public ATObject evalAndReturn(String input) {
try {
ATAbstractGrammar ptree = NATParser._INSTANCE_.base_parse(NATText.atValue(input));
return ptree.meta_eval(ctx_);
} catch (XParseError e) {
fail("Parse error: " + e.getMessage());
} catch (InterpreterException e) {
e.printStackTrace();
fail("Eval error: " + e.getMessage());
}
return null;
}
public void evalAndTestException(String input, Class interpreterExceptionClass) {
try {
ATAbstractGrammar ptree = NATParser._INSTANCE_.base_parse(NATText.atValue(input));
ptree.meta_eval(ctx_);
fail(
"Expected an exception of type "
+ Evaluator.getSimpleName(
interpreterExceptionClass)); // test should throw an exception
} catch (InterpreterException ex) {
if (!interpreterExceptionClass.isInstance(ex)) {
ex.printStackTrace();
fail("Unexpected exception: " + ex.getMessage());
}
}
}
/**
* Loads and evaluates the content of a code snippet file and returns the resulting AmbientTalk
* ATObject. Given a class Foo and the name "snippet", the code file consulted is the file named
* "Foo-snippet" which should be located in the same directory as the Foo.class file.
*/
public static final ATObject evalSnippet(Class forTestClass, String name, ATContext inContext)
throws InterpreterException {
// Backport from JDK 1.4 to 1.3 -> no more URI, construct file directly from URL instead
// Open a stream to the file using the URL
try {
String fileName = Evaluator.getSimpleName(forTestClass) + "-" + name;
InputStream in = forTestClass.getResource(fileName).openStream();
BufferedReader dis = new BufferedReader(new InputStreamReader(in));
StringBuffer fBuf = new StringBuffer();
String line;
while ((line = dis.readLine()) != null) {
fBuf.append(line + "\n");
}
in.close();
// parse and evaluate the code in the proper context and return its result
ATAbstractGrammar source = NATParser.parse(fileName, fBuf.toString());
return source.meta_eval(inContext);
} catch (IOException e) {
fail(e.getMessage());
return Evaluator.getNil();
}
/*try {
File inFile = new File(forTestClass.getResource(Evaluator.getSimpleName(forTestClass) + "-" + name));
// load the code from the file
String code = Evaluator.loadContentOfFile(inFile);
// parse and evaluate the code in the proper context and return its result
ATAbstractGrammar source = NATParser.parse(inFile.getName(), code);
return source.meta_eval(inContext);
} catch (IOException e) {
throw new XIOProblem(e);
} catch (URISyntaxException e) {
fail(e.getMessage());
return NATNil._INSTANCE_;
}*/
}