1 files changed, 68 insertions, 0 deletions
diff --git a/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/editor/ExceptionsAttributeEditor.java b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/editor/ExceptionsAttributeEditor.java
new file mode 100644
index 0000000000..783f714caa
--- /dev/null
+++ b/third_party/java/proguard/proguard5.3.3/src/proguard/classfile/editor/ExceptionsAttributeEditor.java
@@ -0,0 +1,68 @@
+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2017 Eric Lafortune @ GuardSquare
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 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 General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+package proguard.classfile.editor;
+
+import proguard.classfile.attribute.ExceptionsAttribute;
+
+/**
+ * This class can add exceptions to a given exceptions attribute.
+ * Exceptions to be added must have been added to the constant pool and filled
+ * out beforehand.
+ *
+ * @author Eric Lafortune
+ */
+public class ExceptionsAttributeEditor
+{
+    private ExceptionsAttribute targetExceptionsAttribute;
+
+
+    /**
+     * Creates a new ExceptionsAttributeEditor that will edit exceptions in the
+     * given exceptions attribute.
+     */
+    public ExceptionsAttributeEditor(ExceptionsAttribute targetExceptionsAttribute)
+    {
+        this.targetExceptionsAttribute = targetExceptionsAttribute;
+    }
+
+
+    /**
+     * Adds a given exception to the exceptions attribute.
+     */
+    public void addException(int exceptionIndex)
+    {
+        int   exceptionIndexTableLength = targetExceptionsAttribute.u2exceptionIndexTableLength;
+        int[] exceptionIndexTable       = targetExceptionsAttribute.u2exceptionIndexTable;
+
+        // Make sure there is enough space for the new exception.
+        if (exceptionIndexTable.length <= exceptionIndexTableLength)
+        {
+            targetExceptionsAttribute.u2exceptionIndexTable = new int[exceptionIndexTableLength+1];
+            System.arraycopy(exceptionIndexTable, 0,
+                             targetExceptionsAttribute.u2exceptionIndexTable, 0,
+                             exceptionIndexTableLength);
+            exceptionIndexTable = targetExceptionsAttribute.u2exceptionIndexTable;
+        }
+
+        // Add the exception.
+        exceptionIndexTable[targetExceptionsAttribute.u2exceptionIndexTableLength++] = exceptionIndex;
+    }
+}