Record Class DirectionConfig

java.lang.Object

java.lang.Record

org.ek9lang.compiler.phase7.support.DirectionConfig

Record Components:

directionOperator - Operator for runtime direction detection ("<" or ">")

conditionOperator - Operator for loop continuation check ("<=" or ">=")

incrementOperator - Operator for loop counter update ("++" or "--")

public record DirectionConfig(String directionOperator, String conditionOperator, String incrementOperator)
extends Record

Configuration for for-range loop direction (ascending vs descending).

CONCERN: Explicit operator triplet configuration for symmetric for-range cases. RESPONSIBILITY: Encapsulate the ONLY differences between ascending/descending loops. REUSABILITY: FOR_RANGE_POLYMORPHIC case generation.

The ascending and descending cases in for-range loops differ ONLY in 3 operators:

• Direction check: "<" (ascending) vs ">" (descending)
• Loop condition: "<=" (ascending) vs ">=" (descending)
• Increment: "++" (ascending) vs "--" (descending)

This record makes the symmetric relationship explicit in the type system instead of implicit in duplicated code.

Example:

for i in 1 ... 10:    // Ascending: 1 < 10, use <=, ++
for i in 10 ... 1:    // Descending: 10 > 1, use >=, --

Constructor Summary

Constructors

Constructor	Description
DirectionConfig(String directionOperator, String conditionOperator, String incrementOperator)	Creates an instance of a DirectionConfig record class.

Method Summary

Modifier and Type	Method	Description
static DirectionConfig	ascending()	Configuration for ascending for-range loops.
String	conditionOperator()	Returns the value of the conditionOperator record component.
static DirectionConfig	descending()	Configuration for descending for-range loops.
String	directionOperator()	Returns the value of the directionOperator record component.
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
final int	hashCode()	Returns a hash code value for this object.
String	incrementOperator()	Returns the value of the incrementOperator record component.
final String	toString()	Returns a string representation of this record class.

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

DirectionConfig

public DirectionConfig(String directionOperator,
 String conditionOperator,
 String incrementOperator)

Creates an instance of a DirectionConfig record class.

Parameters:

directionOperator - the value for the directionOperator record component

conditionOperator - the value for the conditionOperator record component

incrementOperator - the value for the incrementOperator record component

Method Details

ascending

public static DirectionConfig ascending()

Configuration for ascending for-range loops.

Example: for i in 1 ... 10

• Direction: start < end → direction < 0
• Condition: current <= end
• Increment: current++

descending

public static DirectionConfig descending()

Configuration for descending for-range loops.

Example: for i in 10 ... 1

• Direction: start > end → direction > 0
• Condition: current >= end
• Increment: current--

toString

public final String toString()

Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

Specified by:

toString in class Record

Returns:

a string representation of this object

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

directionOperator

public String directionOperator()

Returns the value of the directionOperator record component.

Returns:

the value of the directionOperator record component

conditionOperator

public String conditionOperator()

Returns the value of the conditionOperator record component.

Returns:

the value of the conditionOperator record component

incrementOperator

public String incrementOperator()

Returns the value of the incrementOperator record component.

Returns:

the value of the incrementOperator record component