1/*
2 * Copyright (c) 2005, 2015, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24package jdk.test.lib.jittester.functions;
25
26import java.util.Collection;
27import java.util.LinkedList;
28import java.util.List;
29
30import jdk.test.lib.jittester.IRNode;
31import jdk.test.lib.jittester.Symbol;
32import jdk.test.lib.jittester.SymbolTable;
33import jdk.test.lib.jittester.types.TypeKlass;
34import jdk.test.lib.jittester.visitors.Visitor;
35
36public class FunctionDefinition extends IRNode {
37    private final FunctionInfo functionInfo;
38
39    public FunctionDefinition(FunctionInfo functionInfo,
40                              List<? extends ArgumentDeclaration> argumentsDeclaration, IRNode body, Return ret) {
41        super(functionInfo.type);
42        this.functionInfo = functionInfo;
43        this.owner = functionInfo.owner;
44        addChild(body);
45        addChild(ret);
46        addChildren(argumentsDeclaration);
47    }
48
49    // get the list of all functions from all parents of the given class.
50    public static Collection<Symbol> getFuncsFromParents(TypeKlass typeKlass) {
51        LinkedList<Symbol> result = new LinkedList<>();
52        for (TypeKlass parent : typeKlass.getAllParents()) {
53            result.addAll(SymbolTable.getAllCombined(parent, FunctionInfo.class));
54        }
55        return result;
56    }
57
58    // Check if the given function prototype f1 is a valid overload of
59    // prototypes in collection S.
60    // The override is invalid if function f1 has the same signature as
61    // function f2 in S, but has different return type.
62    public static boolean isInvalidOverride(FunctionInfo f1, Collection<Symbol> symbols) {
63        for (Symbol symbol : symbols) {
64            FunctionInfo f2 = (FunctionInfo) symbol;
65            if (f1.hasEqualSignature(f2)) {
66                if (!f1.type.equals(f2.type)) {
67                    return true;
68                }
69                if ((f2.flags & FunctionInfo.NONRECURSIVE) > 0
70                        || ((f1.flags & FunctionInfo.ABSTRACT) > 0 && (f2.flags & FunctionInfo.ABSTRACT) == 0)
71                        || (f1.flags & FunctionInfo.STATIC) != (f2.flags & FunctionInfo.STATIC)
72                        || (f2.flags & FunctionInfo.FINAL) > 0
73                        || (f1.flags & FunctionInfo.ACCESS_ATTRS_MASK) < (f2.flags & FunctionInfo.ACCESS_ATTRS_MASK)) {
74                    return true;
75                }
76            }
77        }
78        return false;
79    }
80
81    @Override
82    public long complexity() {
83        IRNode body = getChild(0);
84        IRNode ret = getChild(1);
85        return body.complexity() + (ret != null ? ret.complexity() : 0);
86    }
87
88    @Override
89    public<T> T accept(Visitor<T> v) {
90        return v.visit(this);
91    }
92
93    public FunctionInfo getFunctionInfo() {
94        return functionInfo;
95    }
96}
97