1 files changed, 79 insertions, 0 deletions
diff --git a/src/proguard/evaluation/value/InitialValueFactory.java b/src/proguard/evaluation/value/InitialValueFactory.java
new file mode 100644
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+++ b/src/proguard/evaluation/value/InitialValueFactory.java
@@ -0,0 +1,79 @@
+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
+ *
+ * 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.evaluation.value;
+
+import proguard.classfile.ClassConstants;
+
+/**
+ * This value factory creates initial values for fields and array elements,
+ * with the help of a given value factory. Note that this class itself doesn't
+ * implement ValueFactory.
+ *
+ * @author Eric Lafortune
+ */
+public class InitialValueFactory
+{
+    private final ValueFactory valueFactory;
+
+
+    /**
+     * Creates a new InitialValueFactory.
+     * @param valueFactory the value factory that will actually create the
+     *                     values.
+     */
+    public InitialValueFactory(ValueFactory valueFactory)
+    {
+        this.valueFactory = valueFactory;
+    }
+
+
+    /**
+     * Creates an initial value (0, 0L, 0.0f, 0.0, null) of the given type.
+     */
+    public Value createValue(String type)
+    {
+        switch (type.charAt(0))
+        {
+            case ClassConstants.TYPE_BOOLEAN:
+            case ClassConstants.TYPE_BYTE:
+            case ClassConstants.TYPE_CHAR:
+            case ClassConstants.TYPE_SHORT:
+            case ClassConstants.TYPE_INT:
+                return valueFactory.createIntegerValue(0);
+
+            case ClassConstants.TYPE_LONG:
+                return valueFactory.createLongValue(0L);
+
+            case ClassConstants.TYPE_FLOAT:
+                return valueFactory.createFloatValue(0.0f);
+
+            case ClassConstants.TYPE_DOUBLE:
+                return valueFactory.createDoubleValue(0.0);
+
+            case ClassConstants.TYPE_CLASS_START:
+            case ClassConstants.TYPE_ARRAY:
+                return valueFactory.createReferenceValueNull();
+
+            default:
+                throw new IllegalArgumentException("Invalid type ["+type+"]");
+        }
+    }
+}