Showing the changes to java/pkg/sun/tools/tree/ThrowStatement.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.tools.tree; | |
| 27 | + | |
| 28 | +import sun.tools.java.*; | |
| 29 | +import sun.tools.asm.Assembler; | |
| 30 | +import java.io.PrintStream; | |
| 31 | +import java.util.Hashtable; | |
| 32 | + | |
| 33 | +/** | |
| 34 | + * WARNING: The contents of this source file are not part of any | |
| 35 | + * supported API. Code that depends on them does so at its own risk: | |
| 36 | + * they are subject to change or removal without notice. | |
| 37 | + */ | |
| 38 | +public | |
| 39 | +class ThrowStatement extends Statement { | |
| 40 | + Expression expr; | |
| 41 | + | |
| 42 | + /** | |
| 43 | + * Constructor | |
| 44 | + */ | |
| 45 | + public ThrowStatement(long where, Expression expr) { | |
| 46 | + super(THROW, where); | |
| 47 | + this.expr = expr; | |
| 48 | + } | |
| 49 | + | |
| 50 | + /** | |
| 51 | + * Check statement | |
| 52 | + */ | |
| 53 | + Vset check(Environment env, Context ctx, Vset vset, Hashtable exp) { | |
| 54 | + checkLabel(env, ctx); | |
| 55 | + try { | |
| 56 | + vset = reach(env, vset); | |
| 57 | + expr.checkValue(env, ctx, vset, exp); | |
| 58 | + if (expr.type.isType(TC_CLASS)) { | |
| 59 | + ClassDeclaration c = env.getClassDeclaration(expr.type); | |
| 60 | + if (exp.get(c) == null) { | |
| 61 | + exp.put(c, this); | |
| 62 | + } | |
| 63 | + ClassDefinition def = c.getClassDefinition(env); | |
| 64 | + ClassDeclaration throwable = | |
| 65 | + env.getClassDeclaration(idJavaLangThrowable); | |
| 66 | + if (!def.subClassOf(env, throwable)) { | |
| 67 | + env.error(where, "throw.not.throwable", def); | |
| 68 | + } | |
| 69 | + expr = convert(env, ctx, Type.tObject, expr); | |
| 70 | + } else if (!expr.type.isType(TC_ERROR)) { | |
| 71 | + env.error(expr.where, "throw.not.throwable", expr.type); | |
| 72 | + } | |
| 73 | + } catch (ClassNotFound e) { | |
| 74 | + env.error(where, "class.not.found", e.name, opNames[op]); | |
| 75 | + } | |
| 76 | + CheckContext exitctx = ctx.getTryExitContext(); | |
| 77 | + if (exitctx != null) { | |
| 78 | + exitctx.vsTryExit = exitctx.vsTryExit.join(vset); | |
| 79 | + } | |
| 80 | + return DEAD_END; | |
| 81 | + } | |
| 82 | + | |
| 83 | + /** | |
| 84 | + * Inline | |
| 85 | + */ | |
| 86 | + public Statement inline(Environment env, Context ctx) { | |
| 87 | + expr = expr.inlineValue(env, ctx); | |
| 88 | + return this; | |
| 89 | + } | |
| 90 | + | |
| 91 | + /** | |
| 92 | + * Create a copy of the statement for method inlining | |
| 93 | + */ | |
| 94 | + public Statement copyInline(Context ctx, boolean valNeeded) { | |
| 95 | + ThrowStatement s = (ThrowStatement)clone(); | |
| 96 | + s.expr = expr.copyInline(ctx); | |
| 97 | + return s; | |
| 98 | + } | |
| 99 | + | |
| 100 | + /** | |
| 101 | + * The cost of inlining this statement | |
| 102 | + */ | |
| 103 | + public int costInline(int thresh, Environment env, Context ctx) { | |
| 104 | + return 1 + expr.costInline(thresh, env, ctx); | |
| 105 | + } | |
| 106 | + | |
| 107 | + /** | |
| 108 | + * Code | |
| 109 | + */ | |
| 110 | + public void code(Environment env, Context ctx, Assembler asm) { | |
| 111 | + expr.codeValue(env, ctx, asm); | |
| 112 | + asm.add(where, opc_athrow); | |
| 113 | + } | |
| 114 | + | |
| 115 | + /** | |
| 116 | ||
| 117 | + */ | |
| 118 | + public void print(PrintStream out, int indent) { | |
| 119 | + super.print(out, indent); | |
| 120 | + out.print("throw "); | |
| 121 | + expr.print(out); | |
| 122 | + out.print(":"); | |
| 123 | + } | |
| 124 | +} | |