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.dx.rop.code; 18 19 import com.android.dx.rop.cst.Constant; 20 import com.android.dx.rop.type.StdTypeList; 21 import com.android.dx.rop.type.Type; 22 import com.android.dx.rop.type.TypeList; 23 24 /** 25 * Instruction which contains an explicit reference to a constant 26 * but which cannot throw an exception. 27 */ 28 public final class PlainCstInsn 29 extends CstInsn { 30 /** 31 * Constructs an instance. 32 * 33 * @param opcode {@code non-null;} the opcode 34 * @param position {@code non-null;} source position 35 * @param result {@code null-ok;} spec for the result, if any 36 * @param sources {@code non-null;} specs for all the sources 37 * @param cst {@code non-null;} the constant 38 */ 39 public PlainCstInsn(Rop opcode, SourcePosition position, 40 RegisterSpec result, RegisterSpecList sources, 41 Constant cst) { 42 super(opcode, position, result, sources, cst); 43 44 if (opcode.getBranchingness() != Rop.BRANCH_NONE) { 45 throw new IllegalArgumentException("bogus branchingness"); 46 } 47 } 48 49 /** {@inheritDoc} */ 50 @Override 51 public TypeList getCatches() { 52 return StdTypeList.EMPTY; 53 } 54 55 /** {@inheritDoc} */ 56 @Override 57 public void accept(Visitor visitor) { 58 visitor.visitPlainCstInsn(this); 59 } 60 61 /** {@inheritDoc} */ 62 @Override 63 public Insn withAddedCatch(Type type) { 64 throw new UnsupportedOperationException("unsupported"); 65 } 66 67 /** {@inheritDoc} */ 68 @Override 69 public Insn withRegisterOffset(int delta) { 70 return new PlainCstInsn(getOpcode(), getPosition(), 71 getResult().withOffset(delta), 72 getSources().withOffset(delta), 73 getConstant()); 74 } 75 76 /** {@inheritDoc} */ 77 @Override 78 public Insn withNewRegisters(RegisterSpec result, 79 RegisterSpecList sources) { 80 81 return new PlainCstInsn(getOpcode(), getPosition(), 82 result, 83 sources, 84 getConstant()); 85 86 } 87 } 88
