net.janino
Class Java.ArrayAccessExpression

java.lang.Object
  |
  +--net.janino.Java.Located
        |
        +--net.janino.Java.Atom
              |
              +--net.janino.Java.Rvalue
                    |
                    +--net.janino.Java.Lvalue
                          |
                          +--net.janino.Java.ArrayAccessExpression

All Implemented Interfaces:

Java.Locatable

Enclosing class:

Java

public static class Java.ArrayAccessExpression

extends Java.Lvalue

This class implements an array access.

Fields inherited from class net.janino.Java.Rvalue

CONSTANT_VALUE_NULL, JUMP_IF_FALSE, JUMP_IF_TRUE

Constructor Summary

Java.ArrayAccessExpression(Scanner.Location location, Java.Rvalue lhs, Java.Rvalue index)

Method Summary

int	compileContext() Generates code that determines the context of the Java.Rvalue and puts it on the operand stack.
IClass	compileGet() Generates code that determines the value of the Java.Rvalue and puts it on the operand stack.
void	compileSet(IClass valueType, java.lang.Object optionalConstantValue) Generates code that stores a value in the Java.Lvalue.
IClass	getType()

Methods inherited from class net.janino.Java.Lvalue

toLvalue

Methods inherited from class net.janino.Java.Rvalue

compile, compileBoolean, compileGetValue, getConstantValue, 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, 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.ArrayAccessExpression

public Java.ArrayAccessExpression(Scanner.Location location,
                                  Java.Rvalue lhs,
                                  Java.Rvalue index)

Method Detail

getType

public IClass getType()
               throws Java.CompileException

Overrides:

getType in class Java.Atom

compileContext

public int compileContext()
                   throws Java.CompileException

Description copied from class: Java.Rvalue

Generates code that determines the context of the Java.Rvalue and puts it on the operand stack. Most expressions do not have a "context", but some do. E.g. for "x[y]", the context is "x, y". The bottom line is that for statements like "x[y] += 3" the context is only evaluated once.

Overrides:

compileContext in class Java.Rvalue

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

Returns:

The size of the context on the operand stack

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.Rvalue

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

Returns:

The type of the Java.Rvalue

compileSet

public void compileSet(IClass valueType,
                       java.lang.Object optionalConstantValue)
                throws Java.CompileException

Description copied from class: Java.Lvalue

Generates code that stores a value in the Java.Lvalue. Expects the Java.Lvalue's context (see Java.Rvalue.compileContext()) and a value of type "valueType" on the operand stack.

If optionalConstantValue is not null, then the stack top value is identical to it; this allows for "primitive constant assignment conversion" (JLS 5.2).

Overrides:

compileSet in class Java.Lvalue