예제 #1
0
파일: DimNames.java 프로젝트: chumer/fastr
@RBuiltin(
    name = "dimnames",
    kind = PRIMITIVE,
    parameterNames = {"x"},
    dispatch = INTERNAL_GENERIC)
public abstract class DimNames extends RBuiltinNode {

  private final RAttributeProfiles attrProfiles = RAttributeProfiles.create();
  private final ConditionProfile nullProfile = ConditionProfile.createBinaryProfile();
  private final BranchProfile dataframeProfile = BranchProfile.create();
  private final BranchProfile factorProfile = BranchProfile.create();
  private final BranchProfile otherProfile = BranchProfile.create();

  @Specialization
  protected RNull getDimNames(@SuppressWarnings("unused") RNull operand) {
    controlVisibility();
    return RNull.instance;
  }

  @Specialization
  protected Object getDimNames(RAbstractContainer container) {
    controlVisibility();
    RList names;
    if (container instanceof RDataFrame) {
      dataframeProfile.enter();
      names = ((RDataFrame) container).getVector().getDimNames();
    } else if (container instanceof RFactor) {
      factorProfile.enter();
      names = ((RFactor) container).getVector().getDimNames();
    } else {
      otherProfile.enter();
      names = container.getDimNames(attrProfiles);
    }
    return nullProfile.profile(names == null) ? RNull.instance : names;
  }
}
예제 #2
0
/**
 * Simple attribute access node that specializes on the position at which the attribute was found
 * last time.
 */
public abstract class UnaryCopyAttributesNode extends RBaseNode {

  protected final boolean copyAllAttributes;

  protected final RAttributeProfiles attrSourceProfiles = RAttributeProfiles.create();

  protected UnaryCopyAttributesNode(boolean copyAllAttributes) {
    this.copyAllAttributes = copyAllAttributes;
  }

  public abstract RAbstractVector execute(RAbstractVector target, RAbstractVector left);

  protected boolean containsMetadata(RAbstractVector vector, RAttributeProfiles attrProfiles) {
    return vector instanceof RVector && vector.hasDimensions()
        || (copyAllAttributes && vector.getAttributes() != null)
        || vector.getNames(attrProfiles) != null
        || vector.getDimNames(attrProfiles) != null;
  }

  @SuppressWarnings("unused")
  @Specialization(guards = "!containsMetadata(source, attrSourceProfiles)")
  public RAbstractVector copyNoMetadata(RAbstractVector target, RAbstractVector source) {
    return target;
  }

  @SuppressWarnings("unused")
  @Specialization(guards = {"copyAllAttributes", "target == source"})
  public RAbstractVector copySameVector(RAbstractVector target, RAbstractVector source) {
    return target;
  }

  @Specialization(
      guards = {
        "!copyAllAttributes || target != source",
        "containsMetadata(source, attrSourceProfiles)"
      })
  public RAbstractVector copySameLength(
      RAbstractVector target,
      RAbstractVector source, //
      @Cached("create()") CopyOfRegAttributesNode copyOfReg, //
      @Cached("createDim()") RemoveAttributeNode removeDim, //
      @Cached("createDimNames()") RemoveAttributeNode removeDimNames, //
      @Cached("create()") InitAttributesNode initAttributes, //
      @Cached("createNames()") PutAttributeNode putNames, //
      @Cached("createDim()") PutAttributeNode putDim, //
      @Cached("createBinaryProfile()") ConditionProfile noDimensions, //
      @Cached("createBinaryProfile()") ConditionProfile hasNamesSource, //
      @Cached("createBinaryProfile()") ConditionProfile hasDimNames) {
    RVector result = target.materialize();

    if (copyAllAttributes) {
      copyOfReg.execute(source, result);
    }

    int[] newDimensions = source.getDimensions();
    if (noDimensions.profile(newDimensions == null)) {
      RAttributes attributes = result.getAttributes();
      if (attributes != null) {
        removeDim.execute(attributes);
        removeDimNames.execute(attributes);
        result.setInternalDimNames(null);
      }
      result.setInternalDimensions(null);

      RStringVector vecNames = source.getNames(attrSourceProfiles);
      if (hasNamesSource.profile(vecNames != null)) {
        putNames.execute(initAttributes.execute(result), vecNames);
        result.setInternalNames(vecNames);
        return result;
      }
      return result;
    }

    putDim.execute(
        initAttributes.execute(result),
        RDataFactory.createIntVector(newDimensions, RDataFactory.COMPLETE_VECTOR));
    result.setInternalDimensions(newDimensions);

    RList newDimNames = source.getDimNames(attrSourceProfiles);
    if (hasDimNames.profile(newDimNames != null)) {
      result.getAttributes().put(RRuntime.DIMNAMES_ATTR_KEY, newDimNames);
      newDimNames.elementNamePrefix = RRuntime.DIMNAMES_LIST_ELEMENT_NAME_PREFIX;
      result.setInternalDimNames(newDimNames);
      return result;
    }
    return result;
  }
}