flesh out some classpath classes

classpath/java/lang/Character.java

@@ -10,4 +10,20 @@ public final class Character {
   public char charValue() {
     return value;
   }
+
+  public static char toLowerCase(char c) {
+    if (c >= 'A' && c <= 'Z') {
+      return (char) ((c - 'A') + 'a');
+    } else {
+      return c;
+    }
+  }
+
+  public static char toUpperCase(char c) {
+    if (c >= 'a' && c <= 'z') {
+      return (char) ((c - 'a') + 'A');
+    } else {
+      return c;
+    }
+  }
 }

classpath/java/lang/Comparable.java

@@ -0,0 +1,5 @@
+package java.lang;
+
+public interface Comparable<T> {
+  public int compareTo(T o);
+}

classpath/java/lang/String.java

@@ -1,28 +1,27 @@
 package java.lang;
 
-public final class String {
+public final class String implements Comparable<String> {
   private Object data;
   private int offset;
   private int length;
   private int hash;
 
   public String(char[] data, int offset, int length, boolean copy) {
-    if (copy) {
-      char[] c = new char[length];
-      System.arraycopy(data, offset, c, 0, length);
-      
-      this.data = c;
-      this.length = length;
-    } else {
-      this.data = data;
-      this.offset = offset;
-      this.length = length;
-    }
+    this((Object) data, offset, length, copy);
   }
 
   public String(byte[] data, int offset, int length, boolean copy) {
+    this((Object) data, offset, length, copy);
+  }
+
+  private String(Object data, int offset, int length, boolean copy) {
     if (copy) {
-      byte[] c = new byte[length];
+      Object c;
+      if (data instanceof char[]) {
+        c = new char[length];
+      } else {
+        c = new byte[length];
+      }
       System.arraycopy(data, offset, c, 0, length);
       
       this.data = c;
@@ -34,19 +33,107 @@ public final class String {
     }
   }
 
-  public int length() {
-    return length;
-  }
-
   public static String valueOf(int v) {
     return valueOf((long) v);
   }
 
+  public int length() {
+    return length;
+  }
+
+  public int hashCode() {
+    if (hash == 0) {
+      for (int i = 0; i < length; ++i) hash = (hash * 31) + charAt(i);
+    }
+    return hash;
+  }
+
+  public boolean equals(Object o) {
+    return o instanceof String && compareTo((String) o) == 0;
+  }
+
+  public boolean equalsIgnoreCase(String s) {
+    return compareToIgnoreCase(s) == 0;
+  }
+
+  public int compareTo(String s) {
+    int d = length - s.length;
+    if (d != 0) {
+      return d;
+    } else {
+      for (int i = 0; i < length; ++i) {
+        d = charAt(i) - s.charAt(i);
+        if (d != 0) {
+          return d;
+        }
+      }
+      return 0;
+    }
+  }
+
+  public int compareToIgnoreCase(String s) {
+    int d = length - s.length;
+    if (d != 0) {
+      return d;
+    } else {
+      for (int i = 0; i < length; ++i) {
+        d = Character.toLowerCase(charAt(i))
+          - Character.toLowerCase(s.charAt(i));
+        if (d != 0) {
+          return d;
+        }
+      }
+      return 0;
+    }
+  }
+
+  public String substring(int start) {
+    return substring(start, length);
+  }
+
+  public String substring(int start, int end) {
+    if (start >= 0 && end >= start && end <= length) {
+      if (start == 0 && end == length) {
+        return this;
+      } else if (end - start == 0) {
+        return "";
+      } else  {
+        return new String(data, offset + start, end - start, false);
+      }
+    } else {
+      throw new IndexOutOfBoundsException();
+    }
+  }
+
+  public boolean startsWith(String s) {
+    if (length >= s.length) {
+      return substring(0, s.length).compareTo(s) != 0;
+    } else {
+      return false;
+    }
+  }
+
+  public boolean endsWith(String s) {
+    if (length >= s.length) {
+      return substring(length - s.length).compareTo(s) != 0;
+    } else {
+      return false;
+    }
+  }
+
+  public String concat(String s) {
+    if (s.length() == 0) {
+      return this;
+    } else {
+      return this + s;
+    }
+  }
+
   public void getChars(int srcOffset, int srcLength,
                        char[] dst, int dstOffset)
   {
     if (srcOffset + srcLength > length) {
-      throw new ArrayIndexOutOfBoundsException();
+      throw new IndexOutOfBoundsException();
     }
 
     if (data instanceof char[]) {
@@ -60,6 +147,18 @@ public final class String {
     }
   }
 
+  public char charAt(int index) {
+    if (index < 0 || index > length) {
+      throw new IndexOutOfBoundsException();
+    }
+    
+    if (data instanceof char[]) {
+      return ((char[]) data)[index + offset];
+    } else {
+      return (char) ((byte[]) data)[index + offset];
+    }    
+  }
+
   public static String valueOf(long v) {
     if (v == 0) {
       return valueOf('0');

classpath/java/lang/System.java

@@ -13,6 +13,8 @@ public abstract class System {
 
   public static native String getProperty(String name);
 
+  public static native long currentTimeMillis();
+
   public static void loadLibrary(String name) {
     Runtime.getRuntime().loadLibrary(name);
   }

classpath/java/util/ArrayList.java

@@ -45,6 +45,15 @@ public class ArrayList<T> implements List<T> {
     return size;
   }
 
+  public boolean contains(T element) {
+    for (int i = 0; i < size; ++i) {
+      if (equal(element, array[i])) {
+        return true;
+      }
+    }
+    return false;
+  }
+
   public boolean add(T element) {
     resize();
     array[size++] = element;

classpath/java/util/Arrays.java

@@ -3,6 +3,10 @@ package java.util;
 public class Arrays {
   private Arrays() { }
 
+  private static boolean equal(Object a, Object b) {
+    return (a == null && b == null) || (a != null && a.equals(b));
+  }
+
   public static <T> List<T> asList(final T ... array) {
     return new List<T>() {
       public int size() {
@@ -13,6 +17,15 @@ public class Arrays {
         throw new UnsupportedOperationException();
       }
 
+      public boolean contains(T element) {
+        for (int i = 0; i < array.length; ++i) {
+          if (equal(element, array[i])) {
+            return true;
+          }
+        }
+        return false;
+      }
+
       public T get(int index) {
         return array[index];
       }

classpath/java/util/Collection.java

@@ -3,6 +3,8 @@ package java.util;
 public interface Collection<T> extends Iterable<T> {
   public int size();
 
+  public boolean contains(T element);
+
   public boolean add(T element);
 
   public boolean remove(T element);

classpath/java/util/Collections.java

@@ -32,6 +32,10 @@ public class Collections {
       synchronized (lock) { return collection.size(); }
     }
 
+    public synchronized boolean contains(T e) {
+      synchronized (lock) { return collection.contains(e); }
+    }
+
     public synchronized boolean add(T e) {
       synchronized (lock) { return collection.add(e); }
     }

classpath/java/util/HashMap.java

@@ -3,7 +3,6 @@ package java.util;
 public class HashMap<K, V> implements Map<K, V> {
   private int size;
   private Cell[] array;
-  private Cell<K, V> nullCell;
   private final CellFactory factory;
 
   HashMap(int capacity, CellFactory<K, V> factory) {
@@ -31,6 +30,14 @@ public class HashMap<K, V> implements Map<K, V> {
     return size;
   }
 
+  private static int hash(Object a) {
+    return (a == null ? 0 : a.hashCode());
+  }
+
+  private static boolean equal(Object a, Object b) {
+    return (a == null && b == null) || (a != null && a.equals(b));
+  }
+
   private void resize() {
     if (array == null || size >= array.length * 2) {
       resize(array == null ? 16 : array.length * 2);
@@ -64,58 +71,45 @@ public class HashMap<K, V> implements Map<K, V> {
   }
 
   private Cell<K, V> find(K key) {
-    if (key == null) {
-      return nullCell;
-    } else {
-      if (array != null) {
-        int index = key.hashCode() & (array.length - 1);
-        for (Cell<K, V> c = array[index]; c != null; c = c.next()) {
-          if (key.equals(c.getKey())) {
-            return c;
-          }
+    if (array != null) {
+      int index = hash(key) & (array.length - 1);
+      for (Cell<K, V> c = array[index]; c != null; c = c.next()) {
+        if (equal(key, c.getKey())) {
+          return c;
         }
       }
-
-      return null;
     }
+
+    return null;
   }
 
   private void insert(Cell<K, V> cell) {
     ++ size;
 
-    if (cell.getKey() == null) {
-      nullCell = cell;
-    } else {
-      resize();
+    resize();
 
-      int index = cell.hashCode() & (array.length - 1);
-      cell.setNext(array[index]);
-      array[index] = cell;
-    }
+    int index = cell.hashCode() & (array.length - 1);
+    cell.setNext(array[index]);
+    array[index] = cell;
   }
 
   // primarily for use by WeakHashMap:
-  void remove(Cell<K, V> cell) { 
-    if (cell == nullCell) {
-      nullCell = null;
-      -- size;
-    } else {
-      int index = cell.hashCode() & (array.length - 1);
-      Cell<K, V> p = null;
-      for (Cell<K, V> c = array[index]; c != null; c = c.next()) {
-        if (c == cell) {
-          if (p == null) {
-            array[index] = c.next();
-          } else {
-            p.setNext(c.next());
-          }
-          -- size;
-          break;
+  void remove(Cell<K, V> cell) {
+    int index = cell.hashCode() & (array.length - 1);
+    Cell<K, V> p = null;
+    for (Cell<K, V> c = array[index]; c != null; c = c.next()) {
+      if (c == cell) {
+        if (p == null) {
+          array[index] = c.next();
+        } else {
+          p.setNext(c.next());
         }
+        -- size;
+        break;
       }
-
-      resize();
     }
+
+    resize();
   }
 
   private Cell<K, V> putCell(K key, V value) {
@@ -129,6 +123,14 @@ public class HashMap<K, V> implements Map<K, V> {
     return c;
   }
 
+  public boolean containsKey(K key) {
+    return find(key) != null;
+  }
+
+  public boolean containsValue(V value) {
+    return values().contains(value);
+  }
+
   public V get(K key) {
     Cell<K, V> c = find(key);
     return (c == null ? null : c.getValue());
@@ -136,31 +138,23 @@ public class HashMap<K, V> implements Map<K, V> {
 
   public Cell<K, V> removeCell(K key) {
     Cell<K, V> old = null;
-    if (key == null) {
-      if (nullCell != null) {
-        old = nullCell;
-        nullCell = null;
-        -- size;
-      }
-    } else {
-      if (array != null) {
-        int index = key.hashCode() & (array.length - 1);
-        Cell<K, V> p = null;
-        for (Cell<K, V> c = array[index]; c != null; c = c.next()) {
-          if (key.equals(c.getKey())) {
-            old = c;
-            if (p == null) {
-              array[index] = c.next();
-            } else {
-              p.setNext(c.next());
-            }
-            -- size;
-            break;
+    if (array != null) {
+      int index = hash(key) & (array.length - 1);
+      Cell<K, V> p = null;
+      for (Cell<K, V> c = array[index]; c != null; c = c.next()) {
+        if (equal(key, c.getKey())) {
+          old = c;
+          if (p == null) {
+            array[index] = c.next();
+          } else {
+            p.setNext(c.next());
           }
+          -- size;
+          break;
         }
-
-        resize();
       }
+
+      resize();
     }
     return old;
   }
@@ -238,7 +232,7 @@ public class HashMap<K, V> implements Map<K, V> {
     }
 
     public int hashCode() {
-      return key.hashCode();
+      return (key == null ? 0 : key.hashCode());
     }
   }
 
@@ -253,6 +247,10 @@ public class HashMap<K, V> implements Map<K, V> {
       return HashMap.this.size();
     }
 
+    public boolean contains(Entry<K, V> e) {
+      return containsKey(e.getKey());
+    }
+
     public boolean add(Entry<K, V> e) {
       return putCell(e.getKey(), e.getValue()) != null;
     }
@@ -275,6 +273,10 @@ public class HashMap<K, V> implements Map<K, V> {
       return HashMap.this.size();
     }
 
+    public boolean contains(K key) {
+      return containsKey(key);
+    }
+
     public boolean add(K key) {
       return putCell(key, null) != null;
     }
@@ -298,6 +300,10 @@ public class HashMap<K, V> implements Map<K, V> {
       return HashMap.this.size();
     }
 
+    public boolean contains(V value) {
+      return containsValue(value);
+    }
+
     public boolean add(V value) {
       throw new UnsupportedOperationException();
     }

classpath/java/util/HashSet.java

@@ -17,6 +17,10 @@ public class HashSet<T> implements Set<T> {
     return map.size();
   }
 
+  public boolean contains(T element) {
+    return map.containsKey(element);
+  }
+
   public boolean add(T element) {
     return map.put(element, Value) != Value;
   }

classpath/java/util/Hashtable.java

@@ -15,6 +15,14 @@ public class Hashtable<K, V> implements Map<K, V> {
     return map.size();
   }
 
+  public synchronized boolean containsKey(K key) {
+    return map.containsKey(key);
+  }
+
+  public synchronized boolean containsValue(V value) {
+    return map.containsValue(value);
+  }
+
   public synchronized V get(K key) {
     return map.get(key);
   }

classpath/java/util/LinkedList.java

@@ -20,7 +20,7 @@ public class LinkedList<T> implements List<T> {
     return (a == null && b == null) || (a != null && a.equals(b));
   }
 
-  private void add(Cell<T> c) {
+  private void addFirst(Cell<T> c) {
     ++ size;
 
     if (front == null) {
@@ -31,6 +31,17 @@ public class LinkedList<T> implements List<T> {
     }
   }
   
+  private void addLast(Cell<T> c) {
+    ++ size;
+
+    if (front == null) {
+      front = rear = c;
+    } else {
+      c.next = front;
+      front = c;
+    }
+  }
+  
   private Cell<T> find(T element) {
     for (Cell<T> c = front; c != null; c = c.next) {
       if (equal(c.value, element)) {
@@ -60,11 +71,23 @@ public class LinkedList<T> implements List<T> {
     return size;
   }
 
+  public boolean contains(T element) {
+    return find(element) != null;
+  }
+
   public boolean add(T element) {
-    add(new Cell(element, null, null));
+    addFirst(element);
     return true;
   }
 
+  public void addFirst(T element) {
+    addFirst(new Cell(element, null, null));
+  }
+
+  public void addLast(T element) {
+    addLast(new Cell(element, null, null));
+  }
+
   public T get(int index) {
     return find(index).value;
   }

classpath/java/util/Map.java

@@ -3,6 +3,10 @@ package java.util;
 public interface Map<K, V> {
   public int size();
 
+  public boolean containsKey(K key);
+
+  public boolean containsValue(V value);
+
   public V get(K key);
 
   public V put(K key, V value);

classpath/java/util/Vector.java

@@ -15,6 +15,10 @@ public class Vector<T> implements List<T> {
     return list.size();
   }
 
+  public synchronized boolean contains(T element) {
+    return list.contains(element);
+  }
+
   public synchronized boolean add(T element) {
     return list.add(element);
   }
@@ -43,6 +47,12 @@ public class Vector<T> implements List<T> {
     list.clear();
   }
 
+  public synchronized void copyInto(Object[] array) {
+    for (int i = 0; i < size(); ++i) {
+      array[i] = list.get(i);
+    }
+  }
+
   public Iterator<T> iterator() {
     return new Collections.ArrayListIterator(this);
   }

classpath/java/util/WeakHashMap.java

@@ -30,6 +30,16 @@ public class WeakHashMap<K, V> implements Map<K, V> {
     return map.size();
   }
 
+  public boolean containsKey(K key) {
+    poll();
+    return map.containsKey(key);
+  }
+
+  public boolean containsValue(V value) {
+    poll();
+    return map.containsValue(value);
+  }
+
   public V get(K key) {
     poll();
     return map.get(key);
@@ -53,6 +63,14 @@ public class WeakHashMap<K, V> implements Map<K, V> {
     return map.entrySet();
   }
 
+  public Set<K> keySet() {
+    return map.keySet();
+  }
+
+  public Collection<V> values() {
+    return map.values();
+  }
+
   private static class MyCell<K, V>
     extends WeakReference<K>
     implements HashMap.Cell<K, V>
@@ -65,7 +83,7 @@ public class WeakHashMap<K, V> implements Map<K, V> {
       super(key);
       this.value = value;
       this.next = next;
-      this.hashCode = key.hashCode();
+      this.hashCode = (key == null ? 0 : key.hashCode());
     }
 
     public K getKey() {

src/builtin.cpp

@@ -97,6 +97,12 @@ arraycopy(Thread* t, jobject src, jint srcOffset, jobject dst, jint dstOffset,
   t->exception = makeArrayStoreException(t);
 }
 
+jlong
+currentTimeMillis(Thread* t)
+{
+  return t->vm->system->now();
+}
+
 void
 loadLibrary(Thread* t, jobject, jstring nameString)
 {

src/system.cpp

@@ -93,15 +93,6 @@ run(void* t)
   return 0;
 }
 
-int64_t
-now()
-{
-  timeval tv = { 0, 0 };
-  gettimeofday(&tv, 0);
-  return (static_cast<int64_t>(tv.tv_sec) * 1000) +
-    (static_cast<int64_t>(tv.tv_usec) / 1000);
-}
-
 const bool Verbose = false;
 
 class MySystem: public System {
@@ -183,7 +174,7 @@ class MySystem: public System {
         this->depth = 0;
         this->context = 0;
         if (time) {
-          int64_t then = now() + time;
+          int64_t then = s->now() + time;
           timespec ts = { then / 1000, (then % 1000) * 1000 * 1000 };
           int rv = pthread_cond_timedwait(&condition, &mutex, &ts);
           assert(s, rv == 0);
@@ -357,6 +348,13 @@ class MySystem: public System {
     nanosleep(&ts, 0);
   }
 
+  virtual int64_t now() {
+    timeval tv = { 0, 0 };
+    gettimeofday(&tv, 0);
+    return (static_cast<int64_t>(tv.tv_sec) * 1000) +
+      (static_cast<int64_t>(tv.tv_usec) / 1000);
+  }
+
   virtual uint64_t call(void* function, uintptr_t* arguments, uint8_t* types,
                         unsigned count, unsigned size, unsigned returnType)
   {

src/system.h

@@ -61,6 +61,7 @@ class System: public Allocator {
   virtual Status start(Runnable*) = 0;
   virtual Status make(Monitor**) = 0;
   virtual void sleep(int64_t milliseconds) = 0;
+  virtual int64_t now() = 0;
   virtual uint64_t call(void* function, uintptr_t* arguments, uint8_t* types,
                         unsigned count, unsigned size,
                         unsigned returnType) = 0;