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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
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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.codegen;
import java.util.ArrayList;
import java.util.List;
import jdk.nashorn.internal.ir.CompileUnitHolder;
import jdk.nashorn.internal.ir.FunctionNode;
import jdk.nashorn.internal.ir.LiteralNode;
import jdk.nashorn.internal.ir.LiteralNode.ArrayLiteralNode;
import jdk.nashorn.internal.ir.Node;
import jdk.nashorn.internal.ir.ObjectNode;
import jdk.nashorn.internal.ir.Splittable;
import jdk.nashorn.internal.ir.visitor.SimpleNodeVisitor;
/**
* Base class for a node visitor that replaces {@link CompileUnit}s in {@link CompileUnitHolder}s.
*/
abstract class ReplaceCompileUnits extends SimpleNodeVisitor {
/**
* Override to provide a replacement for an old compile unit.
* @param oldUnit the old compile unit to replace
* @return the compile unit's replacement.
*/
abstract CompileUnit getReplacement(final CompileUnit oldUnit);
CompileUnit getExistingReplacement(final CompileUnitHolder node) {
final CompileUnit oldUnit = node.getCompileUnit();
assert oldUnit != null;
final CompileUnit newUnit = getReplacement(oldUnit);
assert newUnit != null;
return newUnit;
}
@Override
public Node leaveFunctionNode(final FunctionNode node) {
return node.setCompileUnit(lc, getExistingReplacement(node));
}
@Override
public Node leaveLiteralNode(final LiteralNode<?> node) {
if (node instanceof ArrayLiteralNode) {
final ArrayLiteralNode aln = (ArrayLiteralNode)node;
if (aln.getSplitRanges() == null) {
return node;
}
final List<Splittable.SplitRange> newArrayUnits = new ArrayList<>();
for (final Splittable.SplitRange au : aln.getSplitRanges()) {
newArrayUnits.add(new Splittable.SplitRange(getExistingReplacement(au), au.getLow(), au.getHigh()));
}
return aln.setSplitRanges(lc, newArrayUnits);
}
return node;
}
@Override
public Node leaveObjectNode(final ObjectNode objectNode) {
final List<Splittable.SplitRange> ranges = objectNode.getSplitRanges();
if (ranges != null) {
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