| /* |
| * 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 buildlexer; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.jena.iri.impl.PatternCompiler ; |
| import org.apache.jena.iri.impl.VarPattern ; |
| |
| |
| abstract public class Expansion { |
| |
| int errors[] = new int[100]; |
| |
| String comments[] = new String[100]; |
| int cIx = 0; |
| int eIx = 0; |
| |
| public Expansion() { |
| } |
| |
| Map<String, String> doing = new HashMap<String, String>(); |
| |
| abstract public void doIt(String regex, int eCount, int eCodes[], int cCount, String coms[]); |
| |
| public void expand(String data) { |
| int at; |
| |
| at = data.indexOf("@{labelI"); |
| if ( at==-1 ) |
| at = data.indexOf("@{"); |
| if (at == -1) |
| doIt(data, eIx, errors, cIx, comments); |
| else { |
| // String prefix = data.substring(0, at); |
| int match = data.indexOf('}', at); |
| String varName = data.substring(at + 2, match); |
| if (doing.containsKey(varName)) { |
| // System.err.println("Possible Recursion: " + varName); |
| String p = doing.get(varName); |
| String nData = data.replaceAll("@\\{" + varName + "\\}", p); |
| expand(nData); |
| } else { |
| // String postfix = data.substring(match + 1); |
| VarPattern vp[] = PatternCompiler.lookup(varName); |
| int eIxBase = eIx; |
| for (int i = 0; i < vp.length; i++) { |
| |
| addErrors(vp[i].errors); |
| String nData; |
| String p; |
| try { |
| p = vp[i].pattern; |
| p = p.replaceAll("\\\\", "\\\\\\\\"); |
| p = p.replaceAll("\\$", "\\\\\\$"); |
| p = "(" + p + ")"; |
| doing.put(varName, p); |
| nData = data.replaceAll("@\\{" + varName + "\\}", p); |
| } catch (RuntimeException e) { |
| System.err.println(data); |
| System.err.println(varName); |
| System.err.println(vp[i].pattern); |
| throw e; |
| |
| } |
| comments[cIx++] = varName + " => " + p; |
| expand(nData); |
| eIx = eIxBase; |
| cIx--; |
| } |
| doing.remove(varName); |
| } |
| } |
| } |
| |
| void addErrors(int e[]) { |
| for (int i = 0; i < e.length; i++) |
| errors[eIx++] = e[i]; |
| } |
| |
| } |