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glaforge/gist:4563430

Last active Aug 10, 2016
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@interface Min {
int value() default 0
}
@interface Max {
int value() default 100
}
import org.codehaus.groovy.transform.AnnotationCollectorTransform
import org.codehaus.groovy.ast.*
import org.codehaus.groovy.control.SourceUnit
class RangeAnnotationProcessor extends AnnotationCollectorTransform {
List<AnnotationNode> visit(AnnotationNode collector, AnnotationNode usage, AnnotatedNode annotated, SourceUnit src) {
def minExpr = usage.getMember('from')
def maxExpr = usage.getMember('to')
def (minAnno, maxAnno) = getTargetAnnotationList(collector, usage, src)
minAnno.addMember('value', minExpr)
maxAnno.addMember('value', maxExpr)
usage.members.remove('from')
usage.members.remove('to')
return [minAnno, maxAnno]
}
}
new GroovyShell(this.class.classLoader).evaluate '''
import groovy.transform.AnnotationCollector
@Min @Max
@AnnotationCollector(processor = 'RangeAnnotationProcessor')
@interface Range {}
class Room {
@Range(from = 1, to = 4)
int numberOfPersons
}
println new Room()
'''
@Wadeck

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@Wadeck Wadeck commented Jun 24, 2015

How do you manage the case of a processor that have a package ?

In my case, I have a "standard" structure of package, but I can't link the processor to the annotation. I tried the class full name (with package) and simple name (like your example).

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