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Added org.codehaus.groovy.runtime.ExceptionUtils with a sneakyThrow m…
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import org.codehaus.groovy.classgen.AnnotationVisitor | ||
import org.objectweb.asm.ClassWriter | ||
import org.objectweb.asm.FieldVisitor | ||
import org.objectweb.asm.Label | ||
import org.objectweb.asm.MethodVisitor | ||
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import static org.objectweb.asm.Opcodes.* | ||
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/* | ||
* Copyright 2003-2012 the original author or authors. | ||
* | ||
* 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. | ||
*/ | ||
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buildscript { | ||
repositories { | ||
mavenCentral() | ||
} | ||
dependencies { | ||
classpath "org.ow2.asm:asm:4.0" | ||
} | ||
} | ||
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/** | ||
* This tasks generates an utility class which allows sneaky throwing. | ||
*/ | ||
task exceptionUtils { | ||
ext.classFiles = [ | ||
"${compileCompilerJava.destinationDir}/org/codehaus/groovy/runtime/ExceptionUtils.class", | ||
"${compileJava.destinationDir}/org/codehaus/groovy/runtime/ExceptionUtils.class"] | ||
outputs.files classFiles | ||
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doLast { | ||
ClassWriter cw = new ClassWriter(0); | ||
FieldVisitor fv; | ||
MethodVisitor mv; | ||
AnnotationVisitor av0; | ||
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cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, "org/codehaus/groovy/runtime/ExceptionUtils", null, "java/lang/Object", null); | ||
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cw.visitSource("ExceptionUtils.java", null); | ||
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mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); | ||
mv.visitCode(); | ||
Label l0 = new Label(); | ||
mv.visitLabel(l0); | ||
mv.visitLineNumber(18, l0); | ||
mv.visitVarInsn(ALOAD, 0); | ||
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); | ||
mv.visitInsn(RETURN); | ||
Label l1 = new Label(); | ||
mv.visitLabel(l1); | ||
mv.visitLocalVariable("this", "Lorg/codehaus/groovy/runtime/ExceptionUtils;", null, l0, l1, 0); | ||
mv.visitMaxs(1, 1); | ||
mv.visitEnd(); | ||
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mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "sneakyThrow", "(Ljava/lang/Throwable;)V", null, null); | ||
mv.visitCode(); | ||
Label l2 = new Label(); | ||
mv.visitLabel(l2); | ||
mv.visitLineNumber(20, l2); | ||
mv.visitVarInsn(ALOAD, 0); | ||
mv.visitInsn(ATHROW); | ||
Label l3 = new Label(); | ||
mv.visitLabel(l3); | ||
mv.visitLocalVariable("e", "Ljava/lang/Throwable;", null, l2, l3, 0); | ||
mv.visitMaxs(1, 1); | ||
mv.visitEnd(); | ||
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cw.visitEnd(); | ||
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logger.lifecycle("Generating ExceptionUtils") | ||
classFiles.each { classFile -> | ||
def output = file(classFile) | ||
output.parentFile.mkdirs() | ||
output.withOutputStream { | ||
it << cw.toByteArray() | ||
} | ||
} | ||
} | ||
} |