com.oracle.graal.python.lib.PySequenceIterSearchNode Maven / Gradle / Ivy
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package com.oracle.graal.python.lib;
import com.oracle.graal.python.builtins.PythonBuiltinClassType;
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.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.BuiltinClassProfiles.IsBuiltinObjectProfile;
import com.oracle.graal.python.nodes.object.GetClassNode;
import com.oracle.graal.python.runtime.exception.PException;
import com.oracle.truffle.api.CompilerDirectives;
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.Specialization;
import com.oracle.truffle.api.frame.Frame;
import com.oracle.truffle.api.nodes.LoopNode;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.profiles.InlinedIntValueProfile;
/**
* Equivalent of CPython's {@code _PySequence_IterSearch}.
*/
@GenerateUncached
@ImportStatic(SpecialMethodSlot.class)
@GenerateInline(inlineByDefault = true)
public abstract class PySequenceIterSearchNode extends PNodeWithContext {
// return # of times obj appears in seq.
public static final int PY_ITERSEARCH_COUNT = 1;
// return 0-based index of first occurrence of obj in seq
public static final int PY_ITERSEARCH_INDEX = 2;
// return 1 if obj in seq, else 0
public static final int PY_ITERSEARCH_CONTAINS = 3;
public final int executeCached(Frame frame, Object container, Object key, int operation) {
return execute(frame, this, container, key, operation);
}
public final int execute(Node inliningTarget, Object container, Object key, int operation) {
return execute(null, inliningTarget, container, key, operation);
}
public abstract int execute(Frame frame, Node inliningTarget, Object container, Object key, int operation);
@Specialization
static int search(Frame frame, Node inliningTarget, Object container, Object key, int operation,
@Cached PyObjectGetIter getIter,
@Cached IsBuiltinObjectProfile noIterProfile,
@Cached PRaiseNode.Lazy raiseNode,
@Cached GetClassNode getIterClass,
@Cached(parameters = "Next", inline = false) LookupSpecialMethodSlotNode lookupIternext,
@Cached IsBuiltinObjectProfile noNextProfile,
@Cached(inline = false) CallUnaryMethodNode callNext,
@Cached(inline = false) PyObjectRichCompareBool.EqNode eqNode,
@Cached IsBuiltinObjectProfile stopIterationProfile,
@Cached InlinedIntValueProfile opProfile) {
Object iterator;
try {
iterator = getIter.execute(frame, inliningTarget, container);
} catch (PException e) {
e.expectTypeError(inliningTarget, noIterProfile);
throw raiseNode.get(inliningTarget).raise(PythonBuiltinClassType.TypeError, ErrorMessages.IS_NOT_A_CONTAINER, container);
}
Object next = PNone.NO_VALUE;
try {
next = lookupIternext.execute(frame, getIterClass.execute(inliningTarget, iterator), iterator);
} catch (PException e) {
e.expect(inliningTarget, PythonBuiltinClassType.AttributeError, noNextProfile);
}
if (next instanceof PNone) {
throw raiseNode.get(inliningTarget).raise(PythonBuiltinClassType.TypeError, ErrorMessages.OBJ_NOT_ITERABLE, iterator);
}
int i = 0;
int n = 0;
boolean wrapped = false;
while (true) {
try {
if (eqNode.compare(frame, inliningTarget, callNext.executeObject(frame, next, iterator), key)) {
switch (opProfile.profile(inliningTarget, operation)) {
case PY_ITERSEARCH_COUNT:
n++;
break;
case PY_ITERSEARCH_INDEX:
if (CompilerDirectives.hasNextTier()) {
LoopNode.reportLoopCount(inliningTarget, wrapped ? Integer.MAX_VALUE : i + 1);
}
if (wrapped) {
throw raiseNode.get(inliningTarget).raise(PythonBuiltinClassType.OverflowError, ErrorMessages.INDEX_EXCEEDS_INT);
} else {
return i;
}
case PY_ITERSEARCH_CONTAINS:
if (CompilerDirectives.hasNextTier()) {
LoopNode.reportLoopCount(inliningTarget, wrapped ? Integer.MAX_VALUE : i + 1);
}
return 1;
}
}
} catch (PException e) {
e.expectStopIteration(inliningTarget, stopIterationProfile);
if (CompilerDirectives.hasNextTier()) {
LoopNode.reportLoopCount(inliningTarget, wrapped ? Integer.MAX_VALUE : i + 1);
}
if (opProfile.profile(inliningTarget, operation) == PY_ITERSEARCH_INDEX) {
throw raiseNode.get(inliningTarget).raise(PythonBuiltinClassType.ValueError, ErrorMessages.X_NOT_IN_SEQUENCE);
}
return n;
}
if (opProfile.profile(inliningTarget, operation) == PY_ITERSEARCH_INDEX && i == Integer.MAX_VALUE) {
wrapped = true;
}
i++;
}
}
@GenerateInline
@GenerateUncached
@GenerateCached(false)
public abstract static class LazyPySequenceIterSeachNode extends Node {
public final PySequenceIterSearchNode get(Node inliningTarget) {
return execute(inliningTarget);
}
protected abstract PySequenceIterSearchNode execute(Node inliningTarget);
@Specialization
static PySequenceIterSearchNode doIt(@Cached(inline = false) PySequenceIterSearchNode node) {
return node;
}
}
}
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