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package ftbsc.lll.mapper;

import ftbsc.lll.exceptions.MalformedMappingsException;
import ftbsc.lll.exceptions.MappingNotFoundException;
import ftbsc.lll.mapper.tools.data.ClassData;
import ftbsc.lll.mapper.tools.data.FieldData;
import ftbsc.lll.mapper.tools.data.MethodData;

import java.util.*;

/**
 * The shared interface between all mappers.
 */
public interface IMapper {
   /**
    * Checks whether this mapper can process the given lines.
    * @param lines the lines to read
    * @return whether this type of mapper can process these lines
    */
   boolean claim(List<String> lines);

   /**
    * Defines a priority for this implementation: the higher the number,
    * the higher the priority.
    * This is used to resolve conflicts when multiple mappers attempt to
    * {@link #claim(List) claim} a given mapping file.
    * @return the priority
    */
   default int priority() {
      return 0;
   }

   /**
    * Populates the {@link IMapper} given the lines, ignoring errors depending on the
    * given ignoreErrors flag.
    * @param lines the lines to read
    * @param ignoreErrors try to ignore errors and keep going
    * @throws MalformedMappingsException if an error is encountered and ignoreErrors is false
    */
   void populate(List<String> lines, boolean ignoreErrors) throws MalformedMappingsException;

   /**
    * Builds an {@link IMapper} that functions in reverse to this one (i.e. one that
    * considers as "mapped" what this one considers plain, and vice versa).
    * @return the inverted mapper
    */
   IMapper getInverted();

   /**
    * Completely resets the mapper, clearing it of all existing mappings.
    */
   void reset();

   /**
    * Gets the {@link ClassData}
    * @param name the plain internal name of the desired class
    * @return the obfuscated name of the class
    * @throws MappingNotFoundException if no mapping is found
    */
   ClassData getClassData(String name) throws MappingNotFoundException;

   /**
    * Gets the obfuscated name of a class member (field or method).
    * @param parent the plain internal name of the parent class
    * @param name the field name
    * @param descriptor the descriptor of the member (only for methods)
    * @return the obfuscated name of the given member
    * @throws MappingNotFoundException if no mapping is found
    */
   MethodData getMethodData(String parent, String name, String descriptor) throws MappingNotFoundException;

   /**
    * Gets the obfuscated name of a class member (field or method).
    * @param parent the plain internal name of the parent class
    * @param name the field name
    * @return the obfuscated name of the given member
    * @throws MappingNotFoundException if no mapping is found
    */
   FieldData getFieldData(String parent, String name) throws MappingNotFoundException;
}