Exemplo n.º 1
0
    @Override
    public Object execute(Frame frame) {

      RAny lhsVal = (RAny) lhs.execute(frame);
      RAny rowVal = (RAny) rowExpr.execute(frame);
      boolean dropVal =
          dropExpr.executeLogical(frame)
              != RLogical.FALSE; // FIXME: what is the correct execution order of these args?
      int exactVal = exactExpr.executeLogical(frame);

      if (!(lhsVal instanceof RArray)) {
        throw RError.getObjectNotSubsettable(ast, lhsVal.typeOf());
      }
      RArray array = (RArray) lhsVal;
      int[] dim = array.dimensions();
      if (dim == null || dim.length != 2) {
        throw RError.getIncorrectDimensions(getAST());
      }
      int m = dim[0];
      int n = dim[1];

      try {
        int row;
        if (rowVal instanceof ScalarIntImpl) {
          row = ((ScalarIntImpl) rowVal).getInt();
        } else if (rowVal instanceof ScalarDoubleImpl) {
          row = Convert.double2int(((ScalarDoubleImpl) rowVal).getDouble());
        } else {
          throw new UnexpectedResultException(null);
        }
        if (row > n || row <= 0) {
          throw new UnexpectedResultException(null);
        }

        int[] ndim;
        if (dropVal) {
          ndim = null;
        } else {
          ndim = new int[] {1, n};
        }

        // note: also could be lazy here
        RArray res = Utils.createArray(array, n, ndim, null, null); // drop attributes
        int offset = row - 1;
        for (int i = 0; i < n; i++) {
          res.set(i, array.getRef(offset));
          offset += m;
        }
        return res;
      } catch (UnexpectedResultException e) {
        SelectorNode selIExpr = Selector.createSelectorNode(ast, true, rowExpr);
        SelectorNode selJExpr = Selector.createSelectorNode(ast, true, null);
        MatrixRead nn = new MatrixRead(ast, true, lhs, selIExpr, selJExpr, dropExpr, exactExpr);
        replace(nn, "install MatrixRead from MatrixRowSubset");
        Selector selI = selIExpr.executeSelector(rowVal);
        Selector selJ = selJExpr.executeSelector(frame);
        return nn.executeLoop(array, selI, selJ, dropVal, exactVal);
      }
    }
Exemplo n.º 2
0
    @Override public RNode create(ASTNode call, RSymbol[] names, RNode[] exprs) {
        ArgumentInfo ia = check(call, names, exprs);
        boolean product = false;
        if (ia.provided("FUN")) {
            RNode fnode = exprs[ia.position("FUN")];
            if (fnode instanceof Constant) {
                RAny value = ((Constant) fnode).execute(null);
                if (value instanceof RString) {
                    RString str = (RString) value;
                    if (str.size() == 1) {
                        if (str.getString(0).equals("*")) {
                            product = true;
                        }
                    }
                }
            }
        } else {
            product = true;
        }
        if (product) {
            return new MatrixOperation.OuterProduct(call, exprs[ia.position("X")], exprs[ia.position("Y")]);
        }

        int cnArgs = 2 + names.length - 3; // "-2" because both FUN, X, Y
        RSymbol[] cnNames = new RSymbol[cnArgs];
        RNode[] cnExprs = new RNode[cnArgs];
        cnNames[0] = null;
        ValueProvider xArgProvider = new ValueProvider(call);
        cnExprs[0] = xArgProvider;
        ValueProvider yArgProvider = new ValueProvider(call);
        cnExprs[1] = yArgProvider;
        ValueProvider[] constantArgProviders = new ValueProvider[cnArgs];
        int j = 0;
        for (int i = 0; i < names.length; i++) {
            if (ia.position("X") == i || ia.position("Y") == i || ia.position("FUN") == i) {
                continue;
            }
            cnNames[2 + j] = names[i];
            ValueProvider vp = new ValueProvider(call);
            cnExprs[2 + j] = vp;
            constantArgProviders[j] = vp;
            j++;
        }

        RNode funExpr = exprs[ia.position("FUN")];
        final CallableProvider callableProvider = new CallableProvider(funExpr.getAST(), funExpr);
        final RNode callNode = FunctionCall.getFunctionCall(call, callableProvider, cnNames, cnExprs);
        final int posX = ia.position("X");
        final int posY = ia.position("Y");
        final int posFUN = ia.position("FUN");

        return new OuterBuiltIn(call, names, exprs, callNode, callableProvider, xArgProvider, yArgProvider, constantArgProviders) {
            @Override public RAny doBuiltIn(Frame frame, RAny[] args) {
                RAny argx = null;
                RAny argy = null;
                RAny argfun = null;
                int k = 0;
                for (int i = 0; i < args.length; i++) {
                    if (i == posX) {
                        argx = args[i];
                    } else if (i == posY) {
                        argy = args[i];
                    } else if (i == posFUN) {
                        argfun = args[i];
                    } else {
                        constantArgProviders[k].setValue(args[i]);
                        k++;
                    }
                }
                return outer(frame, argx, argy, argfun);
            }
        };
    }
Exemplo n.º 3
0
        public RAny outer(Frame frame, RAny xarg, RAny yarg, RAny farg) {
            // LICENSE: transcribed code from GNU R, which is licensed under GPL

            if (!(xarg instanceof RArray && yarg instanceof RArray)) {
                Utils.nyi("unsupported type");
                return null;
            }

            RArray x = (RArray) xarg;
            RArray y = (RArray) yarg;

            int xsize = x.size();
            int ysize = y.size();

            RArray expy;
            RArray expx;

            if (EAGER) {
                x = x.materialize(); // FIXME: probably unnecessary (both x and y), could be done on-the-fly in the expansion methods
                y = y.materialize();
                if (y instanceof DoubleImpl) {
                    expy = expandYVector((DoubleImpl) y, ysize, xsize);
                } else if (y instanceof IntImpl) {
                    expy = expandYVector((IntImpl) y, ysize, xsize);
                } else {
                    expy = expandYVector(y, ysize, xsize);
                }

                if (xsize > 0) {
                    if (x instanceof DoubleImpl) {
                        expx = expandXVector((DoubleImpl) x, xsize, ysize);
                    } else if (x instanceof IntImpl) {
                        expx = expandXVector((IntImpl) x, xsize, ysize);
                    } else {
                        expx = expandXVector(x, xsize, ysize);
                    }
                } else {
                    expx = x;
                }
            } else {
                if (y instanceof RInt) {
                    expy = lazyExpandYVector((RInt) y, ysize, xsize);
                } else {
                    throw Utils.nyi();
                }
                if (xsize > 0) {
                    if (x instanceof RInt) {
                        expx = lazyExpandXVector((RInt) x, xsize, ysize);
                    } else {
                        throw Utils.nyi();
                    }
                } else {
                    expx = x;
                }
            }

            xArgProvider.setValue(expx);
            yArgProvider.setValue(expy);
            callableProvider.matchAndSet(frame, farg);
            RArray res = (RArray) callNode.execute(frame);

            int[] dimx = x.dimensions();
            int[] dimy = y.dimensions();

            int[] dim;
            if (dimx == null) {
                if (dimy == null) {
                    dim = new int[]{xsize, ysize};
                } else {
                    dim = new int[1 + dimy.length];
                    dim[0] = xsize;
                    System.arraycopy(dimy, 0, dim, 1, dimy.length);
                }
            } else {
                if (dimy == null) {
                    dim = new int[dimx.length + 1];
                    System.arraycopy(dimx, 0, dim, 0, dimx.length);
                    dim[dimx.length] = ysize;
                } else {
                    dim = new int[dimx.length + dimy.length];
                    System.arraycopy(dimx, 0, dim, 0, dimx.length);
                    System.arraycopy(dimy, 0, dim, dimx.length, dimy.length);
                }
            }
            return res.setDimensions(dim); // triggers materialization of the result
        }
Exemplo n.º 4
0
    @Override
    public Object execute(Frame frame) {

      RAny lhsVal = (RAny) lhs.execute(frame);
      Object rowFromVal = rowFromExpr.execute(frame);
      Object rowToVal = rowToExpr.execute(frame);
      Object colFromVal = colFromExpr.execute(frame);
      Object colToVal = colToExpr.execute(frame);
      boolean dropVal =
          dropExpr.executeLogical(frame)
              != RLogical.FALSE; // FIXME: what is the correct execution order of these args?
      int exactVal = exactExpr.executeLogical(frame);
      if (!(lhsVal instanceof RArray)) {
        throw RError.getObjectNotSubsettable(ast, lhsVal.typeOf());
      }
      RArray array = (RArray) lhsVal;

      try {

        int rowFrom = extractLimit(rowFromVal); // zero-based
        int rowTo = extractLimit(rowToVal);
        int colFrom = extractLimit(colFromVal);
        int colTo = extractLimit(colToVal);

        int[] dim = array.dimensions();
        if (dim == null || dim.length != 2) {
          throw RError.getIncorrectDimensions(getAST());
        }
        int m = dim[0];
        int n = dim[1];

        int rowStep;
        int rowSize;
        if (rowFrom <= rowTo) {
          rowStep = 1;
          if (rowTo > m) {
            throw new UnexpectedResultException(null);
          }
          rowSize = rowTo - rowFrom + 1;
        } else {
          rowStep = -1;
          if (rowFrom > m) {
            throw new UnexpectedResultException(null);
          }
          rowSize = rowFrom - rowTo + 1;
        }

        int colStep;
        int colSize;
        if (colFrom <= colTo) {
          colStep = 1;
          if (colTo > n) {
            throw new UnexpectedResultException(null);
          }
          colSize = colTo - colFrom + 1;
        } else {
          colStep = -1;
          if (colFrom > n) {
            throw new UnexpectedResultException(null);
          }
          colSize = colFrom - colTo + 1;
        }

        int[] ndim;
        if (!dropVal || (rowSize > 1 && colSize > 1)) {
          ndim = new int[] {rowSize, colSize};
        } else {
          ndim = null;
        }

        int size = rowSize * colSize;
        RArray res = Utils.createArray(array, size, ndim, null, null); // drop attributes

        if (colStep == 1 && rowStep == 1) {
          int j = colFrom * m + rowFrom; // j - index to source matrix
          int jmax = j + rowSize;
          int jadvance = m - rowSize;
          for (int i = 0; i < size; i++) {
            res.set(i, array.getRef(j++)); // i - index to target matrix
            if (j == jmax) {
              j += jadvance;
              jmax += m;
            }
          }
        } else {
          int i = 0;
          // NOTE: here we know that colFrom != colTo and rowFrom != rowTo
          for (int col = colFrom; col != colTo + colStep; col += colStep) {
            for (int row = rowFrom; row != rowTo + rowStep; row += rowStep) {
              res.set(i++, array.getRef(col * m + row));
            }
          }
        }
        return res;
      } catch (UnexpectedResultException e) {
        // FIXME: clean this up; does Colon need to be package-private?
        ASTNode rowAST = rowFromExpr.getAST().getParent();
        Builtin rowColon =
            (Builtin)
                Primitives.getCallFactory(RSymbol.getSymbol(":"), null)
                    .create(rowAST, rowFromExpr, rowToExpr);
        SelectorNode selIExpr = Selector.createSelectorNode(rowAST, true, rowColon);
        ASTNode colAST = colFromExpr.getAST().getParent();
        Builtin colColon =
            (Builtin)
                Primitives.getCallFactory(RSymbol.getSymbol(":"), null)
                    .create(colAST, colFromExpr, colToExpr);
        SelectorNode selJExpr = Selector.createSelectorNode(ast, true, colColon);
        MatrixRead nn = new MatrixRead(ast, true, lhs, selIExpr, selJExpr, dropExpr, exactExpr);
        replace(nn, "install MatrixRead from MatrixSequenceSubset");
        Selector selI =
            selIExpr.executeSelector(
                rowColon.doBuiltIn(frame, new RAny[] {(RAny) rowFromVal, (RAny) rowToVal}));
        Selector selJ =
            selJExpr.executeSelector(
                colColon.doBuiltIn(frame, new RAny[] {(RAny) colFromVal, (RAny) colToVal}));
        return nn.executeLoop(array, selI, selJ, dropVal, exactVal);
      }
    }
Exemplo n.º 5
0
    @Override
    public Object execute(Frame frame) {

      RAny lhsVal = (RAny) lhs.execute(frame);
      RAny colVal = (RAny) columnExpr.execute(frame);
      boolean dropVal =
          dropExpr.executeLogical(frame)
              != RLogical.FALSE; // FIXME: what is the correct execution order of these args?
      int exactVal = exactExpr.executeLogical(frame);

      // TODO: GNU-R has different behavior when selecting from arrays that have some dimension zero

      if (!(lhsVal instanceof RArray)) {
        throw RError.getObjectNotSubsettable(ast, lhsVal.typeOf());
      }
      RArray array = (RArray) lhsVal;
      int[] dim = array.dimensions();
      if (dim == null || dim.length != nSelectors) {
        throw RError.getIncorrectDimensions(getAST());
      }
      int n = dim[nSelectors - 1]; // limit for the column (last dimension)

      try {
        int col;
        if (colVal instanceof ScalarIntImpl) {
          col = ((ScalarIntImpl) colVal).getInt();
        } else if (colVal instanceof ScalarDoubleImpl) {
          col = Convert.double2int(((ScalarDoubleImpl) colVal).getDouble());
        } else {
          throw new UnexpectedResultException(null);
        }
        if (col > n || col <= 0) {
          throw new UnexpectedResultException(null);
        }

        int[] ndim;
        int m; // size of the result

        if (dropVal) {
          boolean hasNonTrivialDimension = false;
          boolean resultIsVector = true;
          m = 1;
          for (int i = 0; i < nSelectors - 1; i++) {
            int d = dim[i];
            if (d != 1) {
              if (hasNonTrivialDimension) {
                resultIsVector = false;
              } else {
                hasNonTrivialDimension = true;
              }
            }
            m *= d;
          }
          if (resultIsVector) {
            ndim = null;
          } else {
            ndim = new int[nSelectors - 1];
            System.arraycopy(dim, 0, ndim, 0, ndim.length);
          }
        } else {
          ndim = new int[nSelectors];
          ndim[nSelectors - 1] = 1;

          m = 1;
          for (int i = 0; i < ndim.length - 1; i++) {
            int d = dim[i];
            ndim[i] = d;
            m *= d;
          }
        }

        // note: also could be lazy here
        RArray res = Utils.createArray(array, m, ndim, null, null); // drop attributes
        int offset = (col - 1) * m; // note: col is 1-based
        for (int i = 0; i < m; i++) {
          res.set(i, array.getRef(offset + i));
        }
        return res;
      } catch (UnexpectedResultException e) {
        SelectorNode[] selectorExprs = new SelectorNode[nSelectors];
        for (int i = 0; i < nSelectors - 1; i++) {
          selectorExprs[i] = Selector.createSelectorNode(ast, true, null);
        }
        selectorExprs[nSelectors - 1] = Selector.createSelectorNode(ast, true, columnExpr);
        GenericRead gr = new GenericRead(ast, true, lhs, selectorExprs, dropExpr, exactExpr);
        replace(gr, "install GenericRead from ArrayColumnSubset");
        for (int i = 0; i < nSelectors - 1; i++) {
          gr.selectorVals[i] = selectorExprs[i].executeSelector(frame);
        }
        gr.selectorVals[nSelectors - 1] = selectorExprs[nSelectors - 1].executeSelector(colVal);
        return gr.executeLoop(array, dropVal, exactVal);
      }
    }
Exemplo n.º 6
0
 @Override
 public final Object execute(Frame frame) {
   RAny leftValue = (RAny) left.execute(frame);
   RAny rightValue = (RAny) right.execute(frame);
   return execute(leftValue, rightValue);
 }