Building Developer Tools with Kotlin

Transcript

1. Building Developer Tools
   with Kotlin and Gradle
   Breandan Considine
   GIDS 2017
   

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2. Why develop tools?
   • Syntax manipulation
   • Typing completions
   • Static code analysis
   • UI/UX components
   • Language support
   • Framework support
   

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3. Why use Kotlin?
   • IntelliJ Platform / Eclipse integration
   • Java language / JVM interoperability
   • Functional programming patterns
   • Simplifies framework interactions
   • Domain specific languages
   • Build tools integration
   

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4. Why use Gradle?
   • Comprehensive tooling support
   • Cross-platform IDE
   • Gradle tooling API
   • Language-native buildscripts
   • Vibrant plugin ecosystem
   • Gradlew is awesome!
   

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5. public class Singleton {
   private Singleton() {}
   private static instance;
   public static Singleton getInstance() {
   if(instance == null)
   instance = new Singleton();
   return instance;
   }
   public void doSomething() {}
   }
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   Singleton pattern: Java
   

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6. Singleton.doSomething()
   Singleton pattern: Java
   Singleton.getInstance().doSomething();
   

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7. Singleton.doSomething()
   object Singleton {
   fun doSomething() {}
   }
   Singleton pattern: Kotlin
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   Lazy Initialization
   

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8. public class Singleton {
   private Singleton() {}
   private static instance;
   public static Singleton getInstance() {
   if(instance == null)
   instance = new Singleton();
   return instance;
   }
   public void doSomething() {}
   }
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   Singleton pattern: Java
   

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9. IntelliJ Platform SDK
   ActionManager.getInstance()
   .getAction("MyAction")…
   MyAction…
   

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10. Kotlin Extensions
    fun String.print(string: String) {
    println(string)
    }
    "hello".print()
    

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11. IntelliJ Platform Kotlin DSL
    1: val panel = panel {
    2: noteRow("Login:")
    3: row("Username:") { userField() }
    4: row("Password:") { passwordField() }
    5: row {
    6: rememberCheckBox()
    7: right {
    8: link("Forgot?") { browse(forgot) }
    9: }
    10: }
    11: noteRow("No account? $signupLink")
    12: }
    

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12. Gradle Script Kotlin (GSK)
    buildscript {
    repositories {
    gradleScriptKotlin()
    }
    dependencies {
    classpath(kotlinModule("gradle-plugin"))
    }
    }
    

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