SingletonAtomizerCompiler

java.lang.Object
- com.saxonica.ee.bytecode.ExpressionCompiler
- - com.saxonica.ee.bytecode.ToItemCompiler
  - - com.saxonica.ee.bytecode.SingletonAtomizerCompiler

```
public class SingletonAtomizerCompiler
extends ToItemCompiler
```
Generate code for a SingletonAtomizer. This class combines two functions: atomizing an input sequence, and checking that the atomized sequence is a singleton

Constructor Summary

Constructors
Constructor Description

SingletonAtomizerCompiler()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`compileToItem(CompilerService compiler, Expression expression)`	Generate bytecode to evaluate the SingletonAtomizer as an Item Precondition: none.

Methods inherited from class com.saxonica.ee.bytecode.ToItemCompiler
compileToBoolean, compileToIterator, compileToPush, treatAsEmptyIfFirstArgumentIsEmpty

Methods inherited from class com.saxonica.ee.bytecode.ExpressionCompiler
allocateStatic, compileItemFromInt, compileToPrimitive, generateMethod, handleEmptyStringResult, printStackTop, verify, visitAnnotation, visitLineNumber

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SingletonAtomizerCompiler
```
public SingletonAtomizerCompiler()
```
- Method Detail
  - compileToItem
```
public void compileToItem(CompilerService compiler,
                          Expression expression)
                   throws CannotCompileException
```
    Generate bytecode to evaluate the SingletonAtomizer as an Item Precondition: none. Postcondition: the stack contains an Item representing the result of the expression
    
    Specified by:
    
    compileToItem in class ExpressionCompiler
    
    Parameters:
    
    compiler - the compiler service
    
    expression - the expression to be compiled
    
    Throws:
    
    CannotCompileException - if the expression cannot be compiled to bytecode