/** Runs a chunk of Lua code from an input stream. */
protected void runChunk(InputStream in) throws IOException {
try {
long start = System.nanoTime();
luaState.setTop(0);
luaState.load(in, "console");
luaState.call(0, LuaState.MULTRET);
long stop = System.nanoTime();
for (int i = 1; i <= luaState.getTop(); i++) {
if (i > 1) {
System.out.print(", ");
}
switch (luaState.type(i)) {
case BOOLEAN:
System.out.print(Boolean.valueOf(luaState.toBoolean(i)));
break;
case NUMBER:
case STRING:
System.out.print(luaState.toString(i));
break;
default:
System.out.print(luaState.typeName(i));
}
}
System.out.print("\t#msec=");
System.out.print(String.format("%.3f", (stop - start) / 1000000.0));
System.out.println();
} catch (LuaRuntimeException e) {
e.printLuaStackTrace();
e.printStackTrace();
} catch (LuaException e) {
System.err.println(e.getMessage());
}
}
/** Tests the call of a Java function which throws a Lua runtime exception. */
@Test
public void testLuaRuntimeException() throws Exception {
// Push function
luaState.pushJavaFunction(new LuaRuntimeExceptionFunction());
// Push arguments
LuaRuntimeException luaRuntimeException = null;
try {
luaState.call(0, 0);
} catch (LuaRuntimeException e) {
luaRuntimeException = e;
}
assertNotNull(luaRuntimeException);
Throwable cause = luaRuntimeException.getCause();
assertNotNull(cause);
assertTrue(cause instanceof LuaRuntimeException);
}
/** Tests the call of a Lua function which invokes the Lua error function. */
@Test
public void testLuaError() throws Exception {
// Load program
luaState.openLibs();
StringBuffer sb = new StringBuffer();
sb.append("function A ()\n");
sb.append(" B()\n");
sb.append("end\n");
sb.append("\n");
sb.append("function B ()\n");
sb.append(" C()\n");
sb.append("end\n");
sb.append("\n");
sb.append("function C ()\n");
sb.append(" error(\"msg\")\n");
sb.append("end\n");
sb.append("\n");
sb.append("A()\n");
luaState.load(sb.toString(), "=testLuaError");
// Run
LuaRuntimeException luaRuntimeException = null;
try {
luaState.call(0, 0);
} catch (LuaRuntimeException e) {
luaRuntimeException = e;
}
assertTrue(luaRuntimeException.getMessage().endsWith("msg"));
LuaStackTraceElement[] luaStackTrace = luaRuntimeException.getLuaStackTrace();
assertEquals(5, luaStackTrace.length);
assertEquals(new LuaStackTraceElement("error", null, -1), luaStackTrace[0]);
assertEquals(new LuaStackTraceElement("C", "testLuaError", 10), luaStackTrace[1]);
assertEquals(new LuaStackTraceElement("B", "testLuaError", 6), luaStackTrace[2]);
assertEquals(new LuaStackTraceElement("A", "testLuaError", 2), luaStackTrace[3]);
assertEquals(new LuaStackTraceElement(null, "testLuaError", 13), luaStackTrace[4]);
}