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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
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 * (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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 * The above copyright notice and either this complete permission notice or at a
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package com.oracle.graal.python.lib;

import static com.oracle.graal.python.builtins.PythonBuiltinClassType.TypeError;
import static com.oracle.graal.python.nodes.SpecialMethodNames.T___STR__;
import static com.oracle.graal.python.nodes.StringLiterals.T_FALSE;
import static com.oracle.graal.python.nodes.StringLiterals.T_TRUE;
import static com.oracle.graal.python.nodes.truffle.TruffleStringMigrationHelpers.assertNoJavaString;
import static com.oracle.graal.python.util.PythonUtils.TS_ENCODING;

import com.oracle.graal.python.builtins.PythonBuiltinClassType;
import com.oracle.graal.python.builtins.objects.PNone;
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.classes.IsSubtypeNode;
import com.oracle.graal.python.nodes.object.GetClassNode;
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.strings.TruffleString;

/**
 * Equivalent of CPython's {@code PyObject_Str}. Converts object to a string using its
 * {@code __str__} special method.
 * 

* The output can be either a {@link String} or a {@link PString}. * * @see PyObjectReprAsTruffleStringNode */ @GenerateUncached @GenerateInline(inlineByDefault = true) @GenerateCached @ImportStatic(SpecialMethodSlot.class) public abstract class PyObjectStrAsObjectNode extends PNodeWithContext { public final Object executeCached(Frame frame, Object object) { return execute(frame, this, object); } public abstract Object execute(Frame frame, Node inlineTarget, Object object); public final Object execute(Node inliningTarget, Object object) { return execute(null, inliningTarget, object); } @Specialization static Object str(TruffleString obj) { return obj; } @Specialization static TruffleString str(boolean object) { return object ? T_TRUE : T_FALSE; } @Specialization TruffleString str(long object, @Cached(inline = false) TruffleString.FromLongNode fromLongNode) { return fromLongNode.execute(object, TS_ENCODING, false); } @Specialization(guards = "!isTruffleString(obj)") static Object str(VirtualFrame frame, Node inliningTarget, Object obj, @Cached GetClassNode getClassNode, @Cached(parameters = "Str", inline = false) LookupSpecialMethodSlotNode lookupStr, @Cached(inline = false) CallUnaryMethodNode callStr, @Cached GetClassNode getResultClassNode, @Cached(inline = false) IsSubtypeNode isSubtypeNode, @Cached PRaiseNode.Lazy raiseNode) { Object type = getClassNode.execute(inliningTarget, obj); Object strDescr = lookupStr.execute(frame, type, obj); // All our objects should have __str__ assert strDescr != PNone.NO_VALUE; Object result = callStr.executeObject(frame, strDescr, obj); result = assertNoJavaString(result); if (result instanceof TruffleString || isSubtypeNode.execute(getResultClassNode.execute(inliningTarget, result), PythonBuiltinClassType.PString)) { return result; } else { throw raiseNode.get(inliningTarget).raise(TypeError, ErrorMessages.RETURNED_NON_STRING, T___STR__, result); } } @NeverDefault public static PyObjectStrAsObjectNode create() { return PyObjectStrAsObjectNodeGen.create(); } public static PyObjectStrAsObjectNode getUncached() { return PyObjectStrAsObjectNodeGen.getUncached(); } }





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