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/*
* Copyright (c) 2018, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* The Universal Permissive License (UPL), Version 1.0
*
* Subject to the condition set forth below, permission is hereby granted to any
* person obtaining a copy of this software, associated documentation and/or
* data (collectively the "Software"), free of charge and under any and all
* copyright rights in the Software, and any and all patent rights owned or
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* unmodified Software as contributed to or provided by such licensor, or (ii)
* the Larger Works (as defined below), to deal in both
*
* (a) the Software, and
*
* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
* one is included with the Software each a "Larger Work" to which the Software
* is contributed by such licensors),
*
* without restriction, including without limitation the rights to copy, create
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* Software and the Larger Work(s), and to sublicense the foregoing rights on
* either these or other terms.
*
* This license is subject to the following condition:
*
* The above copyright notice and either this complete permission notice or at a
* minimum a reference to the UPL must be included in all copies or substantial
* portions of the Software.
*
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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package org.graalvm.polyglot.management;
import java.util.List;
import org.graalvm.polyglot.PolyglotException;
import org.graalvm.polyglot.SourceSection;
import org.graalvm.polyglot.Value;
import org.graalvm.polyglot.impl.AbstractPolyglotImpl.AbstractExecutionEventDispatch;
/**
* An execution event object passed to an execution listener consumer. Execution event instances
* remain valid until the engine is closed. Values and returned exceptions will only remain valid
* until the context was closed.
*
* @see ExecutionListener For further details.
* @since 19.0
*/
public final class ExecutionEvent {
final AbstractExecutionEventDispatch dispatch;
final Object receiver;
ExecutionEvent(AbstractExecutionEventDispatch dispatch, Object receiver) {
this.dispatch = dispatch;
this.receiver = receiver;
}
/**
* Returns the source location of the event that was triggered or null if no
* location source location is available.
*
* @since 19.0
*/
public SourceSection getLocation() {
return dispatch.getExecutionEventLocation(receiver);
}
/**
* Returns the root name or null if no name is available. The root name may also be
* available for events caused by expressions and statements. In this case the name of the
* containing root will be returned.
*
* @since 19.0
*/
public String getRootName() {
return dispatch.getExecutionEventRootName(receiver);
}
/**
* Returns the input values provided to execute this source location. This method returns
* null if input value collection is not
* {@link ExecutionListener.Builder#collectInputValues(boolean) enabled}. Input values are
* available in {@link ExecutionListener.Builder#onReturn(java.util.function.Consumer) OnReturn}
* events.The returned list may contain null values if input values were not
* evaluated or if an exception occurred executing input values. The returned list is
* unmodifiable. The returned input values may escape the event consumer and remain valid until
* the context is closed.
*
* @since 19.0
*/
public List getInputValues() {
return dispatch.getExecutionEventInputValues(receiver);
}
/**
* Returns the return value of this source location after it was executed. This method returns
* null if return value collection is not
* {@link ExecutionListener.Builder#collectReturnValue(boolean) enabled}. Return values are
* available in {@link ExecutionListener.Builder#onReturn(java.util.function.Consumer) OnReturn}
* events. The returned value is allowed to escape the event consumer and remain valid until the
* context is closed.
*
* @since 19.0
*/
public Value getReturnValue() {
return dispatch.getExecutionEventReturnValue(receiver);
}
/**
* Returns the exception of this source location after it was executed. This method returns
* null if exception collection is not
* {@link ExecutionListener.Builder#collectExceptions(boolean) enabled}. Exceptions are only
* available in {@link ExecutionListener.Builder#onReturn(java.util.function.Consumer) OnReturn}
* events if an exception was thrown when the location was executed. The returned value is
* allowed to escape the event consumer and remains valid until the context is closed.
*
* @since 19.0
*/
public PolyglotException getException() {
return dispatch.getExecutionEventException(receiver);
}
/**
* Returns true if the source location is marked as expression, else
* false. The collection of expression events may be enabled by calling
* {@link ExecutionListener.Builder#expressions(boolean)}.
*
* @since 19.0
*/
public boolean isExpression() {
return dispatch.isExecutionEventExpression(receiver);
}
/**
* Returns true if the source location is marked as a statement, else
* false. The collection of statement events may be enabled by calling
* {@link ExecutionListener.Builder#statements(boolean)}.
*
* @since 19.0
*/
public boolean isStatement() {
return dispatch.isExecutionEventStatement(receiver);
}
/**
* Returns true if the source location is marked as a root of a function, method or
* closure, else false. The collection of root events may be enabled by calling
* {@link ExecutionListener.Builder#roots(boolean)}.
*
* @since 19.0
*/
public boolean isRoot() {
return dispatch.isExecutionEventRoot(receiver);
}
/**
* {@inheritDoc}
*
* @since 19.0
*/
@Override
public String toString() {
StringBuilder b = new StringBuilder("ExecutionEvent[");
if (isRoot()) {
b.append("root").append(", ");
}
if (isStatement()) {
b.append("statement").append(", ");
}
if (isExpression()) {
b.append("expression").append(", ");
}
String rootName = getRootName();
if (rootName != null) {
b.append("rootName=").append(rootName).append(", ");
}
List inputValues = getInputValues();
if (inputValues != null) {
b.append("inputValues=").append(inputValues).append(", ");
}
Value returnValue = getReturnValue();
if (returnValue != null) {
b.append("returnValue=").append(returnValue).append(", ");
}
PolyglotException exception = getException();
if (exception != null) {
b.append("exception=").append(exception).append(", ");
}
b.append("location=").append(getLocation());
b.append("]");
return b.toString();
}
}
