Showing the changes to java/pkg/sun/tools/tree/InlineReturnStatement.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 sun.tools.asm.Label; | ||
| 31 | import java.io.PrintStream; | ||
| 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 InlineReturnStatement extends Statement { | ||
| 40 | Expression expr; | ||
| 41 | |||
| 42 | /** | ||
| 43 | * Constructor | ||
| 44 | */ | ||
| 45 | public InlineReturnStatement(long where, Expression expr) { | ||
| 46 | super(INLINERETURN, where); | ||
| 47 | this.expr = expr; | ||
| 48 | } | ||
| 49 | |||
| 50 | /** | ||
| 51 | * Get the destination context of a break | ||
| 52 | */ | ||
| 53 | Context getDestination(Context ctx) { | ||
| 54 | for (; ctx != null ; ctx = ctx.prev) { | ||
| 55 | if ((ctx.node != null) && ((ctx.node.op == INLINEMETHOD) || (ctx.node.op == INLINENEWINSTANCE))) { | ||
| 56 | return ctx; | ||
| 57 | } | ||
| 58 | } | ||
| 59 | return null; | ||
| 60 | } | ||
| 61 | |||
| 62 | /** | ||
| 63 | * Inline | ||
| 64 | */ | ||
| 65 | public Statement inline(Environment env, Context ctx) { | ||
| 66 | if (expr != null) { | ||
| 67 | expr = expr.inlineValue(env, ctx); | ||
| 68 | } | ||
| 69 | return this; | ||
| 70 | } | ||
| 71 | |||
| 72 | /** | ||
| 73 | * Create a copy of the statement for method inlining | ||
| 74 | */ | ||
| 75 | public Statement copyInline(Context ctx, boolean valNeeded) { | ||
| 76 | InlineReturnStatement s = (InlineReturnStatement)clone(); | ||
| 77 | if (expr != null) { | ||
| 78 | s.expr = expr.copyInline(ctx); | ||
| 79 | } | ||
| 80 | return s; | ||
| 81 | } | ||
| 82 | |||
| 83 | /** | ||
| 84 | * The cost of inlining this statement | ||
| 85 | */ | ||
| 86 | public int costInline(int thresh, Environment env, Context ctx) { | ||
| 87 | return 1 + ((expr != null) ? expr.costInline(thresh, env, ctx) : 0); | ||
| 88 | } | ||
| 89 | |||
| 90 | /** | ||
| 91 | * Code | ||
| 92 | */ | ||
| 93 | public void code(Environment env, Context ctx, Assembler asm) { | ||
| 94 | if (expr != null) { | ||
| 95 | expr.codeValue(env, ctx, asm); | ||
| 96 | } | ||
| 97 | CodeContext destctx = (CodeContext)getDestination(ctx); | ||
| 98 | asm.add(where, opc_goto, destctx.breakLabel); | ||
| 99 | } | ||
| 100 | |||
| 101 | /** | ||
| 102 | |||
| 103 | */ | ||
| 104 | public void print(PrintStream out, int indent) { | ||
| 105 | super.print(out, indent); | ||
| 106 | out.print("inline-return"); | ||
| 107 | if (expr != null) { | ||
| 108 | out.print(" "); | ||
| 109 | expr.print(out); | ||
| 110 | } | ||
| 111 | out.print(";"); | ||
| 112 | } | ||
| 113 | } | ||