src/main/java/ftbsc/lll/mapper/impl/TinyV2Mapper.java


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package ftbsc.lll.mapper.impl;

import com.google.auto.service.AutoService;
import ftbsc.lll.exceptions.MalformedMappingsException;
import ftbsc.lll.mapper.IMappingFormat;
import ftbsc.lll.mapper.tools.Mapper;
import ftbsc.lll.mapper.tools.data.ClassData;

import java.util.List;
import java.util.regex.Pattern;

/**
 * A {@link IMappingFormat} capable of parsing TinyV2 mappings.
 */
@AutoService(IMappingFormat.class)
public class TinyV2Mapper implements IMappingFormat {

   @Override
   public boolean claim(List<String> lines) {
      return Pattern.compile("tiny\t2\t[0-9]\t[a-zA-Z]*\t[a-zA-Z]*")
         .matcher(lines.get(0)).matches();
   }

   @Override
   public Mapper getMapper(List<String> lines, boolean ignoreErrors) throws MalformedMappingsException {
      Mapper result = new Mapper();
      String currentClass = "";
      for(int i = 1; i < lines.size(); i++) {
         String currentLine = lines.get(i);
         String[] tokens = currentLine.trim().split("\t");
         int tabCount = currentLine.indexOf(tokens[0]); //get number of leading tabs
         switch(tabCount) {
            case 0: //classes
               if(tokens.length == 3) {
                  if(tokens[0].charAt(0) == 'c') {
                     result.getRawMappings().put(tokens[1], new ClassData(tokens[1], tokens[2]));
                     currentClass = tokens[1];
                  } else if(!ignoreErrors)
                     throw new MalformedMappingsException(i, "root-level element must be class");
                  continue;
               }
               break;
            case 1: //class members
               if(currentClass.isEmpty()) {
                  if(ignoreErrors) continue;
                  else throw new MalformedMappingsException(i, "class member without parent class");
               }
               switch(tokens[0].charAt(0)) {
                  case 'm': //methods
                     if(tokens.length == 4)
                        break;
                     result.getClassData(currentClass).addMethod(tokens[2], tokens[3], tokens[1]);
                     continue;
                  case 'f': //fields
                     if(tokens.length == 4)
                        break;
                     result.getClassData(currentClass).addField(tokens[2], tokens[3], tokens[1]);
                     continue;
               }
               break;
            case 2: //parameters, our mappers don't really support those
               break;
         }
         if(!ignoreErrors)
            throw new MalformedMappingsException(i, "wrong number of tab-separated tokens");
      }
      return result;
   }
}