Examples with MethodInfo javassist.bytecode.MethodInfo used on opensource projects

Example 21 with MethodInfo

use of javassist.bytecode.MethodInfo in project leopard by tanhaichao.

the class CtClassUtil method getParameterNames.

/**
 * 获取方法的参数名称.
 *
 * @param ctMethod
 * @return
 * @throws NotFoundException
 */
public static String[] getParameterNames(CtMethod ctMethod) throws NotFoundException {
    MethodInfo methodInfo = ctMethod.getMethodInfo();
    CodeAttribute codeAttribute = methodInfo.getCodeAttribute();
    // logger.info("methodInfo.getConstPool().getSize():");
    LocalVariableAttribute attribute = (LocalVariableAttribute) codeAttribute.getAttribute(LocalVariableAttribute.tag);
    // String[] names = new String[attribute.tableLength() - 1];
    String[] paramNames = new String[ctMethod.getParameterTypes().length];
    int pos = 0;
    if (true) {
        int size = attribute.tableLength();
        if (size > 0) {
            String[] names = new String[size - 1];
            for (int i = 0; i < names.length; i++) {
                names[i] = attribute.variableName(i);
                if ("this".equals(names[i])) {
                    pos = i + 1;
                    break;
                }
            }
        // logger.info(methodInfo.getName() + " pos:" + pos + " allNames:" + StringUtils.join(names, ", "));
        }
    }
    // logger.info(methodInfo.getName() + " pos:" + pos);
    for (int i = 0; i < paramNames.length; i++) {
        // paramNames[i] = attribute.variableName(i + 1);
        try {
            paramNames[i] = attribute.variableName(i + pos);
        // logger.info("paramNames[" + i + "]:" + paramNames[i]);
        } catch (RuntimeException e) {
            throw e;
        }
    }
    // System.err.println("paramNames:" + StringUtils.join(paramNames));
    return paramNames;
}

Example 22 with MethodInfo

use of javassist.bytecode.MethodInfo in project reflections by ronmamo.

the class MethodParameterNamesScanner method scan.

@Override
public void scan(Object cls) {
    final MetadataAdapter md = getMetadataAdapter();
    for (Object method : md.getMethods(cls)) {
        String key = md.getMethodFullKey(cls, method);
        if (acceptResult(key)) {
            LocalVariableAttribute table = (LocalVariableAttribute) ((MethodInfo) method).getCodeAttribute().getAttribute(LocalVariableAttribute.tag);
            int length = table.tableLength();
            //skip this
            int i = Modifier.isStatic(((MethodInfo) method).getAccessFlags()) ? 0 : 1;
            if (i < length) {
                List<String> names = new ArrayList<String>(length - i);
                while (i < length) names.add(((MethodInfo) method).getConstPool().getUtf8Info(table.nameIndex(i++)));
                getStore().put(key, Joiner.on(", ").join(names));
            }
        }
    }
}

Example 23 with MethodInfo

use of javassist.bytecode.MethodInfo in project pinpoint by naver.

the class JavassistClass method hasEnclosingMethod.

@Override
public boolean hasEnclosingMethod(String methodName, String... parameterTypes) {
    CtBehavior behavior;
    try {
        behavior = ctClass.getEnclosingBehavior();
    } catch (NotFoundException ignored) {
        return false;
    }
    if (behavior == null) {
        return false;
    }
    final MethodInfo methodInfo = behavior.getMethodInfo2();
    if (!methodInfo.getName().equals(methodName)) {
        return false;
    }
    final String jvmSignature = JavaAssistUtils.javaTypeToJvmSignature(parameterTypes);
    if (methodInfo.getDescriptor().startsWith(jvmSignature)) {
        return true;
    }
    return false;
}

Example 24 with MethodInfo

use of javassist.bytecode.MethodInfo in project pinpoint by naver.

the class JavassistEngineTest method getTransformByteCode.

public byte[] getTransformByteCode() {
    try {
        final ClassPool pool = new ClassPool(true);
        final CtClass ctClass = pool.get(mock);
        final ConstPool constPool = ctClass.getClassFile2().getConstPool();
        MethodInfo info = new MethodInfo(constPool, "transformMethod", "()V");
        final CtMethod newMethod = CtMethod.make(info, ctClass);
        ctClass.addMethod(newMethod);
        return ctClass.toBytecode();
    } catch (Exception ex) {
        throw new RuntimeException(ex.getMessage(), ex);
    }
}

Example 25 with MethodInfo

use of javassist.bytecode.MethodInfo in project leopard by tanhaichao.

the class CtClassUtil method getParameterNames.

/**
 * 获取方法的参数名称.
 *
 * @param ctMethod
 * @return
 * @throws NotFoundException
 */
public static String[] getParameterNames(CtMethod ctMethod) throws NotFoundException {
    MethodInfo methodInfo = ctMethod.getMethodInfo();
    CodeAttribute codeAttribute = methodInfo.getCodeAttribute();
    // logger.info("methodInfo.getConstPool().getSize():");
    LocalVariableAttribute attribute = (LocalVariableAttribute) codeAttribute.getAttribute(LocalVariableAttribute.tag);
    // String[] names = new String[attribute.tableLength() - 1];
    String[] paramNames = new String[ctMethod.getParameterTypes().length];
    int pos = 0;
    if (true) {
        int size = attribute.tableLength();
        if (size > 0) {
            String[] names = new String[size - 1];
            for (int i = 0; i < names.length; i++) {
                names[i] = attribute.variableName(i);
                if ("this".equals(names[i])) {
                    pos = i + 1;
                    break;
                }
            }
        // logger.info(methodInfo.getName() + " pos:" + pos + " allNames:" + StringUtils.join(names, ", "));
        }
    }
    // logger.info(methodInfo.getName() + " pos:" + pos);
    for (int i = 0; i < paramNames.length; i++) {
        // paramNames[i] = attribute.variableName(i + 1);
        try {
            paramNames[i] = attribute.variableName(i + pos);
        // logger.info("paramNames[" + i + "]:" + paramNames[i]);
        } catch (RuntimeException e) {
            throw e;
        }
    }
    // System.err.println("paramNames:" + StringUtils.join(paramNames));
    return paramNames;
}