/**
* 调用一个方法
*
* @param methodName 方法名
* @param args 参数
* @throws EvalError
*/
private void callMethod(String methodName, Object[] args) throws EvalError {
if (TextUtils.isEmpty(methodName)) {
return;
}
Class[] classes = getMethodArgumentClass(args);
BshMethod method = getMethod(methodName, classes);
if (method == null) {
L.i("cannot find " + methodName + "() in " + nickName);
return;
}
method.invoke(args, getInterpreter());
}
/**
* Runs a cached block of code in the specified namespace. Faster than evaluating the block each
* time.
*
* @param method The method instance returned by cacheBlock()
* @param namespace The namespace to run the code in
* @return Description of the Return Value
* @exception Exception instances are thrown when various BeanShell errors occur
* @since jEdit 4.1pre1
*/
public Object runCachedBlock(BshMethod method, NameSpace namespace) throws Exception {
boolean useNamespace;
if (namespace == null) {
useNamespace = false;
namespace = global;
} else {
useNamespace = true;
}
try {
setupDefaultVariables(namespace);
Object retVal =
method.invoke(
useNamespace ? new Object[] {namespace} : NO_ARGS, interpForMethods, new CallStack());
if (retVal instanceof Primitive) {
if (retVal == Primitive.VOID) {
return null;
} else {
return ((Primitive) retVal).getValue();
}
} else {
return retVal;
}
} catch (Exception e) {
unwrapException(e);
// never called
return null;
} finally {
resetDefaultVariables(namespace);
}
} // }}}
@Override
public String invoke(final Object[] parameters) throws Exception {
Object result;
synchronized (interpreter) {
result = method.invoke(parameters, interpreter);
}
if (result instanceof String) return ((String) result);
else return (null);
}
public ScriptSingleValueMethodCall(
final Interpreter interpreter,
final BshMethod method,
final String scriptFileName,
int numParameters) {
super(scriptFileName, method.getName(), false, numParameters);
this.interpreter = interpreter;
this.method = method;
if (this.interpreter == null) {
throw new NullPointerException("Interpreter is null.");
} else if (!String.class.isAssignableFrom(this.method.getReturnType())) {
throw new IllegalArgumentException(
"The method's return type has to be assignable to String:\nScript: "
+ scriptFileName
+ "\nMethod: "
+ method.toString());
}
}
