/*
 * 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
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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.
/** * 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
/** * Constructor */
public ThrowStatement(long where, Expression expr) { super(THROW, where); this.expr = expr; }
Check statement
/** * 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
/** * Inline */
public Statement inline(Environment env, Context ctx) { expr = expr.inlineValue(env, ctx); return this; }
Create a copy of the statement for method inlining
/** * 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
/** * The cost of inlining this statement */
public int costInline(int thresh, Environment env, Context ctx) { return 1 + expr.costInline(thresh, env, ctx); }
Code
/** * Code */
public void code(Environment env, Context ctx, Assembler asm) { expr.codeValue(env, ctx, asm); asm.add(where, opc_athrow); }
Print
/** * Print */
public void print(PrintStream out, int indent) { super.print(out, indent); out.print("throw "); expr.print(out); out.print(":"); } }