src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/AccessNode.java

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  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.nashorn.internal.ir;
  27 
  28 import jdk.nashorn.internal.codegen.types.Type;
  29 import jdk.nashorn.internal.ir.annotations.Immutable;
  30 import jdk.nashorn.internal.ir.visitor.NodeVisitor;


  31 
  32 /**
  33  * IR representation of a property access (period operator.)
  34  */
  35 @Immutable
  36 public final class AccessNode extends BaseNode {
  37     private static final long serialVersionUID = 1L;
  38 
  39     /** Property name. */
  40     private final String property;
  41 
  42     /**
  43      * Constructor
  44      *
  45      * @param token     token
  46      * @param finish    finish
  47      * @param base      base node
  48      * @param property  property
  49      */
  50     public AccessNode(final long token, final int finish, final Expression base, final String property) {


  82             sb.append('(');
  83         }
  84 
  85         base.toString(sb, printType);
  86 
  87         if (needsParen) {
  88             sb.append(')');
  89         }
  90         sb.append('.');
  91 
  92         sb.append(property);
  93     }
  94 
  95     /**
  96      * Get the property name
  97      *
  98      * @return the property name
  99      */
 100     public String getProperty() {
 101         return property;








 102     }
 103 
 104     private AccessNode setBase(final Expression base) {
 105         if (this.base == base) {
 106             return this;
 107         }
 108         return new AccessNode(this, base, property, isFunction(), type, programPoint);
 109     }
 110 
 111     @Override
 112     public AccessNode setType(final Type type) {
 113         if (this.type == type) {
 114             return this;
 115         }
 116         return new AccessNode(this, base, property, isFunction(), type, programPoint);
 117     }
 118 
 119     @Override
 120     public AccessNode setProgramPoint(final int programPoint) {
 121         if (this.programPoint == programPoint) {


  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.nashorn.internal.ir;
  27 
  28 import jdk.nashorn.internal.codegen.types.Type;
  29 import jdk.nashorn.internal.ir.annotations.Immutable;
  30 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
  31 import jdk.nashorn.internal.parser.Token;
  32 import jdk.nashorn.internal.parser.TokenType;
  33 
  34 /**
  35  * IR representation of a property access (period operator.)
  36  */
  37 @Immutable
  38 public final class AccessNode extends BaseNode {
  39     private static final long serialVersionUID = 1L;
  40 
  41     /** Property name. */
  42     private final String property;
  43 
  44     /**
  45      * Constructor
  46      *
  47      * @param token     token
  48      * @param finish    finish
  49      * @param base      base node
  50      * @param property  property
  51      */
  52     public AccessNode(final long token, final int finish, final Expression base, final String property) {


  84             sb.append('(');
  85         }
  86 
  87         base.toString(sb, printType);
  88 
  89         if (needsParen) {
  90             sb.append(')');
  91         }
  92         sb.append('.');
  93 
  94         sb.append(property);
  95     }
  96 
  97     /**
  98      * Get the property name
  99      *
 100      * @return the property name
 101      */
 102     public String getProperty() {
 103         return property;
 104     }
 105 
 106     /**
 107      * Return true if this node represents an index operation normally represented as {@link IndexNode}.
 108      * @return true if an index access.
 109      */
 110     public boolean isIndex() {
 111         return Token.descType(getToken()) == TokenType.LBRACKET;
 112     }
 113 
 114     private AccessNode setBase(final Expression base) {
 115         if (this.base == base) {
 116             return this;
 117         }
 118         return new AccessNode(this, base, property, isFunction(), type, programPoint);
 119     }
 120 
 121     @Override
 122     public AccessNode setType(final Type type) {
 123         if (this.type == type) {
 124             return this;
 125         }
 126         return new AccessNode(this, base, property, isFunction(), type, programPoint);
 127     }
 128 
 129     @Override
 130     public AccessNode setProgramPoint(final int programPoint) {
 131         if (this.programPoint == programPoint) {