/*
 * Minecraft Development for IntelliJ
 *
 * https://mcdev.io/
 *
 * Copyright (C) 2023 minecraft-dev
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, version 3.0 only.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
package com.demonwav.mcdev.platform.mixin.handlers.mixinextras
 
import com.demonwav.mcdev.platform.mixin.inspection.injector.ParameterGroup
import com.demonwav.mcdev.platform.mixin.util.getGenericReturnType
import com.demonwav.mcdev.util.Parameter
import com.intellij.psi.PsiAnnotation
import com.intellij.psi.PsiType
import org.objectweb.asm.tree.AbstractInsnNode
import org.objectweb.asm.tree.ClassNode
import org.objectweb.asm.tree.MethodNode
 
class ModifyReturnValueHandler : MixinExtrasInjectorAnnotationHandler() {
    override val supportedInstructionTypes = listOf(InstructionType.RETURN)
 
    override fun expectedMethodSignature(
        annotation: PsiAnnotation,
        targetClass: ClassNode,
        targetMethod: MethodNode,
        insn: AbstractInsnNode
    ): Pair<ParameterGroup, PsiType>? {
        val returnType = targetMethod.getGenericReturnType(targetClass, annotation.project)
        return ParameterGroup(listOf(Parameter("original", returnType))) to returnType
    }
}