com.saxonica.codegen
Class UserFunctionCallCompiler

java.lang.Object
  com.saxonica.codegen.ExpressionCompiler
      com.saxonica.codegen.SequenceExpressionCompiler
          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

compileToCharSequence, compileToEffectiveBooleanValue

Methods inherited from class com.saxonica.codegen.ExpressionCompiler

compileAsLoop

Methods inherited from class java.lang.Object

equals, 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