| /* |
| * 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.ir; |
| |
| import jdk.nashorn.internal.codegen.types.Type; |
| import jdk.nashorn.internal.ir.annotations.Immutable; |
| import jdk.nashorn.internal.ir.visitor.NodeVisitor; |
| import jdk.nashorn.internal.runtime.Source; |
| |
| /** |
| * IR representation of a property access (period operator.) |
| */ |
| @Immutable |
| public final class AccessNode extends BaseNode { |
| /** Property ident. */ |
| private final IdentNode property; |
| |
| /** |
| * Constructor |
| * |
| * @param source source code |
| * @param token token |
| * @param finish finish |
| * @param base base node |
| * @param property property |
| */ |
| public AccessNode(final Source source, final long token, final int finish, final Node base, final IdentNode property) { |
| super(source, token, finish, base, false, false); |
| this.property = property.setIsPropertyName(); |
| } |
| |
| private AccessNode(final AccessNode accessNode, final Node base, final IdentNode property, final boolean isFunction, final boolean hasCallSiteType) { |
| super(accessNode, base, isFunction, hasCallSiteType); |
| this.property = property; |
| } |
| |
| /** |
| * Assist in IR navigation. |
| * @param visitor IR navigating visitor. |
| */ |
| @Override |
| public Node accept(final NodeVisitor visitor) { |
| if (visitor.enterAccessNode(this)) { |
| return visitor.leaveAccessNode( |
| setBase(base.accept(visitor)). |
| setProperty((IdentNode)property.accept(visitor))); |
| } |
| return this; |
| } |
| |
| @Override |
| public void toString(final StringBuilder sb) { |
| final boolean needsParen = tokenType().needsParens(getBase().tokenType(), true); |
| |
| if (hasCallSiteType()) { |
| sb.append('{'); |
| final String desc = getType().getDescriptor(); |
| sb.append(desc.charAt(desc.length() - 1) == ';' ? "O" : getType().getDescriptor()); |
| sb.append('}'); |
| } |
| |
| if (needsParen) { |
| sb.append('('); |
| } |
| |
| base.toString(sb); |
| |
| if (needsParen) { |
| sb.append(')'); |
| } |
| sb.append('.'); |
| |
| sb.append(property.getName()); |
| } |
| |
| /** |
| * Get the property |
| * |
| * @return the property IdentNode |
| */ |
| public IdentNode getProperty() { |
| return property; |
| } |
| |
| private AccessNode setBase(final Node base) { |
| if (this.base == base) { |
| return this; |
| } |
| return new AccessNode(this, base, property, isFunction(), hasCallSiteType()); |
| } |
| |
| |
| private AccessNode setProperty(final IdentNode property) { |
| if (this.property == property) { |
| return this; |
| } |
| return new AccessNode(this, base, property, isFunction(), hasCallSiteType()); |
| } |
| |
| @Override |
| public AccessNode setType(final Type type) { |
| logTypeChange(type); |
| getSymbol().setTypeOverride(type); //always a temp so this is fine. |
| return new AccessNode(this, base, property.setType(type), isFunction(), hasCallSiteType()); |
| } |
| |
| @Override |
| public BaseNode setIsFunction() { |
| if (isFunction()) { |
| return this; |
| } |
| return new AccessNode(this, base, property, true, hasCallSiteType()); |
| } |
| |
| } |