| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.royale.abc.semantics; |
| |
| import org.apache.royale.abc.ABCConstants; |
| |
| /** |
| * An ArbitraryOperandsInstruction holds an array of operands as specified by |
| * the caller, or in some special cases as set by a fixup pass. |
| */ |
| public class ArbitraryOperandsInstruction extends Instruction |
| { |
| /** |
| * Construct an ArbitraryOperandsInstruction. |
| * |
| * @param opcode - the opcode. Passed to superclass constructor. |
| * @param operands - the operands. May be null. |
| */ |
| public ArbitraryOperandsInstruction(int opcode, Object[] operands) |
| { |
| super(opcode); |
| this.operands = operands; |
| } |
| |
| /** |
| * "Copy" construct an ArbitraryOperandsInstruction with a new opcode. |
| * |
| * @param opcode - the opcode. |
| * @param original - the original ArbitraryOperandsInstruction whose |
| * operands are to be incorporated into the new instruction. |
| */ |
| public ArbitraryOperandsInstruction(int opcode, ArbitraryOperandsInstruction original) |
| { |
| this(opcode, original.operands); |
| } |
| |
| /** |
| * The instruction's operands. |
| */ |
| private Object[] operands; |
| |
| @Override |
| public String toString() |
| { |
| StringBuffer result = new StringBuffer(super.toString()); |
| |
| result.append("["); |
| |
| for (Object x : operands) |
| { |
| result.append(x); |
| result.append(","); |
| } |
| result.append("]"); |
| |
| return result.toString(); |
| } |
| |
| /** |
| * Fetch an operand. |
| * |
| * @param index - the index of the operand of interest. |
| * @return the operand at the specified index. |
| */ |
| @Override |
| public Object getOperand(int index) |
| { |
| return this.operands[index]; |
| } |
| |
| /** |
| * @return the instruction's operand count; if the operands are not yet |
| * present, then return 0. |
| */ |
| @Override |
| public int getOperandCount() |
| { |
| return this.operands != null ? this.operands.length : 0; |
| } |
| |
| /** |
| * Set this instruction's operands in a fixup pass. |
| * |
| * @param operands - the instruction's operands. |
| */ |
| @Override |
| public void setOperands(Object[] operands) |
| { |
| this.operands = operands; |
| } |
| |
| /** |
| * Set the temporary register operands of a hasnext2 instruction. |
| */ |
| @Override |
| public void setTempRegisters(Object[] tempregs) |
| { |
| assert opcode == ABCConstants.OP_hasnext2 : "Cannot set temp registers of " + this; |
| this.operands = tempregs; |
| } |
| } |