package ex11;

import ch.usi.dag.disl.annotation.Before;
import ch.usi.dag.disl.dynamiccontext.DynamicContext;
import ch.usi.dag.disl.guardcontext.ReflectionStaticContext;
import ch.usi.dag.disl.marker.BytecodeMarker;
import ch.usi.dag.disl.staticcontext.InstructionStaticContext;
import ch.usi.dag.disl.staticcontext.MethodStaticContext;

public class Instrumentation {
    @Before(marker = BytecodeMarker.class, args = "invokevirtual, invokespecial, invokeinterface", guard = TemporaryGuard.class)
    static void atObjectRefCallSite(final InstructionStaticContext isc,
                                    final MethodStaticContext msc,
                                    final ArgumentLengthStaticContext ivc,
                                    final DynamicContext dc) {
        final Object objectRef = dc.getStackValue(ivc.getArgumentLength(), Object.class);


        final String callTarget = objectRef.getClass().getName().replace('.', '/')
                .concat(".")
                .concat(ivc.getName());

        // TODO: call target signature (handle covariant return types)

        Profiler.registerCall(new Profiler.CallInfo(
                isc.getOpcode(),
                isc.getIndex(),
                msc.thisMethodFullName().concat(msc.thisMethodDescriptor()),
                ivc.getInternalNameWithDescriptor(),
                callTarget
        ));
    }

    @Before(marker = BytecodeMarker.class, args = "invokestatic", guard = TemporaryGuard.class)
    static void atStaticCallSite(final InstructionStaticContext isc,
                                 final MethodStaticContext msc,
                                 final ArgumentLengthStaticContext ivc) {
        Profiler.registerCall(new Profiler.CallInfo(
                isc.getOpcode(),
                isc.getIndex(),
                msc.thisMethodFullName().concat(msc.thisMethodDescriptor()),
                ivc.getInternalNameWithDescriptor(),
                ivc.getInternalNameWithDescriptor()
        ));
    }
}