com.saxonica.codegen
Class UserFunctionCallCompiler

java.lang.Object
  extended by com.saxonica.codegen.ExpressionCompiler
      extended by com.saxonica.codegen.SequenceExpressionCompiler
          extended by com.saxonica.codegen.UserFunctionCallCompiler

public class UserFunctionCallCompiler
extends SequenceExpressionCompiler

Compiles Java code to implement a Let expression


Constructor Summary
UserFunctionCallCompiler()
           
 
Method Summary
 void compilePush(CompilerService compiler, Expression expr)
          Generate Java code to execute the expression in push mode, that is, code to write events to the current output Receiver
 String compileToItem(CompilerService compiler, Expression expr)
          Generate Java code to evaluate the expression as an Item
 String compileToIterator(CompilerService compiler, Expression expr)
          Compile code to produce a SequenceIterator over the results of the expression
 String compileToValueRepresentation(CompilerService compiler, Expression expr)
          Generate Java code to evaluate the expression as a ValueRepresentation
 
Methods inherited from class com.saxonica.codegen.SequenceExpressionCompiler
compileToEffectiveBooleanValue
 
Methods inherited from class com.saxonica.codegen.ExpressionCompiler
compileAsLoop, compileToCharSequence, getConfiguration, makeExpressionCompiler, setConfiguration
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

UserFunctionCallCompiler

public UserFunctionCallCompiler()
Method Detail

compileToIterator

public String compileToIterator(CompilerService compiler,
                                Expression expr)
Compile code to produce a SequenceIterator over the results of the expression

Specified by:
compileToIterator in class ExpressionCompiler
Parameters:
compiler - The CompilerService
expr - the LetExpression to be compiled
Returns:
the compiled Java expression

compileToItem

public String compileToItem(CompilerService compiler,
                            Expression expr)
Description copied from class: ExpressionCompiler
Generate Java code to evaluate the expression as an Item

Overrides:
compileToItem in class SequenceExpressionCompiler
Parameters:
compiler - the compiler service
expr - the expression to be compiled
Returns:
a simple Java expression (usually the name of a variable that has been declared) which will be of class Item, and which will hold the value of the expression at run-time (or hold null, representing an empty sequence).

compilePush

public void compilePush(CompilerService compiler,
                        Expression expr)
Description copied from class: ExpressionCompiler
Generate Java code to execute the expression in push mode, that is, code to write events to the current output Receiver

Overrides:
compilePush in class SequenceExpressionCompiler
Parameters:
compiler - the compiler service
expr - the expression to be compiled

compileToValueRepresentation

public String compileToValueRepresentation(CompilerService compiler,
                                           Expression expr)
Description copied from class: ExpressionCompiler
Generate Java code to evaluate the expression as a ValueRepresentation

Overrides:
compileToValueRepresentation in class ExpressionCompiler
Parameters:
compiler - the compiler service
expr - the expression to be compiled
Returns:
a simple Java expression (usually the name of a variable that has been declared) which will be of class ValueRepresentation, and which at run-time will hold the value of the expression


Copyright (c) 2004-2010 Saxonica Limited. All rights reserved.