buildSrc/src/main/java/cc/squirreljme/plugin/multivm/VMLibraryTaskUpToDate.java

   1 // -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
   2 // ---------------------------------------------------------------------------
   3 // SquirrelJME
   4 //     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
   5 // ---------------------------------------------------------------------------
   6 // SquirrelJME is under the GNU General Public License v3+, or later.
   7 // See license.mkd for licensing and copyright information.
   8 // ---------------------------------------------------------------------------
   9
  10 package cc.squirreljme.plugin.multivm;
  11
  12 import cc.squirreljme.plugin.multivm.ident.TargetClassifier;
  13 import java.io.File;
  14 import java.time.Instant;
  15 import java.util.HashSet;
  16 import java.util.Set;
  17 import org.gradle.api.Task;
  18 import org.gradle.api.specs.Spec;
  19
  20 /**
  21  * This is a check to determine if a task is up-to-date or not for the library
  22  * compiler.
  23  *
  24  * @since 2020/11/28
  25  */
  26 public class VMLibraryTaskUpToDate
  27         implements Spec<Task>
  28 {
  29         /** The classifier used. */
  30         protected final TargetClassifier classifier;
  31
  32         /**
  33          * Initializes the task dependencies.
  34          *
  35          * @param __classifier The classifier used.
  36          * @throws NullPointerException On null arguments.
  37          * @since 2020/11/28
  38          */
  39         public VMLibraryTaskUpToDate(TargetClassifier __classifier)
  40                 throws NullPointerException
  41         {
  42                 if (__classifier == null)
  43                         throw new NullPointerException("NARG");
  44
  45                 this.classifier = __classifier;
  46         }
  47
  48         /**
  49          * {@inheritDoc}
  50          * @since 2020/11/28
  51          */
  52         @Override
  53         public boolean isSatisfiedBy(Task __task)
  54         {
  55                 // Get the times the output was last changed
  56                 Set<Instant> taskOuts = new HashSet<>();
  57                 for (File f : __task.getOutputs().getFiles().getFiles())
  58                         taskOuts.add(Instant.ofEpochMilli(f.lastModified()));
  59
  60                 // Determine if any part of the compiler was not considered up-to-date
  61                 for (Task dep : this.classifier.getVmType().processLibraryDependencies(
  62                         (VMExecutableTask)__task, this.classifier.getBangletVariant()))
  63                 {
  64                         for (File f : dep.getOutputs().getFiles().getFiles())
  65                         {
  66                                 Instant fileTime = Instant.ofEpochMilli(f.lastModified());
  67
  68                                 // One of the JARs the compiler uses is newer than the JAR we
  69                                 // made, so this is not up-to-date!
  70                                 for (Instant taskOut : taskOuts)
  71                                         if (fileTime.compareTo(taskOut) > 0)
  72                                                 return false;
  73                         }
  74                 }
  75
  76                 // Considered up to date
  77                 return true;
  78         }
  79 }