0N/A/*
2362N/A * Copyright (c) 1994, 2004, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/Apackage sun.tools.tree;
0N/A
0N/Aimport sun.tools.java.*;
0N/Aimport sun.tools.asm.Assembler;
0N/Aimport sun.tools.asm.LocalVariable;
0N/Aimport sun.tools.asm.Label;
0N/Aimport java.io.PrintStream;
0N/Aimport java.util.Hashtable;
0N/A
0N/A/**
0N/A * WARNING: The contents of this source file are not part of any
0N/A * supported API. Code that depends on them does so at its own risk:
0N/A * they are subject to change or removal without notice.
0N/A */
0N/Apublic
0N/Aclass CatchStatement extends Statement {
0N/A int mod;
0N/A Expression texpr;
0N/A Identifier id;
0N/A Statement body;
0N/A LocalMember field;
0N/A
0N/A /**
0N/A * Constructor
0N/A */
0N/A public CatchStatement(long where, Expression texpr, IdentifierToken id, Statement body) {
0N/A super(CATCH, where);
0N/A this.mod = id.getModifiers();
0N/A this.texpr = texpr;
0N/A this.id = id.getName();
0N/A this.body = body;
0N/A }
0N/A /** @deprecated */
0N/A @Deprecated
0N/A public CatchStatement(long where, Expression texpr, Identifier id, Statement body) {
0N/A super(CATCH, where);
0N/A this.texpr = texpr;
0N/A this.id = id;
0N/A this.body = body;
0N/A }
0N/A
0N/A /**
0N/A * Check statement
0N/A */
0N/A Vset check(Environment env, Context ctx, Vset vset, Hashtable exp) {
0N/A vset = reach(env, vset);
0N/A ctx = new Context(ctx, this);
0N/A Type type = texpr.toType(env, ctx);
0N/A
0N/A try {
0N/A if (ctx.getLocalField(id) != null) {
0N/A env.error(where, "local.redefined", id);
0N/A }
0N/A
0N/A if (type.isType(TC_ERROR)) {
0N/A // error message printed out elsewhere
0N/A } else if (!type.isType(TC_CLASS)) {
0N/A env.error(where, "catch.not.throwable", type);
0N/A } else {
0N/A ClassDefinition def = env.getClassDefinition(type);
0N/A if (!def.subClassOf(env,
0N/A env.getClassDeclaration(idJavaLangThrowable))) {
0N/A env.error(where, "catch.not.throwable", def);
0N/A }
0N/A }
0N/A
0N/A field = new LocalMember(where, ctx.field.getClassDefinition(), mod, type, id);
0N/A ctx.declare(env, field);
0N/A vset.addVar(field.number);
0N/A
0N/A return body.check(env, ctx, vset, exp);
0N/A } catch (ClassNotFound e) {
0N/A env.error(where, "class.not.found", e.name, opNames[op]);
0N/A return vset;
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * Inline
0N/A */
0N/A public Statement inline(Environment env, Context ctx) {
0N/A ctx = new Context(ctx, this);
0N/A if (field.isUsed()) {
0N/A ctx.declare(env, field);
0N/A }
0N/A if (body != null) {
0N/A body = body.inline(env, ctx);
0N/A }
0N/A return this;
0N/A }
0N/A
0N/A /**
0N/A * Create a copy of the statement for method inlining
0N/A */
0N/A public Statement copyInline(Context ctx, boolean valNeeded) {
0N/A CatchStatement s = (CatchStatement)clone();
0N/A if (body != null) {
0N/A s.body = body.copyInline(ctx, valNeeded);
0N/A }
0N/A if (field != null) {
0N/A s.field = field.copyInline(ctx);
0N/A }
0N/A return s;
0N/A }
0N/A
0N/A /**
0N/A * Compute cost of inlining this statement
0N/A */
0N/A public int costInline(int thresh, Environment env, Context ctx){
0N/A int cost = 1;
0N/A if (body != null) {
0N/A cost += body.costInline(thresh, env,ctx);
0N/A }
0N/A return cost;
0N/A }
0N/A
0N/A /**
0N/A * Code
0N/A */
0N/A public void code(Environment env, Context ctx, Assembler asm) {
0N/A CodeContext newctx = new CodeContext(ctx, this);
0N/A if (field.isUsed()) {
0N/A newctx.declare(env, field);
0N/A asm.add(where, opc_astore, new LocalVariable(field, field.number));
0N/A } else {
0N/A asm.add(where, opc_pop);
0N/A }
0N/A if (body != null) {
0N/A body.code(env, newctx, asm);
0N/A }
0N/A //asm.add(newctx.breakLabel);
0N/A }
0N/A
0N/A /**
0N/A * Print
0N/A */
0N/A public void print(PrintStream out, int indent) {
0N/A super.print(out, indent);
0N/A out.print("catch (");
0N/A texpr.print(out);
0N/A out.print(" " + id + ") ");
0N/A if (body != null) {
0N/A body.print(out, indent);
0N/A } else {
0N/A out.print("<empty>");
0N/A }
0N/A }
0N/A}