com.jcodeing.kmedia.utils

Class Assert

java.lang.Object

com.jcodeing.kmedia.utils.Assert

public final class Assert
extends java.lang.Object

Provides methods for asserting the truth of expressions and properties.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Assert()

Method Summary

Modifier and Type	Method and Description
static boolean	checkIndex(int index, int limit)
static boolean	checkIndex(int index, int start, int limit)
static boolean	checkNotEmpty(java.util.Collection collection) Throws IllegalArgumentException if string
static boolean	checkNotSpecialWidthHeight(int value)
static int	reviseIndex(int index, int limit)
static int	reviseIndex(int index, int start, int limit)
static float	reviseInterval(float x, float a, float b, boolean left_open, boolean right_open) Open : { x | a < x < b } Closed : { x | a <= x <= b } Left-closed,right-open : { x | a <= x < b } Left-open,right-closed : { x | a < x <= b }
static int	reviseInterval(int x, int a, int b, boolean left_open, boolean right_open) Open : { x | a < x < b } Closed : { x | a <= x <= b } Left-closed,right-open : { x | a <= x < b } Left-open,right-closed : { x | a < x <= b }
static long	reviseInterval(long x, long a, long b, boolean left_open, boolean right_open) Open : { x | a < x < b } Closed : { x | a <= x <= b } Left-closed,right-open : { x | a <= x < b } Left-open,right-closed : { x | a < x <= b }

Methods inherited from class java.lang.Object

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

Constructor Detail

Assert

private Assert()

Method Detail

checkIndex

public static boolean checkIndex(int index,
                                 int start,
                                 int limit)

Parameters:

index - The index to check.

start - The start of the allowed range (inclusive).

limit - The end of the allowed range (exclusive).

Returns:

index >= start && index < limit

• true: if index outside the specified bounds.
• false: if index falls outside the specified bounds.

checkIndex

public static boolean checkIndex(int index,
                                 int limit)

Parameters:

index - The index to check.

limit - The end of the allowed range (exclusive).

Returns:

index >= 0 && index < limit

• true: if index outside the specified bounds.
• false: if index falls outside the specified bounds.

checkNotEmpty

public static boolean checkNotEmpty(java.util.Collection collection)

Throws IllegalArgumentException if string

Parameters:

collection - Collection

Returns:

collection != null && !collection.isEmpty()

• true: if is null or this collection contains no elements.
• false: if non-null, non-empty.

checkNotSpecialWidthHeight

public static boolean checkNotSpecialWidthHeight(int value)

Returns:

is not special value for the height or width

See Also:

ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT

reviseInterval

public static int reviseInterval(int x,
                                 int a,
                                 int b,
                                 boolean left_open,
                                 boolean right_open)

 Open : { x | a < x < b }
 Closed : { x | a <= x <= b }
 Left-closed,right-open : { x | a <= x < b }
 Left-open,right-closed : { x | a < x <= b }
 

WARNING: open interval special situation(a>b), return origin x.

Parameters:

left_open - True open(a < x), false closed(a <= x)

right_open - True open(x > b), false closed(x >= b)

reviseInterval

public static long reviseInterval(long x,
                                  long a,
                                  long b,
                                  boolean left_open,
                                  boolean right_open)

 Open : { x | a < x < b }
 Closed : { x | a <= x <= b }
 Left-closed,right-open : { x | a <= x < b }
 Left-open,right-closed : { x | a < x <= b }
 

WARNING: open interval special situation(a>b), return origin x.

Parameters:

left_open - True open(a < x), false closed(a <= x)

right_open - True open(x > b), false closed(x >= b)

reviseInterval

public static float reviseInterval(float x,
                                   float a,
                                   float b,
                                   boolean left_open,
                                   boolean right_open)

 Open : { x | a < x < b }
 Closed : { x | a <= x <= b }
 Left-closed,right-open : { x | a <= x < b }
 Left-open,right-closed : { x | a < x <= b }
 

WARNING: open interval special situation(a>b), return origin x.

Parameters:

left_open - True open(a < x), false closed(a <= x)

right_open - True open(x > b), false closed(x >= b)

reviseIndex

public static int reviseIndex(int index,
                              int start,
                              int limit)

Parameters:

index - The index to check.

start - The start of the allowed range (inclusive).

limit - The end of the allowed range (exclusive).

Returns:

Revised index (index >= start && index < limit)

reviseIndex

public static int reviseIndex(int index,
                              int limit)

Parameters:

index - The index to check.

limit - The end of the allowed range (exclusive).

Returns:

Revised index (index >= 0 && index < limit)