OperandStack (opeo-maven-plugin 0.3.7 API)

java.lang.Object
- org.eolang.opeo.decompilation.OperandStack

```
public final class OperandStack
extends Object
```
Operand stack.
You can read more about it here
It emulates the behaviour of JVM operand stack.

Since:

0.2

Constructor Summary

Constructors
Constructor Description

OperandStack()
Default constructor.

OperandStack(AstNode... nodes)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`dup()`	Duplicate the higher value on the stack.
`Optional<AstNode>`	`first()`	Pop one node from the stack or return empty.
`AstNode`	`pop()`	Pop one node from the stack.
`List<AstNode>`	`pop(int number)`	Pop N nodes from the stack.
`String`	`pretty()`	Pretty representation of the stack.
`void`	`push(AstNode node)`	Push one more node to the stack.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - OperandStack
```
public OperandStack()
```
    Default constructor.
  - OperandStack
```
public OperandStack(AstNode... nodes)
```
    Constructor.
    
    Parameters:
    
    nodes - Initial stack nodes.
- Method Detail
  - first
```
public Optional<AstNode> first()
```
    Pop one node from the stack or return empty.
    
    Returns:
    
    Optional node.
  - pop
```
public AstNode pop()
```
    Pop one node from the stack.
    
    Returns:
    
    Node.
  - pop
```
public List<AstNode> pop(int number)
```
    Pop N nodes from the stack.
    
    Parameters:
    
    number - Number of nodes to pop.
    
    Returns:
    
    Collection of nodes.
  - push
```
public void push(AstNode node)
```
    Push one more node to the stack.
    
    Parameters:
    
    node - Node to add to the stack.
  - dup
```
public void dup()
```
    Duplicate the higher value on the stack.
  - pretty
```
public String pretty()
```
    Pretty representation of the stack.
    
    Returns:
    
    Human-readable string that represents the stack state.