package de.dhbwstuttgart.target.tree;

import de.dhbwstuttgart.target.tree.expression.TargetBlock;
import de.dhbwstuttgart.target.tree.type.TargetType;
import org.objectweb.asm.Opcodes;

import java.util.List;
import java.util.Set;

public record TargetMethod(int access, String name, TargetBlock block, Signature signature, Signature txSignature) {
    public record Signature(Set<TargetGeneric> generics, List<MethodParameter> parameters, TargetType returnType) { }

    public static String getDescriptor(TargetType returnType, TargetType... parameters) {
        String ret = "(";
        for (var parameterType : parameters) {
            ret += parameterType.toSignature();
        }
        ret += ")";
        if (returnType == null) ret += "V";
        else ret += returnType.toSignature();
        return ret;
    }

    public static String getSignature(Set<TargetGeneric> generics, List<MethodParameter> parameters, TargetType returnType) {
        String ret = "";
        if (generics.size() > 0) {
            ret += "<";
            for (var generic : generics) {
                ret += generic.name() + ":" + generic.bound().toDescriptor();
            }
            ret += ">";
        }
        ret += "(";
        for (var param : parameters) {
            ret += param.pattern().type().toDescriptor();
        }
        ret += ")";
        if (returnType == null) ret += "V";
        else ret += returnType.toDescriptor();
        return ret;
    }

    public String getDescriptor() {
        return getDescriptor(signature.returnType, signature.parameters.stream().map(mp -> mp.pattern().type()).toArray(TargetType[]::new));
    }

    public String getSignature() {
        return getSignature(signature.generics, signature.parameters, signature.returnType);
    }

    public String getTXSignature() {
        return getSignature(txSignature.generics, txSignature.parameters, txSignature.returnType);
    }

    public boolean isStatic() {
        return (access & Opcodes.ACC_STATIC) != 0;
    }
}