/** 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); }
throw new JSExn("method not found (" + JS.debugToString(method) + ")");
}
- // FIXME: JSArgs objects, pointers into stack frame
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 final boolean equals(Object o) { return this == o || ((o instanceof JS) && jsequals((JS)o)); }
- // FIXME: Remove this, eventually
- public final String toString() { throw new Error("you shouldn't use toString() on JS objects"); }
+ public final String toString() {
+ // Discourage people from using toString()
+ String s = "JS Object [class=" + getClass().getName() + "]";
+ String ext = extendedToString();
+ return ext == null ? s : s + " " + ext;
+ }
// These are only used internally by org.ibex.js
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() +")"); }
boolean jsequals(JS o) { return this == o; }
+ String extendedToString() { return null; }
- public static class O extends JS {
+ 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 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 JS.O {
protected final JS clonee;
JS _unclone() { return clonee.unclone(); }
public JS getClonee() { return clonee; }
}
public boolean jsequals(JS o) { return unclone().jsequals(o.unclone()); }
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 get(JS key) throws JSExn { return clonee.getAndTriggerTraps(key); }
+ public void put(JS key, JS val) throws JSExn { clonee.putAndTriggerTraps(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 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
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 "[class=" + o.getClass().getName() + "]"; }
+ catch(JSExn e) { return o.toString(); }
}
public static boolean isInt(JS o) {
if(o instanceof JSString) return true;
return false;
}
+
+ public static JS newArray() { return new JSArray(); }
+ public static JS newRegexp(JS pat, JS flags) throws JSExn { return new JSRegexp(pat,flags); }
// 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); }
/** performs a put, triggering traps if present; traps are run in an unpauseable interpreter */
public void putAndTriggerTraps(JS key, JS value) throws JSExn {
Trap t = getTrap(key);
- if (t != null) t.invoke(value);
- else put(key, value);
+ 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 {
Trap t = getTrap(key);
- if (t != null) return t.invoke();
- else return get(key);
+ if (t == null || (t = t.readTrap()) == null) return get(key);
+ else return new Interpreter(t,null,false).resume();
+ }
+
+ public JS justTriggerTraps(JS key, JS value) throws JSExn {
+ Trap t = getTrap(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 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; }
}
projects / org.ibex.core.git / blobdiff