgets/src/inspectionDescriptions/UnnecessaryEmptyArrayUsage.html
@@ -0,0 +1,8 @@
+
+
+Reports on allocations of arrays with known lengths of zero when there is a constant for that in the class of array's type.
+
++ + + \ No newline at end of file