/*
* 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
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*/
package jdk.nashorn.internal.ir;
import jdk.nashorn.internal.ir.annotations.Immutable;
import jdk.nashorn.internal.ir.visitor.NodeVisitor;
/**
* IR representation of an object literal property.
*/
@Immutable
public final class PropertyNode extends Node {
private static final long serialVersionUID = 1L;
/** Property key. */
private final Expression key;
/** Property value. */
private final Expression value;
/** Property getter. */
private final FunctionNode getter;
/** Property getter. */
private final FunctionNode setter;
/** static property flag */
private final boolean isStatic;
/** Computed property flag */
private final boolean computed;
/**
* Constructor
*
* @param token token
* @param finish finish
* @param key the key of this property
* @param value the value of this property
* @param getter getter function body
* @param setter setter function body
* @param isStatic is this a static property?
* @param computed is this a computed property?
*/
public PropertyNode(final long token, final int finish, final Expression key, final Expression value, final FunctionNode getter, final FunctionNode setter, final boolean isStatic, final boolean computed) {
super(token, finish);
this.key = key;
this.value = value;
this.getter = getter;
this.setter = setter;
this.isStatic = isStatic;
this.computed = computed;
}
private PropertyNode(final PropertyNode propertyNode, final Expression key, final Expression value, final FunctionNode getter, final FunctionNode setter, final boolean isStatic, final boolean computed) {
super(propertyNode);
this.key = key;
this.value = value;
this.getter = getter;
this.setter = setter;
this.isStatic = isStatic;
this.computed = computed;
}
/**
* Get the name of the property key, or {@code null} if key is a computed name.
* @return key name or null
*/
public String getKeyName() {
return !computed && key instanceof PropertyKey ? ((PropertyKey) key).getPropertyName() : null;
}
@Override
public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {
if (visitor.enterPropertyNode(this)) {
return visitor.leavePropertyNode(
setKey((Expression) key.accept(visitor)).
setValue(value == null ? null : (Expression)value.accept(visitor)).
setGetter(getter == null ? null : (FunctionNode)getter.accept(visitor)).
setSetter(setter == null ? null : (FunctionNode)setter.accept(visitor)));
}
return this;
}
@Override
public void toString(final StringBuilder sb, final boolean printType) {
if (value instanceof FunctionNode && ((FunctionNode)value).getIdent() != null) {
value.toString(sb);
}
if (value != null) {
((Node)key).toString(sb, printType);
sb.append(": ");
value.toString(sb, printType);
}
if (getter != null) {
sb.append(' ');
getter.toString(sb, printType);
}
if (setter != null) {
sb.append(' ');
setter.toString(sb, printType);
}
}
/**
* Get the getter for this property
* @return getter or null if none exists
*/
public FunctionNode getGetter() {
return getter;
}
/**
* Set the getter of this property, null if none
* @param getter getter
* @return same node or new node if state changed
*/
public PropertyNode setGetter(final FunctionNode getter) {
if (this.getter == getter) {
return this;
}
return new PropertyNode(this, key, value, getter, setter, isStatic, computed);
}
/**
* Return the key for this property node
* @return the key
*/
public Expression getKey() {
return key;
}
private PropertyNode setKey(final Expression key) {
if (this.key == key) {
return this;
}
return new PropertyNode(this, key, value, getter, setter, isStatic, computed);
}
/**
* Get the setter for this property
* @return setter or null if none exists
*/
public FunctionNode getSetter() {
return setter;
}
/**
* Set the setter for this property, null if none
* @param setter setter
* @return same node or new node if state changed
*/
public PropertyNode setSetter(final FunctionNode setter) {
if (this.setter == setter) {
return this;
}
return new PropertyNode(this, key, value, getter, setter, isStatic, computed);
}
/**
* Get the value of this property
* @return property value
*/
public Expression getValue() {
return value;
}
/**
* Set the value of this property
* @param value new value
* @return same node or new node if state changed
*/
public PropertyNode setValue(final Expression value) {
if (this.value == value) {
return this;
}
return new PropertyNode(this, key, value, getter, setter, isStatic, computed);
}
/**
* Returns true if this is a static property.
*
* @return true if static flag is set
*/
public boolean isStatic() {
return isStatic;
}
/**
* Returns true if this is a computed property.
*
* @return true if the computed flag is set
*/
public boolean isComputed() {
return computed;
}
}