Add several classes from dx tool to the dexgen project

[android-x86/dalvik.git] / dexgen / src / com / android / dexgen / rop / code / SwitchInsn.java

diff --git a/dexgen/src/com/android/dexgen/rop/code/SwitchInsn.java b/dexgen/src/com/android/dexgen/rop/code/SwitchInsn.java
new file mode 100644 (file)
index 0000000..ee4f4b6
--- /dev/null
+++ b/dexgen/src/com/android/dexgen/rop/code/SwitchInsn.java
@@ -0,0 +1,119 @@
+/*
+ * 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.rop.code;
+
+import com.android.dexgen.rop.type.StdTypeList;
+import com.android.dexgen.rop.type.Type;
+import com.android.dexgen.rop.type.TypeList;
+import com.android.dexgen.util.IntList;
+
+/**
+ * Instruction which contains switch cases.
+ */
+public final class SwitchInsn
+        extends Insn {
+    /** {@code non-null;} list of switch cases */
+    private final IntList cases;
+
+    /**
+     * Constructs an instance.
+     *
+     * @param opcode {@code non-null;} the opcode
+     * @param position {@code non-null;} source position
+     * @param result {@code null-ok;} spec for the result, if any
+     * @param sources {@code non-null;} specs for all the sources
+     * @param cases {@code non-null;} list of switch cases
+     */
+    public SwitchInsn(Rop opcode, SourcePosition position, RegisterSpec result,
+                      RegisterSpecList sources, IntList cases) {
+        super(opcode, position, result, sources);
+
+        if (opcode.getBranchingness() != Rop.BRANCH_SWITCH) {
+            throw new IllegalArgumentException("bogus branchingness");
+        }
+
+        if (cases == null) {
+            throw new NullPointerException("cases == null");
+        }
+
+        this.cases = cases;
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public String getInlineString() {
+        return cases.toString();
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public TypeList getCatches() {
+        return StdTypeList.EMPTY;
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void accept(Visitor visitor) {
+        visitor.visitSwitchInsn(this);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public Insn withAddedCatch(Type type) {
+        throw new UnsupportedOperationException("unsupported");
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public Insn withRegisterOffset(int delta) {
+        return new SwitchInsn(getOpcode(), getPosition(),
+                              getResult().withOffset(delta),
+                              getSources().withOffset(delta),
+                              cases);
+    }
+
+    /**
+     * {@inheritDoc}
+     *
+     * <p> SwitchInsn always compares false. The current use for this method
+     * never encounters {@code SwitchInsn}s
+     */
+    @Override
+    public boolean contentEquals(Insn b) {
+        return false;
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public Insn withNewRegisters(RegisterSpec result,
+            RegisterSpecList sources) {
+
+        return new SwitchInsn(getOpcode(), getPosition(),
+                              result,
+                              sources,
+                              cases);
+    }
+
+    /**
+     * Gets the list of switch cases.
+     *
+     * @return {@code non-null;} the case list
+     */
+    public IntList getCases() {
+        return cases;
+    }
+}