Package com.igormaznitsa.jbbp.compiler.varlen

Class JBBPOnlyFieldEvaluator

java.lang.Object

com.igormaznitsa.jbbp.compiler.varlen.JBBPOnlyFieldEvaluator

All Implemented Interfaces:

JBBPIntegerValueEvaluator, Serializable

public final class JBBPOnlyFieldEvaluator
extends Object
implements JBBPIntegerValueEvaluator

Class implements an evaluator which works with only field.

Since:

1.0

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
JBBPOnlyFieldEvaluator(String externalFieldName, int namedFieldIndex)	The Constructor.

Method Summary

Modifier and Type	Method	Description
int	eval(JBBPBitInputStream inStream, int currentCompiledBlockOffset, JBBPCompiledBlock block, JBBPNamedNumericFieldMap fieldMap)	Calculate an integer value.
String	toString()
void	visitItems(JBBPCompiledBlock block, int currentCompiledBlockOffset, ExpressionEvaluatorVisitor visitor)	Visit all expression items

Methods inherited from class java.lang.Object

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

Constructor Details

JBBPOnlyFieldEvaluator

public JBBPOnlyFieldEvaluator(String externalFieldName,
 int namedFieldIndex)

The Constructor.

Parameters:

externalFieldName - the external field name, it can be null.

namedFieldIndex - the index of a named field in named field area.

Method Details

eval

public int eval(JBBPBitInputStream inStream,
 int currentCompiledBlockOffset,
 JBBPCompiledBlock block,
 JBBPNamedNumericFieldMap fieldMap)

Description copied from interface: JBBPIntegerValueEvaluator

Calculate an integer value.

Specified by:

eval in interface JBBPIntegerValueEvaluator

Parameters:

inStream - a bit input stream

currentCompiledBlockOffset - the current offset in the compiled block

block - a compiled script block

fieldMap - a named numeric field map

Returns:

calculated value as integer

toString

public String toString()

Overrides:

toString in class Object

visitItems

public void visitItems(JBBPCompiledBlock block,
 int currentCompiledBlockOffset,
 ExpressionEvaluatorVisitor visitor)

Description copied from interface: JBBPIntegerValueEvaluator

Visit all expression items

Specified by:

visitItems in interface JBBPIntegerValueEvaluator

Parameters:

block - the compiled block contains value, must not be null

currentCompiledBlockOffset - the offset of the data in the compiled block

visitor - the visitor to visit items, must not be null