com.adobe.xfa.formcalc

Class Stack

java.lang.Object

com.adobe.xfa.formcalc.Stack

public final class Stack
extends Object

Class Stack defines the runtime stack that's used by the FormCalc scripting engine. Specifically, the FormCalc interpreter is a stack machine; it doesn't have general purpose registers. Rather all intermediate values are preserved on a stack.

For example, when the FormCalc interpreter performs an add instruction, it will pop two operands off the stack, add them together, and push the result onto the stack.

Method Summary

Modifier and Type	Method and Description
CalcSymbol	peek(int nOffset) Peeks at a symbol within this Stack object.

Methods inherited from class java.lang.Object

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

Method Detail

peek

public CalcSymbol peek(int nOffset)

Peeks at a symbol within this Stack object.

Parameters:

nOffset - an offset within the stack.

Returns:

the symbol within the stack.