added: docs to AnnotationValidator

Ghidra/Debug/AnnotationValidator/src/main/java/ghidra/util/database/annotproc/AbstractDBAnnotationValidator.java

@@ -20,13 +20,31 @@ import java.lang.annotation.Annotation;
 import javax.lang.model.element.*;
 import javax.tools.Diagnostic.Kind;
 
+/**
+ * An abstract class for validating annotations on {@link DBAnnotatedObject}.
+ * <p>
+ * 	Performs validation checks on annotated fields and their enclosing types.
+ * </p>
+ */
 public class AbstractDBAnnotationValidator {
 	protected final ValidationContext ctx;
 
+	/**
+	 * Construct a new {@code AbstractDBAnnotationValidator} with the specified validation context.
+	 * 
+	 * @param ctx the validation context
+	 */
 	public AbstractDBAnnotationValidator(ValidationContext ctx) {
 		this.ctx = ctx;
 	}
 
+	/**
+	 * Check the enclosing type of the annotated field.
+	 * 
+	 * @param annotType the type of the annotation being validated
+	 * @param field the field being validated
+	 * @param type the enclosing type of the field
+	 */
 	protected void checkEnclosingType(Class<? extends Annotation> annotType, VariableElement field,
 			TypeElement type) {
 		if (type.getKind() != ElementKind.CLASS) {

Ghidra/Debug/AnnotationValidator/src/main/java/ghidra/util/database/annotproc/AccessSpec.java

@@ -19,6 +19,10 @@ import java.util.Set;
 
 import javax.lang.model.element.Modifier;
 
+/**
+ * An enum to represent different levels of access specifiers
+ * (private, package-private, protected, public) with corresponding access levels
+ */
 public enum AccessSpec {
 	PRIVATE(0), PACKAGE(1), PROTECTED(2), PUBLIC(3);
 
@@ -29,7 +33,7 @@ public enum AccessSpec {
 	}
 
 	/**
-	 * Checks if the second permits the same or more access than the first
+	 * Check if the second permits the same or more access than the first
 	 * 
 	 * @param first the first
 	 * @param second the second

Ghidra/Debug/AnnotationValidator/src/main/java/ghidra/util/database/annotproc/DBAnnotatedColumnValidator.java

@@ -22,14 +22,40 @@ import javax.tools.Diagnostic.Kind;
 
 import ghidra.util.database.annot.DBAnnotatedColumn;
 
+/**
+ * A class for validating fields annotated with {@link DBAnnotatedColumn}
+ * <p>
+ * 	To ensure fields annotated with {@link DBAnnotatedColumn}
+ *  comply with the expected criteria for database columns in Ghidra.
+ * </p>
+ */
+
 public class DBAnnotatedColumnValidator extends AbstractDBAnnotationValidator {
 	final VariableElement column;
 
+	/**
+	 * Construct a new {@code DBAnnotatedColumnValidator} with the specified validation context and the column element.
+	 * @param ctx
+	 * @param column
+	 */
 	public DBAnnotatedColumnValidator(ValidationContext ctx, VariableElement column) {
 		super(ctx);
 		this.column = column;
 	}
 
+	/**
+	 * Validate the annotated column field.
+	 * 
+	 * <p>
+	 * 	It performs the following checks to ensure it meets the requirements for database columns:
+	 * 	<ul>
+	 * 	<li>The field must be of the type specified by {@code ctx.DB_OBJECT_COLUMN_ELEM}.</li>
+	 * 	<li>The field must not be declared as {@code final}.</li>
+	 * 	<li>The field must be declared as {@code static}.</li>
+	 * 	<li>The enclosing type of the field must meet the criteria defined in {@code checkEnclosingType}.</li>
+	 * 	</ul>
+	 * </p>
+	 */
 	public void validate() {
 		if (!ctx.hasType(column, ctx.DB_OBJECT_COLUMN_ELEM)) {
 			ctx.messager.printMessage(Kind.ERROR,

Ghidra/Debug/AnnotationValidator/src/main/java/ghidra/util/database/annotproc/DBAnnotatedFieldValidator.java

@@ -23,6 +23,14 @@ import javax.tools.Diagnostic.Kind;
 
 import ghidra.util.database.annot.DBAnnotatedField;
 
+/**
+ * A class for validating fields annotated with {@link DBAnnotatedField}
+ * <p>
+ * 	To ensure fields annotated with {@link DBAnnotatedField} meet the criteria required for database fields
+ * 	in Ghidra. It extends the {@code AbstractDBAnnotationValidator} to provide additional
+ * 	validation logic specific to database field annotations.
+ * </p>
+ */
 public class DBAnnotatedFieldValidator extends AbstractDBAnnotationValidator {
 	final VariableElement field;
 	final Map<TypeMirror, TypeElement> javaToDBTypeMap;
@@ -39,6 +47,11 @@ public class DBAnnotatedFieldValidator extends AbstractDBAnnotationValidator {
 
 	final TypeElement ENUM_CODEC_ELEM;
 
+	/**
+	 * Construct a new {@code DBAnnotatedFieldValidator} with the specified validation context and field element.
+	 * @param ctx
+	 * @param field
+	 */
 	public DBAnnotatedFieldValidator(ValidationContext ctx, VariableElement field) {
 		super(ctx);
 		this.field = field;
@@ -59,6 +72,13 @@ public class DBAnnotatedFieldValidator extends AbstractDBAnnotationValidator {
 		ENUM_CODEC_ELEM = ctx.elementUtils.getTypeElement(ENUM_CODEC_NAME);
 	}
 
+	/**
+	 * Associate a primitive type and its boxed type with the specified codec type in the map.
+	 * 
+	 * @param map the map linking java types to their corresponding codec types
+	 * @param kind the primitive type kind
+	 * @param codecName the fully qualified name of the codec type
+	 */
 	protected void putPrimitiveTypeCodec(Map<TypeMirror, TypeElement> map, TypeKind kind,
 			String codecName) {
 		PrimitiveType primitive = ctx.typeUtils.getPrimitiveType(kind);
@@ -68,12 +88,26 @@ public class DBAnnotatedFieldValidator extends AbstractDBAnnotationValidator {
 		map.put(boxed, codec);
 	}
 
+	/**
+	 * Associate a specified class type with the specified codec type in the map.
+	 * 
+	 * @param map the map linking Java types to their corresponding codec types
+	 * @param cls the class type
+	 * @param codecName the fully qualified name of the codec type
+	 */
 	protected void putTypeCodec(Map<TypeMirror, TypeElement> map, Class<?> cls, String codecName) {
 		TypeMirror type = ctx.elementUtils.getTypeElement(cls.getCanonicalName()).asType();
 		TypeElement codec = ctx.elementUtils.getTypeElement(codecName);
 		map.put(type, codec);
 	}
 
+	/**
+	 * Associate a primitive array type with the specified codec type inthe map.
+	 * 
+	 * @param map the map linking Java types to their corresponding codec types
+	 * @param kind the primitive type kind
+	 * @param codecName the fully qualified name of the codec type
+	 */
 	protected void putPrimitiveArrayTypeCodec(Map<TypeMirror, TypeElement> map, TypeKind kind,
 			String codecName) {
 		PrimitiveType primitive = ctx.typeUtils.getPrimitiveType(kind);
@@ -82,6 +116,18 @@ public class DBAnnotatedFieldValidator extends AbstractDBAnnotationValidator {
 		map.put(array, codec);
 	}
 
+	/**
+	 * Validate the annotated field to ensure it meets the requirements for database fields.
+	 * <p>
+	 * 	It performs the following checks:
+	 * 	<ul>
+	 * 	<li>The field must not be declared as {@code final}.</li>
+	 *	<li>The field must not be declared as {@code static}.</li>
+	 *	<li>The enclosing type of the field must meet the criteria defined in {@code checkEnclosingType}.</li>
+	 *	<li>The codec types for the field must be appropriate.</li>
+	 * 	</ul>
+	 * </p>
+	 */
 	public void validate() {
 		Set<Modifier> mods = field.getModifiers();
 		if (mods.contains(Modifier.FINAL)) {
@@ -101,6 +147,12 @@ public class DBAnnotatedFieldValidator extends AbstractDBAnnotationValidator {
 		checkCodecTypes(type);
 	}
 
+	/**
+	 * Return the default codec type element for the specified Java type.
+	 * 
+	 * @param javaType the Java type for which the default codec is needed
+	 * @return the default codec type element, or {@code null} if no default codec is found
+	 */
 	protected TypeElement getDefaultCodecType(TypeMirror javaType) {
 		if (ctx.isEnumType(javaType)) {
 			return ENUM_CODEC_ELEM;
@@ -108,6 +160,12 @@ public class DBAnnotatedFieldValidator extends AbstractDBAnnotationValidator {
 		return javaToDBTypeMap.get(javaType);
 	}
 
+	/**
+	 * Return the codec type element specified in the {@link DBAnnotatedField} annotation
+	 * for the field, or the default codec type if none is specified.
+	 * 
+	 * @return the codec type element for the field
+	 */
 	protected TypeElement getCodecTypeElement() {
 		DBAnnotatedField annotation = field.getAnnotation(DBAnnotatedField.class);
 		TypeElement codecElem;
@@ -123,6 +181,11 @@ public class DBAnnotatedFieldValidator extends AbstractDBAnnotationValidator {
 		return codecElem;
 	}
 
+	/**
+	 * Check the codec types associated with the field to ensure they meet the necessary requirements.
+	 * 
+	 * @param objectType the type of the enclosing object
+	 */
 	protected void checkCodecTypes(TypeElement objectType) {
 
 		TypeElement codecType = getCodecTypeElement();

Ghidra/Debug/AnnotationValidator/src/main/java/ghidra/util/database/annotproc/DBAnnotatedObjectProcessor.java

@@ -29,8 +29,12 @@ import ghidra.util.database.annot.*;
 /**
  * A compile-time annotation processor for {@link DBAnnotatedObject}-related annotations.
  * 
+ * <p>
+ * 	This processor performs compile-time validation checks on annotations related to 
+ * 	{@link DBAnnotatedObject}.
  * 	Currently just performs compile-time checks. It does not generate any code, but perhaps one day,
  * 	it will.
+ * </p>
  */
 //@AutoService(Processor.class) // TODO: Evaluate Google's auto-service as a dependency
 public class DBAnnotatedObjectProcessor extends AbstractProcessor {
@@ -39,6 +43,11 @@ public class DBAnnotatedObjectProcessor extends AbstractProcessor {
 
 	private ValidationContext ctx;
 
+	/**
+	 * Initialize the processor with the given preprocessing environment.
+	 * 
+	 * @param env the processing environment
+	 */
 	@Override
 	public synchronized void init(ProcessingEnvironment env) {
 		//System.err.println("HERE4");
@@ -46,6 +55,13 @@ public class DBAnnotatedObjectProcessor extends AbstractProcessor {
 		ctx = new ValidationContext(env);
 	}
 
+	/**
+	 * Process the specified annotations for the current round of processing..
+	 * 
+	 * @param annotations the set of annotations to process
+	 * @param roundEnv the environment for information about the current and prior round
+	 * @return {@code true} if the annotations are claimed by this processor, {@code false} otherwise
+	 */
 	@Override
 	public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
 		Map<TypeElement, DBAnnotatedObjectValidator> types = new LinkedHashMap<>();
@@ -76,6 +92,15 @@ public class DBAnnotatedObjectProcessor extends AbstractProcessor {
 		return true;
 	}
 
+	/**
+	 * Provide completion suggestion for the specified element, annotation, and member.
+	 * 
+	 * @param element the element being annotated
+	 * @param annotation the annotation being processed
+	 * @param member the annotation member being completed
+	 * @param userText the text entered by the user
+	 * @return an iterable of completions.
+	 */
 	@Override
 	public Iterable<? extends Completion> getCompletions(Element element,
 			AnnotationMirror annotation, ExecutableElement member, String userText) {
@@ -83,11 +108,21 @@ public class DBAnnotatedObjectProcessor extends AbstractProcessor {
 		return super.getCompletions(element, annotation, member, userText);
 	}
 
+	/**
+	 * Return the latest supported source version.
+	 *
+	 * @return the latest supported source version
+	 */
 	@Override
 	public SourceVersion getSupportedSourceVersion() {
 		return SourceVersion.latestSupported();
 	}
 
+	/**
+	 * Return the set of supported annotation types.
+	 *
+	 * @return the set of supported annotation types
+	 */
 	@Override
 	public Set<String> getSupportedAnnotationTypes() {
 		return SUPPORTED_ANNOTATIONS.stream().map(Class::getCanonicalName).collect(

Ghidra/Debug/AnnotationValidator/src/main/java/ghidra/util/database/annotproc/DBAnnotatedObjectValidator.java

@@ -22,29 +22,57 @@ import javax.tools.Diagnostic.Kind;
 
 import ghidra.util.database.annot.*;
 
+/**
+ * Validate {@link DBAnnotatedObject}-related annotations on a given type element.
+ * <p>
+ * 	This class ensures that annotations such as {@link DBAnnotatedField}, {@link DBAnnotatedColumn},
+ * 	and {@link DBAnnotatedObjectInfo} are applied correctly and consistently on the fields and columns
+ * 	of a class.
+ * </p>
+ */
 public class DBAnnotatedObjectValidator {
 	private final ValidationContext ctx;
 	private final TypeElement type;
 	private final Map<String, DBAnnotatedFieldValidator> fieldsByName = new LinkedHashMap<>();
 	private final Map<String, DBAnnotatedColumnValidator> columnsByName = new LinkedHashMap<>();
 
+	/**
+	 * Construct a new validator for the given type element within the specified validation context
+	 * 
+	 * @param ctx the validation context
+	 * @param type the type element to be validated
+	 */
 	public DBAnnotatedObjectValidator(ValidationContext ctx, TypeElement type) {
 		this.ctx = ctx;
 		this.type = type;
 	}
 
+	/**
+	 * Add a field annotated with {@link DBAnnotatedField} to be validator.
+	 * 
+	 * @param field the field element annotated with {@link DBAnnotatedField}
+	 */
 	public void addAnnotatedField(VariableElement field) {
 		DBAnnotatedField annotation = field.getAnnotation(DBAnnotatedField.class);
 		assert annotation != null;
 		fieldsByName.put(annotation.column(), new DBAnnotatedFieldValidator(ctx, field));
 	}
 
+	/**
+	 * Add a column annotated with {@link DBAnnotatedColumn} to the validator.
+	 * 
+	 * @param column the field element annotated with {@link DBAnnotatedColumn}
+	 */
 	public void addAnnotatedColumn(VariableElement column) {
 		DBAnnotatedColumn annotation = column.getAnnotation(DBAnnotatedColumn.class);
 		assert annotation != null;
 		columnsByName.put(annotation.value(), new DBAnnotatedColumnValidator(ctx, column));
 	}
 
+	/**
+	 * Validate the annotated fields, columns, and the type element itself.
+	 * Checks for various annotation constraints and consistency rules.
+	 */
 	public void validate() {
 		DBAnnotatedObjectInfo annotation = type.getAnnotation(DBAnnotatedObjectInfo.class);
 		if (annotation != null && type.getKind() != ElementKind.CLASS) {
@@ -81,18 +109,27 @@ public class DBAnnotatedObjectValidator {
 		checkMissing();
 	}
 
+	/**
+	 * Validate all fields annotated with {@link DBAnnotatedField}.
+	 */
 	protected void validateFields() {
 		for (DBAnnotatedFieldValidator fv : fieldsByName.values()) {
 			fv.validate();
 		}
 	}
 
+	/**
+	 * Validate all columns annotated with {@link DBAnnotatedColumn}.
+	 */
 	protected void validateColumns() {
 		for (DBAnnotatedColumnValidator cv : columnsByName.values()) {
 			cv.validate();
 		}
 	}
 
+	/**
+	 * Check for missing corresponding annotations between fields and columns.
+	 */
 	protected void checkMissing() {
 		Set<String> names = new LinkedHashSet<>();
 		names.addAll(fieldsByName.keySet());
@@ -121,6 +158,12 @@ public class DBAnnotatedObjectValidator {
 
 	}
 
+	/**
+	 * Check that the access specifiers of the field and column are compatible.
+	 * @param field the field element
+	 * @param column the column element
+	 * @param name the name of the column
+	 */
 	protected void checkAccess(VariableElement field, VariableElement column, String name) {
 		AccessSpec fieldSpec = AccessSpec.get(field.getModifiers());
 		AccessSpec columnSpec = AccessSpec.get(column.getModifiers());

Ghidra/Debug/AnnotationValidator/src/main/java/ghidra/util/database/annotproc/ValidationContext.java

@@ -38,6 +38,11 @@ public class ValidationContext {
 	final TypeElement DEFAULT_CODEC_ELEM;
 	final TypeElement ENUM_ELEM;
 
+	/**
+	 * Construct a Validation Context with the specified processing environment/
+	 *
+	 * @param env the processing environment
+	 */
 	public ValidationContext(ProcessingEnvironment env) {
 		typeUtils = env.getTypeUtils();
 		elementUtils = env.getElementUtils();
@@ -54,14 +59,35 @@ public class ValidationContext {
 		ENUM_ELEM = elementUtils.getTypeElement(Enum.class.getCanonicalName());
 	}
 
+	/**
+	 * Check if t1 is a subclass of t2.
+	 * 
+	 * @param t1 the potential subclass
+	 * @param t2 the potential superclass
+	 * @return true if t1 is a subclass of t2, false otherwise
+	 */
 	public boolean isSubclass(TypeElement t1, TypeElement t2) {
 		return typeUtils.isSubtype(typeUtils.erasure(t1.asType()), typeUtils.erasure(t2.asType()));
 	}
 
+	/**
+	 * Check if the field has the specified type.
+	 * 
+	 * @param field the field element
+	 * @param type  the type element
+	 * @return true if the field has the specified type, false otherwise
+	 */
 	public boolean hasType(VariableElement field, TypeElement type) {
 		return hasType(field, type.asType());
 	}
 
+	/**
+	 * Check if the field has the specified type.
+	 * 
+	 * @param field the field element
+	 * @param type  the type mirror
+	 * @return true if the field has the specified type, false otherwise
+	 */
 	public boolean hasType(VariableElement field, TypeMirror type) {
 		TypeMirror fieldType = field.asType();
 		try {
@@ -86,9 +112,16 @@ public class ValidationContext {
 		}
 
 		return typeUtils.isAssignable(fieldType, type);
-//		return typeUtils.isSameType(fieldType, type);
+		// return typeUtils.isSameType(fieldType, type);
 	}
 
+	/**
+	 * Check if t1 is capturable by t2.
+	 * 
+	 * @param t1 is the type to check
+	 * @param t2 the capture target type
+	 * @return true if t1 is capturable by t2, false otherwise
+	 */
 	public boolean isCapturable(TypeMirror t1, TypeMirror t2) {
 		// TODO: This only works for typevar at top level...
 		// TODO: Need to figure out how to check for capture and check
@@ -105,6 +138,12 @@ public class ValidationContext {
 		return typeUtils.isSubtype(t1, t2);
 	}
 
+	/**
+	 * Check if the type is an enum type.
+	 * 
+	 * @param t the type mirror to check
+	 * @return true if the type is an enum type, false otherwise
+	 */
 	public boolean isEnumType(TypeMirror t) {
 		if (t.getKind() != TypeKind.DECLARED) {
 			return false;
@@ -113,6 +152,14 @@ public class ValidationContext {
 		return typeUtils.isSubtype(t, enumType);
 	}
 
+	/**
+	 * Find the supertype of a set of declared types that matches the specified
+	 * super type.
+	 * 
+	 * @param types     the set of declared types
+	 * @param superType the super type element to match
+	 * @return the matching declared type, or null if no match is found
+	 */
 	protected DeclaredType findSupertype(Set<DeclaredType> types, TypeElement superType) {
 		Set<DeclaredType> next;
 		while (!types.isEmpty()) {
@@ -132,14 +179,37 @@ public class ValidationContext {
 		return null;
 	}
 
+	/**
+	 * Find the supertype of a declared type that matches the specified super type
+	 * element.
+	 * 
+	 * @param type      the declared type
+	 * @param superElem the super type element to match
+	 * @return the matching declared type, or null if no match is found
+	 */
 	public DeclaredType findSupertype(DeclaredType type, TypeElement superElem) {
 		return findSupertype(Set.of(type), superElem);
 	}
 
+	/**
+	 * Find the supertype of a type element that matches the specified super type
+	 * element.
+	 * 
+	 * @param elem      the type element
+	 * @param superElem the super type element to match
+	 * @return the matching declared type, or null if no match is found
+	 */
 	public DeclaredType findSupertype(TypeElement elem, TypeElement superElem) {
 		return findSupertype((DeclaredType) elem.asType(), superElem);
 	}
 
+	/**
+	 * Convert the type arguments of the super type element to a map.
+	 * 
+	 * @param superElem the super type element
+	 * @param superType the declared super type
+	 * @return a map of type argument names to their corresponding type mirrors
+	 */
 	protected Map<String, TypeMirror> toArgsMap(TypeElement superElem, DeclaredType superType) {
 		List<? extends TypeParameterElement> typeParameters = superElem.getTypeParameters();
 		List<? extends TypeMirror> typeArguments = superType.getTypeArguments();
@@ -151,14 +221,34 @@ public class ValidationContext {
 		return result;
 	}
 
+	/**
+	 * Get the type arguments of a declared type as a map.
+	 * 
+	 * @param type      the declared type
+	 * @param superElem the super type element
+	 * @return a map of type argument names to their corresponding type mirrors
+	 */
 	public Map<String, TypeMirror> getArguments(DeclaredType type, TypeElement superElem) {
 		return toArgsMap(superElem, findSupertype(type, superElem));
 	}
 
+	/**
+	 * Get the type arguments of a type element as a map.
+	 * 
+	 * @param elem      the type element
+	 * @param superElem the super type element
+	 * @return a map of type argument names to their corresponding type mirrors
+	 */
 	public Map<String, TypeMirror> getArguments(TypeElement elem, TypeElement superElem) {
 		return toArgsMap(superElem, findSupertype(elem, superElem));
 	}
 
+	/**
+	 * Format the given type mirror as a string.
+	 * 
+	 * @param type the type mirror to format
+	 * @return the formatted type mirror as a string
+	 */
 	public String format(TypeMirror type) {
 		FormatVisitor vis = new FormatVisitor();
 		type.accept(vis, null);
@@ -166,9 +256,20 @@ public class ValidationContext {
 	}
 }
 
+/**
+ * Class for formatting {@link TypeMirror} instances into a readable string
+ */
 class FormatVisitor implements TypeVisitor<Void, Void> {
 	StringBuffer buf = new StringBuffer();
 
+	/**
+	 * Visit method for {@link TypeMirror}. Delegates to specific visit methods
+	 * based on the type kind.
+	 * 
+	 * @param t the type mirror to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visit(TypeMirror t, Void p) {
 		switch (t.getKind()) {
@@ -207,18 +308,39 @@ class FormatVisitor implements TypeVisitor<Void, Void> {
 		}
 	}
 
+	/**
+	 * Visit method for {@link PrimitiveType}.
+	 * 
+	 * @param t the primitive type to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitPrimitive(PrimitiveType t, Void p) {
 		buf.append(t.toString());
 		return null;
 	}
 
+	/**
+	 * Visit method for {@link NullType}.
+	 * 
+	 * @param t the null type to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitNull(NullType t, Void p) {
 		buf.append(t.toString());
 		return null;
 	}
 
+	/**
+	 * Visit method for {@link ArrayType}.
+	 * 
+	 * @param t the array type to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitArray(ArrayType t, Void p) {
 		visit(t.getComponentType());
@@ -226,6 +348,13 @@ class FormatVisitor implements TypeVisitor<Void, Void> {
 		return null;
 	}
 
+	/**
+	 * Visit method for {@link DeclaredType}.
+	 * 
+	 * @param t the declared type to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitDeclared(DeclaredType t, Void p) {
 		buf.append(t.asElement().toString());
@@ -242,12 +371,26 @@ class FormatVisitor implements TypeVisitor<Void, Void> {
 		return null;
 	}
 
+	/**
+	 * Visit method for {@link ErrorType}.
+	 * 
+	 * @param t the error type to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitError(ErrorType t, Void p) {
 		buf.append(t.toString());
 		return null;
 	}
 
+	/**
+	 * Visit method for {@link TypeVariable}.
+	 * 
+	 * @param t the type variable to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitTypeVariable(TypeVariable t, Void p) {
 		buf.append(t.toString());
@@ -264,6 +407,13 @@ class FormatVisitor implements TypeVisitor<Void, Void> {
 		return null;
 	}
 
+	/**
+	 * Visit method for {@link WindcardType}.
+	 * 
+	 * @param t the wildcard type to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitWildcard(WildcardType t, Void p) {
 		buf.append("?");
@@ -280,24 +430,52 @@ class FormatVisitor implements TypeVisitor<Void, Void> {
 		return null;
 	}
 
+	/**
+	 * Visit method for {@link ExecutableType}.
+	 * 
+	 * @param t the executable type to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitExecutable(ExecutableType t, Void p) {
 		buf.append(t.toString());
 		return null;
 	}
 
+	/**
+	 * Visit method for {@link NoType}.
+	 * 
+	 * @param t the no-type to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitNoType(NoType t, Void p) {
 		buf.append(t.toString());
 		return null;
 	}
 
+	/**
+	 * Visit method for unknown {@link TypeMirror} instances.
+	 * 
+	 * @param t the unknown type to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitUnknown(TypeMirror t, Void p) {
 		buf.append(t.toString());
 		return null;
 	}
 
+	/**
+	 * Visit method for {@link UnionType}.
+	 * 
+	 * @param t the union type to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitUnion(UnionType t, Void p) {
 		Iterator<? extends TypeMirror> it = t.getAlternatives().iterator();
@@ -311,6 +489,13 @@ class FormatVisitor implements TypeVisitor<Void, Void> {
 		return null;
 	}
 
+	/**
+	 * Visit method for {@link IntersectionType}.
+	 * 
+	 * @param t the intersection type to visit
+	 * @param p unused parameter (can be {@code null})
+	 * @return {@code null}
+	 */
 	@Override
 	public Void visitIntersection(IntersectionType t, Void p) {
 		Iterator<? extends TypeMirror> it = t.getBounds().iterator();