com.saxonica.ee.bytecode

Class ToStringCompiler

java.lang.Object

com.saxonica.ee.bytecode.ExpressionCompiler

com.saxonica.ee.bytecode.ToItemCompiler

com.saxonica.ee.bytecode.ToStringCompiler

Direct Known Subclasses:

ConcatCompiler, ForceCaseCompiler, GenerateIdCompiler, NodePropertyCompiler, NormalizeSpaceCompiler, StringFnCompiler, StringJoinCompiler, SubstringAfterCompiler, SubstringBeforeCompiler, TranslateCompiler

public abstract class ToStringCompiler
extends ToItemCompiler

Generate bytecode for evaluation of expressions that return a single string (or an empty sequence)

Constructor Summary

Constructors

Constructor and Description
ToStringCompiler()

Method Summary

Modifier and Type	Method and Description
protected void	compileItemFromString(CompilerService compiler, Expression expression) Helper method to implement compileFromItem when the class implements compileToPrimitive
void	compileToItem(CompilerService compiler, Expression expression) Generate bytecode to evaluate the expression as an Item Precondition: none.

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

compileToBoolean, compileToIterator, compileToPush, returnZeroLengthStringIfNull

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

ToStringCompiler

public ToStringCompiler()

Method Detail

compileToItem

public final void compileToItem(CompilerService compiler,
                                Expression expression)
                         throws CannotCompileException

Generate bytecode to evaluate the expression as an Item Precondition: none. Postcondition: at execution time, the stack contains either an item (the result of the expression), or null (representing an empty sequence).

Specified by:

compileToItem in class ExpressionCompiler

Parameters:

compiler - the compiler service

expression - the expression to be compiled

Throws:

CannotCompileException

compileItemFromString

protected final void compileItemFromString(CompilerService compiler,
                                           Expression expression)
                                    throws CannotCompileException

Helper method to implement compileFromItem when the class implements compileToPrimitive

Parameters:

compiler -

expression -

Throws:

CannotCompileException