1 files changed, 78 insertions, 0 deletions
diff --git a/benchmarks/src/jmh/java/org/objectweb/asm/benchmarks/JiapiGenerator.java b/benchmarks/src/jmh/java/org/objectweb/asm/benchmarks/JiapiGenerator.java
new file mode 100644
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+++ b/benchmarks/src/jmh/java/org/objectweb/asm/benchmarks/JiapiGenerator.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 java.lang.reflect.Modifier;
+import net.sf.jiapi.reflect.InstructionFactory;
+import net.sf.jiapi.reflect.InstructionList;
+import net.sf.jiapi.reflect.JiapiClass;
+import net.sf.jiapi.reflect.JiapiMethod;
+import net.sf.jiapi.reflect.MethodExistsException;
+import net.sf.jiapi.reflect.Signature;
+
+/**
+ * A "Hello World!" class generator using the Jiapi library.
+ *
+ * @author Eric Bruneton
+ */
+public class JiapiGenerator extends Generator {
+
+  private static final Signature EMPTY_SIGNATURE = new Signature("()V");
+  private static final Signature MAIN_SIGNATURE = new Signature("([Ljava/lang/String;)V");
+  private static final Signature PRINTLN_SIGNATURE = new Signature("(Ljava/lang/String;)V");
+
+  @Override
+  public byte[] generateClass() {
+    try {
+      JiapiClass jiapiClass = JiapiClass.createClass("HelloWorld");
+
+      // No API to set SourceFile!
+
+      JiapiMethod method = jiapiClass.addMethod(Modifier.PUBLIC, "<init>", EMPTY_SIGNATURE);
+      InstructionList insnList = method.getInstructionList();
+      InstructionFactory insnFactory = insnList.getInstructionFactory();
+      insnList.add(insnFactory.aload(0));
+      insnList.add(insnFactory.invoke(0, "java/lang/Object", "<init>", EMPTY_SIGNATURE));
+      insnList.add(insnFactory.returnMethod(method));
+
+      method = jiapiClass.addMethod(Modifier.PUBLIC | Modifier.STATIC, "main", MAIN_SIGNATURE);
+      insnList = method.getInstructionList();
+      insnFactory = insnList.getInstructionFactory();
+      insnList.add(
+          insnFactory.getField(
+              Modifier.STATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"));
+      insnList.add(insnFactory.pushConstant("Hello world!"));
+      insnList.add(insnFactory.invoke(0, "java/io/PrintStream", "println", PRINTLN_SIGNATURE));
+      insnList.add(insnFactory.returnMethod(method));
+
+      return jiapiClass.getByteCode();
+    } catch (MethodExistsException e) {
+      throw new RuntimeException("Class generation failed", e);
+    }
+  }
+}