Add several classes from dx tool to the dexgen project

[android-x86/dalvik.git] / dexgen / src / com / android / dexgen / rop / annotation / AnnotationsList.java

diff --git a/dexgen/src/com/android/dexgen/rop/annotation/AnnotationsList.java b/dexgen/src/com/android/dexgen/rop/annotation/AnnotationsList.java
new file mode 100644 (file)
index 0000000..1159932
--- /dev/null
+++ b/dexgen/src/com/android/dexgen/rop/annotation/AnnotationsList.java
@@ -0,0 +1,91 @@
+/*
+ * 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.annotation;
+
+import com.android.dexgen.util.FixedSizeList;
+
+/**
+ * List of {@link Annotations} instances.
+ */
+public final class AnnotationsList
+        extends FixedSizeList {
+    /** {@code non-null;} immutable empty instance */
+    public static final AnnotationsList EMPTY = new AnnotationsList(0);
+
+    /**
+     * Constructs an immutable instance which is the combination of
+     * the two given instances. The two instances must each have the
+     * same number of elements, and each pair of elements must contain
+     * disjoint sets of types.
+     *
+     * @param list1 {@code non-null;} an instance
+     * @param list2 {@code non-null;} the other instance
+     * @return {@code non-null;} the combination
+     */
+    public static AnnotationsList combine(AnnotationsList list1,
+            AnnotationsList list2) {
+        int size = list1.size();
+
+        if (size != list2.size()) {
+            throw new IllegalArgumentException("list1.size() != list2.size()");
+        }
+
+        AnnotationsList result = new AnnotationsList(size);
+
+        for (int i = 0; i < size; i++) {
+            Annotations a1 = list1.get(i);
+            Annotations a2 = list2.get(i);
+            result.set(i, Annotations.combine(a1, a2));
+        }
+
+        result.setImmutable();
+        return result;
+    }
+
+    /**
+     * Constructs an instance. All indices initially contain {@code null}.
+     *
+     * @param size the size of the list
+     */
+    public AnnotationsList(int size) {
+        super(size);
+    }
+
+    /**
+     * Gets the element at the given index. It is an error to call
+     * this with the index for an element which was never set; if you
+     * do that, this will throw {@code NullPointerException}.
+     *
+     * @param n {@code >= 0, < size();} which index
+     * @return {@code non-null;} element at that index
+     */
+    public Annotations get(int n) {
+        return (Annotations) get0(n);
+    }
+
+    /**
+     * Sets the element at the given index. The given element must be
+     * immutable.
+     *
+     * @param n {@code >= 0, < size();} which index
+     * @param a {@code null-ok;} the element to set at {@code n}
+     */
+    public void set(int n, Annotations a) {
+        a.throwIfMutable();
+        set0(n, a);
+    }
+}