Showing the changes to java/pkg/sun/tools/tree/LengthExpression.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.util.Hashtable; | ||
| 31 | |||
| 32 | /** | ||
| 33 | * WARNING: The contents of this source file are not part of any | ||
| 34 | * supported API. Code that depends on them does so at its own risk: | ||
| 35 | * they are subject to change or removal without notice. | ||
| 36 | */ | ||
| 37 | public | ||
| 38 | class LengthExpression extends UnaryExpression { | ||
| 39 | /** | ||
| 40 | * Constructor | ||
| 41 | */ | ||
| 42 | public LengthExpression(long where, Expression right) { | ||
| 43 | super(LENGTH, where, Type.tInt, right); | ||
| 44 | } | ||
| 45 | |||
| 46 | /** | ||
| 47 | * Select the type of the expression | ||
| 48 | */ | ||
| 49 | public Vset checkValue(Environment env, Context ctx, Vset vset, Hashtable exp) { | ||
| 50 | vset = right.checkValue(env, ctx, vset, exp); | ||
| 51 | if (!right.type.isType(TC_ARRAY)) { | ||
| 52 | env.error(where, "invalid.length", right.type); | ||
| 53 | } | ||
| 54 | return vset; | ||
| 55 | } | ||
| 56 | |||
| 57 | /** | ||
| 58 | * Code | ||
| 59 | */ | ||
| 60 | public void codeValue(Environment env, Context ctx, Assembler asm) { | ||
| 61 | right.codeValue(env, ctx, asm); | ||
| 62 | asm.add(where, opc_arraylength); | ||
| 63 | } | ||
| 64 | } | ||