add node for PyObject_DelItem

Author: timfel

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/lib/PyObjectDelItem.java

@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2021, 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
+ *
+ * (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
+ * derivative works of, display, perform, and distribute the Software and make,
+ * use, sell, offer for sale, import, export, have made, and have sold the
+ * Software and the Larger Work(s), and to sublicense the foregoing rights on
+ * either these or other terms.
+ *
+ * This license is subject to the following condition:
+ *
+ * The above copyright notice and either this complete permission notice or at a
+ * minimum a reference to the UPL must be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.oracle.graal.python.lib;
+
+import static com.oracle.graal.python.builtins.PythonBuiltinClassType.TypeError;
+
+import com.oracle.graal.python.builtins.objects.PNone;
+import com.oracle.graal.python.builtins.objects.type.SpecialMethodSlot;
+import com.oracle.graal.python.nodes.ErrorMessages;
+import com.oracle.graal.python.nodes.PRaiseNode;
+import com.oracle.graal.python.nodes.attributes.LookupCallableSlotInMRONode;
+import com.oracle.graal.python.nodes.call.special.CallBinaryMethodNode;
+import com.oracle.graal.python.nodes.call.special.LookupSpecialMethodSlotNode;
+import com.oracle.graal.python.nodes.object.GetClassNode;
+import com.oracle.truffle.api.dsl.Cached;
+import com.oracle.truffle.api.dsl.GenerateUncached;
+import com.oracle.truffle.api.dsl.ImportStatic;
+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;
+
+/**
+ * Equivalent to use for PyObject_DelItem.
+ */
+@GenerateUncached
+@ImportStatic(SpecialMethodSlot.class)
+public abstract class PyObjectDelItem extends Node {
+    public abstract void execute(Frame frame, Object container, Object index);
+
+    @Specialization
+    static void doWithFrame(VirtualFrame frame, Object primary, Object index,
+                    @Cached GetClassNode getClassNode,
+                    @Cached("create(DelItem)") LookupSpecialMethodSlotNode lookupDelitem,
+                    @Cached PRaiseNode raise,
+                    @Cached CallBinaryMethodNode callDelitem) {
+        Object setitem = lookupDelitem.execute(frame, getClassNode.execute(primary), primary);
+        if (setitem == PNone.NO_VALUE) {
+            throw raise.raise(TypeError, ErrorMessages.OBJ_DOESNT_SUPPORT_DELETION, primary);
+        }
+        callDelitem.executeObject(frame, setitem, primary, index);
+    }
+
+    @Specialization(replaces = "doWithFrame")
+    static void doGeneric(Object primary, Object index,
+                    @Cached GetClassNode getClassNode,
+                    @Cached(parameters = "DelItem") LookupCallableSlotInMRONode lookupDelitem,
+                    @Cached PRaiseNode raise,
+                    @Cached CallBinaryMethodNode callDelitem) {
+        Object setitem = lookupDelitem.execute(getClassNode.execute(primary));
+        if (setitem == PNone.NO_VALUE) {
+            throw raise.raise(TypeError, ErrorMessages.OBJ_DOESNT_SUPPORT_DELETION, primary);
+        }
+        callDelitem.executeObject(null, setitem, primary, index);
+    }
+
+    public static PyObjectDelItem create() {
+        return PyObjectDelItemNodeGen.create();
+    }
+
+    public static PyObjectDelItem getUncached() {
+        return PyObjectDelItemNodeGen.getUncached();
+    }
+}