org.apache.pdfbox.pdmodel.common.function.type4
Class ExecutionContext

java.lang.Object
  org.apache.pdfbox.pdmodel.common.function.type4.ExecutionContext

public class ExecutionContext
extends Object

Makes up the execution context, holding the available operators and the execution stack.

Version:

$Revision$

Constructor Summary

ExecutionContext(Operators operatorSet)
Creates a new execution context.

Method Summary

Operators	getOperators() Returns the operator set used by this execution context.
Stack<Object>	getStack() Returns the stack used by this execution context.
int	popInt() Pops a value of type int from the stack.
Number	popNumber() Pops a number (int or real) from the stack.
float	popReal() Pops a number from the stack and returns it as a real value.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExecutionContext

public ExecutionContext(Operators operatorSet)

Creates a new execution context.

Parameters:

operatorSet - the operator set

Method Detail

getStack

public Stack<Object> getStack()

Returns the stack used by this execution context.

Returns:

the stack

getOperators

public Operators getOperators()

Returns the operator set used by this execution context.

Returns:

the operator set

popNumber

public Number popNumber()

Pops a number (int or real) from the stack. If it's neither data type, a ClassCastException is thrown.

Returns:

the number

popInt

public int popInt()

Pops a value of type int from the stack. If the value is not of type int, a ClassCastException is thrown.

Returns:

the int value

popReal

public float popReal()

Pops a number from the stack and returns it as a real value. If the value is not of a numeric type, a ClassCastException is thrown.

Returns:

the real value