org.expressionj.expr

Class AbstractUnaryNumericExpression

java.lang.Object

org.expressionj.model.AbstractExpression

org.expressionj.expr.AbstractUnaryExpression

org.expressionj.expr.AbstractUnaryNumericExpression

All Implemented Interfaces:

java.lang.Cloneable, Expression, ExpressionType, UnaryExpression

Direct Known Subclasses:

ExprABS, ExprECHO, ExprSIGN

public abstract class AbstractUnaryNumericExpression
extends AbstractUnaryExpression

An abstract unary numeric expression.

Field Summary

Fields

Modifier and Type	Field and Description
protected short	type

Fields inherited from class org.expressionj.expr.AbstractUnaryExpression

expr

Fields inherited from class org.expressionj.model.AbstractExpression

block, root

Fields inherited from interface org.expressionj.model.ExpressionType

STRUCT_ARRAY, STRUCT_SCALAR, STRUCT_STRUCTURE, TYPE_BOOL, TYPE_DYNAMIC, TYPE_FLOAT, TYPE_INTEGER, TYPE_NUMERIC, TYPE_STRING, TYPE_UNDEF

Constructor Summary

Constructors

Constructor and Description
AbstractUnaryNumericExpression(Expression root)

Method Summary

Modifier and Type	Method and Description
short	getResultStructure() Return the structure of the result for the expression.
short	getResultType() Return the type of the result for the expression.

Methods inherited from class org.expressionj.expr.AbstractUnaryExpression

getVariables

Methods inherited from class org.expressionj.model.AbstractExpression

clone, evalAsBoolean, evalAsFloat, evalAsInt, getParentBlock, getRoot, setParentBlock, setRoot

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.expressionj.model.UnaryExpression

getExpression, setExpression

Methods inherited from interface org.expressionj.model.Expression

clone, eval, evalAsBoolean, evalAsFloat, evalAsInt, getExpressionName, getLocalVariable, getLocalVariables, getParentBlock, getRoot, getVariable, getVariable, getVariables, hasVariable, hasVariable, removeVariable, setParentBlock

Field Detail

type

protected short type

Constructor Detail

AbstractUnaryNumericExpression

public AbstractUnaryNumericExpression(Expression root)

Method Detail

getResultType

public short getResultType()

Description copied from interface: Expression

Return the type of the result for the expression. The type can be:

• ExpressionType.TYPE_INTEGER: integer
• ExpressionType.TYPE_FLOAT: float
• ExpressionType.TYPE_NUMERIC: integer or float value. The runtime actual type may depend on the expression arguments
• ExpressionType.TYPE_STRING: string
• ExpressionType.TYPE_DYNAMIC: dynamic type. The runtime actual type may depend on the expression arguments
• ExpressionType.TYPE_UNDEF: undefined type. The default type, characteristic of an error if entountered.

Returns:

the type of the result for the expression

getResultStructure

public short getResultStructure()

Description copied from interface: Expression

Return the structure of the result for the expression. The structure can be:

• ExpressionType.STRUCT_SCALAR: a scalar value
• ExpressionType.STRUCT_ARRAY: an array value

Returns:

he structure of the result for the expression