1 /*
2  * Copyright (c) 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
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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.
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21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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24  */
25 
26 package jdk.jshell;
27 
28 import java.util.ArrayList;
29 import java.util.Collection;
30 import java.util.stream.Collectors;
31 
32 /**
33  * List of diagnostics, with convenient operations.
34  *
35  * @author Robert Field
36  */
37 @SuppressWarnings("serial")             // serialVersionUID intentionally omitted
38 final class DiagList extends ArrayList<Diag> {
39 
40     private int cntNotStmt = 0;
41     private int cntUnreach = 0;
42     private int cntResolve = 0;
43     private int cntOther = 0;
44 
DiagList()45     DiagList() {
46         super();
47     }
48 
DiagList(Diag d)49     DiagList(Diag d) {
50         super();
51         add(d);
52     }
53 
DiagList(Collection<? extends Diag> c)54     DiagList(Collection<? extends Diag> c) {
55         super();
56         addAll(c);
57     }
58 
tally(Diag d)59     private void tally(Diag d) {
60         if (d.isError()) {
61             if (d.isUnreachableError()) {
62                 ++cntUnreach;
63             } else if (d.isNotAStatementError()) {
64                 ++cntNotStmt;
65             } else if (d.isResolutionError()) {
66                 ++cntResolve;
67             } else {
68                 ++cntOther;
69             }
70         }
71     }
72 
73     @Override
addAll(Collection<? extends Diag> c)74     public boolean addAll(Collection<? extends Diag> c) {
75         return c.stream().filter(this::add).count() > 0;
76     }
77 
78     @Override
set(int index, Diag element)79     public Diag set(int index, Diag element) {
80         throw new UnsupportedOperationException();
81     }
82 
83     @Override
add(int index, Diag element)84     public void add(int index, Diag element) {
85         throw new UnsupportedOperationException();
86     }
87 
88     @Override
add(Diag d)89     public boolean add(Diag d) {
90         boolean added = super.add(d);
91         if (added) {
92             tally(d);
93         }
94         return added;
95     }
96 
97     @Override
addAll(int index, Collection<? extends Diag> c)98     public boolean addAll(int index, Collection<? extends Diag> c) {
99         throw new UnsupportedOperationException();
100     }
101 
102     @Override
remove(Object o)103     public boolean remove(Object o) {
104         throw new UnsupportedOperationException();
105     }
106 
ofUnit(Unit u)107     DiagList ofUnit(Unit u) {
108         return this.stream()
109                 .filter(d -> {
110                     Snippet snn = d.snippetOrNull();
111                     return snn == u.snippet();
112                 })
113                 .collect(Collectors.toCollection(DiagList::new));
114     }
115 
hasErrors()116     boolean hasErrors() {
117         return (cntNotStmt + cntResolve + cntUnreach + cntOther) > 0;
118     }
119 
hasResolutionErrorsAndNoOthers()120     boolean hasResolutionErrorsAndNoOthers() {
121         return cntResolve > 0 && (cntNotStmt + cntUnreach + cntOther) == 0;
122     }
123 
hasUnreachableError()124     boolean hasUnreachableError() {
125         return cntUnreach > 0;
126     }
127 
hasNotStatement()128     boolean hasNotStatement() {
129         return cntNotStmt > 0;
130     }
131 
hasOtherThanNotStatementErrors()132     boolean hasOtherThanNotStatementErrors() {
133         return (cntResolve + cntUnreach + cntOther) > 0;
134     }
135 
136 }
137