private ScriptableObject getBuiltInDescriptor(String name) { Object value = null; int attr = EMPTY; Scriptable scope = getParentScope(); if (scope == null) { scope = this; } int info = findInstanceIdInfo(name); if (info != 0) { int id = (info & 0xFFFF); value = getInstanceIdValue(id); attr = (info >>> 16); return buildDataDescriptor(scope, value, attr); } if (prototypeValues != null) { int id = prototypeValues.findId(name); if (id != 0) { value = prototypeValues.get(id); attr = prototypeValues.getAttributes(id); return buildDataDescriptor(scope, value, attr); } } return null; }
@Override public void delete(String name) { int info = findInstanceIdInfo(name); if (info != 0) { // Let the super class to throw exceptions for sealed objects if (!isSealed()) { int attr = (info >>> 16); if ((attr & PERMANENT) == 0) { int id = (info & 0xFFFF); setInstanceIdValue(id, NOT_FOUND); } return; } } if (prototypeValues != null) { int id = prototypeValues.findId(name); if (id != 0) { if (!isSealed()) { prototypeValues.delete(id); } return; } } super.delete(name); }
@Override public void defineOwnProperty(Context cx, Object key, ScriptableObject desc) { if (key instanceof String) { String name = (String) key; int info = findInstanceIdInfo(name); if (info != 0) { int id = (info & 0xFFFF); if (isAccessorDescriptor(desc)) { delete(id); // it will be replaced with a slot } else { int attr = (info >>> 16); Object value = getProperty(desc, "value"); setInstanceIdValue(id, value == NOT_FOUND ? Undefined.instance : value); setAttributes(id, applyDescriptorToAttributeBitset(attr, desc)); return; } } if (prototypeValues != null) { int id = prototypeValues.findId(name); if (id != 0) { if (isAccessorDescriptor(desc)) { prototypeValues.delete(id); // it will be replaced with a slot } else { int attr = prototypeValues.getAttributes(id); Object value = getProperty(desc, "value"); prototypeValues.set(id, this, value == NOT_FOUND ? Undefined.instance : value); prototypeValues.setAttributes(id, applyDescriptorToAttributeBitset(attr, desc)); return; } } } } super.defineOwnProperty(cx, key, desc); }
@Override public void put(String name, Scriptable start, Object value) { int info = findInstanceIdInfo(name); if (info != 0) { if (start == this && isSealed()) { throw Context.reportRuntimeError1("msg.modify.sealed", name); } int attr = (info >>> 16); if ((attr & READONLY) == 0) { if (start == this) { int id = (info & 0xFFFF); setInstanceIdValue(id, value); } else { start.put(name, start, value); } } return; } if (prototypeValues != null) { int id = prototypeValues.findId(name); if (id != 0) { if (start == this && isSealed()) { throw Context.reportRuntimeError1("msg.modify.sealed", name); } prototypeValues.set(id, start, value); return; } } super.put(name, start, value); }
@Override public int getAttributes(String name) { int info = findInstanceIdInfo(name); if (info != 0) { int attr = (info >>> 16); return attr; } if (prototypeValues != null) { int id = prototypeValues.findId(name); if (id != 0) { return prototypeValues.getAttributes(id); } } return super.getAttributes(name); }
@Override public Object get(String name, Scriptable start) { int info = findInstanceIdInfo(name); if (info != 0) { int id = (info & 0xFFFF); Object value = getInstanceIdValue(id); if (value != NOT_FOUND) return value; } if (prototypeValues != null) { int id = prototypeValues.findId(name); if (id != 0) { Object value = prototypeValues.get(id); if (value != NOT_FOUND) return value; } } return super.get(name, start); }
@Override public boolean has(String name, Scriptable start) { int info = findInstanceIdInfo(name); if (info != 0) { int attr = (info >>> 16); if ((attr & PERMANENT) != 0) { return true; } int id = (info & 0xFFFF); return NOT_FOUND != getInstanceIdValue(id); } if (prototypeValues != null) { int id = prototypeValues.findId(name); if (id != 0) { return prototypeValues.has(id); } } return super.has(name, start); }
@Override public void setAttributes(String name, int attributes) { ScriptableObject.checkValidAttributes(attributes); int info = findInstanceIdInfo(name); if (info != 0) { int currentAttributes = (info >>> 16); if (attributes != currentAttributes) { throw new RuntimeException("Change of attributes for this id is not supported"); } return; } if (prototypeValues != null) { int id = prototypeValues.findId(name); if (id != 0) { prototypeValues.setAttributes(id, attributes); return; } } super.setAttributes(name, attributes); }