/
ArrayLiteralNode.java
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/
ArrayLiteralNode.java
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package som.interpreter.nodes.literals;
import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.instrumentation.Tag;
import com.oracle.truffle.api.source.SourceSection;
import som.interpreter.nodes.ExpressionNode;
import som.primitives.arrays.ArraySetAllStrategy;
import som.vm.constants.Classes;
import som.vmobjects.SArray;
import som.vmobjects.SArray.SMutableArray;
import tools.dym.Tags.NewArray;
public abstract class ArrayLiteralNode extends LiteralNode {
public static ArrayLiteralNode create(final ExpressionNode[] exprs,
final SourceSection source) {
ArrayLiteralNode lit;
if (exprs.length == 0) {
lit = new EmptyArrayNode();
} else {
lit = new Uninit(exprs);
}
return lit.initialize(source);
}
@Children protected final ExpressionNode[] expressions;
protected ArrayLiteralNode(final ExpressionNode[] expressions) {
this.expressions = expressions;
}
@Override
public boolean hasTag(final Class<? extends Tag> tag) {
if (tag == NewArray.class) {
return true;
} else {
return super.hasTag(tag);
}
}
private static final class EmptyArrayNode extends ArrayLiteralNode {
private EmptyArrayNode() {
super(null);
}
@Override
public Object executeGeneric(final VirtualFrame frame) {
return new SMutableArray(0, Classes.arrayClass);
}
}
private static final class Uninit extends ArrayLiteralNode {
private Uninit(final ExpressionNode[] expressions) {
super(expressions);
}
@Override
public Object executeGeneric(final VirtualFrame frame) {
Object storage =
ArraySetAllStrategy.evaluateFirstDetermineStorageAndEvaluateRest(frame, expressions);
SMutableArray arr = new SMutableArray(storage, Classes.arrayClass);
specialize(arr);
return arr;
}
private void specialize(final SMutableArray storage) {
LiteralNode node;
if (storage.isBooleanType()) {
node = new Booleans(expressions);
} else if (storage.isDoubleType()) {
node = new Doubles(expressions);
} else if (storage.isEmptyType()) {
node = new Empty(expressions);
} else if (storage.isLongType()) {
node = new Longs(expressions);
} else {
assert storage.isObjectType() : "Partially empty is not supported yet. Should be simple to add.";
node = new Objects(expressions);
}
replace(node.initialize(sourceSection));
}
}
private abstract static class Specialized extends ArrayLiteralNode {
private Specialized(final ExpressionNode[] expressions) {
super(expressions);
}
protected abstract Object executeSpecialized(VirtualFrame frame);
protected abstract boolean expectedType(SMutableArray arr);
@Override
public final Object executeGeneric(final VirtualFrame frame) {
Object storage = executeSpecialized(frame);
SMutableArray result = new SMutableArray(storage, Classes.arrayClass);
if (!expectedType(result)) {
CompilerDirectives.transferToInterpreterAndInvalidate();
replace(new Objects(expressions).initialize(sourceSection));
}
return result;
}
}
private static final class Booleans extends Specialized {
private Booleans(final ExpressionNode[] expressions) {
super(expressions);
}
@Override
protected Object executeSpecialized(final VirtualFrame frame) {
return ArraySetAllStrategy.evalForRemaining(frame, expressions,
new boolean[expressions.length], SArray.FIRST_IDX);
}
@Override
protected boolean expectedType(final SMutableArray arr) {
return arr.isBooleanType();
}
}
private static final class Doubles extends Specialized {
private Doubles(final ExpressionNode[] expressions) {
super(expressions);
}
@Override
protected Object executeSpecialized(final VirtualFrame frame) {
return ArraySetAllStrategy.evalForRemaining(frame, expressions,
new double[expressions.length], SArray.FIRST_IDX);
}
@Override
protected boolean expectedType(final SMutableArray arr) {
return arr.isDoubleType();
}
}
private static final class Longs extends Specialized {
private Longs(final ExpressionNode[] expressions) {
super(expressions);
}
@Override
protected Object executeSpecialized(final VirtualFrame frame) {
return ArraySetAllStrategy.evalForRemaining(frame, expressions,
new long[expressions.length], SArray.FIRST_IDX);
}
@Override
protected boolean expectedType(final SMutableArray arr) {
return arr.isLongType();
}
}
private static final class Empty extends Specialized {
private Empty(final ExpressionNode[] expressions) {
super(expressions);
}
@Override
protected Object executeSpecialized(final VirtualFrame frame) {
return ArraySetAllStrategy.evalForRemainingNils(frame, expressions,
SArray.FIRST_IDX);
}
@Override
protected boolean expectedType(final SMutableArray arr) {
return arr.isEmptyType();
}
}
private static final class Objects extends Specialized {
private Objects(final ExpressionNode[] expressions) {
super(expressions);
}
@Override
protected Object executeSpecialized(final VirtualFrame frame) {
return ArraySetAllStrategy.evalForRemaining(frame, expressions,
new Object[expressions.length], SArray.FIRST_IDX);
}
@Override
protected boolean expectedType(final SMutableArray arr) {
return true;
}
}
}