Extracting Parameter in Groovy
This section discusses the Extract Parameter refactoring for Groovy. This refactoring lets you perform the following actions:
- Creating a new method parameter from the selected expression within a method. All the usages of the method will be auto-updated.
- Adding a parameter to a closure. If there is a variable, associated with the closure, the calls to this variable are replaced with the corresponding expressions.
In this section:
Examples
Before | After |
---|---|
class Cat {
Cat cat = new Cat()
def makePestOfItself(){
print ("miaou!!!!!!!!")
}
def makeTroubles(){
if (makePest){
makePestOfItself()
}
}
} | class Cat {
Cat cat = new Cat()
def makePestOfItself(String warning){
print (warning)
}
def makeTroubles(){
if (makePest){
makePestOfItself("miaou!!!!!!!!")
}
}
} |
class Bar {
def foo = {
print 'H<caret here>ello, world!'
}
}
new Bar().foo()
new Bar().foo.call() | class Bar {
def foo = { String s ->
print s
}
}
new Bar().foo('Hello, world!')
new Bar().foo.call('Hello, world!') |
To extract a parameter in Groovy
- In the editor, place the cursor within the expression to be replaced by a parameter.
- Do one of the following:
- Press Ctrl+Alt+P.
- Choose Refactor | Extract | Parameter on the main menu.
- Choose Refactor | Extract | Parameter from the context menu.
- In the Extract Parameter dialog:
- Specify the parameter name in the Name field.
- Choose parameter type, and specify whether you want to declare the new parameter final, and create the overloading method.
- Click OK.
Last modified: 29 November 2017