com.oracle.graal.python.lib.PyObjectReprAsObjectNode Maven / Gradle / Ivy
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package com.oracle.graal.python.lib;
import static com.oracle.graal.python.nodes.SpecialMethodNames.T___REPR__;
import static com.oracle.graal.python.nodes.truffle.TruffleStringMigrationHelpers.assertNoJavaString;
import static com.oracle.graal.python.runtime.exception.PythonErrorType.TypeError;
import com.oracle.graal.python.builtins.objects.PNone;
import com.oracle.graal.python.builtins.objects.object.ObjectNodes;
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.object.GetClassNode;
import com.oracle.graal.python.runtime.exception.PException;
import com.oracle.truffle.api.HostCompilerDirectives.InliningCutoff;
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.profiles.InlinedConditionProfile;
import com.oracle.truffle.api.strings.TruffleString;
/**
* Equivalent of CPython's {@code PyObject_Repr}. Converts the object to a string using its
* {@code __repr__} special method. Falls back to default object {@code __repr__} implementation.
*
* The output can be either a {@link TruffleString} or a {@link PString}.
*
* @see PyObjectReprAsTruffleStringNode
*/
@GenerateUncached
@GenerateCached
@GenerateInline(inlineByDefault = true)
@ImportStatic(SpecialMethodSlot.class)
public abstract class PyObjectReprAsObjectNode extends PNodeWithContext {
public static Object executeUncached(Object object) {
return PyObjectReprAsObjectNodeGen.getUncached().execute(null, null, object);
}
public static PyObjectReprAsObjectNode getUncached() {
return PyObjectReprAsObjectNodeGen.getUncached();
}
public final Object executeCached(Frame frame, Object object) {
return execute(frame, this, object);
}
public abstract Object execute(Frame frame, Node inliningTarget, Object object);
@Specialization
static Object repr(VirtualFrame frame, Node inliningTarget, Object obj,
@Cached GetClassNode getClassNode,
@Cached(parameters = "Repr", inline = false) LookupSpecialMethodSlotNode lookupRepr,
@Cached(inline = false) CallUnaryMethodNode callRepr,
@Cached(inline = false) ObjectNodes.DefaultObjectReprNode defaultRepr,
@Cached InlinedConditionProfile isString,
@Cached InlinedConditionProfile isPString,
@Cached PRaiseNode.Lazy raiseNode) {
Object type = getClassNode.execute(inliningTarget, obj);
Object reprMethod;
try {
reprMethod = lookupRepr.execute(frame, type, obj);
} catch (PException e) {
return defaultRepr.execute(frame, inliningTarget, obj);
}
if (reprMethod != PNone.NO_VALUE) {
Object result = callRepr.executeObject(frame, reprMethod, obj);
result = assertNoJavaString(result);
if (isString.profile(inliningTarget, result instanceof TruffleString) ||
isPString.profile(inliningTarget, result instanceof PString)) {
return result;
}
if (result != PNone.NO_VALUE) {
throw raiseTypeError(inliningTarget, obj, raiseNode);
}
}
return defaultRepr.execute(frame, inliningTarget, obj);
}
@InliningCutoff
private static PException raiseTypeError(Node inliningTarget, Object obj, PRaiseNode.Lazy raiseNode) {
throw raiseNode.get(inliningTarget).raise(TypeError, ErrorMessages.RETURNED_NON_STRING, T___REPR__, obj);
}
@NeverDefault
public static PyObjectReprAsObjectNode create() {
return PyObjectReprAsObjectNodeGen.create();
}
}