java.lang.ArrayIndexOutOfBoundsException during parsing

Hi! I tried to parse a very simple file: class Sample (private val propertyA: String)

using the code from example

fun main() {
    val source = AstSource.File(
        "src/jvmMain/kotlin/sample/Sample.kt"
    )
    val kotlinFile = KotlinGrammarAntlrKotlinParser.parseKotlinFile(source)
    kotlinFile.summary()
        .onSuccess { astList ->
            astList.forEach(Ast::print)
        }.onFailure { errors ->
            errors.forEach(::println)
        }
}

And got such error

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 170
	at kotlinx.ast.parser.antlr.kotlin.AntlrKotlinAstParserImpl.toAstTerminal(AntlrKotlinAstParserImpl.kt:27)
	at kotlinx.ast.parser.antlr.kotlin.AntlrKotlinAstParserImpl.parse(AntlrKotlinAstParserImpl.kt:82)
	at kotlinx.ast.parser.antlr.kotlin.AntlrKotlinAstParserImpl.parse(AntlrKotlinAstParserImpl.kt:75)
	at kotlinx.ast.parser.antlr.kotlin.AntlrKotlinAstParserImplKt.antlrKotlinParser(AntlrKotlinAstParserImpl.kt:138)
	at kotlinx.ast.parser.antlr.kotlin.AntlrKotlinAstParserImplKt.antlrKotlinParser(AntlrKotlinAstParserImpl.kt:98)
	at kotlinx.ast.parser.antlr.kotlin.AntlrKotlinParser.parse(AntlrKotlinParser.kt:20)
	at kotlinx.ast.grammar.kotlin.common.KotlinGrammarParser$DefaultImpls.parseKotlinFile(KotlinGrammarParser.kt:9)
	at kotlinx.ast.grammar.kotlin.target.antlr.kotlin.KotlinGrammarAntlrKotlinParser.parseKotlinFile(KotlinGrammarAntlrKotlinParser.kt:10)
	at sample.MainKt.main(Main.kt:14)
	at sample.MainKt.main(Main.kt)

[drieks]

Hi @VitaSokolova, sorry for the late answer. The build of antlr-kotlin was broken, the version was missing so that the default version was added to gradle metadata. That caused the build of kotlinx.ast to fail. I fixed the kotlinx.ast build here: https://github.com/drieks/antlr-kotlin/commit/b09d76328f7d8c38417174d5621bbdfb52b6405e and the build of kotlinx.ast here: https://github.com/kotlinx/ast/commit/5db757217c18432c65533b943ef36aba650639cc

When you replace this line:

api 'com.github.kotlinx.ast:grammar-kotlin-parser-antlr-kotlin:master'

with:

api 'com.github.kotlinx.ast:grammar-kotlin-parser-antlr-kotlin:5db757217c'

your project should work now.

[drieks]

Hi @VitaSokolova,

your project works fine for me when running in Intellij Idea.

I added a “shadow jar” task to gradle: https://github.com/VitaSokolova/ImpactAnalysisProject/pull/1 (A shadow jar contains all dependencies required to run program)

I also added this to gradle (I don’t know why it is required, it is releated to gradle metadata and should normally be automatically included):

jvmMain {
            dependencies {
                api 'com.github.kotlinx.ast:grammar-kotlin-parser-antlr-kotlin-jvm:5db757217c'
            }
        }

You can now run “gradle clean buildJar” from the command line, or by using the “gradle” tab in Idea, you can click on “ImpactAnalysisProject / Tasks / other / buildJar”. The jar will be created as build/libs/ImpactAnalysisProject.jar.

Please try to run this jar:

java -jar build/libs/ImpactAnalysisProject.jar

This will create this output for me:

java -jar build/libs/ImpactAnalysisProject.jar
PackageHeader(sample)
importList
KlassDeclaration(class Sample)
  KlassDeclaration(constructor)
    KlassDeclaration(val propertyA String)
      KlassModifier(private, visibilityModifier)

If this does not work, please copy the jar into the root folder of the repository and just commit it, I will look into the jar to find the problem.