com.saxonica.codegen
Class StringJoinCompiler

java.lang.Object
  com.saxonica.codegen.ExpressionCompiler
      com.saxonica.codegen.SingletonExpressionCompiler
          com.saxonica.codegen.StringJoinCompiler

public class StringJoinCompiler
extends SingletonExpressionCompiler

Generate Java code to implement the string-join function

Constructor Summary

StringJoinCompiler()

Method Summary

void	compileAsLoop(CompilerService compiler, Expression expr, LoopAction action) Compile an expression in the form of a loop.
String	compileToCharSequence(CompilerService compiler, Expression expr) Generate Java code to evaluate the expression as a CharSequence
String	compileToCharSequenceOLD(CompilerService compiler, Expression expr) Compile Java code whose effect is to compute the string value of the expression; the generated code returns a CharSequence.
String	compileToItem(CompilerService compiler, Expression expr) Generate Java code to evaluate the expression as an Item

Methods inherited from class com.saxonica.codegen.SingletonExpressionCompiler

compilePush, compileToEffectiveBooleanValue, compileToIterator

Methods inherited from class com.saxonica.codegen.ExpressionCompiler

compileAsLoopWithContext, compileToValueRepresentation

Methods inherited from class java.lang.Object

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

Constructor Detail

StringJoinCompiler

public StringJoinCompiler()

Method Detail

compileToItem

public String compileToItem(CompilerService compiler,
                            Expression expr)

Description copied from class: ExpressionCompiler

Generate Java code to evaluate the expression as an Item

Specified by:

compileToItem 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 Item, and which will hold the value of the expression at run-time (or hold null, representing an empty sequence).

compileToCharSequenceOLD

public String compileToCharSequenceOLD(CompilerService compiler,
                                       Expression expr)

Compile Java code whose effect is to compute the string value of the expression; the generated code returns a CharSequence. This method must only be called for an expression that is known to return a value of type xs:string

Parameters:

expr - The expression to be compiled

Returns:

the name of a variable to which the resulting CharSequence is assigned.

compileToCharSequence

public String compileToCharSequence(CompilerService compiler,
                                    Expression expr)

Description copied from class: ExpressionCompiler

Generate Java code to evaluate the expression as a CharSequence

Overrides:

compileToCharSequence in class SingletonExpressionCompiler

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, or a string literal) which will be of class CharSequence, and which will hold the string value of the expression at run-time

compileAsLoop

public void compileAsLoop(CompilerService compiler,
                          Expression expr,
                          LoopAction action)

Compile an expression in the form of a loop. Default implementation.

Overrides:

compileAsLoop in class ExpressionCompiler

Parameters:

compiler - the CompilerService

expr - the expression to be compiled

action - the action to be taken to process each item in the sequence returned by the expression