InvokeDynamicSpec.groovy

    def "lazy constant evaluation"() {
        given:
            def config = new CompilerConfiguration()
            config.optimizationOptions.indy = true
            def shell = new GroovyShell(config)
        when:
            def method = shell.evaluate '''import groovy.transform.CompileStatic

import java.lang.invoke.CallSite
import java.lang.invoke.ConstantCallSite
import java.lang.invoke.MethodHandles
import java.lang.invoke.MethodType
import static groovyjarjarasm.asm.Opcodes.*

@CompileStatic
class Helper {
    public static CallSite bootstrap(MethodHandles.Lookup lookup, String callType, MethodType type, String methodName) {
        def mh = lookup.findStatic(Helper, methodName, type)
        new ConstantCallSite(mh)
    }

    static int foo() {
        666
    }
}

@groovyx.ast.bytecode.Bytecode
int testConstant() {
    invokedynamic 'experiment', '()I', [H_INVOKESTATIC, 'Helper', 'bootstrap', [CallSite, MethodHandles.Lookup, String, MethodType, String]], 'foo'
    ireturn
}
this.&testConstant'''
        then:
            assert method() == 666
    }