com.saxonica.codegen
Class NumericArithmeticCompiler

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

public class NumericArithmeticCompiler
extends SingletonExpressionCompiler

Compiler for arithmetic expressions where it is known that numeric arithmetic (as distinct from date/time/duration arithmetic) will be used

Constructor Summary

NumericArithmeticCompiler()

Method Summary

String	compileToItem(CompilerService compiler, Expression expr) Generate Java code to evaluate the expression as an Item
static String	convertUntyped(Expression operand, String opVar, CompilerService compiler)

Methods inherited from class com.saxonica.codegen.SingletonExpressionCompiler

compilePush, compileToCharSequence, compileToEffectiveBooleanValue, compileToIterator

Methods inherited from class com.saxonica.codegen.ExpressionCompiler

compileAsLoop, compileAsLoopWithContext, compileToValueRepresentation

Methods inherited from class java.lang.Object

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

Constructor Detail

NumericArithmeticCompiler

public NumericArithmeticCompiler()

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).

convertUntyped

public static String convertUntyped(Expression operand,
                                    String opVar,
                                    CompilerService compiler)