/*
* Copyright (c) 1994, 2003, 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.tools.tree;
import sun.tools.java.*;
import sun.tools.asm.Assembler;
import java.io.PrintStream;
import java.util.Hashtable;
/**
* WARNING: The contents of this source file are not part of any
* supported API. Code that depends on them does so at its own risk:
* they are subject to change or removal without notice.
*/
public
class ThrowStatement extends Statement {
Expression expr;
/**
* Constructor
*/
public ThrowStatement(long where, Expression expr) {
super(THROW, where);
this.expr = expr;
}
/**
* Check statement
*/
Vset check(Environment env, Context ctx, Vset vset, Hashtable<Object, Object> exp) {
checkLabel(env, ctx);
try {
vset = reach(env, vset);
expr.checkValue(env, ctx, vset, exp);
if (expr.type.isType(TC_CLASS)) {
ClassDeclaration c = env.getClassDeclaration(expr.type);
if (exp.get(c) == null) {
exp.put(c, this);
}
ClassDefinition def = c.getClassDefinition(env);
ClassDeclaration throwable =
env.getClassDeclaration(idJavaLangThrowable);
if (!def.subClassOf(env, throwable)) {
env.error(where, "throw.not.throwable", def);
}
expr = convert(env, ctx, Type.tObject, expr);
} else if (!expr.type.isType(TC_ERROR)) {
env.error(expr.where, "throw.not.throwable", expr.type);
}
} catch (ClassNotFound e) {
env.error(where, "class.not.found", e.name, opNames[op]);
}
CheckContext exitctx = ctx.getTryExitContext();
if (exitctx != null) {
exitctx.vsTryExit = exitctx.vsTryExit.join(vset);
}
return DEAD_END;
}
/**
* Inline
*/
public Statement inline(Environment env, Context ctx) {
expr = expr.inlineValue(env, ctx);
return this;
}
/**
* Create a copy of the statement for method inlining
*/
public Statement copyInline(Context ctx, boolean valNeeded) {
ThrowStatement s = (ThrowStatement)clone();
s.expr = expr.copyInline(ctx);
return s;
}
/**
* The cost of inlining this statement
*/
public int costInline(int thresh, Environment env, Context ctx) {
/**代码未完, 请加载全部代码(NowJava.com).**/