com.oracle.graal.python.lib.PyObjectGetItem Maven / Gradle / Ivy
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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___CLASS_GETITEM__;
import com.oracle.graal.python.builtins.PythonBuiltinClassType;
import com.oracle.graal.python.builtins.objects.PNone;
import com.oracle.graal.python.builtins.objects.dict.DictBuiltins;
import com.oracle.graal.python.builtins.objects.dict.PDict;
import com.oracle.graal.python.builtins.objects.list.ListBuiltins;
import com.oracle.graal.python.builtins.objects.list.PList;
import com.oracle.graal.python.builtins.objects.tuple.PTuple;
import com.oracle.graal.python.builtins.objects.tuple.TupleBuiltins;
import com.oracle.graal.python.builtins.objects.type.TypeNodes;
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.CallNode;
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.BuiltinClassProfiles.InlineIsBuiltinClassProfile;
import com.oracle.graal.python.nodes.object.GetClassNode;
import com.oracle.graal.python.runtime.object.PythonObjectFactory;
import com.oracle.truffle.api.HostCompilerDirectives.InliningCutoff;
import com.oracle.truffle.api.dsl.Bind;
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.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;
/**
* Equivalent of CPython's {@code PyObject_GetItem}.
*/
@GenerateUncached
@GenerateInline(inlineByDefault = true)
@GenerateCached
public abstract class PyObjectGetItem extends PNodeWithContext {
public static Object executeUncached(Object receiver, Object key) {
return PyObjectGetItemNodeGen.getUncached().execute(null, null, receiver, key);
}
public final Object executeCached(Frame frame, Object object, Object key) {
return execute(frame, this, object, key);
}
public abstract Object execute(Frame frame, Node inliningTarget, Object object, Object key);
@Specialization(guards = "cannotBeOverriddenForImmutableType(object)")
static Object doList(VirtualFrame frame, PList object, Object key,
@Cached ListBuiltins.GetItemNode getItemNode) {
return getItemNode.execute(frame, object, key);
}
@Specialization(guards = "cannotBeOverriddenForImmutableType(object)")
static Object doTuple(VirtualFrame frame, PTuple object, Object key,
@Cached TupleBuiltins.GetItemNode getItemNode) {
return getItemNode.execute(frame, object, key);
}
@InliningCutoff // TODO: inline this probably?
@Specialization(guards = "cannotBeOverriddenForImmutableType(object)")
static Object doDict(VirtualFrame frame, PDict object, Object key,
@Cached DictBuiltins.GetItemNode getItemNode) {
return getItemNode.execute(frame, object, key);
}
@InliningCutoff // no point inlining the complex case
@Specialization(replaces = {"doList", "doTuple", "doDict"})
static Object doGeneric(VirtualFrame frame, Node inliningTarget, Object object, Object key,
@Cached GetClassNode getClassNode,
@Cached(parameters = "GetItem", inline = false) LookupSpecialMethodSlotNode lookupGetItem,
@Cached(inline = false) CallBinaryMethodNode callGetItem,
@Cached(inline = false) LazyPyObjectGetItemClass getItemClass,
@Cached PRaiseNode.Lazy raise) {
Object type = getClassNode.execute(inliningTarget, object);
Object getItem = lookupGetItem.execute(frame, type, object);
if (getItem != PNone.NO_VALUE) {
return callGetItem.executeObject(frame, getItem, object, key);
}
Object item = getItemClass.get(inliningTarget).execute(frame, object, key);
if (item != PNone.NO_VALUE) {
return item;
}
throw raise.get(inliningTarget).raise(TypeError, ErrorMessages.OBJ_NOT_SUBSCRIPTABLE, object);
}
@GenerateUncached
@GenerateCached
@GenerateInline(false)
abstract static class LazyPyObjectGetItemClass extends Node {
public final PyObjectGetItemClass get(Node inliningTarget) {
return execute(inliningTarget);
}
abstract PyObjectGetItemClass execute(Node inliningTarget);
@Specialization
static PyObjectGetItemClass doIt(@Cached PyObjectGetItemClass node) {
return node;
}
}
@GenerateUncached
@GenerateInline(false) // used only lazily
abstract static class PyObjectGetItemClass extends PNodeWithContext {
public abstract Object execute(Frame frame, Object maybeType, Object key);
@Specialization
static Object doGeneric(VirtualFrame frame, Object type, Object key,
@Bind("this") Node inliningTarget,
@Cached TypeNodes.IsTypeNode isTypeNode,
@Cached PyObjectLookupAttr lookupClassGetItem,
@Cached InlineIsBuiltinClassProfile isBuiltinClassProfile,
@Cached PythonObjectFactory factory,
@Cached CallNode callClassGetItem) {
if (isTypeNode.execute(inliningTarget, type)) {
Object classGetitem = lookupClassGetItem.execute(frame, inliningTarget, type, T___CLASS_GETITEM__);
if (classGetitem != PNone.NO_VALUE) {
return callClassGetItem.execute(frame, classGetitem, key);
}
if (isBuiltinClassProfile.profileClass(inliningTarget, type, PythonBuiltinClassType.PythonClass)) {
// Special case type[int], but disallow other types so str[int] fails
return factory.createGenericAlias(type, key);
}
}
return PNone.NO_VALUE;
}
}
@NeverDefault
public static PyObjectGetItem create() {
return PyObjectGetItemNodeGen.create();
}
public static PyObjectGetItem getUncached() {
return PyObjectGetItemNodeGen.getUncached();
}
}
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