Expression var a=(1 has suggestions ),*,+,-,/ but expression var a=(1+1 should have same suggestions instead if has only *,+,-,/ (without closing parenthesis)

I think it's related to handling of StarLoopbackState somehow.

hi federico,

unfortunately the build fails for me, supposedly due to missing dependencies/private libraries.

... :assemble UP-TO-DATE :kanvas-core:compileKotlin e: /opt/volumes/swentw/kanvas/kanvas-core/src/main/kotlin/LanguageSupport.kt: (3, 22): Unresolved reference: antlr e: /opt/volumes/swentw/kanvas/kanvas-core/src/main/kotlin/LanguageSupport.kt: (63, 56): Unresolved reference: None :kanvas-core:compileKotlin FAILED

Hi! Running the kanvas.kt (Intellij, jdk 1.8) returns a black editor where I can't write anything. I'm still wrapping my mind around Kotlin and swing, so maybe am I missing something? Thanks for all your guides and hard work!

I can see from the build.gradle and the pom that this is released under the MIT license, but it took a little digging. Would you be willing to add the license file at the root folder level to make it clearer?

Thanks and sorry for the trouble.

Two links at the bottom of the readme.md to the https://tomassetti.thisacpb domain don't work but tried with https://tomassetti.me and it worked fine - guessing you updated at some point.

I'm experimenting with Kanvas, trying to reproduce the code from here:

https://tomassetti.me/kanvas-generating-simple-ide-antlr-grammar/

Given the following Kotlin code:

import me.tomassetti.kanvas.BaseLanguageSupport
import me.tomassetti.kanvas.AntlrLexerFactory
import me.tomassetti.kanvas.ParserData
import me.tomassetti.kanvas.Kanvas
import me.tomassetti.kanvas.languageSupportRegistry
import javax.swing.SwingUtilities
import org.antlr.v4.runtime.Lexer
import XParser
import XLexer
import com.strumenta.kolasu.model.Node

class KanvasEditorExpt {
   object langSupport : BaseLanguageSupport<Node>() {
       override val antlrLexerFactory: AntlrLexerFactory
           get() = object : AntlrLexerFactory {
               override fun create(code: String) : Lexer =
                   XLexer(org.antlr.v4.runtime.ANTLRInputStream(code))
           }
       
       override val parserData: ParserData?
           get() =
               ParserData(XParser.ruleNames, XParser.VOCABULARY, XParser._ATN)
       }
       
   fun main(args: Array<String>) {
       languageSupportRegistry.register("X", langSupport)
       
	    val kanvas = Kanvas()
       
	    SwingUtilities.invokeLater {
	        kanvas.createAndShowKanvasGUI()
	        kanvas.addTab("My X", languageSupport = langSupport)
	    }
   }
}

I see this error:

Object 'langSupport' is not abstract and does not implement abstract base class member public abstract val 
 parser: Parser<Node> defined in me.tomassetti.kanvas.BaseLanguageSupport

I built the .jar files below via Gradle:

I’ve cloned from GitHub and built what I think are the relevant libraries (note the versions):

• kanvas-core-0.2.4.jar
• kolasu-core-1.3.11.jar
• rsyntaxtextarea-3.1.3.jar

I saw a different error before using BaseLanguageSupport<Node> instead of BaseLanguageSupport.

Note that with the following in Java:

class MyLanguageSupport extends BaseLanguageSupport<Node> {	
}

I see a slightly different Parser related error:

The type com.strumenta.kolasu.parsing.Parser cannot be resolved. It is indirectly referenced from required .class files

I suspect I should be using something other than Node here, but I need more docs/examples.

A minimal complete example in GitHub including imports and dependencies would help.

Advice welcome. Thanks.

Apologies for what feels like a newbie error. I am only just beginning to work with Kotlin and gradle, and tend to work with Java and Ant mostly.

See also my post on the Strumenta Language Workbench forum re: this.

Thanks.

I'm currently writing my own language and found your tutorial and code for making an editor. I followed the reference implementation of python when writing my code, as I don't code in kotlin.

Here is the repo that contains the editor https://github.com/cliserkad/kdl-editor

I use maven to import this repo and another of my own which contains my language. When trying to run the Editor.kt file in IntelliJ, I encounter a runtime error. Here is the stack trace:

Exception in thread "main" java.io.IOException: Problem reading font data.
	at java.desktop/java.awt.Font.createFont0(Font.java:1177)
	at java.desktop/java.awt.Font.createFont(Font.java:1046)
	at me.tomassetti.kanvas.Kanvas.<init>(kanvas.kt:320)
	at com.xarql.kdl_editor.EditorKt.main(Editor.kt:13)

I looked at the source code for kanvas.kt to see if the problem was related to a default constructor, but it isn't. The value being set isn't in any constructor because it is a constant. I think I could catch the exception and create the font in my code, then pass the font to kanvas's constructor, but then this would still be broken. I checked the .jar that maven downloaded, and it does indeed contain the .ttf file for the font.

I think the underlying issue is that the wrong file is being selected somehow, but I'm unsure. The .ttf file is not corrupt.