/*
*
* 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.flex.compiler.internal.tree.as;
import org.apache.flex.compiler.internal.parsing.as.OffsetLookup;
import org.apache.flex.compiler.parsing.IASToken;
import org.apache.flex.compiler.tree.as.IOperatorNode;
/**
* ActionScript parse tree node representing a binary operator expression (e.g.
* x + 2 or var1 == var2)
*/
public abstract class OperatorNodeBase extends ExpressionNodeBase implements IOperatorNode
{
/**
* Constructor.
*
* @param operator ASToken holding the operator itself
*/
public OperatorNodeBase(IASToken operator)
{
if (operator != null)
{
operatorStart = operator.getStart();
setLine(operator.getLine());
setColumn(operator.getColumn());
setSourcePath(operator.getSourcePath());
}
}
/**
* Copy constructor.
*
* @param other The node to copy.
*/
protected OperatorNodeBase(OperatorNodeBase other)
{
super(other);
this.operatorStart = other.operatorStart;
}
/**
* Offset where the operator starts
*/
protected int operatorStart = UNKNOWN;
//
// NodeBase overrides
//
@Override
public boolean isTerminal()
{
return false;
}
/*
* For debugging only. Builds a string such as <code>"+"</code> from the
* operator.
*/
@Override
protected boolean buildInnerString(StringBuilder sb)
{
sb.append('"');
sb.append(getOperatorText());
sb.append('"');
return true;
}
//
// IOperatorNode implementations
//
@Override
public int getOperatorStart()
{
final OffsetLookup offsetLookup = tryGetOffsetLookup();
return offsetLookup != null ?
offsetLookup.getLocalOffset(operatorStart) :
operatorStart;
}
@Override
public int getOperatorEnd()
{
int operatorStart = getOperatorStart();
return operatorStart != -1 ? operatorStart + getOperatorText().length() : operatorStart;
}
@Override
public int getOperatorAbsoluteStart()
{
return operatorStart;
}
@Override
public int getOperatorAbsoluteEnd()
{
return operatorStart != -1 ? operatorStart + getOperatorText().length() : operatorStart;
}
//
// Other methods
//
public String getOperatorText()
{
OperatorType operator = getOperator();
return operator != null ? operator.getOperatorText() : "";
}
}