com.oracle.graal.python.lib.PyNumberFloatNode Maven / Gradle / Ivy
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package com.oracle.graal.python.lib;
import static com.oracle.graal.python.builtins.PythonBuiltinClassType.DeprecationWarning;
import static com.oracle.graal.python.builtins.PythonBuiltinClassType.TypeError;
import static com.oracle.graal.python.nodes.SpecialMethodNames.T___FLOAT__;
import com.oracle.graal.python.builtins.PythonBuiltinClassType;
import com.oracle.graal.python.builtins.modules.WarningsModuleBuiltins;
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.classes.IsSubtypeNode;
import com.oracle.graal.python.nodes.object.BuiltinClassProfiles.InlineIsBuiltinClassProfile;
import com.oracle.graal.python.nodes.object.GetClassNode;
import com.oracle.graal.python.nodes.util.CastToJavaDoubleNode;
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.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 PyNumber_Float}. Converts the argument to a Java {@code double}
* using its {@code __float__} special method. If not available, falls back to {@code __index__}
* special method. If not available, falls back to {@link PyFloatFromString}. Otherwise, raises a
* {@code TypeError}. Can raise {@code OverflowError} when using {@code __index__} and the returned
* integer wouldn't fit into double.
*/
@GenerateUncached
@GenerateInline
@GenerateCached(false)
@ImportStatic(SpecialMethodSlot.class)
public abstract class PyNumberFloatNode extends PNodeWithContext {
public abstract double execute(Frame frame, Node inliningTarget, Object object);
public final double execute(Node inliningTarget, Object object) {
return execute(null, inliningTarget, object);
}
@Specialization
static double doDouble(double object) {
return object;
}
@Specialization
static double doInt(int object) {
return object;
}
@Specialization
static double doLong(long object) {
return object;
}
@Specialization
static double doBoolean(boolean object) {
return object ? 1.0 : 0.0;
}
@Specialization(guards = {"!isDouble(object)", "!isInteger(object)", "!isBoolean(object)"})
@InliningCutoff
static double doObject(VirtualFrame frame, Node inliningTarget, Object object,
@Cached GetClassNode getClassNode,
@Cached(parameters = "Float", inline = false) LookupSpecialMethodSlotNode lookup,
@Cached(inline = false) CallUnaryMethodNode call,
@Cached GetClassNode resultClassNode,
@Cached InlineIsBuiltinClassProfile resultProfile,
@Cached(inline = false) IsSubtypeNode resultSubtypeNode,
@Cached PyIndexCheckNode indexCheckNode,
@Cached PyNumberIndexNode indexNode,
@Cached CastToJavaDoubleNode cast,
@Cached(inline = false) WarningsModuleBuiltins.WarnNode warnNode,
@Cached PRaiseNode.Lazy raiseNode,
@Cached PyFloatFromString fromString) {
Object floatDescr = lookup.execute(frame, getClassNode.execute(inliningTarget, object), object);
if (floatDescr != PNone.NO_VALUE) {
Object result = call.executeObject(frame, floatDescr, object);
Object resultType = resultClassNode.execute(inliningTarget, result);
if (!resultProfile.profileClass(inliningTarget, resultType, PythonBuiltinClassType.PFloat)) {
if (!resultSubtypeNode.execute(resultType, PythonBuiltinClassType.PFloat)) {
throw raiseNode.get(inliningTarget).raise(TypeError, ErrorMessages.RETURNED_NON_FLOAT, object, result);
} else {
warnNode.warnFormat(frame, null, DeprecationWarning, 1,
ErrorMessages.WARN_P_RETURNED_NON_P, object, T___FLOAT__, "float", result, "float");
}
}
return cast.execute(inliningTarget, result);
}
if (indexCheckNode.execute(inliningTarget, object)) {
Object index = indexNode.execute(frame, inliningTarget, object);
return cast.execute(inliningTarget, index);
}
return fromString.execute(frame, inliningTarget, object);
}
}
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