| /* |
| * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package propertiesparser.parser; |
| |
| import propertiesparser.parser.MessageType.CompoundType; |
| import propertiesparser.parser.MessageType.OrType; |
| import propertiesparser.parser.MessageType.SimpleType; |
| import propertiesparser.parser.MessageType.UnionType; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * An object to represent the comment that may precede the property |
| * specification in a Message. |
| * The comment is modelled as a list of fields, where the fields correspond |
| * to the placeholder values (e.g. {0}, {1}, etc) within the message value. |
| */ |
| public final class MessageInfo { |
| |
| /** The fields of the Info object. */ |
| List<MessageType> types = new ArrayList<>(); |
| |
| MessageInfo(String text) throws IllegalArgumentException { |
| if (text != null) { |
| if (!text.startsWith("# ")) |
| throw new IllegalArgumentException(); |
| String[] segs = text.substring(2).split(", "); |
| types = new ArrayList<>(); |
| for (String seg : segs) { |
| types.add(parseType(seg)); |
| } |
| } |
| } |
| |
| public List<MessageType> getTypes() { |
| return types; |
| } |
| |
| boolean isEmpty() { |
| return types.isEmpty(); |
| } |
| |
| @Override |
| public String toString() { |
| return types.toString(); |
| } |
| |
| /** |
| * Split the type comment into multiple alternatives (separated by 'or') - then parse each of them |
| * individually and form an 'or' type. |
| */ |
| MessageType parseType(String text) { |
| int commentStart = text.indexOf("("); |
| if (commentStart != -1) { |
| //remove optional comment |
| text = text.substring(0, commentStart); |
| } |
| text = text.substring(text.indexOf(": ") + 2); |
| String[] alternatives = text.split(" " + OrType.OR_NAME + " "); |
| MessageType[] types = new MessageType[alternatives.length]; |
| for (int i = 0 ; i < alternatives.length ; i++) { |
| types[i] = parseAlternative(alternatives[i].trim()); |
| } |
| return types.length > 1 ? |
| new OrType(types) : types[0]; |
| } |
| |
| /** |
| * Parse a subset of the type comment; valid matches are simple types, compound types, |
| * union types and custom types. |
| */ |
| MessageType parseAlternative(String text) { |
| //try with custom types |
| if (text.charAt(0) == '\'') { |
| int end = text.indexOf('\'', 1); |
| return new MessageType.CustomType(text.substring(1, end)); |
| } |
| //try with simple types |
| for (SimpleType st : SimpleType.values()) { |
| if (text.equals(st.kindName())) { |
| return st; |
| } |
| } |
| //try with compound types |
| for (CompoundType.Kind ck : CompoundType.Kind.values()) { |
| if (text.startsWith(ck.kindName)) { |
| MessageType elemtype = parseAlternative(text.substring(ck.kindName.length() + 1).trim()); |
| return new CompoundType(ck, elemtype); |
| } |
| } |
| //try with union types |
| for (UnionType.Kind uk : UnionType.Kind.values()) { |
| if (text.startsWith(uk.kindName)) { |
| return new UnionType(uk); |
| } |
| } |
| //no match - report a warning |
| System.err.println("WARNING - unrecognized type: " + text); |
| return SimpleType.UNKNOWN; |
| } |
| |
| /** Dummy message info to be used when no resource key comment is available. */ |
| static final MessageInfo dummyInfo = new MessageInfo(null); |
| } |