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/*
 * Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * 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),
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 * 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
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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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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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package com.oracle.graal.python.lib;

import static com.oracle.graal.python.nodes.SpecialMethodNames.T___REPR__;
import static com.oracle.graal.python.nodes.truffle.TruffleStringMigrationHelpers.assertNoJavaString;
import static com.oracle.graal.python.runtime.exception.PythonErrorType.TypeError;

import com.oracle.graal.python.builtins.objects.PNone;
import com.oracle.graal.python.builtins.objects.object.ObjectNodes;
import com.oracle.graal.python.builtins.objects.str.PString;
import com.oracle.graal.python.builtins.objects.type.SpecialMethodSlot;
import com.oracle.graal.python.nodes.ErrorMessages;
import com.oracle.graal.python.nodes.PNodeWithContext;
import com.oracle.graal.python.nodes.PRaiseNode;
import com.oracle.graal.python.nodes.call.special.CallUnaryMethodNode;
import com.oracle.graal.python.nodes.call.special.LookupSpecialMethodSlotNode;
import com.oracle.graal.python.nodes.object.GetClassNode;
import com.oracle.graal.python.runtime.exception.PException;
import com.oracle.truffle.api.HostCompilerDirectives.InliningCutoff;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.GenerateCached;
import com.oracle.truffle.api.dsl.GenerateInline;
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.profiles.InlinedConditionProfile;
import com.oracle.truffle.api.strings.TruffleString;

/**
 * Equivalent of CPython's {@code PyObject_Repr}. Converts the object to a string using its
 * {@code __repr__} special method. Falls back to default object {@code __repr__} implementation.
 * 

* The output can be either a {@link TruffleString} or a {@link PString}. * * @see PyObjectReprAsTruffleStringNode */ @GenerateUncached @GenerateCached @GenerateInline(inlineByDefault = true) @ImportStatic(SpecialMethodSlot.class) public abstract class PyObjectReprAsObjectNode extends PNodeWithContext { public static Object executeUncached(Object object) { return PyObjectReprAsObjectNodeGen.getUncached().execute(null, null, object); } public static PyObjectReprAsObjectNode getUncached() { return PyObjectReprAsObjectNodeGen.getUncached(); } public final Object executeCached(Frame frame, Object object) { return execute(frame, this, object); } public abstract Object execute(Frame frame, Node inliningTarget, Object object); @Specialization static Object repr(VirtualFrame frame, Node inliningTarget, Object obj, @Cached GetClassNode getClassNode, @Cached(parameters = "Repr", inline = false) LookupSpecialMethodSlotNode lookupRepr, @Cached(inline = false) CallUnaryMethodNode callRepr, @Cached(inline = false) ObjectNodes.DefaultObjectReprNode defaultRepr, @Cached InlinedConditionProfile isString, @Cached InlinedConditionProfile isPString, @Cached PRaiseNode.Lazy raiseNode) { Object type = getClassNode.execute(inliningTarget, obj); Object reprMethod; try { reprMethod = lookupRepr.execute(frame, type, obj); } catch (PException e) { return defaultRepr.execute(frame, inliningTarget, obj); } if (reprMethod != PNone.NO_VALUE) { Object result = callRepr.executeObject(frame, reprMethod, obj); result = assertNoJavaString(result); if (isString.profile(inliningTarget, result instanceof TruffleString) || isPString.profile(inliningTarget, result instanceof PString)) { return result; } if (result != PNone.NO_VALUE) { throw raiseTypeError(inliningTarget, obj, raiseNode); } } return defaultRepr.execute(frame, inliningTarget, obj); } @InliningCutoff private static PException raiseTypeError(Node inliningTarget, Object obj, PRaiseNode.Lazy raiseNode) { throw raiseNode.get(inliningTarget).raise(TypeError, ErrorMessages.RETURNED_NON_STRING, T___REPR__, obj); } @NeverDefault public static PyObjectReprAsObjectNode create() { return PyObjectReprAsObjectNodeGen.create(); } }





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