[GROOVY-10029] SC: produce direct method call for assignment of collection to array

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 4.0.0-beta-1
• Component/s: bytecode, Static compilation

Language

groovy

• Assignee: Eric Milles
• Reporter: Eric Milles
• Created: 10/Apr/21 15:44
• Updated: 05/Oct/24 20:39
• Resolved: 14/Apr/21 19:00

Description

Consider the following:

@groovy.transform.CompileStatic
void test() {
  def list = [1, 2, 3, 4]
  Number[] array = list
  println array
}
test()

Groovy supports the implicit conversion "array = list" under STC/SC as of GROOVY-10002 and GROOVY-8983. Can the static compilation mode replace the call to DefaultTypeTransformation#castToType with a direct call to the collection's toArray() or toArray(T[])?

Issue Links

• relates to: GROOVY-11309 Optimise bytecode for empty list expressions