| 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 |
| |
| import static org.objectweb.asm.Opcodes.* |
| |
| /* |
| * Copyright 2003-2013 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. |
| */ |
| |
| buildscript { |
| repositories { |
| mavenCentral() |
| } |
| dependencies { |
| classpath "org.ow2.asm:asm:$asmVersion" |
| } |
| } |
| |
| /** |
| * This tasks generates an utility class which allows sneaky throwing. |
| */ |
| task exceptionUtils { |
| ext.classFiles = [ |
| "${buildDir}/generated-classes/org/codehaus/groovy/runtime/ExceptionUtils.class", |
| "${compileJava.destinationDir}/org/codehaus/groovy/runtime/ExceptionUtils.class"] |
| outputs.files classFiles |
| |
| doLast { |
| ClassWriter cw = new ClassWriter(0); |
| FieldVisitor fv; |
| MethodVisitor mv; |
| AnnotationVisitor av0; |
| |
| cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, 'org/codehaus/groovy/runtime/ExceptionUtils', null, 'java/lang/Object', null); |
| |
| cw.visitSource('ExceptionUtils.java', null); |
| |
| 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', false); |
| 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(); |
| |
| 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(); |
| |
| cw.visitEnd(); |
| |
| logger.lifecycle('Generating ExceptionUtils') |
| classFiles.each { classFile -> |
| def output = file(classFile) |
| output.parentFile.mkdirs() |
| output.withOutputStream { |
| it << cw.toByteArray() |
| } |
| } |
| } |
| } |