org.apache.calcite.util

Class Stacks

java.lang.Object

org.apache.calcite.util.Stacks

Deprecated.

@Deprecated
public class Stacks
extends Object

Utilities to make vanilla lists look like stacks.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Stacks() Deprecated.

Method Summary

Modifier and Type	Method and Description
static <T> T	peek(int n, List<T> stack) Deprecated. Returns the nth most recently added element in the stack.
static <T> T	peek(List<T> stack) Deprecated. Returns the most recently added element in the stack.
static <T> T	pop(List<T> stack) Deprecated. Removes an element from the stack and returns it.
static <T> void	pop(List<T> stack, T element) Deprecated. Removes an element from the stack.
static <T> void	push(List<T> stack, T element) Deprecated. Adds an element to the stack.

Methods inherited from class java.lang.Object

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

Constructor Detail

Stacks

private Stacks()

Deprecated.

Method Detail

peek

public static <T> T peek(List<T> stack)

Deprecated.

Returns the most recently added element in the stack. Throws if the stack is empty.

peek

public static <T> T peek(int n,
                         List<T> stack)

Deprecated.

Returns the nth most recently added element in the stack. Throws if the stack is empty.

push

public static <T> void push(List<T> stack,
                            T element)

Deprecated.

Adds an element to the stack.

pop

public static <T> void pop(List<T> stack,
                           T element)

Deprecated.

Removes an element from the stack. Asserts of the element is not the one last added; throws if the stack is empty.

pop

public static <T> T pop(List<T> stack)

Deprecated.

Removes an element from the stack and returns it.

Throws if the stack is empty.