jxl.biff.formula: abstract class: Operator

jxl.biff.formula
abstract class: Operator [javadoc | source]

java.lang.Object
   jxl.biff.formula.ParseItem
      jxl.biff.formula.Operator

Direct Known Subclasses:
Plus, Add, UnaryMinus, Attribute, RangeSeparator, Equal, Concatenate, Percent, LessEqual, GreaterThan, Parenthesis, Divide, Subtract, StringOperator, BuiltInFunction, LessThan, NotEqual, Power, Minus, UnaryOperator, Union, Multiply, BinaryOperator, UnaryPlus, VariableArgFunction, GreaterEqual

An operator is a node in a parse tree. Its children can be other operators or operands Arithmetic operators and functions are all considered operators

Constructor:
public Operator() { operands = new ParseItem[0]; } Constructor

Constructor:

 public Operator() {
    operands = new ParseItem[0];
}

Constructor

Method from jxl.biff.formula.Operator Summary:
add, getOperands, getOperands, getPrecedence, setOperandAlternateCode

Methods from jxl.biff.formula.ParseItem:
adjustRelativeCellReferences, columnInserted, columnRemoved, getBytes, getString, handleImportedCellReferences, isValid, isVolatile, rowInserted, rowRemoved, setAlternateCode, setInvalid, setParent, setVolatile, useAlternateCode

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from jxl.biff.formula.Operator Detail:
protected void add(ParseItem n) { n.setParent(this); // Grow the array ParseItem[] newOperands = new ParseItem[operands.length + 1]; System.arraycopy(operands, 0, newOperands, 0, operands.length); newOperands[operands.length] = n; operands = newOperands; } Adds operands to this item
protected ParseItem[] getOperands() { return operands; } Gets the operands ie. the children of the node
abstract public void getOperands(Stack s) Gets the operands for this operator from the stack
abstract int getPrecedence() Gets the precedence for this operator. Operator precedents run from 1 to 5, one being the highest, 5 being the lowest
protected void setOperandAlternateCode() { for (int i = 0 ; i < operands.length ; i++) { operands[i].setAlternateCode(); } } Tells the operands to use the alternate code