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/*******************************************************************************
* Copyright (c) 2009, 2021 Mountainminds GmbH & Co. KG and Contributors
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.test.validation;
import java.lang.reflect.InvocationTargetException;
/**
* Executes statements against a given Java object instance.
*/
class StatementExecutor implements StatementParser.IStatementVisitor {
private final Object target;
private final Object[] prefixArgs;
StatementExecutor(Object target, Object... prefixArgs) {
this.target = target;
this.prefixArgs = prefixArgs;
}
public void visitInvocation(String ctx, String name, Object... args) {
args = concat(prefixArgs, args);
try {
target.getClass().getMethod(name, getTypes(args)).invoke(target,
args);
} catch (InvocationTargetException e) {
Throwable te = e.getTargetException();
if (te instanceof AssertionError) {
throw (AssertionError) te;
}
throw new RuntimeException("Invocation error (" + ctx + ")", te);
} catch (Exception e) {
throw new RuntimeException("Invocation error (" + ctx + ")", e);
}
}
private static Object[] concat(Object[] a, Object[] b) {
final Object[] result = new Object[a.length + b.length];
System.arraycopy(a, 0, result, 0, a.length);
System.arraycopy(b, 0, result, a.length, b.length);
return result;
}
private static Class<?>[] getTypes(Object[] instances) {
final Class<?>[] classes = new Class[instances.length];
for (int i = 0; i < instances.length; i++) {
Class<? extends Object> c = instances[i].getClass();
if (c == Integer.class) {
// We always use primitive int parameters:
c = Integer.TYPE;
}
classes[i] = c;
}
return classes;
}
}
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