| /******************************************************************************* |
| * Copyright (c) 2021 Christian Pontesegger and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License_Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Christian Pontesegger - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.ease.ui.completion.tokenizer; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| public class BracketMatcher { |
| |
| private static final char OPEN = '('; |
| private static final char CLOSE = ')'; |
| |
| private final List<Bracket> fBrackets; |
| |
| public BracketMatcher(String input) { |
| fBrackets = new ArrayList<>(); |
| |
| for (int pos = 0; pos < input.length(); pos++) { |
| final char c = input.charAt(pos); |
| if (c == OPEN) { |
| fBrackets.add(0, new Bracket(pos, -1)); |
| |
| } else if (c == CLOSE) { |
| for (final Bracket bracket : fBrackets) { |
| if (bracket.getEnd() == -1) { |
| bracket.setEnd(pos); |
| break; |
| } |
| } |
| } |
| } |
| } |
| |
| public List<Bracket> getBrackets() { |
| return fBrackets; |
| } |
| |
| public boolean hasOpenBrackets() { |
| return getBrackets().stream().anyMatch(b -> b.getEnd() == -1); |
| } |
| |
| public List<Bracket> getOpenBrackets() { |
| return getBrackets().stream().filter(b -> b.getEnd() == -1).collect(Collectors.toList()); |
| } |
| } |