/*
* Copyright 2007 Google Inc.
*
* 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.google.test.metric.method;
import static java.util.Collections.unmodifiableList;
import java.util.ArrayList;
import java.util.List;
import com.google.test.metric.method.op.stack.Load;
import com.google.test.metric.method.op.stack.StackOperation;
public class Block {
private final String id;
private final List<Block> previousBlocks = new ArrayList<Block>();
private final List<StackOperation> operations = new ArrayList<StackOperation>();
private final List<Block> nextBlocks = new ArrayList<Block>();
private final boolean isTerminal = false;
private Constant exception;
public Block(String id) {
this.id = id;
}
public void addNextBlock(Block nextBlock) {
if (!nextBlocks.contains(nextBlock)) {
nextBlocks.add(nextBlock);
nextBlock.previousBlocks.add(this);
}
}
public void addOp(StackOperation operation) {
operations.add(operation);
}
public List<StackOperation> getOperations() {
return operations;
}
@Override
public String toString() {
StringBuilder buf = new StringBuilder();
buf.append(exception == null ? "Block" : "ExceptionHandlerBlock");
buf.append("[");
buf.append(id);
String sep = " -> ";
for (Block next : nextBlocks) {
buf.append(sep);
buf.append(next.id);
sep = ", ";
}
sep = " <- ";
for (Block next : previousBlocks) {
buf.append(sep);
buf.append(next.id);
sep = ", ";
}
buf.append("]{\n");
for (StackOperation operation : operations) {
buf.append(" ");
buf.append(operation);
buf.append("\n");
}
buf.append("}");
return buf.toString();
}
public List<Block> getNextBlocks() {
return unmodifiableList(nextBlocks);
}
public boolean isTerminal() {
return isTerminal;
}
public String getId() {
return id;
}
public void setExceptionHandler(int lineNumber, Constant exception) {
if (this.exception == null) {
operations.add(0, new Load(lineNumber, exception));
}
this.exception = exception;
}
}