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