tests/org.simantics.scl.compiler.tests/src/org/simantics/scl/compiler/tests/FindAllowedChars.java

   1 package org.simantics.scl.compiler.tests;\r
   2 \r
   3 import java.lang.reflect.Method;\r
   4 \r
   5 import org.objectweb.asm.ClassWriter;\r
   6 import org.objectweb.asm.MethodVisitor;\r
   7 import org.objectweb.asm.Opcodes;\r
   8 \r
   9 public class FindAllowedChars {\r
  10     public static class MyClassLoader extends ClassLoader {\r
  11         final String className;\r
  12         final byte[] classBytes;\r
  13         \r
  14         public MyClassLoader(ClassLoader parent, String className, byte[] classBytes) {\r
  15             super(parent);\r
  16             this.className = className;\r
  17             this.classBytes = classBytes;\r
  18         }\r
  19         \r
  20         public MyClassLoader(String className, byte[] classBytes) {\r
  21             this.className = className;\r
  22             this.classBytes = classBytes;\r
  23         }\r
  24 \r
  25         @Override\r
  26         protected Class<?> findClass(String name) throws ClassNotFoundException {\r
  27             if(name.equals(name))\r
  28                 return defineClass(name, classBytes, 0, classBytes.length);\r
  29             else\r
  30                 return super.findClass(name);\r
  31         }\r
  32     }\r
  33     \r
  34     public static void test(String className, String methodName) throws Exception {\r
  35         ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS);\r
  36         classWriter.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, className, null, "java/lang/Object", null);\r
  37         \r
  38         MethodVisitor methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, methodName, "()V", null, null);\r
  39         /*methodVisitor.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");\r
  40         methodVisitor.visitLdcInsn("Hello world!");\r
  41         methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);*/\r
  42         methodVisitor.visitInsn(Opcodes.RETURN);\r
  43         methodVisitor.visitMaxs(0, 0);\r
  44         methodVisitor.visitEnd();\r
  45         classWriter.visitEnd();\r
  46  \r
  47         ClassLoader loader = new MyClassLoader(className, classWriter.toByteArray());\r
  48         Class<?> clazz = loader.loadClass(className);\r
  49         Method method = clazz.getMethod(methodName);\r
  50         method.invoke(null);\r
  51     }\r
  52     \r
  53     public static void main(String[] args) throws Exception {\r
  54         for(int a=Character.MIN_VALUE;a<Character.MAX_VALUE;++a) {\r
  55             //for(char b=0;b<256;++b) {\r
  56                 String name = new String(new char[] {(char)a});\r
  57                 try {\r
  58                     test(name, "test");\r
  59                 } catch(Throwable e) {\r
  60                     System.out.println(name + " (" + a + ")");\r
  61                 }\r
  62             //}   \r
  63         }\r
  64         System.out.println((int)Character.MAX_VALUE);\r
  65     }\r
  66 }\r