com.oracle.truffle.js.builtins.ErrorFunctionBuiltins Maven / Gradle / Ivy
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package com.oracle.truffle.js.builtins;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.profiles.InlinedBranchProfile;
import com.oracle.truffle.js.builtins.ErrorFunctionBuiltinsFactory.ErrorCaptureStackTraceNodeGen;
import com.oracle.truffle.js.nodes.access.ErrorStackTraceLimitNode;
import com.oracle.truffle.js.nodes.access.InitErrorObjectNode;
import com.oracle.truffle.js.nodes.function.JSBuiltin;
import com.oracle.truffle.js.nodes.function.JSBuiltinNode;
import com.oracle.truffle.js.runtime.Errors;
import com.oracle.truffle.js.runtime.JSArguments;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.JSRuntime;
import com.oracle.truffle.js.runtime.Strings;
import com.oracle.truffle.js.runtime.UserScriptException;
import com.oracle.truffle.js.runtime.builtins.JSError;
import com.oracle.truffle.js.runtime.builtins.JSFunction;
import com.oracle.truffle.js.runtime.builtins.JSFunctionObject;
import com.oracle.truffle.js.runtime.objects.JSAttributes;
import com.oracle.truffle.js.runtime.objects.JSObject;
import com.oracle.truffle.js.runtime.objects.Undefined;
/**
* Contains builtins for {@linkplain JSError} function (constructor).
*/
public final class ErrorFunctionBuiltins extends JSBuiltinsContainer.Lambda {
public static final JSBuiltinsContainer BUILTINS = new ErrorFunctionBuiltins();
protected ErrorFunctionBuiltins() {
super(JSError.CLASS_NAME);
defineFunction(Strings.CAPTURE_STACK_TRACE, 2, JSAttributes.getDefault(),
(context, builtin) -> ErrorCaptureStackTraceNodeGen.create(context, builtin, args().fixedArgs(2).createArgumentNodes(context)));
}
public abstract static class ErrorCaptureStackTraceNode extends JSBuiltinNode {
@Child private ErrorStackTraceLimitNode stackTraceLimitNode;
@Child private InitErrorObjectNode initErrorObjectNode;
public ErrorCaptureStackTraceNode(JSContext context, JSBuiltin builtin) {
super(context, builtin);
this.initErrorObjectNode = InitErrorObjectNode.create(context);
this.stackTraceLimitNode = ErrorStackTraceLimitNode.create();
}
@Specialization
protected Object captureStackTrace(VirtualFrame frame, Object object, Object skipUpTo,
@Cached InlinedBranchProfile errorProfile) {
if (!JSRuntime.isObject(object)) {
errorProfile.enter(this);
throw Errors.createTypeError("invalid_argument");
}
JSObject obj = (JSObject) object;
if (!JSObject.isExtensible(obj)) {
errorProfile.enter(this);
throw Errors.createTypeError("Cannot define property:stack, object is not extensible.");
}
int stackTraceLimit = stackTraceLimitNode.executeInt();
boolean customSkip = JSFunction.isJSFunction(skipUpTo);
JSFunctionObject skipFramesUpTo = customSkip ? (JSFunctionObject) skipUpTo : (JSFunctionObject) JSArguments.getFunctionObject(frame.getArguments());
UserScriptException ex = UserScriptException.createCapture(obj, getContext().isOptionNashornCompatibilityMode() ? this : null, stackTraceLimit, skipFramesUpTo, customSkip);
initErrorObjectNode.execute(obj, ex, null);
return Undefined.instance;
}
@Override
public boolean countsTowardsStackTraceLimit() {
return false;
}
}
}
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