1 /*
   2  * Copyright (c) 2016, 2017, 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 
  24 
  25 
  26 package jdk.tools.jaotc;
  27 
  28 import java.util.HashSet;
  29 import java.util.Iterator;
  30 import java.util.regex.Pattern;
  31 
  32 import jdk.vm.ci.meta.ResolvedJavaMethod;
  33 
  34 /**
  35  * A class encapsulating any user-specified compilation restrictions.
  36  */
  37 final class CompilationSpec {
  38 
  39     /**
  40      * Set of method names to restrict compilation to.
  41      */
  42     private HashSet<String> compileOnlyStrings = new HashSet<>();
  43     private HashSet<Pattern> compileOnlyPatterns = new HashSet<>();
  44 
  45     /**
  46      * Set of method names that should be excluded from compilation.
  47      */
  48     private HashSet<String> excludeStrings = new HashSet<>();
  49     private HashSet<Pattern> excludePatterns = new HashSet<>();
  50 
  51     /**
  52      * Add a {@code compileOnly} directive to the compile-only list.
  53      *
  54      * @param pattern regex or non-regex pattern string
  55      */
  56     void addCompileOnlyPattern(String pattern) {
  57         if (pattern.contains("*")) {
  58             compileOnlyPatterns.add(Pattern.compile(pattern));
  59         } else {
  60             compileOnlyStrings.add(pattern);
  61         }
  62     }
  63 
  64     /**
  65      * Add an {@code exclude} directive to the exclude list.
  66      *
  67      * @param pattern regex or non-regex pattern string
  68      */
  69     void addExcludePattern(String pattern) {
  70         if (pattern.contains("*")) {
  71             excludePatterns.add(Pattern.compile(pattern));
  72         } else {
  73             excludeStrings.add(pattern);
  74         }
  75     }
  76 
  77     /**
  78      * Check if a given method is part of a restrictive compilation.
  79      *
  80      * @param method method to be checked
  81      * @return true or false
  82      */
  83     boolean shouldCompileMethod(ResolvedJavaMethod method) {
  84         if (compileWithRestrictions()) {
  85             // If there are user-specified compileOnly patterns, default action
  86             // is not to compile the method.
  87             boolean compileMethod = compileOnlyStrings.isEmpty() && compileOnlyPatterns.isEmpty();
  88 
  89             // Check if the method matches with any of the specified compileOnly patterns.
  90             String methodName = JavaMethodInfo.uniqueMethodName(method);
  91 
  92             // compileOnly
  93             if (!compileMethod) {
  94                 compileMethod = compileOnlyStrings.contains(methodName);
  95             }
  96             if (!compileMethod) {
  97                 Iterator<Pattern> it = compileOnlyPatterns.iterator();
  98                 while (!compileMethod && it.hasNext()) {
  99                     Pattern pattern = it.next();
 100                     compileMethod = pattern.matcher(methodName).matches();
 101                 }
 102             }
 103 
 104             // exclude
 105             if (compileMethod) {
 106                 compileMethod = !excludeStrings.contains(methodName);
 107             }
 108             if (compileMethod) {
 109                 Iterator<Pattern> it = excludePatterns.iterator();
 110                 while (compileMethod && it.hasNext()) {
 111                     Pattern pattern = it.next();
 112                     compileMethod = !(pattern.matcher(methodName).matches());
 113                 }
 114             }
 115             return compileMethod;
 116         }
 117         return true;
 118     }
 119 
 120     /**
 121      * Return true if compilation restrictions are specified.
 122      */
 123     private boolean compileWithRestrictions() {
 124         return !(compileOnlyStrings.isEmpty() && compileOnlyPatterns.isEmpty() && excludeStrings.isEmpty() && excludePatterns.isEmpty());
 125     }
 126 
 127 }