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package ftbsc.lll.mapper.tools.data;
import ftbsc.lll.exceptions.MappingNotFoundException;
import ftbsc.lll.mapper.IMapper;
import ftbsc.lll.mapper.tools.MappingUtils;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
/**
* Container class used to store information about classes.
*/
public class ClassData {
/**
* The internal (like the fully-qualified name, but with '/' instead
* of '.') of the class.
*/
public final String name;
/**
* The mapped internal (like the fully-qualified name, but with '/'
* instead of '.') of the class.
*/
public final String nameMapped;
/**
* A {@link Map} tying each method's signature to its data class.
*/
private final Map<MethodSignature, MethodData> methods;
/**
* A {@link Map} tying each field's name to its data class.
*/
private final Map<String, FieldData> fields;
/**
* The constructor. It takes in the names (plain and mapped) of a class.
* @param name the plain name
* @param nameMapped the mapped name
*/
public ClassData(String name, String nameMapped) {
this.name = name;
this.nameMapped = nameMapped;
this.methods = new HashMap<>();
this.fields = new HashMap<>();
}
/**
* Adds a method to the target class.
* @param name the method name
* @param nameMapped the mapped method name
* @param descriptor the descriptor of the method
*/
public void addMethod(String name, String nameMapped, String descriptor) {
MethodData data = new MethodData(this, name, nameMapped, descriptor);
this.methods.put(data.signature, data);
}
/**
* Adds a field to the target class.
* @param plain the name of the field
* @param mapped the mapped name of the field
*/
public void addField(String plain, String mapped) {
this.fields.put(plain, new FieldData(this, plain, mapped));
}
/**
* Generates the reverse mappings for this class.
* Should always be called only after the given mapper has finished
* processing all classes.
* @param mapper the mapper that generated this data
* @return a ClassData representing the inverted mappings
*/
public ClassData generateReverseMappings(IMapper mapper) {
ClassData reverse = new ClassData(this.nameMapped, this.name);
this.methods.forEach((signature, data) -> reverse.addMethod(nameMapped, signature.name,
MappingUtils.mapMethodDescriptor(signature.descriptor, mapper, false)));
this.fields.forEach((name, data) -> reverse.addField(data.nameMapped, name));
return reverse;
}
/**
* Gets the {@link MethodData} from its name and descriptor, which may be partial
* (i.e. not include the return type).
* @param methodName the method name
* @param methodDescriptor the method descriptor, which may be partial
* @return the requested {@link MethodData}
* @throws MappingNotFoundException if the mapping wasn't found
*/
public MethodData mapMethod(String methodName, String methodDescriptor) {
List<MethodSignature> signatures = this.methods.keySet().stream().filter(
s -> s.name.equals(methodName) && s.descriptor.startsWith(methodDescriptor)
).collect(Collectors.toList());
if(signatures.size() > 1)
throw new RuntimeException(); //should never happen unless something goes horribly wrong
else if(signatures.isEmpty())
throw new MappingNotFoundException("method",
String.format("%s::%s%s", this.name, methodName, methodDescriptor));
return this.methods.get(signatures.get(0));
}
/**
* Gets the {@link FieldData} its name.
* @param fieldName the field name
* @return the requested {@link FieldData}
* @throws MappingNotFoundException if the mapping wasn't found
*/
public FieldData mapField(String fieldName) {
FieldData data = this.fields.get(fieldName);
if(data == null)
throw new MappingNotFoundException("field", String.format("%s.%s", this.name, fieldName));
else return data;
}
}
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