com.saxonica.bytecode

Class ArithmeticCompiler

java.lang.Object

com.saxonica.bytecode.ExpressionCompiler

com.saxonica.bytecode.ToItemCompiler

com.saxonica.bytecode.ArithmeticCompiler

public class ArithmeticCompiler
extends ToItemCompiler

Generate bytecode for a call to the ArithmeticExpression

Field Summary

Fields

Modifier and Type	Field and Description
static HashMap<Class<? extends Calculator>,CalculatorCompiler>	map

Constructor Summary

Constructors

Constructor and Description
ArithmeticCompiler()

Method Summary

Methods

Modifier and Type	Method and Description
void	compileToItem(CompilerService compiler, Expression expression) Generate bytecode to evaluate the ArithmeticExpression Precondition: none.
void	compileToPrimitive(CompilerService compiler, Expression expression, Class requiredClass, OnEmpty onEmpty) Generate bytecode to evaluate the expression leaving a plain Java value on the stack.
static CalculatorCompiler	map(Calculator calc)

Methods inherited from class com.saxonica.bytecode.ToItemCompiler

compileToBoolean, compileToIterator, compileToPush, returnZeroLengthStringIfNull

Methods inherited from class com.saxonica.bytecode.ExpressionCompiler

allocateStatic, compileItemFromInt, compileItemFromString, compileToLoop, generateMethod, handleEmptyStringResult, throwXPathException, throwXPathException, unboxItem, verify, visitAnnotation, visitLineNumber

Methods inherited from class java.lang.Object

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

Field Detail

map

public static HashMap<Class<? extends Calculator>,CalculatorCompiler> map

Constructor Detail

ArithmeticCompiler

public ArithmeticCompiler()

Method Detail

compileToItem

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

Generate bytecode to evaluate the ArithmeticExpression Precondition: none. Postcondition: the stack contains an item representing the result of the expression

Specified by:

compileToItem in class ExpressionCompiler

Parameters:

compiler - the compiler service

expression - the expression to be compiled

Throws:

CannotCompileException

compileToPrimitive

public void compileToPrimitive(CompilerService compiler,
                      Expression expression,
                      Class requiredClass,
                      OnEmpty onEmpty)
                        throws CannotCompileException

Generate bytecode to evaluate the expression leaving a plain Java value on the stack. The static type of the expression must be such that the value is known to be representable by a value of the specified class; the cardinality must be either exactly-one or zero-or-one.

Overrides:

compileToPrimitive in class ExpressionCompiler

Parameters:

compiler - the compiler service

expression - the expression to be compiled

requiredClass - the class of the Java value that is to be left on the stack if the generated code exits normally. This must be one of Integer.TYPE, Double.TYPE, Float.TYPE, BigDecimal.class, CharSequence.class.

onEmpty - a label to which control will be transferred (with nothing on the stack) if the result of the

Throws:

CannotCompileException

map

public static CalculatorCompiler map(Calculator calc)
                              throws CannotCompileException

Throws:

CannotCompileException