01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: /*
18: * Created on May 15, 2005
19: *
20: */
21: package org.apache.poi.hssf.record.formula.functions;
22:
23: import org.apache.poi.hssf.record.formula.eval.AreaEval;
24: import org.apache.poi.hssf.record.formula.eval.ErrorEval;
25: import org.apache.poi.hssf.record.formula.eval.Eval;
26: import org.apache.poi.hssf.record.formula.eval.NumberEval;
27: import org.apache.poi.hssf.record.formula.eval.RefEval;
28: import org.apache.poi.hssf.record.formula.eval.ValueEval;
29:
30: public class Row implements Function {
31:
32: public Eval evaluate(Eval[] evals, int srcCellRow, short srcCellCol) {
33: ValueEval retval = null;
34: int rnum = -1;
35:
36: switch (evals.length) {
37: default:
38: retval = ErrorEval.VALUE_INVALID;
39: case 1:
40: if (evals[0] instanceof AreaEval) {
41: AreaEval ae = (AreaEval) evals[0];
42: rnum = ae.getFirstRow();
43: } else if (evals[0] instanceof RefEval) {
44: RefEval re = (RefEval) evals[0];
45: rnum = re.getRow();
46: } else { // anything else is not valid argument
47: retval = ErrorEval.VALUE_INVALID;
48: }
49: break;
50: case 0:
51: rnum = srcCellRow;
52: }
53:
54: if (retval == null) {
55: retval = (rnum >= 0) ? new NumberEval(rnum + 1) // +1 since excel rownums are 1 based
56: : (ValueEval) ErrorEval.VALUE_INVALID;
57: }
58:
59: return retval;
60: }
61:
62: }
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