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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
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package jdk.nashorn.internal.ir;

import java.io.IOException;
import java.io.NotSerializableException;
import java.io.ObjectOutputStream;
import jdk.nashorn.internal.codegen.CompileUnit;
import jdk.nashorn.internal.ir.annotations.Immutable;
import jdk.nashorn.internal.ir.visitor.NodeVisitor;

Node indicating code is split across classes.
/** * Node indicating code is split across classes. */
@Immutable public class SplitNode extends LexicalContextStatement implements CompileUnitHolder { private static final long serialVersionUID = 1L;
Split node method name.
/** Split node method name. */
private final String name;
Compilation unit.
/** Compilation unit. */
private final CompileUnit compileUnit;
Body of split code.
/** Body of split code. */
private final Block body;
Constructor
Params:
  • name – name of split node
  • body – body of split code
  • compileUnit – compile unit to use for the body
/** * Constructor * * @param name name of split node * @param body body of split code * @param compileUnit compile unit to use for the body */
public SplitNode(final String name, final Block body, final CompileUnit compileUnit) { super(body.getFirstStatementLineNumber(), body.getToken(), body.getFinish()); this.name = name; this.body = body; this.compileUnit = compileUnit; } private SplitNode(final SplitNode splitNode, final Block body, final CompileUnit compileUnit) { super(splitNode); this.name = splitNode.name; this.body = body; this.compileUnit = compileUnit; }
Get the body for this split node - i.e. the actual code it encloses
Returns:body for split node
/** * Get the body for this split node - i.e. the actual code it encloses * @return body for split node */
public Block getBody() { return body; } private SplitNode setBody(final LexicalContext lc, final Block body) { if (this.body == body) { return this; } return Node.replaceInLexicalContext(lc, this, new SplitNode(this, body, compileUnit)); } @Override public Node accept(final LexicalContext lc, final NodeVisitor<? extends LexicalContext> visitor) { if (visitor.enterSplitNode(this)) { return visitor.leaveSplitNode(setBody(lc, (Block)body.accept(visitor))); } return this; } @Override public void toString(final StringBuilder sb, final boolean printType) { sb.append("<split>("); sb.append(compileUnit.getClass().getSimpleName()); sb.append(") "); body.toString(sb, printType); }
Get the name for this split node
Returns:name
/** * Get the name for this split node * @return name */
public String getName() { return name; }
Get the compile unit for this split node
Returns:compile unit
/** * Get the compile unit for this split node * @return compile unit */
@Override public CompileUnit getCompileUnit() { return compileUnit; }
Set the compile unit for this split node
Params:
  • lc – lexical context
  • compileUnit – compile unit
Returns:new node if changed, otherwise same node
/** * Set the compile unit for this split node * @param lc lexical context * @param compileUnit compile unit * @return new node if changed, otherwise same node */
public SplitNode setCompileUnit(final LexicalContext lc, final CompileUnit compileUnit) { if (this.compileUnit == compileUnit) { return this; } return Node.replaceInLexicalContext(lc, this, new SplitNode(this, body, compileUnit)); } private void writeObject(final ObjectOutputStream out) throws IOException { // We are only serializing the AST after we run SplitIntoFunctions; no SplitNodes can remain for the // serialization. throw new NotSerializableException(getClass().getName()); } }