Examples with MethodVisitor org.simpleflatmapper.ow2asm.MethodVisitor used on opensource projects

Example 6 with MethodVisitor

use of org.simpleflatmapper.ow2asm.MethodVisitor in project SimpleFlatMapper by arnaudroger.

the class BiInstantiatorBuilder method appendToString.

private static <S1, S2> void appendToString(List<InjectionPoint> injections, ClassWriter cw, Parameter[] parameters) {
    MethodVisitor mv;
    mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
    mv.visitCode();
    mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
    mv.visitInsn(DUP);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V", false);
    mv.visitVarInsn(ASTORE, 1);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getSimpleName", "()Ljava/lang/String;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitLdcInsn("{");
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    for (int i = 0; i < parameters.length; i++) {
        String paramName = (i > 0 ? ", " : "") + "parameter" + i + "=";
        String parameter = String.valueOf(parameters[i]);
        mv.visitLdcInsn(paramName);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        mv.visitLdcInsn(parameter);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        InjectionPoint injectionPoint = findFunctionCalls(parameters[i], injections);
        String getterName = ", parameter" + i + "=";
        String getterString = injectionPoint != null ? injectionPoint.functionType.toString() : "<null>";
        mv.visitLdcInsn(getterName);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        mv.visitLdcInsn(getterString);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    }
    mv.visitLdcInsn("}");
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(2, 1);
    mv.visitEnd();
}

Example 7 with MethodVisitor

use of org.simpleflatmapper.ow2asm.MethodVisitor in project SimpleFlatMapper by arnaudroger.

the class BiInstantiatorBuilder method appendInitBuilder.

private static <S1, S2> void appendInitBuilder(List<InjectionPoint> injections, ClassWriter cw, String s1, String s2, String classType, BuilderInstantiatorDefinition instantiatorDefinition) {
    MethodVisitor mv;
    mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(Ljava/util/Map;L" + AsmUtils.toAsmType(INSTANTIATOR_CLASS) + ";)V", "(Ljava/util/Map<Ljava.lang.String;L" + AsmUtils.toAsmType(BiFunction.class) + "<" + AsmUtils.toTargetTypeDeclaration(s1) + "*" + AsmUtils.toTargetTypeDeclaration(s2) + "*>;>;" + "L" + AsmUtils.toAsmType(INSTANTIATOR_CLASS) + "<Ljava/lang/Void;L" + AsmUtils.toAsmType(getTargetType(instantiatorDefinition.getBuilderInstantiator())) + ";>;)V", null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 2);
    mv.visitFieldInsn(PUTFIELD, classType, "builderInstantiator", "L" + AsmUtils.toAsmType(INSTANTIATOR_CLASS) + ";");
    appendInitField(injections, classType, mv);
    mv.visitInsn(RETURN);
    mv.visitMaxs(3, 2);
    mv.visitEnd();
}

Example 8 with MethodVisitor

use of org.simpleflatmapper.ow2asm.MethodVisitor in project SimpleFlatMapper by arnaudroger.

the class GetterBuilder method appendBridge.

private static void appendBridge(ClassWriter cw, String targetType, String propertyType, String classType) {
    MethodVisitor mv;
    mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "get", "(Ljava/lang/Object;)Ljava/lang/Object;", null, new String[] { "java/lang/Exception" });
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(CHECKCAST, targetType);
    mv.visitMethodInsn(INVOKEVIRTUAL, classType, "get", "(" + AsmUtils.toTargetTypeDeclaration(targetType) + ")" + AsmUtils.toTargetTypeDeclaration(propertyType), false);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(2, 2);
    mv.visitEnd();
}

Example 9 with MethodVisitor

use of org.simpleflatmapper.ow2asm.MethodVisitor in project SimpleFlatMapper by arnaudroger.

the class GetterBuilder method appendToString.

private static void appendToString(ClassWriter cw) {
    MethodVisitor mv;
    mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
    mv.visitCode();
    mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
    mv.visitInsn(DUP);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V", false);
    mv.visitVarInsn(ASTORE, 1);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getSimpleName", "()Ljava/lang/String;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitLdcInsn("{");
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitLdcInsn("}");
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(2, 1);
    mv.visitEnd();
}

Example 10 with MethodVisitor

use of org.simpleflatmapper.ow2asm.MethodVisitor in project SimpleFlatMapper by arnaudroger.

the class GetterBuilder method createPrimitiveGetter.

public static byte[] createPrimitiveGetter(String className, Method method) throws Exception {
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
    MethodVisitor mv;
    Class<?> target = method.getDeclaringClass();
    Class<?> primitive = method.getReturnType();
    Class<?> property = AsmUtils.wrappers.get(primitive);
    String targetType = toType(target);
    String primitiveType = AsmUtils.primitivesType.get(primitive);
    String propertyType = toType(property);
    String classType = toType(className);
    String methodSuffix = property.getSimpleName();
    if ("Integer".equals(methodSuffix)) {
        methodSuffix = "Int";
    }
    String getMethod = "get" + methodSuffix;
    cw.visit(V1_6, ACC_PUBLIC + ACC_FINAL + ACC_SUPER, classType, "Ljava/lang/Object;" + "L" + GETTER_TYPE + "<L" + targetType + ";" + AsmUtils.toTargetTypeDeclaration(propertyType) + ">;" + "L" + ORG_SFM_REFLECT_PRIMITIVE + methodSuffix + "Getter<L" + targetType + ";>;", "java/lang/Object", new String[] { GETTER_TYPE, ORG_SFM_REFLECT_PRIMITIVE + "/" + methodSuffix + "Getter" });
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, getMethod, "(" + AsmUtils.toTargetTypeDeclaration(targetType) + ")" + primitiveType, null, new String[] { "java/lang/Exception" });
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 1);
        AsmUtils.invoke(mv, target, method.getName(), "()" + primitiveType);
        mv.visitInsn(AsmUtils.returnOps.get(primitive));
        mv.visitMaxs(1, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "get", "(" + AsmUtils.toTargetTypeDeclaration(targetType) + ")" + AsmUtils.toTargetTypeDeclaration(propertyType), null, new String[] { "java/lang/Exception" });
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 1);
        AsmUtils.invoke(mv, target, method.getName(), "()" + primitiveType);
        mv.visitMethodInsn(INVOKESTATIC, propertyType, "valueOf", "(" + primitiveType + ")L" + propertyType + ";", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(1, 2);
        mv.visitEnd();
    }
    appendPrimitiveBridges(cw, primitive, targetType, primitiveType, propertyType, classType, getMethod);
    appendToString(cw);
    cw.visitEnd();
    return AsmUtils.writeClassToFile(className, cw.toByteArray());
}