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| 1 | +/* |
| 2 | + * Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved. |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | + * |
| 5 | + * The Universal Permissive License (UPL), Version 1.0 |
| 6 | + * |
| 7 | + * Subject to the condition set forth below, permission is hereby granted to any |
| 8 | + * person obtaining a copy of this software, associated documentation and/or |
| 9 | + * data (collectively the "Software"), free of charge and under any and all |
| 10 | + * copyright rights in the Software, and any and all patent rights owned or |
| 11 | + * freely licensable by each licensor hereunder covering either (i) the |
| 12 | + * unmodified Software as contributed to or provided by such licensor, or (ii) |
| 13 | + * the Larger Works (as defined below), to deal in both |
| 14 | + * |
| 15 | + * (a) the Software, and |
| 16 | + * |
| 17 | + * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if |
| 18 | + * one is included with the Software each a "Larger Work" to which the Software |
| 19 | + * is contributed by such licensors), |
| 20 | + * |
| 21 | + * without restriction, including without limitation the rights to copy, create |
| 22 | + * derivative works of, display, perform, and distribute the Software and make, |
| 23 | + * use, sell, offer for sale, import, export, have made, and have sold the |
| 24 | + * Software and the Larger Work(s), and to sublicense the foregoing rights on |
| 25 | + * either these or other terms. |
| 26 | + * |
| 27 | + * This license is subject to the following condition: |
| 28 | + * |
| 29 | + * The above copyright notice and either this complete permission notice or at a |
| 30 | + * minimum a reference to the UPL must be included in all copies or substantial |
| 31 | + * portions of the Software. |
| 32 | + * |
| 33 | + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 34 | + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 35 | + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 36 | + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 37 | + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 38 | + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 39 | + * SOFTWARE. |
| 40 | + */ |
| 41 | +package com.oracle.graal.python.lib; |
| 42 | + |
| 43 | +import static com.oracle.graal.python.builtins.PythonBuiltinClassType.TypeError; |
| 44 | + |
| 45 | +import com.oracle.graal.python.builtins.objects.PNone; |
| 46 | +import com.oracle.graal.python.builtins.objects.cext.PythonAbstractNativeObject; |
| 47 | +import com.oracle.graal.python.builtins.objects.cext.capi.CExtNodes; |
| 48 | +import com.oracle.graal.python.builtins.objects.cext.capi.ExternalFunctionNodes; |
| 49 | +import com.oracle.graal.python.builtins.objects.cext.capi.NativeCAPISymbol; |
| 50 | +import com.oracle.graal.python.builtins.objects.cext.capi.transitions.CApiTransitions; |
| 51 | +import com.oracle.graal.python.nodes.ErrorMessages; |
| 52 | +import com.oracle.graal.python.nodes.PNodeWithRaiseAndIndirectCall; |
| 53 | +import com.oracle.graal.python.nodes.PRaiseNode; |
| 54 | +import com.oracle.graal.python.nodes.call.special.CallBinaryMethodNode; |
| 55 | +import com.oracle.graal.python.nodes.call.special.LookupSpecialMethodSlotNode; |
| 56 | +import com.oracle.graal.python.nodes.object.InlinedGetClassNode; |
| 57 | +import com.oracle.graal.python.runtime.ExecutionContext; |
| 58 | +import com.oracle.graal.python.runtime.PythonContext; |
| 59 | +import com.oracle.truffle.api.dsl.Bind; |
| 60 | +import com.oracle.truffle.api.dsl.Cached; |
| 61 | +import com.oracle.truffle.api.dsl.Specialization; |
| 62 | +import com.oracle.truffle.api.frame.Frame; |
| 63 | +import com.oracle.truffle.api.frame.VirtualFrame; |
| 64 | +import com.oracle.truffle.api.nodes.Node; |
| 65 | + |
| 66 | +/** |
| 67 | + * Equivalent of CPython's {@code PySequence_GetItem}. For native object it would only call |
| 68 | + * {@code sq_item} and never {@code mp_item}. |
| 69 | + */ |
| 70 | +public abstract class PySequenceGetItemNode extends PNodeWithRaiseAndIndirectCall { |
| 71 | + public abstract Object execute(Frame frame, Object object, int index); |
| 72 | + |
| 73 | + @Specialization(guards = "!isNativeObject(object)") |
| 74 | + static Object doGenericManaged(VirtualFrame frame, Object object, int index, |
| 75 | + @Bind("this") Node inliningTarget, |
| 76 | + @Cached InlinedGetClassNode getClassNode, |
| 77 | + @Cached PySequenceCheckNode sequenceCheckNode, |
| 78 | + @Cached PyMappingCheckNode mappingCheckNode, |
| 79 | + @Cached(parameters = "GetItem") LookupSpecialMethodSlotNode lookupGetItem, |
| 80 | + @Cached CallBinaryMethodNode callGetItem, |
| 81 | + @Cached PRaiseNode.Lazy raise) { |
| 82 | + if (sequenceCheckNode.execute(object)) { |
| 83 | + Object type = getClassNode.execute(inliningTarget, object); |
| 84 | + Object getItem = lookupGetItem.execute(frame, type, object); |
| 85 | + assert getItem != PNone.NO_VALUE; |
| 86 | + return callGetItem.executeObject(frame, getItem, object, index); |
| 87 | + } |
| 88 | + if (mappingCheckNode.execute(object)) { |
| 89 | + throw raise.get(inliningTarget).raise(TypeError, ErrorMessages.IS_NOT_A_SEQUENCE, object); |
| 90 | + } else { |
| 91 | + throw raise.get(inliningTarget).raise(TypeError, ErrorMessages.OBJ_DOES_NOT_SUPPORT_INDEXING, object); |
| 92 | + } |
| 93 | + } |
| 94 | + |
| 95 | + @Specialization |
| 96 | + Object doNative(VirtualFrame frame, PythonAbstractNativeObject object, int index, |
| 97 | + @Bind("this") Node inliningTarget, |
| 98 | + @Cached CApiTransitions.PythonToNativeNode toNativeNode, |
| 99 | + @Cached CApiTransitions.NativeToPythonNode toPythonNode, |
| 100 | + @Cached CExtNodes.PCallCapiFunction callGetItem, |
| 101 | + @Cached ExternalFunctionNodes.DefaultCheckFunctionResultNode checkFunctionResultNode) { |
| 102 | + Object savedState = ExecutionContext.IndirectCallContext.enter(frame, this); |
| 103 | + try { |
| 104 | + Object nativeResult = callGetItem.call(NativeCAPISymbol.FUN_PY_TRUFFLE_PY_SEQUENCE_GET_ITEM, toNativeNode.execute(object), index); |
| 105 | + checkFunctionResultNode.execute(PythonContext.get(inliningTarget), NativeCAPISymbol.FUN_PY_TRUFFLE_PY_SEQUENCE_GET_ITEM.getTsName(), nativeResult); |
| 106 | + return toPythonNode.execute(nativeResult); |
| 107 | + } finally { |
| 108 | + ExecutionContext.IndirectCallContext.exit(frame, this, savedState); |
| 109 | + } |
| 110 | + } |
| 111 | +} |
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