| /******************************************************************************* |
| * Copyright (c) 2009 xored software, Inc. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * xored software, Inc. - initial API and Implementation (Vladimir Belov) |
| *******************************************************************************/ |
| |
| package org.eclipse.dltk.javascript.ast; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.dltk.ast.ASTVisitor; |
| import org.eclipse.dltk.javascript.parser.JSParser; |
| |
| public class UnaryOperation extends Expression { |
| |
| private Expression expression; |
| private int operation = -1; |
| private int operationPos = -1; |
| |
| public UnaryOperation(JSNode parent) { |
| super(parent); |
| } |
| |
| /** |
| * @see org.eclipse.dltk.ast.ASTNode#traverse(org.eclipse.dltk.ast.ASTVisitor) |
| */ |
| @Override |
| public void traverse(ASTVisitor visitor) throws Exception { |
| if (visitor.visit(this)) { |
| if (expression != null) |
| expression.traverse(visitor); |
| visitor.endvisit(this); |
| } |
| } |
| |
| public Expression getExpression() { |
| return this.expression; |
| } |
| |
| public void setExpression(Expression expression) { |
| this.expression = expression; |
| } |
| |
| public int getOperation() { |
| return this.operation; |
| } |
| |
| public void setOperation(int operation) { |
| this.operation = operation; |
| } |
| |
| public int getOperationPosition() { |
| return this.operationPos; |
| } |
| |
| public void setOperationPosition(int operationPos) { |
| this.operationPos = operationPos; |
| } |
| |
| public String getOperationText() { |
| return Keywords.fromToken(operation); |
| } |
| |
| public boolean isPostfix() { |
| return operation == JSParser.PINC || operation == JSParser.PDEC; |
| } |
| |
| public boolean isTextOperator() { |
| return operation == JSParser.DELETE || operation == JSParser.TYPEOF |
| || operation == JSParser.VOID; |
| } |
| |
| @Override |
| public String toSourceString(String indentationString) { |
| |
| Assert.isTrue(sourceStart() >= 0); |
| Assert.isTrue(sourceEnd() > 0); |
| Assert.isTrue(operationPos > 0); |
| Assert.isTrue(operation > 0); |
| |
| final StringBuilder buffer = new StringBuilder(); |
| |
| if (!isPostfix()) { |
| buffer.append(getOperationText()); |
| if (isTextOperator()) { |
| buffer.append(" "); |
| } |
| } |
| |
| buffer.append(expression.toSourceString(indentationString)); |
| |
| if (isPostfix()) { |
| buffer.append(getOperationText()); |
| } |
| |
| return buffer.toString(); |
| } |
| |
| } |