What you are looking for is the application plugin which allows you build a standalone JVM application including all dependencies and run scripts. apply plugin:’application’ mainClassName=”test.tree.App” EDIT: This should create the uberjar you want: task uberjar(type: Jar) { from files(sourceSets.main.output.classesDir) from configurations.runtime.asFileTree.files.collect { zipTree(it) } manifest { attributes ‘Main-Class’: ‘test.tree.App’ } }
When you have methods or statements outside of a class declaration in a groovy script, an implicit class is created. To answer your questions: In your example, func() can access the field c because they are both members of the implicit class. The Main class is not, so it can’t. You need to pass a … Read more
I only use closures where I need them, i.e. I use methods by default. I do this because Methods are simpler than closures. Closures have a delegate, an owner, retain access to variables that were in their local scope when created (what you call “free variables”). By default method calls within a closure are resolved … Read more
If you just want to add the bye() method to the single instance g of the class Greet, you need to do: g.metaClass.bye = { println “Goodbye, $name” } g.bye() Otherwise, to add bye() to all instance of Greet (from now on), call Greet.metaClass.bye = { println “Goodbye, $name” } But you’d need to do … Read more
You can create directory src/main/groovy, put your script called myscript.groovy in there: println “hello world from groovy version ${GroovySystem.version}” Then, have a build.gradle file in your project root directory: apply plugin: ‘groovy’ repositories { mavenCentral() } dependencies { compile ‘org.codehaus.groovy:groovy-all:2.0.5’ } task runScript (dependsOn: ‘classes’, type: JavaExec) { main = ‘myscript’ classpath = sourceSets.main.runtimeClasspath } … Read more
The << is a left-shift operator. In this scenario, task “task$counter” is a Task object declaration, and << is overloaded as an alias to the doLast method, which appends the closure to the list of actions to perform when executing the task. If you don’t specify the <<, the closure is treated as a configuration … Read more
In Groovy, parentheses are sometimes optional. The first android is passing a closure to a Method. ie: void android( Closure config ) { println “In Android : ${config()}” } android { ‘tim’ } prints : In Android : tim it is the same as calling: android( { ‘tim’ } ) If you put the parens … Read more
AST means Abstract Syntax Tree, which is basically an abstract representation of code / any syntactic structure. A transformation is an action modifying this tree (i.e. transforming the existing AST to a new AST). For more information have a look here: http://en.wikipedia.org/wiki/Abstract_syntax_tree