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/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
 * freely licensable by each licensor hereunder covering either (i) the
 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
 * is contributed by such licensors),
 *
 * without restriction, including without limitation the rights to copy, create
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
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 * This license is subject to the following condition:
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 * The above copyright notice and either this complete permission notice or at a
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package com.oracle.graal.python.nodes.classes;

import static com.oracle.graal.python.nodes.SpecialAttributeNames.T___BASES__;
import static com.oracle.graal.python.nodes.SpecialMethodNames.T___GETATTRIBUTE__;

import com.oracle.graal.python.builtins.objects.tuple.PTuple;
import com.oracle.graal.python.nodes.PNodeWithContext;
import com.oracle.graal.python.nodes.SpecialMethodNames;
import com.oracle.graal.python.nodes.attributes.LookupInheritedAttributeNode;
import com.oracle.graal.python.nodes.call.CallNode;
import com.oracle.graal.python.nodes.call.special.LookupAndCallBinaryNode;
import com.oracle.graal.python.nodes.object.BuiltinClassProfiles.IsBuiltinObjectProfile;
import com.oracle.graal.python.runtime.exception.PException;
import com.oracle.truffle.api.dsl.Bind;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Cached.Exclusive;
import com.oracle.truffle.api.dsl.GenerateUncached;
import com.oracle.truffle.api.dsl.ImportStatic;
import com.oracle.truffle.api.dsl.NeverDefault;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.frame.Frame;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.nodes.NodeInfo;

@NodeInfo(shortName = "cpython://Objects/abstract.c/abstract_get_bases")
@GenerateUncached
@ImportStatic({SpecialMethodNames.class})
@SuppressWarnings("truffle-inlining")       // footprint reduction 44 -> 26
public abstract class AbstractObjectGetBasesNode extends PNodeWithContext {
    @NeverDefault
    public static AbstractObjectGetBasesNode create() {
        return AbstractObjectGetBasesNodeGen.create();
    }

    protected abstract PTuple executeInternal(Frame frame, Object cls);

    public final PTuple execute(VirtualFrame frame, Object cls) {
        return executeInternal(frame, cls);
    }

    @Specialization(guards = "!isUncached()")
    static PTuple getBasesCached(VirtualFrame frame, Object cls,
                    @Bind("this") Node inliningTarget,
                    @Cached("create(GetAttribute)") LookupAndCallBinaryNode getAttributeNode,
                    @Exclusive @Cached IsBuiltinObjectProfile exceptionMaskProfile) {
        try {
            Object bases = getAttributeNode.executeObject(frame, cls, T___BASES__);
            if (bases instanceof PTuple) {
                return (PTuple) bases;
            }
        } catch (PException pe) {
            pe.expectAttributeError(inliningTarget, exceptionMaskProfile);
        }
        return null;
    }

    @Specialization(replaces = "getBasesCached")
    static PTuple getBasesUncached(VirtualFrame frame, Object cls,
                    @Bind("this") Node inliningTarget,
                    @Cached LookupInheritedAttributeNode.Dynamic lookupGetattributeNode,
                    @Cached CallNode callGetattributeNode,
                    @Exclusive @Cached IsBuiltinObjectProfile exceptionMaskProfile) {
        Object getattr = lookupGetattributeNode.execute(inliningTarget, cls, T___GETATTRIBUTE__);
        try {
            Object bases = callGetattributeNode.execute(frame, getattr, cls, T___BASES__);
            if (bases instanceof PTuple) {
                return (PTuple) bases;
            }
        } catch (PException pe) {
            pe.expectAttributeError(inliningTarget, exceptionMaskProfile);
        }
        return null;
    }
}