diff options
Diffstat (limited to 'dx/src/com/android/dx/cf/attrib/AttConstantValue.java')
-rw-r--r-- | dx/src/com/android/dx/cf/attrib/AttConstantValue.java | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/dx/src/com/android/dx/cf/attrib/AttConstantValue.java b/dx/src/com/android/dx/cf/attrib/AttConstantValue.java new file mode 100644 index 0000000..aa6d1b3 --- /dev/null +++ b/dx/src/com/android/dx/cf/attrib/AttConstantValue.java @@ -0,0 +1,77 @@ +/* + * 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.dx.cf.attrib; + +import com.android.dx.rop.cst.CstDouble; +import com.android.dx.rop.cst.CstFloat; +import com.android.dx.rop.cst.CstInteger; +import com.android.dx.rop.cst.CstLong; +import com.android.dx.rop.cst.CstString; +import com.android.dx.rop.cst.TypedConstant; + +/** + * Attribute class for standard {@code ConstantValue} attributes. + */ +public final class AttConstantValue extends BaseAttribute { + /** {@code non-null;} attribute name for attributes of this type */ + public static final String ATTRIBUTE_NAME = "ConstantValue"; + + /** {@code non-null;} the constant value */ + private final TypedConstant constantValue; + + /** + * Constructs an instance. + * + * @param constantValue {@code non-null;} the constant value, which must + * be an instance of one of: {@code CstString}, + * {@code CstInteger}, {@code CstLong}, + * {@code CstFloat}, or {@code CstDouble} + */ + public AttConstantValue(TypedConstant constantValue) { + super(ATTRIBUTE_NAME); + + if (!((constantValue instanceof CstString) || + (constantValue instanceof CstInteger) || + (constantValue instanceof CstLong) || + (constantValue instanceof CstFloat) || + (constantValue instanceof CstDouble))) { + if (constantValue == null) { + throw new NullPointerException("constantValue == null"); + } + throw new IllegalArgumentException("bad type for constantValue"); + } + + this.constantValue = constantValue; + } + + /** {@inheritDoc} */ + public int byteLength() { + return 8; + } + + /** + * Gets the constant value of this instance. The returned value + * is an instance of one of: {@code CstString}, + * {@code CstInteger}, {@code CstLong}, + * {@code CstFloat}, or {@code CstDouble}. + * + * @return {@code non-null;} the constant value + */ + public TypedConstant getConstantValue() { + return constantValue; + } +} |