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https://issues.apache.org/jira/browse/GROOVY-11202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17778629#comment-17778629
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Paul King commented on GROOVY-11202:
------------------------------------
It isn't related to groovy gradle plugin per se. Groovydoc currently just uses
the default config options via the StaticJavaParser facade:
https://github.com/apache/groovy/blob/master/subprojects/groovy-groovydoc/src/main/java/org/codehaus/groovy/tools/groovydoc/antlr4/GroovyDocParser.java#L70
So, we should rework to allow config options to be set. Subsequent steps might
then be to propagate such changes to other tools like ant/gradle/maven
tools/plugins if needed.
> Support use of patterns with instanceof in groovydoc
> ----------------------------------------------------
>
> Key: GROOVY-11202
> URL: https://issues.apache.org/jira/browse/GROOVY-11202
> Project: Groovy
> Issue Type: Bug
> Reporter: Per Nyfelt
> Priority: Minor
>
> When running Gradle 8.4 -> GroovyDoc 4.0.15 which uses javaparser-core 3.25.5
> i get the following error:
> {noformat}
> [ant:groovydoc] Attempting to ignore error parsing Java source file:
> se/alipsa/groovy/matrix/util/DataType.java
> [ant:groovydoc] Consider reporting the error to the Groovy project:
> https://issues.apache.org/jira/browse/GROOVY
> [ant:groovydoc] ... or directly to the JavaParser project:
> [https://github.com/javaparser/javaparser/issues]
> [ant:groovydoc] Error: (line 55,col 9) Use of patterns with instanceof is not
> supported.
> {noformat}
> The offending code is:
> {code}
> public static String sqlType(Object value, int... varcharSize) {
> if (value instanceof BigDecimal bd) {
> return "DECIMAL(" + bd.precision() + "," + bd.scale() + ")";
> }
> return value == null ? null : sqlType(value.getClass(), varcharSize);
> }
> {code}
> Patterns with instanceof is supported by javaparser:
> {code:groovy}
> @Test
> void testParseInstanceofPattern() {
> String code = """
> class A {
> public static String sqlType(Object value, int... varcharSize) {
> if (value instanceof BigDecimal bd) {
> return "DECIMAL(" + bd.precision() + "," + bd.scale() + ")";
> }
> return value == null ? null : sqlType(value.getClass(),
> varcharSize);
> }
> }
> """;
> ParserConfiguration config = new ParserConfiguration();
> config.setLanguageLevel(LanguageLevel.JAVA_17);
> JavaParser parser = new JavaParser(config);
> CompilationUnit cu = JavaParserAdapter.of(parser).parse(code);
> System.out.println(cu.toString());
> }
> {code}
> This might mean that the groovy gradle plugin is not setting the language
> level based on the tool chain e.g in my build.gradle, I have:
> {code:groovy}
> java {
> toolchain {
> languageVersion = JavaLanguageVersion.of(17)
> }
> }
> {code}
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