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Let
ijar warn only once per unsupported attribute
Work towards bazelbuild#21781 Closes bazelbuild#22072. PiperOrigin-RevId: 629359080 Change-Id: I2c813d3a9069ec125a914bfc57e6c9068c83d3bc
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89 changes: 89 additions & 0 deletions
89
third_party/ijar/test/GenDuplicatedUnsupportedAttribute.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| // Copyright 2024 The Bazel Authors. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package test; | ||
|
|
||
| import java.io.FileOutputStream; | ||
| import java.io.IOException; | ||
| import java.util.jar.JarOutputStream; | ||
| import java.util.zip.ZipEntry; | ||
| import org.objectweb.asm.Attribute; | ||
| import org.objectweb.asm.ByteVector; | ||
| import org.objectweb.asm.ClassWriter; | ||
| import org.objectweb.asm.MethodVisitor; | ||
| import org.objectweb.asm.Opcodes; | ||
|
|
||
| public class GenDuplicatedUnsupportedAttribute { | ||
| public static void main(String[] args) throws IOException { | ||
| try (JarOutputStream jos = new JarOutputStream(new FileOutputStream(args[0]))) { | ||
| jos.putNextEntry(new ZipEntry("unsupportedattributes/Test1.class")); | ||
| jos.write(dump("Test1")); | ||
| jos.putNextEntry(new ZipEntry("unsupportedattributes/Test2.class")); | ||
| jos.write(dump("Test2")); | ||
| } | ||
| } | ||
|
|
||
| public static byte[] dump(String name) { | ||
| ClassWriter cw = new ClassWriter(0); | ||
| MethodVisitor mv; | ||
|
|
||
| cw.visit( | ||
| 52, | ||
| Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER, | ||
| "unsupportedattributes/" + name, | ||
| null, | ||
| "java/lang/Object", | ||
| null); | ||
|
|
||
| // This is the important part for the test - repeat an unsupported attribute. | ||
| cw.visitAttribute( | ||
| new Attribute("some_unknown_type") { | ||
| @Override | ||
| protected ByteVector write( | ||
| ClassWriter classWriter, byte[] code, int codeLength, int maxStack, int maxLocals) { | ||
| return new ByteVector().putInt(1234); | ||
| } | ||
| }); | ||
|
|
||
| { | ||
| mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null); | ||
| mv.visitCode(); | ||
| mv.visitVarInsn(Opcodes.ALOAD, 0); | ||
| mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); | ||
| mv.visitInsn(Opcodes.RETURN); | ||
| mv.visitMaxs(1, 1); | ||
| mv.visitEnd(); | ||
| } | ||
| { | ||
| mv = | ||
| cw.visitMethod( | ||
| Opcodes.ACC_PUBLIC + Opcodes.ACC_STATIC, | ||
| "main", | ||
| "([Ljava/lang/String;)V", | ||
| null, | ||
| null); | ||
| mv.visitCode(); | ||
| mv.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "err", "Ljava/io/PrintStream;"); | ||
| mv.visitLdcInsn("Hello"); | ||
| mv.visitMethodInsn( | ||
| Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false); | ||
| mv.visitInsn(Opcodes.RETURN); | ||
| mv.visitMaxs(2, 1); | ||
| mv.visitEnd(); | ||
| } | ||
| cw.visitEnd(); | ||
|
|
||
| return cw.toByteArray(); | ||
| } | ||
| } |
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