/** The minimum set of functionality required for objects which are manipulated by JavaScript */
public abstract class JS {
-
- public static boolean checkAssertions = false;
-
public static final JS METHOD = new JS() { };
- public final JS unclone() { return _unclone(); }
- public final JS jsclone() throws JSExn { return new Clone(this); }
public JS.Enumeration keys() throws JSExn { throw new JSExn("you can't enumerate the keys of this object (class=" + getClass().getName() +")"); }
public JS get(JS key) throws JSExn { return null; }
public void put(JS key, JS val) throws JSExn { throw new JSExn("" + key + " is read only (class=" + getClass().getName() +")"); }
- public InputStream getInputStream() throws IOException {
- throw new IOException("this object doesn't have a stream associated with it " + getClass().getName() + ")");
- }
-
- public final boolean hasTrap(JS key) { return getTrap(key) != null; }
-
public JS callMethod(JS method, JS a0, JS a1, JS a2, JS[] rest, int nargs) throws JSExn {
throw new JSExn("method not found (" + JS.debugToString(method) + ")");
}
-
public JS call(JS a0, JS a1, JS a2, JS[] rest, int nargs) throws JSExn {
throw new JSExn("you cannot call this object (class=" + this.getClass().getName() +")");
}
+ public InputStream getInputStream() throws IOException {
+ throw new IOException("this object doesn't have a stream associated with it " + getClass().getName() + ")");
+ }
+ public final JS unclone() { return _unclone(); }
+ public final JS jsclone() throws JSExn { return new Clone(this); }
+ public final boolean hasTrap(JS key) { return getTrap(key) != null; }
public final boolean equals(Object o) { return this == o || ((o instanceof JS) && jsequals((JS)o)); }
+ // Discourage people from using toString()
+ public final String toString() { return "JS Object [class=" + getClass().getName() + "]"; }
- // FIXME: Remove this, eventually
- public final String toString() { throw new Error("you shouldn't use toString() on JS objects"); }
-
- // These are only used internally by org.ibex.js
+ // Package private methods
Trap getTrap(JS key) { return null; }
void putTrap(JS key, Trap value) throws JSExn { throw new JSExn("traps cannot be placed on this object (class=" + this.getClass().getName() +")"); }
String coerceToString() throws JSExn { throw new JSExn("can't coerce to a string (class=" + getClass().getName() +")"); }
- String debugToString() { return "[class=" + getClass().getName() + "]"; }
boolean jsequals(JS o) { return this == o; }
-
- public static class O extends JS {
+ JS _unclone() { return this; }
+
+ public static class O extends JS implements Cloneable {
private Hash entries;
public Enumeration keys() throws JSExn { return entries == null ? (Enumeration)EMPTY_ENUMERATION : (Enumeration)new JavaEnumeration(null,entries.keys()); }
}
}
- public static class BT extends O {
- private BalancedTree bt;
- private final BalancedTree bt() { if(bt != null) return bt; return bt = new BalancedTree(); }
- public final void insertNode(int index, Object o) { bt().insertNode(index,o); }
- public final void clear() { bt().clear(); }
- public final Object getNode(int i) { return bt().getNode(i); }
- public final int treeSize() { return bt().treeSize(); }
- public final Object deleteNode(int i) { return bt().deleteNode(i); }
- public final void replaceNode(int index, Object o) { bt().replaceNode(index,o); }
- public final int indexNode(Object o) { return bt().indexNode(o); }
- }
-
- // FEATURE: JS.StringKeys
- /* public static StringKeys extends JS {
- public JS get(JS key) { return JS.isString(key) ? get(JS.toString(key) : null; }
- ...
- */
-
- JS _unclone() { return this; }
-
public interface Cloneable { }
-
- public static class Clone extends JS.O implements Cloneable {
+
+ public static class Clone extends O {
protected final JS clonee;
- JS _unclone() { return clonee.unclone(); }
- public JS getClonee() { return clonee; }
public Clone(JS clonee) throws JSExn {
if(!(clonee instanceof Cloneable)) throw new JSExn("" + clonee.getClass().getName() + " isn't cloneable");
this.clonee = clonee;
}
- public boolean jsequals(JS o) { return unclone().jsequals(o.unclone()); }
+ JS _unclone() { return clonee.unclone(); }
+ boolean jsequals(JS o) { return clonee.jsequals(o); }
+
public Enumeration keys() throws JSExn { return clonee.keys(); }
- public JS get(JS key) throws JSExn { return clonee.get(key); }
- public void put(JS key, JS val) throws JSExn { clonee.put(key, val); }
- public JS callMethod(JS method, JS a0, JS a1, JS a2, JS[] rest, int nargs) throws JSExn {
- return clonee.callMethod(method, a0, a1, a2, rest, nargs);
+ public final JS get(JS key) throws JSExn { return clonee.get(key); }
+ public final void put(JS key, JS val) throws JSExn { clonee.put(key,val); }
+ public final JS callMethod(JS method, JS a0, JS a1, JS a2, JS[] rest, int nargs) throws JSExn {
+ return clonee.callMethod(method,a0,a1,a2,rest,nargs);
}
public JS call(JS a0, JS a1, JS a2, JS[] rest, int nargs) throws JSExn {
return clonee.call(a0, a1, a2, rest, nargs);
}
public InputStream getInputStream() throws IOException { return clonee.getInputStream(); }
+ // FIXME: This shouldn't be necessary (its for Ibex.Blessing)
+ public JS getClonee() { return clonee; }
}
public static abstract class Enumeration extends JS {
public final JS nextElement() throws JSExn { return !done ? _nextElement() : parent != null ? parent.nextElement() : null; }
public JS get(JS key) throws JSExn {
- //#switch(JS.toString(key))
+ //#jswitch(key)
case "hasMoreElements": return B(hasMoreElements());
case "nextElement": return nextElement();
//#end
return super.get(key);
}
}
+
public static class EmptyEnumeration extends Enumeration {
public EmptyEnumeration(Enumeration parent) { super(parent); }
protected boolean _hasMoreElements() { return false; }
public static boolean toBoolean(JS o) {
if(o == null) return false;
if(o instanceof JSNumber) return ((JSNumber)o).toBoolean();
- if(o instanceof JSString) return ((JSString)o).length() != 0;
+ if(o instanceof JSString) return ((JSString)o).s.length() != 0;
return true;
}
//#repeat long/int/double/float toLong/toInt/toDouble/toFloat Long/Integer/Double/Float parseLong/parseInt/parseDouble/parseFloat
public static String debugToString(JS o) {
try { return toString(o); }
- catch(JSExn e) { return o.debugToString(); }
+ catch(JSExn e) { return o.toString(); }
}
public static boolean isInt(JS o) {
if(o instanceof JSString) return true;
return false;
}
-
+
// Instance Methods ////////////////////////////////////////////////////////////////////
public final static JS NaN = new JSNumber.D(Double.NaN);
public final static JS ZERO = new JSNumber.I(0);
public final static JS ONE = new JSNumber.I(1);
+ public final static JS MATH = new JSMath();
public static final JS T = new JSNumber.B(true);
public static final JS F = new JSNumber.B(false);
private static final int CACHE_SIZE = 65536 / 4; // must be a power of two
private static final JSString[] stringCache = new JSString[CACHE_SIZE];
- public static final JS S(String s) {
+ public static final JS S(String s) {
if(s == null) return null;
int slot = s.hashCode()&(CACHE_SIZE-1);
JSString ret = stringCache[slot];
if(ret == null || !ret.s.equals(s)) stringCache[slot] = ret = new JSString(s);
return ret;
}
+ public static final JS S(String s, boolean intern) { return intern ? JSString.intern(s) : S(s); }
public static final JS N(double d) { return new JSNumber.D(d); }
public static final JS N(long l) { return new JSNumber.L(l); }
private static Enumeration EMPTY_ENUMERATION = new EmptyEnumeration(null);
public static JS fromReader(String sourceName, int firstLine, Reader sourceCode) throws IOException {
- return JSFunction._fromReader(sourceName, firstLine, sourceCode);
+ return Parser.fromReader(sourceName, firstLine, sourceCode);
}
- // HACK: caller can't know if the argument is a JSFunction or not...
- public static JS cloneWithNewParentScope(JS j, JSScope s) {
- return ((JSFunction)j)._cloneWithNewParentScope(s);
+ public static JS cloneWithNewGlobalScope(JS js, JS s) {
+ if(js instanceof JSFunction)
+ return ((JSFunction)js)._cloneWithNewParentScope(new JSScope.Top(s));
+ else
+ return js;
}
// Trap support //////////////////////////////////////////////////////////////////////////////
/** performs a put, triggering traps if present; traps are run in an unpauseable interpreter */
- public void putAndTriggerTraps(JS key, JS value) throws JSExn {
+ public final void putAndTriggerTraps(JS key, JS value) throws JSExn {
Trap t = getTrap(key);
- if (t != null) t.invoke(value);
- else put(key, value);
+ if(JS.isString(key) && JS.toString(key).equals("action")) System.err.println("got put to action! + " + t);
+ if(t == null || (t = t.writeTrap()) == null) put(key,value);
+ else new Interpreter(t,value,false).resume();
}
/** performs a get, triggering traps if present; traps are run in an unpauseable interpreter */
- public JS getAndTriggerTraps(JS key) throws JSExn {
+ public final JS getAndTriggerTraps(JS key) throws JSExn {
+ Trap t = getTrap(key);
+ if (t == null || (t = t.readTrap()) == null) return get(key);
+ else return new Interpreter(t,null,false).resume();
+ }
+
+ public final JS justTriggerTraps(JS key, JS value) throws JSExn {
Trap t = getTrap(key);
- if (t != null) return t.invoke();
- else return get(key);
+ if(t == null || (t = t.writeTrap()) == null) return value;
+ else return new Interpreter(t,value,true).resume();
}
/** adds a trap, avoiding duplicates */
- final void addTrap(JS key, JSFunction f) throws JSExn {
+ // FIXME: This shouldn't be public, it is needed for a hack in Template.java
+ public void addTrap(JS key, JSFunction f) throws JSExn {
if (f.numFormalArgs > 1) throw new JSExn("traps must take either one argument (write) or no arguments (read)");
boolean isRead = f.numFormalArgs == 0;
for(Trap t = getTrap(key); t != null; t = t.next) if (t.f == f) return;
}
/** deletes a trap, if present */
- final void delTrap(JS key, JSFunction f) throws JSExn {
+ // FIXME: This shouldn't be public, it is needed for a hack in Template.java
+ public void delTrap(JS key, JSFunction f) throws JSExn {
Trap t = (Trap)getTrap(key);
if (t == null) return;
- if (t.f == f) { putTrap(t.name, t.next); return; }
+ if (t.f == f) { putTrap(t.target, t.next); return; }
for(; t.next != null; t = t.next) if (t.next.f == f) { t.next = t.next.next; return; }
}