abstract class PositionCheckNode extends Node {
protected final Class<?> positionClass;
protected final int dimensionIndex;
protected final int numDimensions;
protected final VectorLengthProfile positionLengthProfile = VectorLengthProfile.create();
protected final BranchProfile error = BranchProfile.create();
protected final boolean replace;
protected final RType containerType;
@Child private PositionCastNode castNode;
@Child private RLengthNode positionLengthNode = RLengthNode.create();
@Child private PositionCharacterLookupNode characterLookup;
PositionCheckNode(
ElementAccessMode mode,
RType containerType,
Object positionValue,
int dimensionIndex,
int numDimensions,
boolean exact,
boolean replace) {
this.positionClass = positionValue.getClass();
this.dimensionIndex = dimensionIndex;
this.numDimensions = numDimensions;
this.replace = replace;
this.containerType = containerType;
this.castNode = PositionCastNode.create(mode, replace);
if (positionValue instanceof String || positionValue instanceof RAbstractStringVector) {
boolean useNAForNotFound = !replace && isListLike(containerType) && mode.isSubscript();
characterLookup =
new PositionCharacterLookupNode(
mode, numDimensions, dimensionIndex, useNAForNotFound, exact);
}
}
protected static boolean isListLike(RType type) {
switch (type) {
case Language:
case DataFrame:
case Expression:
case PairList:
case List:
return true;
}
return false;
}
public boolean isIgnoreDimension() {
return positionClass == RMissing.class;
}
public Class<?> getPositionClass() {
return positionClass;
}
public final boolean isSupported(Object object) {
return object.getClass() == positionClass;
}
public static PositionCheckNode createNode(
ElementAccessMode mode,
RType containerType,
Object position,
int positionIndex,
int numDimensions,
boolean exact,
boolean replace,
boolean recursive) {
if (mode.isSubset()) {
return PositionCheckSubsetNodeGen.create(
mode, containerType, position, positionIndex, numDimensions, exact, replace);
} else {
return PositionCheckSubscriptNodeGen.create(
mode, containerType, position, positionIndex, numDimensions, exact, replace, recursive);
}
}
protected boolean isMultiDimension() {
return numDimensions > 1;
}
public final Object execute(
PositionProfile profile,
RAbstractContainer vector,
int[] vectorDimensions,
int vectorLength,
Object position) {
Object castPosition = castNode.execute(positionClass.cast(position));
int dimensionLength;
if (numDimensions == 1) {
dimensionLength = vectorLength;
} else {
assert vectorDimensions != null;
assert vectorDimensions.length == numDimensions;
dimensionLength = vectorDimensions[dimensionIndex];
}
if (characterLookup != null) {
castPosition =
characterLookup.execute(vector, (RAbstractStringVector) castPosition, dimensionLength);
}
RTypedValue positionVector = (RTypedValue) profilePosition(castPosition);
int positionLength;
if (positionVector instanceof RMissing) {
positionLength = -1;
} else {
positionLength =
positionLengthProfile.profile(((RAbstractVector) positionVector).getLength());
}
assert isValidCastedType(positionVector)
: "result type of a position cast node must be integer or logical";
return execute(profile, dimensionLength, positionVector, positionLength);
}
private final ValueProfile castedValue = ValueProfile.createClassProfile();
Object profilePosition(Object positionVector) {
return castedValue.profile(positionVector);
}
private static boolean isValidCastedType(RTypedValue positionVector) {
RType type = positionVector.getRType();
return type == RType.Integer
|| type == RType.Logical
|| type == RType.Character
|| type == RType.Double
|| type == RType.Null;
}
public abstract Object execute(
PositionProfile statistics, int dimensionLength, Object position, int positionLength);
}