1 files changed, 87 insertions, 0 deletions
diff --git a/benchmarks/src/jmh/java/org/objectweb/asm/benchmarks/AsmGenerator.java b/benchmarks/src/jmh/java/org/objectweb/asm/benchmarks/AsmGenerator.java
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+++ b/benchmarks/src/jmh/java/org/objectweb/asm/benchmarks/AsmGenerator.java
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+// ASM: a very small and fast Java bytecode manipulation framework
+// Copyright (c) 2000-2011 INRIA, France Telecom
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 3. Neither the name of the copyright holders nor the names of its
+//    contributors may be used to endorse or promote products derived from
+//    this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+// THE POSSIBILITY OF SUCH DAMAGE.
+package org.objectweb.asm.benchmarks;
+
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+
+/**
+ * A "Hello World!" class generator using the ASM library.
+ *
+ * @author Eric Bruneton
+ */
+public class AsmGenerator extends Generator {
+
+  @Override
+  public String getVersion() {
+    for (int i = 9; i >= 5; --i) {
+      try {
+        String version = "ASM" + i;
+        if (Opcodes.class.getField(version) != null) {
+          return version;
+        }
+      } catch (NoSuchFieldException e) {
+        continue;
+      }
+    }
+    return "";
+  }
+
+  @Override
+  public byte[] generateClass() {
+    ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS);
+
+    classWriter.visit(
+        Opcodes.V1_1, Opcodes.ACC_PUBLIC, "HelloWorld", null, "java/lang/Object", null);
+    classWriter.visitSource("HelloWorld.java", null);
+
+    MethodVisitor methodVisitor =
+        classWriter.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
+    methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
+    methodVisitor.visitMethodInsn(
+        Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
+    methodVisitor.visitInsn(Opcodes.RETURN);
+    methodVisitor.visitMaxs(0, 0);
+    methodVisitor.visitEnd();
+
+    methodVisitor =
+        classWriter.visitMethod(
+            Opcodes.ACC_PUBLIC + Opcodes.ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);
+    methodVisitor.visitFieldInsn(
+        Opcodes.GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
+    methodVisitor.visitLdcInsn("Hello world!");
+    methodVisitor.visitMethodInsn(
+        Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
+    methodVisitor.visitInsn(Opcodes.RETURN);
+    methodVisitor.visitMaxs(0, 0);
+    methodVisitor.visitEnd();
+
+    return classWriter.toByteArray();
+  }
+}