[GROOVY-2998] Disable overriding via MOP for certain interfaces, classes and methods

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.5.6
• Component/s: groovy-jdk
• Assignee: Unassigned
• Reporter: Alexander Veit
• Created: 12/Aug/08 15:11
• Updated: 18/Jan/13 08:42

Description

Disable overriding via MOP for the following interfaces, classes and methods

java.lang.CharSequence
 charAt(int)
 length()
 subSequence(int, int)

java.lang.Comparable
 compareTo(T)

java.lang.Number
 byteValue()
 doubleValue()
 floatValue()
 intValue()
 longValue()
 shortValue()

java.lang.Object
 equals(Object)
 getClass()
 hashCode()
 toString()

java.lang.Boolean
 <all methods>

java.lang.Byte
 <all methods>

java.lang.Short
 <all methods>

java.lang.Integer
 <all methods>

java.lang.Long
 <all methods>

java.lang.Double
 <all methods>

java.lang.Float
 <all methods>

java.lang.Enum
 getDeclaringClass()
 name()
 ordinal()

java.lang.String
 <all methods>

java.lang.StringBuffer
 <all methods>

java.lang.StringBuilder
 <all methods>

Overriding these methods

• does not make sense,
• adds significant runtime overhead to GDK methods,
• is not thoroughly respected by runtime libraries, epecially the JRE, and
• would require to change class file generation (e.g. for concatenated literals).

This issue is related to http://jira.codehaus.org/browse/GROOVY-2599.