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https://issues.apache.org/jira/browse/GROOVY-11309?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Milles updated GROOVY-11309:
---------------------------------
Affects Version/s: (was: 3.0.20)
(was: 4.0.18)
(was: 5.0.0-alpha-5)
> Optimise bytecode for empty list expressions
> --------------------------------------------
>
> Key: GROOVY-11309
> URL: https://issues.apache.org/jira/browse/GROOVY-11309
> Project: Groovy
> Issue Type: Improvement
> Components: class generator, Compiler
> Affects Versions: 2.5.23
> Reporter: Oscar N
> Assignee: Eric Milles
> Priority: Minor
>
> I have the following code:
> {code:groovy}
> class Book {
> String title
> String blurb = ''
> List<String> authors = []
> }
> {code}
> When checking the compiled output, the creation of the empty list goes
> through ScriptBytecodeAdapter:
> {code:java}
> @Generated
> public Book() {
> String var1 = "";
> this.blurb = var1;
> List var2 = ScriptBytecodeAdapter.createList(new Object[0]);
> this.authors = var2;
> MetaClass var3 = this.$getStaticMetaClass();
> this.metaClass = var3;
> }
> {code}
> This case can be simplified to "List var2 = new ArrayList()", which would
> avoid some overhead and slightly improve @POJO support.
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