1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.dexgen.rop.type; 18 19 import com.android.dexgen.util.ToHuman; 20 21 /** 22 * Object which has an associated type, possibly itself. 23 */ 24 public interface TypeBearer 25 extends ToHuman { 26 /** 27 * Gets the type associated with this instance. 28 * 29 * @return {@code non-null;} the type 30 */ 31 public Type getType(); 32 33 /** 34 * Gets the frame type corresponding to this type. This method returns 35 * {@code this}, except if {@link Type#isIntlike} on the underlying 36 * type returns {@code true} but the underlying type is not in 37 * fact {@link Type#INT}, in which case this method returns an instance 38 * whose underlying type <i>is</i> {@code INT}. 39 * 40 * @return {@code non-null;} the frame type for this instance 41 */ 42 public TypeBearer getFrameType(); 43 44 /** 45 * Gets the basic type corresponding to this instance. 46 * 47 * @return the basic type; one of the {@code BT_*} constants 48 * defined by {@link Type} 49 */ 50 public int getBasicType(); 51 52 /** 53 * Gets the basic type corresponding to this instance's frame type. This 54 * is equivalent to {@code getFrameType().getBasicType()}, and 55 * is the same as calling {@code getFrameType()} unless this 56 * instance is an int-like type, in which case this method returns 57 * {@code BT_INT}. 58 * 59 * @see #getBasicType 60 * @see #getFrameType 61 * 62 * @return the basic frame type; one of the {@code BT_*} constants 63 * defined by {@link Type} 64 */ 65 public int getBasicFrameType(); 66 67 /** 68 * Returns whether this instance represents a constant value. 69 * 70 * @return {@code true} if this instance represents a constant value 71 * and {@code false} if not 72 */ 73 public boolean isConstant(); 74 } 75
