net.janino
Class Java.BinaryOperation

java.lang.Object
  |
  +--net.janino.Java.Located
        |
        +--net.janino.Java.Atom
              |
              +--net.janino.Java.Rvalue
                    |
                    +--net.janino.Java.BooleanRvalue
                          |
                          +--net.janino.Java.BinaryOperation

All Implemented Interfaces:

Java.Locatable

Enclosing class:

Java

public static class Java.BinaryOperation

extends Java.BooleanRvalue

Representation of all non-operand-modifying Java^TM binary operations.

Operations with boolean result:
|| && == != < > <= >=

Operations with non-boolean result:
| ^ & * / % + - << >> >>>

Fields inherited from class net.janino.Java.Rvalue

CONSTANT_VALUE_NULL, JUMP_IF_FALSE, JUMP_IF_TRUE

Constructor Summary

Java.BinaryOperation(Scanner.Location location, Java.Rvalue lhs, java.lang.String op, Java.Rvalue rhs)

Method Summary

void	compileBoolean(ClassFile.CodeAttribute.Offset dst, boolean orientation) Some Java.Rvalues compile more efficiently when their value is the condition for a branch. Notice that if "this" is a constant, then either "dst" is never branched to, or it is unconditionally branched to.
IClass	compileGet() Generates code that determines the value of the Java.Rvalue and puts it on the operand stack.
java.lang.Object	getConstantValue() Attempts to evaluate as a constant expression.
IClass	getType()

Methods inherited from class net.janino.Java.Rvalue

compile, compileContext, compileGetValue, getNegatedConstantValue, toRvalue

Methods inherited from class net.janino.Java.Atom

addConstantFloatInfo, addConstantIntegerInfo, addConstantStringInfo, allocateLocalVariable, compileError, createDummyCodeAttribute, getLocation, isType, newInserter, newOffset, newUnsetOffset, popInserter, pushInserter, restoreLocalVariables, saveLocalVariables, throwParseException, toLvalue, toLvalueOrCE, toLvalueOrPE, toRvalueOrCE, toRvalueOrPE, toType, toTypeOrCE, toTypeOrPE, write, writeBranch, writeByte, writeConstantClassInfo, writeConstantDoubleInfo, writeConstantFieldrefInfo, writeConstantFloatInfo, writeConstantIntegerInfo, writeConstantInterfaceMethodrefInfo, writeConstantLongInfo, writeConstantMethodrefInfo, writeConstantStringInfo, writeInt, writeOffset, writeOpcode, writeShort

Methods inherited from class java.lang.Object

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

Constructor Detail

Java.BinaryOperation

public Java.BinaryOperation(Scanner.Location location,
                            Java.Rvalue lhs,
                            java.lang.String op,
                            Java.Rvalue rhs)

Method Detail

getType

public IClass getType()
               throws Java.CompileException

Overrides:

getType in class Java.Atom

compileGet

public IClass compileGet()
                  throws Java.CompileException

Description copied from class: Java.Rvalue

Generates code that determines the value of the Java.Rvalue and puts it on the operand stack. This method relies on that the "context" of the Java.Rvalue is on top of the operand stack (see Java.Rvalue.compileContext()).

Overrides:

compileGet in class Java.BooleanRvalue

Following copied from class: net.janino.Java.Rvalue

Returns:

The type of the Java.Rvalue

compileBoolean

public void compileBoolean(ClassFile.CodeAttribute.Offset dst,
                           boolean orientation)
                    throws Java.CompileException

Description copied from class: Java.Rvalue

Some Java.Rvalues compile more efficiently when their value is the condition for a branch.
Notice that if "this" is a constant, then either "dst" is never branched to, or it is unconditionally branched to. "Unexamined code" errors may result during bytecode validation.

Overrides:

compileBoolean in class Java.Rvalue

getConstantValue

public java.lang.Object getConstantValue()
                                  throws Java.CompileException

Description copied from class: Java.Rvalue

Attempts to evaluate as a constant expression.

Expression type	Return value type
String	String
byte	Byte
short	Chort
int	Integer
boolean	Boolean
char	Character
float	Float
long	Long
double	Double
null	Java.Rvalue.CONSTANT_VALUE_NULL

Overrides:

getConstantValue in class Java.Rvalue