chore: implemented matching by name for finders, added OrphanExceptions to prevent ungraceful crashes in generated code

src/main/java/ftbsc/lll/exceptions/NotAProxyException.java

@@ -1,17 +1,16 @@
 package ftbsc.lll.exceptions;
 
 import ftbsc.lll.processor.annotations.Find;
-import ftbsc.lll.proxies.impl.FieldProxy;
-import ftbsc.lll.proxies.impl.MethodProxy;
 
 /**
  * Thrown when a method is annotated with {@link Find} but does not
- * return a {@link MethodProxy} or a {@link FieldProxy}
+ * return a known instance of {@link ftbsc.lll.proxies.AbstractProxy}.
+ * @since 0.5.0
  */
 public class NotAProxyException extends RuntimeException {
 
 	/**
-	 * Constructs a exception for the specified method.
+	 * Constructs an exception for the specified method.
 	 * @param parent the FQN of the class containing the method
 	 * @param method the name of the method wrongly annotated
 	 */

src/main/java/ftbsc/lll/exceptions/OrphanElementException.java

@@ -0,0 +1,25 @@
+package ftbsc.lll.exceptions;
+
+import javax.lang.model.element.Element;
+import javax.lang.model.element.QualifiedNameable;
+
+/**
+ * Thrown when an annotated element that needs to be paired with
+ * another does not match with any.
+ * @since 0.5.0
+ */
+public class OrphanElementException extends RuntimeException {
+	/**
+	 * Constructs an exception for the specified method.
+	 * @param element the orphan element
+	 */
+	public OrphanElementException(Element element) {
+		super(
+			String.format(
+				"Could not find a valid target for element %s.%s!",
+				((QualifiedNameable) element.getEnclosingElement()).getQualifiedName().toString(),
+				element.getSimpleName().toString()
+			)
+		);
+	}
+}

src/main/java/ftbsc/lll/processor/LilleroProcessor.java

@@ -4,6 +4,7 @@ import com.squareup.javapoet.*;
 import ftbsc.lll.IInjector;
 import ftbsc.lll.exceptions.AmbiguousDefinitionException;
 import ftbsc.lll.exceptions.InvalidResourceException;
+import ftbsc.lll.exceptions.OrphanElementException;
 import ftbsc.lll.processor.annotations.Find;
 import ftbsc.lll.processor.annotations.Injector;
 import ftbsc.lll.processor.annotations.Patch;
@@ -159,7 +160,7 @@ public class LilleroProcessor extends AbstractProcessor {
 				&& processingEnv.getTypeUtils().isSameType(params.get(1), methodNodeType);
 		})) return true;
 		else {
-			processingEnv.getMessager().printMessage(Diagnostic.Kind.WARNING, //TODO orphan targets
+			processingEnv.getMessager().printMessage(Diagnostic.Kind.WARNING,
 				String.format("Missing valid @Injector method in @Patch class %s, skipping.", elem));
 			return false;
 		}
@@ -224,6 +225,10 @@ public class LilleroProcessor extends AbstractProcessor {
 		//this will contain the classes to generate: the key is the class name
 		HashMap<String, InjectorInfo> toGenerate = new HashMap<>();
 
+		//these are needed for orphan checks
+		HashSet<ExecutableElement> matchedInjectors = new HashSet<>();
+		HashSet<VariableElement> matchedMethodFinders = new HashSet<>();
+
 		for(ExecutableElement tg : targets) {
 			Target[] mtgAnn = tg.getAnnotationsByType(Target.class);
 			int iterationNumber = 1;
@@ -248,15 +253,19 @@ public class LilleroProcessor extends AbstractProcessor {
 					finderCandidates = new ArrayList<>(); //no candidates
 					injectorCandidates = new ArrayList<>();
 					injectorCandidates.add(injectors.get(0));
-				} else {  //todo match finders based on same name
-					//case 3: try to match by injectTargetName
-					finderCandidates = new ArrayList<>(); //no candidates
+				} else {
+					//case 3: try to match by injectTargetName or same name for finers
 					String inferredName = "inject" + tg.getSimpleName();
 					injectorCandidates =
 						injectorCandidates
 							.stream()
 							.filter(t -> t.getSimpleName().toString().equalsIgnoreCase(inferredName))
 							.collect(Collectors.toList());
+					finderCandidates =
+						finderCandidates
+							.stream()
+							.filter(t -> t.getSimpleName().contentEquals(tg.getSimpleName()))
+							.collect(Collectors.toList());
 				}
 
 				//throw exception if user is a moron and defined a finder and an injector with the same name
@@ -278,16 +287,20 @@ public class LilleroProcessor extends AbstractProcessor {
 				else {
 					if(injectorCandidates.size() == 1) {
 						//matched an injector!
+						ExecutableElement injector = injectorCandidates.get(0);
+						matchedInjectors.add(injector);
 						toGenerate.put(
 							String.format("%sInjector%d", cl.getSimpleName(), iterationNumber),
-							new InjectorInfo(injectorCandidates.get(0), tg)
+							new InjectorInfo(injector, tg)
 						);
 						iterationNumber++; //increment is only used by injectors
 					} else {
 						//matched a finder!
+						VariableElement finder = finderCandidates.get(0);
+						matchedMethodFinders.add(finder);
 						appendMemberFinderDefinition(
 							targetClass,
-							finderCandidates.get(0),
+							finder,
 							tg,
 							constructorBuilder,
 							this.processingEnv,
@@ -298,6 +311,14 @@ public class LilleroProcessor extends AbstractProcessor {
 			}
 		}
 
+		//find orphans, throw exception if any are found
+		for(ExecutableElement e : injectors)
+			if(!matchedInjectors.contains(e))
+				throw new OrphanElementException(e);
+		for(VariableElement e : methodFinders)
+			if(!matchedMethodFinders.contains(e))
+				throw new OrphanElementException(e);
+
 		//iterate over the map and generate the classes
 		for(String injName : toGenerate.keySet()) {
 			String targetMethodDescriptor = descriptorFromExecutableElement(toGenerate.get(injName).target);

src/main/java/ftbsc/lll/processor/annotations/Injector.java

@@ -1,7 +1,6 @@
 package ftbsc.lll.processor.annotations;
 
 import java.lang.annotation.ElementType;
-import java.lang.annotation.Repeatable;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 

src/main/java/ftbsc/lll/processor/annotations/Patch.java

@@ -1,7 +1,5 @@
 package ftbsc.lll.processor.annotations;
 
-import ftbsc.lll.proxies.impl.TypeProxy;
-
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;

src/main/java/ftbsc/lll/processor/tools/ASTUtils.java

@@ -14,12 +14,7 @@ import ftbsc.lll.proxies.ProxyType;
 import javax.annotation.processing.ProcessingEnvironment;
 import javax.lang.model.element.*;
 import javax.lang.model.type.MirroredTypeException;
-import javax.lang.model.type.MirroredTypesException;
-import javax.lang.model.type.TypeMirror;
-import javax.lang.model.util.Elements;
 import java.lang.annotation.Annotation;
-import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
 import java.util.function.Function;

src/main/java/ftbsc/lll/processor/tools/JavaPoetUtils.java

@@ -19,12 +19,8 @@ import javax.lang.model.element.VariableElement;
 import javax.lang.model.type.TypeKind;
 import javax.lang.model.type.TypeMirror;
 import javax.tools.Diagnostic;
-
 import java.util.Collection;
 import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
-import java.util.stream.Collectors;
 
 import static ftbsc.lll.processor.tools.ASTUtils.*;