bundles/org.simantics.spreadsheet.graph/src/org/simantics/spreadsheet/graph/formula/SqrtFormulaFunction.java

   1 package org.simantics.spreadsheet.graph.formula;\r
   2 \r
   3 import org.simantics.spreadsheet.graph.CellFormulaFunction;\r
   4 import org.simantics.spreadsheet.graph.CellValueVisitor;\r
   5 import org.simantics.spreadsheet.graph.SpreadsheetGraphUtils;\r
   6 import org.simantics.spreadsheet.graph.parser.ast.AstArgList;\r
   7 \r
   8 public class SqrtFormulaFunction implements CellFormulaFunction<Object> {\r
   9 \r
  10     @Override\r
  11     public Object evaluate(CellValueVisitor visitor, AstArgList args) {\r
  12         if (args.values.size() != 1) throw new IllegalStateException();\r
  13         \r
  14         Object number = args.values.get(0).accept(visitor);\r
  15         Double dVal = SpreadsheetGraphUtils.asDoubleWhereEmptyStringIsZero(number);\r
  16         if(dVal==null) return FormulaError2.handleErrorCall(number);\r
  17         if(dVal<0) return FormulaError2.NUM.getString();\r
  18 \r
  19         return Math.sqrt(dVal);\r
  20     }\r
  21 }\r