Advanced Features

/**
 * Base class for creating custom libraries
 */
public abstract class Library extends Node {
    
    /**
     * Check if library accepts receiver type
     * @param receiver Object to check
     * @return true if accepts
     */
    public boolean accepts(Object receiver) {
        return true;
    }
    
    /**
     * Get library priority for receiver
     * @param receiver Object to check
     * @return Priority value (higher = preferred)
     */
    public int getPriority() {
        return 0;
    }
}

/**
 * Factory for creating library instances
 * @param <T> Library type
 */
public abstract class LibraryFactory<T extends Library> {
    
    /**
     * Get factory for library class
     * @param libraryClass Library class
     * @return LibraryFactory instance
     */
    public static <T extends Library> LibraryFactory<T> resolve(Class<T> libraryClass) {
        return null; // Implementation details
    }
    
    /**
     * Get uncached library instance
     * @return Uncached library
     */
    public abstract T getUncached();
    
    /**
     * Get uncached library for specific receiver
     * @param receiver Target receiver
     * @return Uncached library
     */
    public abstract T getUncached(Object receiver);
    
    /**
     * Create cached library
     * @param receiver Target receiver
     * @return Cached library
     */
    public abstract T create(Object receiver);
    
    /**
     * Create dispatched library
     * @param limit Cache limit
     * @return Dispatched library
     */
    public abstract T createDispatched(int limit);
    
    /**
     * Get dispatch class
     * @return Library dispatch class
     */
    public abstract Class<?> getDispatchClass();
}

/**
 * Annotation for generating library classes
 */
@Retention(RetentionPolicy.CLASS)
@Target(ElementType.TYPE)
public @interface GenerateLibrary {
    
    /**
     * Default export receiver type
     * @return Receiver class
     */
    Class<?> defaultExportLookupEnabled() default Object.class;
    
    /**
     * Whether to generate assert messages
     * @return true to generate
     */
    boolean assertions() default true;
    
    /**
     * Push encapsulating node to library calls
     * @return true to push
     */
    boolean pushEncapsulatingNode() default true;
}

/**
 * Message representation for library operations
 */
public abstract class Message {
    
    /**
     * Get message name
     * @return Simple message name
     */
    public abstract String getSimpleName();
    
    /**
     * Get qualified message name
     * @return Qualified message name
     */
    public abstract String getQualifiedName();
    
    /**
     * Get library class
     * @return Library class containing message
     */
    public abstract Class<? extends Library> getLibraryClass();
}

/**
 * Default export provider interface
 */
public interface DefaultExportProvider {
    
    /**
     * Get default export class
     * @return Export class
     */
    Class<?> getExportClass();
    
    /**
     * Get export priority
     * @return Priority value
     */
    int getPriority();
    
    /**
     * Create export instance
     * @return Export instance
     */
    Object createExport();
}

/**
 * Eager export provider for immediate initialization
 */
public interface EagerExportProvider extends DefaultExportProvider {
    
    /**
     * Get eager export list
     * @return List of export classes
     */
    List<Class<?>> getEagerExports();
}

/**
 * Library that provides reflection capabilities
 */
public abstract class ReflectionLibrary extends Library {
    
    /**
     * Get uncached reflection library
     * @return Uncached library
     */
    public static ReflectionLibrary getUncached() {
        return null; // Implementation details
    }
    
    /**
     * Send message to object
     * @param receiver Target object
     * @param message Message to send
     * @param arguments Message arguments
     * @return Message result
     * @throws Exception if message fails
     */
    public abstract Object send(Object receiver, Message message, Object... arguments) throws Exception;
    
    /**
     * Check if object has message
     * @param receiver Target object
     * @param message Message to check
     * @return true if has message
     */
    public abstract boolean accepts(Object receiver, Message message);
}

/**
 * Library for dynamic dispatch based on receiver type
 */
public abstract class DynamicDispatchLibrary extends Library {
    
    /**
     * Get uncached dynamic dispatch library
     * @return Uncached library
     */
    public static DynamicDispatchLibrary getUncached() {
        return null; // Implementation details
    }
    
    /**
     * Dispatch call based on receiver type
     * @param receiver Call receiver
     * @param name Method name
     * @param arguments Call arguments
     * @return Call result
     * @throws Exception if dispatch fails
     */
    public abstract Object dispatch(Object receiver, String name, Object... arguments) throws Exception;
    
    /**
     * Get dispatch target class
     * @param receiver Dispatch receiver
     * @return Target class for dispatch
     */
    public Class<?> dispatch(Object receiver) {
        return receiver.getClass();
    }
}

@GenerateLibrary
public abstract class MathLibrary extends Library {
    
    /**
     * Add two numbers
     * @param receiver Left operand
     * @param other Right operand
     * @return Addition result
     */
    public Object add(Object receiver, Object other) {
        // Default implementation
        throw new UnsupportedOperationException("add not supported");
    }
    
    /**
     * Multiply two numbers
     * @param receiver Left operand
     * @param other Right operand
     * @return Multiplication result
     */
    public Object multiply(Object receiver, Object other) {
        // Default implementation  
        throw new UnsupportedOperationException("multiply not supported");
    }
}

@ExportLibrary(MathLibrary.class)
public class MyNumber implements TruffleObject {
    private final double value;
    
    public MyNumber(double value) {
        this.value = value;
    }
    
    @ExportMessage
    Object add(Object other) {
        if (other instanceof MyNumber) {
            return new MyNumber(this.value + ((MyNumber) other).value);
        }
        throw new UnsupportedOperationException();
    }
    
    @ExportMessage
    Object multiply(Object other) {
        if (other instanceof MyNumber) {
            return new MyNumber(this.value * ((MyNumber) other).value);
        }
        throw new UnsupportedOperationException();
    }
}

/**
 * Static object shape defining compile-time layout
 * @param <T> Object type
 */
public abstract class StaticShape<T> {
    
    /**
     * Get property by name
     * @param propertyName Property name
     * @return StaticProperty instance or null
     */
    public abstract StaticProperty getProperty(Object propertyName);
    
    /**
     * Create new instance with this shape
     * @return New object instance
     */
    public abstract T newInstance();
    
    /**
     * Get language associated with shape
     * @return TruffleLanguage instance
     */
    public abstract TruffleLanguage<?> getLanguage();
    
    /**
     * Create shape builder
     * @param language Target language
     * @return Builder instance
     */
    public static <T> Builder<T> newBuilder(TruffleLanguage<?> language) {
        return null; // Implementation details
    }
    
    /**
     * Builder for creating static shapes
     * @param <T> Object type
     */
    public static final class Builder<T> {
        
        /**
         * Add property to shape
         * @param property Property to add
         * @param type Property type
         * @param isFinal Whether property is final
         * @return Builder instance
         */
        public Builder<T> property(StaticProperty property, Class<?> type, boolean isFinal) {
            return this;
        }
        
        /**
         * Add property with name and type
         * @param name Property name
         * @param type Property type
         * @return Builder instance
         */
        public Builder<T> property(String name, Class<?> type) {
            return property(StaticProperty.create(name), type, false);
        }
        
        /**
         * Add final property
         * @param name Property name
         * @param type Property type
         * @return Builder instance
         */
        public Builder<T> finalProperty(String name, Class<?> type) {
            return property(StaticProperty.create(name), type, true);
        }
        
        /**
         * Build static shape
         * @return StaticShape instance
         */
        public StaticShape<T> build() {
            return null; // Implementation details
        }
        
        /**
         * Build with factory
         * @param factory Object factory
         * @return StaticShape instance
         */
        public StaticShape<T> build(Class<T> factory) {
            return null; // Implementation details
        }
    }
}

/**
 * Property descriptor for static objects
 */
public interface StaticProperty {
    
    /**
     * Create property with name
     * @param name Property name
     * @return StaticProperty instance
     */
    static StaticProperty create(String name) {
        return null; // Implementation details
    }
    
    /**
     * Get property name
     * @return Property name
     */
    String getName();
    
    /**
     * Get property ID for access
     * @return Property identifier
     */
    String getId();
}

/**
 * Shape generator for array-based storage
 */
public abstract class ArrayBasedShapeGenerator<T> extends ShapeGenerator<T> {
    
    /**
     * Create array-based generator
     * @param language Target language
     * @return Generator instance
     */
    public static <T> ArrayBasedShapeGenerator<T> create(TruffleLanguage<?> language) {
        return null; // Implementation details
    }
}

/**
 * Shape generator for field-based storage
 */
public abstract class FieldBasedShapeGenerator<T> extends ShapeGenerator<T> {
    
    /**
     * Create field-based generator
     * @param language Target language
     * @return Generator instance
     */
    public static <T> FieldBasedShapeGenerator<T> create(TruffleLanguage<?> language) {
        return null; // Implementation details
    }
}

/**
 * Base shape generator class
 * @param <T> Object type
 */
public abstract class ShapeGenerator<T> {
    
    /**
     * Generate static shape
     * @param properties Property definitions
     * @return StaticShape instance
     */
    public abstract StaticShape<T> generateShape(StaticProperty... properties);
    
    /**
     * Generate shape with factory
     * @param factory Object factory class
     * @param properties Property definitions
     * @return StaticShape instance
     */
    public abstract StaticShape<T> generateShape(Class<T> factory, StaticProperty... properties);
}

/**
 * Assumed value with invalidation support
 * @param <T> Value type
 */
public final class AssumedValue<T> {
    
    /**
     * Create assumed value
     * @param name Assumption name
     * @param initialValue Initial value
     */
    public AssumedValue(String name, T initialValue) {
        // Implementation details
    }
    
    /**
     * Create assumed value with name
     * @param name Assumption name
     * @return AssumedValue instance
     */
    public static <T> AssumedValue<T> create(String name) {
        return new AssumedValue<>(name, null);
    }
    
    /**
     * Get current value (optimized)
     * @return Current value
     */
    public T get() {
        return null; // Implementation details
    }
    
    /**
     * Get current value with assumption check
     * @param assumption Assumption to validate
     * @return Current value
     */
    public T get(Assumption assumption) {
        return null; // Implementation details
    }
    
    /**
     * Set new value (invalidates assumption)
     * @param newValue New value
     */
    public void set(T newValue) {
        // Implementation details
    }
    
    /**
     * Get underlying assumption
     * @return Assumption instance
     */
    public Assumption getAssumption() {
        return null; // Implementation details
    }
}

/**
 * Cyclic assumption management
 */
public final class CyclicAssumption {
    
    /**
     * Create cyclic assumption
     * @param name Assumption name
     */
    public CyclicAssumption(String name) {
        // Implementation details
    }
    
    /**
     * Get current assumption
     * @return Current Assumption
     */
    public Assumption getAssumption() {
        return null; // Implementation details
    }
    
    /**
     * Invalidate current assumption and create new one
     */
    public void invalidate() {
        // Implementation details
    }
    
    /**
     * Invalidate with message
     * @param message Invalidation message
     */
    public void invalidate(String message) {
        // Implementation details
    }
}

/**
 * Context-local storage
 * @param <T> Stored value type
 */
public final class ContextLocal<T> {
    
    /**
     * Get value for current context
     * @return Context-local value
     */
    public T get() {
        return null; // Implementation details
    }
    
    /**
     * Get value for specific context
     * @param context Target context
     * @return Context-local value
     */
    public T get(TruffleContext context) {
        return null; // Implementation details
    }
    
    /**
     * Set value for current context
     * @param value New value
     */
    public void set(T value) {
        // Implementation details
    }
    
    /**
     * Set value for specific context
     * @param context Target context
     * @param value New value
     */
    public void set(TruffleContext context, T value) {
        // Implementation details
    }
}

/**
 * Context-thread-local storage
 * @param <T> Stored value type
 */
public final class ContextThreadLocal<T> {
    
    /**
     * Get value for current context and thread
     * @return Context-thread-local value
     */
    public T get() {
        return null; // Implementation details
    }
    
    /**
     * Get value for specific context and current thread
     * @param context Target context
     * @return Context-thread-local value
     */
    public T get(TruffleContext context) {
        return null; // Implementation details
    }
    
    /**
     * Get value for specific context and thread
     * @param context Target context
     * @param thread Target thread
     * @return Context-thread-local value
     */
    public T get(TruffleContext context, Thread thread) {
        return null; // Implementation details
    }
    
    /**
     * Set value for current context and thread
     * @param value New value
     */
    public void set(T value) {
        // Implementation details
    }
    
    /**
     * Set value for specific context and current thread
     * @param context Target context
     * @param value New value
     */
    public void set(TruffleContext context, T value) {
        // Implementation details
    }
}

/**
 * Action executed on specific threads
 */
public abstract class ThreadLocalAction {
    
    /**
     * Perform action on thread
     * @param access Thread access interface
     */
    protected abstract void perform(Access access);
    
    /**
     * Thread access interface for actions
     */
    public interface Access {
        
        /**
         * Get current thread
         * @return Thread instance
         */
        Thread getThread();
        
        /**
         * Check if thread is current
         * @return true if current thread
         */
        boolean isCurrentThread();
        
        /**
         * Submit action to thread
         * @param action Action to submit
         */
        void submit(ThreadLocalAction action);
    }
}

/**
 * Truffle file system abstraction
 */
public final class TruffleFile {
    
    /**
     * Check if file exists
     * @return true if exists
     */
    public boolean exists() {
        return false; // Implementation details
    }
    
    /**
     * Check if is directory
     * @return true if directory
     */
    public boolean isDirectory() {
        return false; // Implementation details
    }
    
    /**
     * Check if is regular file
     * @return true if regular file
     */
    public boolean isRegularFile() {
        return false; // Implementation details
    }
    
    /**
     * Get file size
     * @return File size in bytes
     */
    public long size() throws IOException {
        return 0; // Implementation details
    }
    
    /**
     * Get file name
     * @return File name
     */
    public String getName() {
        return null; // Implementation details
    }
    
    /**
     * Get file path
     * @return File path string
     */
    public String getPath() {
        return null; // Implementation details
    }
    
    /**
     * Read all bytes
     * @return File content as bytes
     */
    public byte[] readAllBytes() throws IOException {
        return null; // Implementation details
    }
    
    /**
     * Read all text
     * @param charset Character set
     * @return File content as string
     */
    public String readString(Charset charset) throws IOException {
        return null; // Implementation details
    }
    
    /**
     * Write bytes to file
     * @param bytes Bytes to write
     */
    public void write(byte[] bytes) throws IOException {
        // Implementation details
    }
    
    /**
     * Write string to file
     * @param content String content
     * @param charset Character set
     */
    public void writeString(String content, Charset charset) throws IOException {
        // Implementation details
    }
    
    /**
     * Create input stream
     * @return InputStream for file
     */
    public InputStream newInputStream() throws IOException {
        return null; // Implementation details
    }
    
    /**
     * Create output stream
     * @return OutputStream for file
     */
    public OutputStream newOutputStream() throws IOException {
        return null; // Implementation details
    }
    
    /**
     * List directory contents
     * @return Array of TruffleFile instances
     */
    public TruffleFile[] list() throws IOException {
        return null; // Implementation details
    }
    
    /**
     * Resolve child path
     * @param child Child path
     * @return Child TruffleFile
     */
    public TruffleFile resolve(String child) {
        return null; // Implementation details
    }
    
    /**
     * Get parent directory
     * @return Parent TruffleFile or null
     */
    public TruffleFile getParent() {
        return null; // Implementation details
    }
}

/**
 * Truffe logger with language-specific configuration
 */
public final class TruffleLogger {
    
    /**
     * Log info message
     * @param message Log message
     */
    public void info(String message) {
        // Implementation details
    }
    
    /**
     * Log warning message
     * @param message Log message
     */
    public void warning(String message) {
        // Implementation details
    }
    
    /**
     * Log error message
     * @param message Log message
     */
    public void severe(String message) {
        // Implementation details
    }
    
    /**
     * Log debug message
     * @param message Log message
     */
    public void fine(String message) {
        // Implementation details
    }
    
    /**
     * Check if level is loggable
     * @param level Log level
     * @return true if loggable
     */
    public boolean isLoggable(Level level) {
        return false; // Implementation details
    }
    
    /**
     * Log with level
     * @param level Log level
     * @param message Log message
     */
    public void log(Level level, String message) {
        // Implementation details
    }
    
    /**
     * Log with level and throwable
     * @param level Log level
     * @param message Log message
     * @param thrown Exception to log
     */
    public void log(Level level, String message, Throwable thrown) {
        // Implementation details
    }
}

/**
 * Safepoint management for thread coordination
 */
public final class TruffleSafepoint {
    
    /**
     * Poll safepoint on current thread
     */
    public static void poll() {
        // Implementation details
    }
    
    /**
     * Poll safepoint with node context
     * @param location Node location for debugging
     */
    public static void poll(Node location) {
        // Implementation details
    }
    
    /**
     * Set pending safepoint
     * @param action Action to execute at safepoint
     */
    public static void setPending(ThreadLocalAction action) {
        // Implementation details
    }
    
    /**
     * Check if safepoint is pending
     * @return true if pending
     */
    public static boolean isPending() {
        return false; // Implementation details
    }
}

/**
 * Compiler directives for optimization hints
 */
public final class CompilerDirectives {
    
    /**
     * Mark code path as unlikely
     * @param condition Condition to check
     * @return Original condition value
     */
    public static boolean injectBranchProbability(double probability, boolean condition) {
        return condition;
    }
    
    /**
     * Indicate slow path execution
     */
    public static void transferToInterpreter() {
        // Implementation details
    }
    
    /**
     * Indicate slow path with message
     * @param message Transfer reason
     */
    public static void transferToInterpreterAndInvalidate() {
        // Implementation details
    }
    
    /**
     * Check if compiled
     * @return true if compiled code
     */
    public static boolean inCompiledCode() {
        return false; // Implementation details
    }
    
    /**
     * Check if interpreting
     * @return true if interpreter
     */
    public static boolean inInterpreter() {
        return !inCompiledCode();
    }
    
    /**
     * Blackhole value to prevent optimization
     * @param value Value to blackhole
     */
    public static void blackhole(Object value) {
        // Implementation details
    }
    
    /**
     * Mark value as compilation final
     * @param value Value to mark
     * @return Original value
     */
    public static <T> T compilationFinal(T value) {
        return value;
    }
    
    /**
     * Ensure virtualized
     * @param object Object to virtualize
     * @return Original object
     */
    public static <T> T ensureVirtualized(T object) {
        return object;
    }
    
    /**
     * Cast exact type
     * @param value Value to cast
     * @param type Target type
     * @return Cast value
     */
    @SuppressWarnings("unchecked")
    public static <T> T castExact(Object value, Class<T> type) {
        return (T) value;
    }
    
    /**
     * Mark boundary between compiled and interpreter
     */
    public static void interpreterOnly(Runnable runnable) {
        runnable.run();
    }
}

/**
 * Compilation-time assertions
 */
public final class CompilerAsserts {
    
    /**
     * Assert never reached in compiled code
     */
    public static void neverPartOfCompilation() {
        // Implementation details
    }
    
    /**
     * Assert never reached with message
     * @param message Assertion message
     */
    public static void neverPartOfCompilation(String message) {
        // Implementation details
    }
    
    /**
     * Assert always compiled
     */
    public static void partialEvaluationConstant(Object value) {
        // Implementation details
    }
    
    /**
     * Assert compilation final
     * @param value Value to check
     */
    public static void compilationConstant(Object value) {
        // Implementation details
    }
}

/**
 * Option descriptor for language/instrument options
 */
public final class OptionDescriptor {
    
    /**
     * Create option descriptor
     * @param key Option key
     * @param help Help text
     * @return OptionDescriptor instance
     */
    public static OptionDescriptor newBuilder(OptionKey<?> key, String help) {
        return null; // Implementation details
    }
    
    /**
     * Get option key
     * @return OptionKey instance
     */
    public OptionKey<?> getKey() {
        return null; // Implementation details
    }
    
    /**
     * Get help text
     * @return Help text
     */
    public String getHelp() {
        return null; // Implementation details
    }
    
    /**
     * Get option name
     * @return Option name
     */
    public String getName() {
        return null; // Implementation details
    }
}

/**
 * Descriptor for option categories
 */
public enum OptionCategory {
    USER, EXPERT, DEBUG
}

/**
 * Stability level for APIs
 */
public enum OptionStability {
    STABLE, EXPERIMENTAL
}

/**
 * Memory management utilities
 */
public final class MemoryUtil {
    
    /**
     * Get object size estimate
     * @param object Object to measure
     * @return Size estimate in bytes
     */
    public static long sizeOf(Object object) {
        return 0; // Implementation details
    }
    
    /**
     * Trigger garbage collection hint
     */
    public static void gc() {
        System.gc();
    }
}