Add several classes from dx tool to the dexgen project

[android-x86/dalvik.git] / dexgen / src / com / android / dexgen / dex / code / form / SpecialFormat.java

diff --git a/dexgen/src/com/android/dexgen/dex/code/form/SpecialFormat.java b/dexgen/src/com/android/dexgen/dex/code/form/SpecialFormat.java
new file mode 100644 (file)
index 0000000..c75f18f
--- /dev/null
+++ b/dexgen/src/com/android/dexgen/dex/code/form/SpecialFormat.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * 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.android.dexgen.dex.code.form;
+
+import com.android.dexgen.dex.code.DalvInsn;
+import com.android.dexgen.dex.code.DalvOps;
+import com.android.dexgen.dex.code.InsnFormat;
+import com.android.dexgen.util.AnnotatedOutput;
+
+/**
+ * Instruction format for nonstandard format instructions, which aren't
+ * generally real instructions but do end up appearing in instruction
+ * lists. Most of the overridden methods on this class end up throwing
+ * exceptions, as code should know (implicitly or explicitly) to avoid
+ * using this class. The one exception is {@link #isCompatible}, which
+ * always returns {@code true}.
+ */
+public final class SpecialFormat extends InsnFormat {
+    /** {@code non-null;} unique instance of this class */
+    public static final InsnFormat THE_ONE = new SpecialFormat();
+
+    /**
+     * Constructs an instance. This class is not publicly
+     * instantiable. Use {@link #THE_ONE}.
+     */
+    private SpecialFormat() {
+        // This space intentionally left blank.
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public String insnArgString(DalvInsn insn) {
+        throw new RuntimeException("unsupported");
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public String insnCommentString(DalvInsn insn, boolean noteIndices) {
+        throw new RuntimeException("unsupported");
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public int codeSize() {
+        throw new RuntimeException("unsupported");
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public boolean isCompatible(DalvInsn insn) {
+        return true;
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public InsnFormat nextUp() {
+        throw new RuntimeException("unsupported");
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void writeTo(AnnotatedOutput out, DalvInsn insn) {
+        throw new RuntimeException("unsupported");
+    }
+}