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8201274: Launch Single-File Source-Code Programs

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Reviewed-by: mcimadamore, jlahoda, ksrini, mchung, ihse, alanb
This commit is contained in:
Jonathan Gibbons 2018-06-07 16:06:49 -07:00
parent 628aec8c75
commit fe24730ed9
17 changed files with 1737 additions and 59 deletions
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17
src/java.base/share/classes/sun/launcher/LauncherHelper.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2007, 2017, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -502,12 +502,13 @@ public final class LauncherHelper {
}
// From src/share/bin/java.c:
// enum LaunchMode { LM_UNKNOWN = 0, LM_CLASS, LM_JAR, LM_MODULE }
// enum LaunchMode { LM_UNKNOWN = 0, LM_CLASS, LM_JAR, LM_MODULE, LM_SOURCE }
private static final int LM_UNKNOWN = 0;
private static final int LM_CLASS = 1;
private static final int LM_JAR = 2;
private static final int LM_MODULE = 3;
private static final int LM_SOURCE = 4;
static void abort(Throwable t, String msgKey, Object... args) {
if (msgKey != null) {
@ -538,13 +539,21 @@ public final class LauncherHelper {
*
* @return the application's main class
*/
@SuppressWarnings("fallthrough")
public static Class<?> checkAndLoadMain(boolean printToStderr,
int mode,
String what) {
initOutput(printToStderr);
Class<?> mainClass = (mode == LM_MODULE) ? loadModuleMainClass(what)
: loadMainClass(mode, what);
Class<?> mainClass = null;
switch (mode) {
case LM_MODULE: case LM_SOURCE:
mainClass = loadModuleMainClass(what);
break;
default:
mainClass = loadMainClass(mode, what);
break;
}
// record the real main class for UI purposes
// neither method above can return null, they will abort()