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 JavaTM 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 typeReturn value type
StringString
byteByte
shortChort
intInteger
booleanBoolean
charCharacter
floatFloat
longLong
doubleDouble
nullJava.Rvalue.CONSTANT_VALUE_NULL

Overrides:
getConstantValue in class Java.Rvalue