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https://issues.apache.org/jira/browse/GROOVY-8724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16580768#comment-16580768
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Paul King edited comment on GROOVY-8724 at 8/15/18 7:48 AM:
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The JVM doesn't allow particular characters in identifiers: {{. ; [ /}} (that
is, period or semicolon or left square bracket or forward slash) nor {{<}} and
{{>}} except for the special names {{<init>}} and {{<clinit>}}:
https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.2.2
There might be times when Groovy let's you sneak in some additional characters
so long as your class is in memory and not written out to a class file. If
there is, you can argue that we should report an error in such cases if you try
to write out to a classfile.
But long story short - I'd recommend not using those characters.
was (Author: paulk):
The JVM doesn't allow particular characters in identifiers: {{. ; [ /}} (that
is, period or semicolon or left square bracket or forward slash) nor {{<}} and
{{>}} except for the special names {{<init>}} and {{<clinit>}}:
https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.2.2
Groovy let's you sneak in some additional characters so long as your class is
in memory and not written out to a class file.
You can argue that we should report an error in such cases if you try to write
out to a classfile.
> Groovy static methods with dots causes compilation error
> --------------------------------------------------------
>
> Key: GROOVY-8724
> URL: https://issues.apache.org/jira/browse/GROOVY-8724
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 2.4.15
> Environment: Linux 16.04 Java 1.8.0_171 IDEA Community Edition
> 2018.1.6
> Reporter: Markov Alexey
> Priority: Major
>
> I have a problem with methods that have dots in their name. Here's a code
> example
>
> {code:java}
> class SomeList {
> SomeList(String field) {
> }
> static SomeList "Regular name of method"() {
> println("regular method")
> }
> static SomeList "Name with.dot"() {
> println("method with dot")
> }
> }
> {code}
> and i have test for it which cause compilation error:
>
>
> {code:java}
> class SomeListTests {
> @Test
> def "some list test"() {
> //given
> SomeList list = new SomeList()
> //when
> list."Regular name of method"()
> //then
> //compilation error
> }
> }
> {code}
> Even if i run it in IDEA or with ./gradlew test it crashes with error:
>
>
> {code:java}
> Error:Groovyc: While compiling tests of example-project_test: BUG! exception
> in phase 'semantic analysis' in source unit
> '/home/alex/Projects/example-project/src/test/groovy/SomeListTests.groovy'
> Problem loading class SomeList
> at
> org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:970)
> ... and so on i can drop all at comments{code}
> BUT if i run Groovy script like this:
>
> Script:
>
> {code:java}
> SomeList."Regular name of method"()
> SomeList."Name with.dot"()
> {code}
> Run:
>
>
> {code:java}
> class Main {
> public static void main(String[] args) {
> GroovyShell shell = new GroovyShell()
> shell.run(new File("""pathToFile/Script.groovy"""),
> Collections.emptyList())
> println "Everything is cool"
> }
> }
> {code}
> I have everything perfect:
>
> {code:java}
> regular method
> method with dot
> Everything is cool
> {code}
>
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