com.saxonica.ee.bytecode

Class EmptyCompiler

java.lang.Object

com.saxonica.ee.bytecode.ExpressionCompiler

com.saxonica.ee.bytecode.ToBooleanCompiler

com.saxonica.ee.bytecode.EmptyCompiler

public class EmptyCompiler
extends ToBooleanCompiler

Generate bytecode for the fn:empty() function

Constructor Summary

Constructors

Constructor and Description
EmptyCompiler()

Method Summary

Modifier and Type	Method and Description
void	compileToBoolean(CompilerService compiler, Expression expression) Generate bytecode to evaluate the expression as a boolean Precondition: none.

Methods inherited from class com.saxonica.ee.bytecode.ToBooleanCompiler

compileToItem, compileToIterator, compileToPush

Methods inherited from class com.saxonica.ee.bytecode.ExpressionCompiler

allocateStatic, compileItemFromInt, compileToLoop, compileToPrimitive, generateMethod, handleEmptyStringResult, printStackTop, unboxItem, verify, visitAnnotation, visitLineNumber

Methods inherited from class java.lang.Object

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

Constructor Detail

EmptyCompiler

public EmptyCompiler()

Method Detail

compileToBoolean

public void compileToBoolean(CompilerService compiler,
                             Expression expression)
                      throws CannotCompileException

Description copied from class: ExpressionCompiler

Generate bytecode to evaluate the expression as a boolean Precondition: none. Postcondition: at execution time, the stack contains an integer (0=false, 1=true) representing the result of the expression

Specified by:

compileToBoolean in class ExpressionCompiler

Parameters:

compiler - the compiler service

expression - the expression to be compiled

Throws:

CannotCompileException