Mercurial > hg > icedtea9-forest > nashorn
view src/jdk/nashorn/internal/codegen/MapCreator.java @ 661:ae5f2130c3b9
8027700: function redeclaration checks missing for declaration binding instantiation
Reviewed-by: jlaskey, lagergren
author | sundar |
---|---|
date | Fri, 01 Nov 2013 19:54:48 +0530 |
parents | 0ad00ae4fec6 |
children |
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/* * 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.runtime.arrays.ArrayIndex.getArrayIndex; import static jdk.nashorn.internal.runtime.arrays.ArrayIndex.isValidArrayIndex; import java.util.ArrayList; import java.util.List; import jdk.nashorn.internal.ir.Symbol; import jdk.nashorn.internal.runtime.AccessorProperty; import jdk.nashorn.internal.runtime.Property; import jdk.nashorn.internal.runtime.PropertyMap; /** * Class that creates PropertyMap sent to script object constructors. */ public class MapCreator { /** Object structure for objects associated with this map */ private final Class<?> structure; /** key set for object map */ final List<String> keys; /** corresponding symbol set for object map */ final List<Symbol> symbols; /** * Constructor * * @param structure structure to generate map for (a JO subclass) * @param keys list of keys for map * @param symbols list of symbols for map */ MapCreator(final Class<?> structure, final List<String> keys, final List<Symbol> symbols) { this.structure = structure; this.keys = keys; this.symbols = symbols; } /** * Constructs a property map based on a set of fields. * * @param hasArguments does the created object have an "arguments" property * @param fieldCount Number of fields in use. * @param fieldMaximum Number of fields available. * * @return New map populated with accessor properties. */ PropertyMap makeFieldMap(final boolean hasArguments, final int fieldCount, final int fieldMaximum) { final List<Property> properties = new ArrayList<>(); assert keys != null; for (int i = 0, length = keys.size(); i < length; i++) { final String key = keys.get(i); final Symbol symbol = symbols.get(i); if (symbol != null && !isValidArrayIndex(getArrayIndex(key))) { properties.add(new AccessorProperty(key, getPropertyFlags(symbol, hasArguments), structure, symbol.getFieldIndex())); } } return PropertyMap.newMap(properties, fieldCount, fieldMaximum, 0); } PropertyMap makeSpillMap(final boolean hasArguments) { final List<Property> properties = new ArrayList<>(); int spillIndex = 0; assert keys != null; for (int i = 0, length = keys.size(); i < length; i++) { final String key = keys.get(i); final Symbol symbol = symbols.get(i); if (symbol != null && !isValidArrayIndex(getArrayIndex(key))) { properties.add(new AccessorProperty(key, getPropertyFlags(symbol, hasArguments), spillIndex++)); } } return PropertyMap.newMap(properties, 0, 0, spillIndex); } /** * Compute property flags given local state of a field. May be overridden and extended, * * @param symbol symbol to check * @param hasArguments does the created object have an "arguments" property * * @return flags to use for fields */ protected int getPropertyFlags(final Symbol symbol, final boolean hasArguments) { int flags = 0; if (symbol.isParam()) { flags |= Property.IS_ALWAYS_OBJECT | Property.IS_PARAMETER; } if (hasArguments) { flags |= Property.IS_ALWAYS_OBJECT | Property.HAS_ARGUMENTS; } if (symbol.isScope()) { flags |= Property.NOT_CONFIGURABLE; } if (symbol.canBePrimitive()) { flags |= Property.CAN_BE_PRIMITIVE; } if (symbol.canBeUndefined()) { flags |= Property.CAN_BE_UNDEFINED; } if (symbol.isFunctionDeclaration()) { flags |= Property.IS_FUNCTION_DECLARATION; } return flags; } }