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package language;
public class Context {
public static void main(String[] argList) {
new C().run();
}
}
class C {
static int MAX = 2;
int i;
C() {
i = 1;
}
public void run() {
try {
more();
} catch (MoreError e) {
// log but continue
System.out.println(e.getMessage());
}
}
private void more() {
i++;
if (i >= MAX) {
i = 0;
throw new MoreError();
}
}
static class MoreError extends Error {
MoreError() {
super("was too much!");
}
}
}
/** @author Erik Hilsdale, Wes Isberg */
aspect A {
// START-SAMPLE language-fieldSetContext Check input and result for a field set.
/**
* Check input and result for a field set.
*/
void around(int input, C targ) : set(int C.i)
&& args(input) && target(targ) {
String m = "setting C.i=" + targ.i + " to " + input;
System.out.println(m);
proceed(input, targ);
if (targ.i != input) {
throw new Error("expected " + input);
}
}
// END-SAMPLE language-fieldSetContext
// START-SAMPLE language-handlerContext Log exception being handled
/**
* Log exception being handled
*/
before (C.MoreError e) : handler(C.MoreError)
&& args(e) && within(C) {
System.out.println("handling " + e);
}
// END-SAMPLE language-handlerContext
// See Initialization.java for constructor call,
// constructor execution, and {pre}-initialization
}
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