| /* |
| * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.nashorn.internal.codegen; |
| |
| import static jdk.nashorn.internal.codegen.CompilerConstants.constructorNoLookup; |
| import static jdk.nashorn.internal.codegen.CompilerConstants.virtualCallNoLookup; |
| |
| import java.util.LinkedHashSet; |
| import java.util.List; |
| import java.util.Set; |
| import jdk.nashorn.internal.codegen.types.Type; |
| import jdk.nashorn.internal.ir.Expression; |
| import jdk.nashorn.internal.ir.LiteralNode; |
| import jdk.nashorn.internal.runtime.JSType; |
| import jdk.nashorn.internal.runtime.Property; |
| import jdk.nashorn.internal.runtime.PropertyMap; |
| import jdk.nashorn.internal.runtime.ScriptObject; |
| import jdk.nashorn.internal.runtime.ScriptRuntime; |
| import jdk.nashorn.internal.runtime.arrays.ArrayData; |
| import jdk.nashorn.internal.runtime.arrays.ArrayIndex; |
| import jdk.nashorn.internal.scripts.JD; |
| import jdk.nashorn.internal.scripts.JO; |
| |
| /** |
| * An object creator that uses spill properties. |
| */ |
| public final class SpillObjectCreator extends ObjectCreator<Expression> { |
| |
| /** |
| * Constructor |
| * |
| * @param codegen code generator |
| * @param tuples tuples for key, symbol, value |
| */ |
| SpillObjectCreator(final CodeGenerator codegen, final List<MapTuple<Expression>> tuples) { |
| super(codegen, tuples, false, false); |
| makeMap(); |
| } |
| |
| @Override |
| public void createObject(final MethodEmitter method) { |
| assert !isScope() : "spill scope objects are not currently supported"; |
| |
| final int length = tuples.size(); |
| final boolean dualFields = codegen.useDualFields(); |
| final int spillLength = ScriptObject.spillAllocationLength(length); |
| final long[] jpresetValues = dualFields ? new long[spillLength] : null; |
| final Object[] opresetValues = new Object[spillLength]; |
| final Class<?> objectClass = getAllocatorClass(); |
| ArrayData arrayData = ArrayData.allocate(ScriptRuntime.EMPTY_ARRAY); |
| |
| // Compute constant property values |
| int pos = 0; |
| for (final MapTuple<Expression> tuple : tuples) { |
| final String key = tuple.key; |
| final Expression value = tuple.value; |
| |
| //this is a nop of tuple.key isn't e.g. "apply" or another special name |
| method.invalidateSpecialName(tuple.key); |
| |
| if (value != null) { |
| final Object constantValue = LiteralNode.objectAsConstant(value); |
| if (constantValue != LiteralNode.POSTSET_MARKER) { |
| final Property property = propertyMap.findProperty(key); |
| if (property != null) { |
| // normal property key |
| property.setType(dualFields ? JSType.unboxedFieldType(constantValue) : Object.class); |
| final int slot = property.getSlot(); |
| if (dualFields && constantValue instanceof Number) { |
| jpresetValues[slot] = ObjectClassGenerator.pack((Number)constantValue); |
| } else { |
| opresetValues[slot] = constantValue; |
| } |
| } else { |
| // array index key |
| final long oldLength = arrayData.length(); |
| final int index = ArrayIndex.getArrayIndex(key); |
| final long longIndex = ArrayIndex.toLongIndex(index); |
| |
| assert ArrayIndex.isValidArrayIndex(index); |
| |
| if (longIndex >= oldLength) { |
| arrayData = arrayData.ensure(longIndex); |
| } |
| |
| //avoid blowing up the array if we can |
| if (constantValue instanceof Integer) { |
| arrayData = arrayData.set(index, ((Integer)constantValue).intValue(), false); |
| } else if (constantValue instanceof Double) { |
| arrayData = arrayData.set(index, ((Double)constantValue).doubleValue(), false); |
| } else { |
| arrayData = arrayData.set(index, constantValue, false); |
| } |
| |
| if (longIndex > oldLength) { |
| arrayData = arrayData.delete(oldLength, longIndex - 1); |
| } |
| } |
| } |
| } |
| pos++; |
| } |
| |
| // create object and invoke constructor |
| method._new(objectClass).dup(); |
| codegen.loadConstant(propertyMap); |
| |
| // load primitive value spill array |
| if (dualFields) { |
| codegen.loadConstant(jpresetValues); |
| } else { |
| method.loadNull(); |
| } |
| // load object value spill array |
| codegen.loadConstant(opresetValues); |
| |
| // instantiate the script object with spill objects |
| method.invoke(constructorNoLookup(objectClass, PropertyMap.class, long[].class, Object[].class)); |
| |
| // Set prefix array data if any |
| if (arrayData.length() > 0) { |
| method.dup(); |
| codegen.loadConstant(arrayData); |
| method.invoke(virtualCallNoLookup(ScriptObject.class, "setArray", void.class, ArrayData.class)); |
| } |
| } |
| |
| @Override |
| public void populateRange(final MethodEmitter method, final Type objectType, final int objectSlot, final int start, final int end) { |
| final int callSiteFlags = codegen.getCallSiteFlags(); |
| method.load(objectType, objectSlot); |
| |
| // set postfix values |
| for (int i = start; i < end; i++) { |
| final MapTuple<Expression> tuple = tuples.get(i); |
| |
| if (LiteralNode.isConstant(tuple.value)) { |
| continue; |
| } |
| |
| final Property property = propertyMap.findProperty(tuple.key); |
| |
| if (property == null) { |
| final int index = ArrayIndex.getArrayIndex(tuple.key); |
| assert ArrayIndex.isValidArrayIndex(index); |
| method.dup(); |
| loadIndex(method, ArrayIndex.toLongIndex(index)); |
| loadTuple(method, tuple, false); |
| method.dynamicSetIndex(callSiteFlags); |
| } else { |
| assert property.getKey() instanceof String; // symbol keys not yet supported in object literals |
| method.dup(); |
| loadTuple(method, tuple, false); |
| method.dynamicSet((String) property.getKey(), codegen.getCallSiteFlags(), false); |
| } |
| } |
| } |
| |
| @Override |
| protected PropertyMap makeMap() { |
| assert propertyMap == null : "property map already initialized"; |
| final Class<? extends ScriptObject> clazz = getAllocatorClass(); |
| propertyMap = new MapCreator<>(clazz, tuples).makeSpillMap(false, codegen.useDualFields()); |
| return propertyMap; |
| } |
| |
| @Override |
| protected void loadValue(final Expression expr, final Type type) { |
| // Use generic type in order to avoid conversion between object types |
| codegen.loadExpressionAsType(expr, Type.generic(type)); |
| } |
| |
| @Override |
| protected Class<? extends ScriptObject> getAllocatorClass() { |
| return codegen.useDualFields() ? JD.class : JO.class; |
| } |
| } |