gnu/packages/patches/groovy-add-exceptionutilsgenerator.patch

   1 From 3dbdc68093e90f0ef9b77b70490d8e0b1dcfbf8f Mon Sep 17 00:00:00 2001
   2 From: Julien Lepiller <julien@lepiller.eu>
   3 Date: Sun, 17 Sep 2017 21:08:45 +0200
   4 Subject: [PATCH] Add ExceptionUtilsGenerator.java.
   5
   6 A gradle task (in gradle/utils.gradle) is normally used to generate an
   7 ExceptionUtils class. Since gradle depends on groovy, we cannot use it, so
   8 we copy the code from the gradle task to a new file. Running this file then
   9 generates the required class.
  10 ---
  11  .../codehaus/groovy/ExceptionUtilsGenerator.java   | 75 ++++++++++++++++++++++
  12  1 file changed, 75 insertions(+)
  13  create mode 100644 config/ant/src/org/codehaus/groovy/ExceptionUtilsGenerator.java
  14
  15 diff --git a/config/ant/src/org/codehaus/groovy/ExceptionUtilsGenerator.java b/config/ant/src/org/codehaus/groovy/ExceptionUtilsGenerator.java
  16 new file mode 100644
  17 index 0000000..41f006d
  18 --- /dev/null
  19 +++ b/config/ant/src/org/codehaus/groovy/ExceptionUtilsGenerator.java
  20 @@ -0,0 +1,75 @@
  21 +package org.codehaus.groovy;
  22 +
  23 +import org.objectweb.asm.*;
  24 +
  25 +import java.io.BufferedOutputStream;
  26 +import java.io.File;
  27 +import java.io.FileOutputStream;
  28 +import java.io.IOException;
  29 +import java.util.logging.Logger;
  30 +
  31 +public class ExceptionUtilsGenerator implements Opcodes {
  32 +    private final static Logger LOGGER = Logger.getLogger(ExceptionUtilsGenerator.class.getName());
  33 +
  34 +    public static void main(String... args) {
  35 +        if (args==null || args.length==0) {
  36 +            throw new IllegalArgumentException("You must specify at least one file");
  37 +        }
  38 +
  39 +        ClassWriter cw = new ClassWriter(0);
  40 +        MethodVisitor mv;
  41 +
  42 +        cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, "org/codehaus/groovy/runtime/ExceptionUtils", null, "java/lang/Object", null);
  43 +
  44 +        cw.visitSource("ExceptionUtils.java", null);
  45 +
  46 +        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
  47 +        mv.visitCode();
  48 +        Label l0 = new Label();
  49 +        mv.visitLabel(l0);
  50 +        mv.visitLineNumber(18, l0);
  51 +        mv.visitVarInsn(ALOAD, 0);
  52 +        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
  53 +        mv.visitInsn(RETURN);
  54 +        Label l1 = new Label();
  55 +        mv.visitLabel(l1);
  56 +        mv.visitLocalVariable("this", "Lorg/codehaus/groovy/runtime/ExceptionUtils;", null, l0, l1, 0);
  57 +        mv.visitMaxs(1, 1);
  58 +        mv.visitEnd();
  59 +
  60 +        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "sneakyThrow", "(Ljava/lang/Throwable;)V", null, null);
  61 +        mv.visitCode();
  62 +        Label l2 = new Label();
  63 +        mv.visitLabel(l2);
  64 +        mv.visitLineNumber(20, l2);
  65 +        mv.visitVarInsn(ALOAD, 0);
  66 +        mv.visitInsn(ATHROW);
  67 +        Label l3 = new Label();
  68 +        mv.visitLabel(l3);
  69 +        mv.visitLocalVariable("e", "Ljava/lang/Throwable;", null, l2, l3, 0);
  70 +        mv.visitMaxs(1, 1);
  71 +        mv.visitEnd();
  72 +
  73 +        cw.visitEnd();
  74 +
  75 +        LOGGER.info("Generating ExceptionUtils");
  76 +        byte[] bytes = cw.toByteArray();
  77 +        for (String classFilePath : args) {
  78 +            File classFile = new File(classFilePath);
  79 +            if (classFile.getParentFile().exists() || classFile.getParentFile().mkdirs()) {
  80 +                try {
  81 +                    if (classFile.exists()) {
  82 +                        classFile.delete();
  83 +                    }
  84 +                    BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(classFile));
  85 +                    bos.write(bytes);
  86 +                    bos.close();
  87 +                } catch (IOException e) {
  88 +                    LOGGER.warning("Unable to write file "+classFile);
  89 +                }
  90 +            } else {
  91 +                LOGGER.warning("Unable to create directory "+classFile.getParentFile());
  92 +            }
  93 +        }
  94 +       }
  95 +}
  96 --
  97 2.14.1
  98