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Java Bytecode.addNew方法代码示例

本文整理汇总了Java中javassist.bytecode.Bytecode.addNew方法的典型用法代码示例。如果您正苦于以下问题:Java Bytecode.addNew方法的具体用法?Java Bytecode.addNew怎么用?Java Bytecode.addNew使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在javassist.bytecode.Bytecode的用法示例。


在下文中一共展示了Bytecode.addNew方法的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: addGetter

import javassist.bytecode.Bytecode; //导入方法依赖的package包/类
private void addGetter(ClassFile classfile, final Method[] getters) throws CannotCompileException {
	ConstPool cp = classfile.getConstPool();
	int target_type_index = cp.addClassInfo( this.targetBean.getName() );
	String desc = GET_SETTER_DESC;
	MethodInfo mi = new MethodInfo( cp, GENERATED_GETTER_NAME, desc );

	Bytecode code = new Bytecode( cp, 6, 4 );
	/* | this | bean | args | raw bean | */
	if ( getters.length >= 0 ) {
		// aload_1 // load bean
		code.addAload( 1 );
		// checkcast // cast bean
		code.addCheckcast( this.targetBean.getName() );
		// astore_3 // store bean
		code.addAstore( 3 );
		for ( int i = 0; i < getters.length; ++i ) {
			if ( getters[i] != null ) {
				Method getter = getters[i];
				// aload_2 // args
				code.addAload( 2 );
				// iconst_i // continue to aastore
				code.addIconst( i ); // growing stack is 1
				Class returnType = getter.getReturnType();
				int typeIndex = -1;
				if ( returnType.isPrimitive() ) {
					typeIndex = FactoryHelper.typeIndex( returnType );
					// new
					code.addNew( FactoryHelper.wrapperTypes[typeIndex] );
					// dup
					code.addOpcode( Opcode.DUP );
				}

				// aload_3 // load the raw bean
				code.addAload( 3 );
				String getter_desc = RuntimeSupport.makeDescriptor( getter );
				String getterName = getter.getName();
				if ( this.targetBean.isInterface() ) {
					// invokeinterface
					code.addInvokeinterface( target_type_index, getterName, getter_desc, 1 );
				}
				else {
					// invokevirtual
					code.addInvokevirtual( target_type_index, getterName, getter_desc );
				}

				if ( typeIndex >= 0 ) {       // is a primitive type
					// invokespecial
					code.addInvokespecial(
							FactoryHelper.wrapperTypes[typeIndex],
					        MethodInfo.nameInit,
					        FactoryHelper.wrapperDesc[typeIndex]
					);
				}

				// aastore // args
				code.add( Opcode.AASTORE );
				code.growStack( -3 );
			}
		}
	}
	// return
	code.addOpcode( Opcode.RETURN );

	mi.setCodeAttribute( code.toCodeAttribute() );
	mi.setAccessFlags( AccessFlag.PUBLIC );
	classfile.addMethod( mi );
}
 
开发者ID:cacheonix,项目名称:cacheonix-core,代码行数:68,代码来源:BulkAccessorFactory.java

示例2: delegateNewArray

import javassist.bytecode.Bytecode; //导入方法依赖的package包/类
/**
 * Replaces creation of the array with the creation of the <em>KoratArray</em>
 * field. Just invokes its constructor with the <code>int</code> parameter
 * that represents the length of the array.
 * 
 * @param arrayType - 
 *            type of array in terms of JVM
 * @param cit -
 *            iterator through method's body code
 * @param idx -
 *            current position in the <code>cit</code>
 * @throws BadBytecode
 */
private void delegateNewArray(int arrayType, CodeIterator cit, int idx) {

    // check how this new array is going to be consumed
    if (operandStack.peek().consumedBy != ConsumedByKind.PUTFIELD)
        return;
    
    String koratClassName = koratArrayClassNames[arrayType];
    int locals = cit.get().getMaxLocals();
    int localVar1 = locals + 1;

    try {

        Bytecode codes = new Bytecode(constPool);
        codes.addIstore(localVar1);
        codes.addNew(koratClassName);
        codes.addOpcode(Opcode.DUP);
        codes.addIload(localVar1);
        String descr = Descriptor.ofMethod(CtClass.voidType,
                new CtClass[] { CtClass.intType });
        codes.addInvokespecial(koratClassName, "<init>", descr);

        int diff = codes.getSize() - 2;
        // -2 because original instruction
        // (NEWARRAY) is 2 bytes long.

        cit.insertGap(idx, diff);
        cit.write(codes.get(), idx);
        cit.get().setMaxLocals(localVar1 + 1);

    } catch (BadBytecode e) {
        throw new RuntimeException(e);
    }

}
 
开发者ID:korat-jenkins,项目名称:korat,代码行数:48,代码来源:ArrayBytecodesVisitor.java

示例3: addGetter

import javassist.bytecode.Bytecode; //导入方法依赖的package包/类
private void addGetter(ClassFile classfile, final Method[] getters) throws CannotCompileException {
	final ConstPool constPool = classfile.getConstPool();
	final int targetBeanConstPoolIndex = constPool.addClassInfo( this.targetBean.getName() );
	final String desc = GET_SETTER_DESC;
	final MethodInfo getterMethodInfo = new MethodInfo( constPool, GENERATED_GETTER_NAME, desc );

	final Bytecode code = new Bytecode( constPool, 6, 4 );
	/* | this | bean | args | raw bean | */
	if ( getters.length >= 0 ) {
		// aload_1 // load bean
		code.addAload( 1 );
		// checkcast // cast bean
		code.addCheckcast( this.targetBean.getName() );
		// astore_3 // store bean
		code.addAstore( 3 );
		for ( int i = 0; i < getters.length; ++i ) {
			if ( getters[i] != null ) {
				final Method getter = getters[i];
				// aload_2 // args
				code.addAload( 2 );
				// iconst_i // continue to aastore
				// growing stack is 1
				code.addIconst( i );
				final Class returnType = getter.getReturnType();
				int typeIndex = -1;
				if ( returnType.isPrimitive() ) {
					typeIndex = FactoryHelper.typeIndex( returnType );
					// new
					code.addNew( FactoryHelper.wrapperTypes[typeIndex] );
					// dup
					code.addOpcode( Opcode.DUP );
				}

				// aload_3 // load the raw bean
				code.addAload( 3 );
				final String getterSignature = RuntimeSupport.makeDescriptor( getter );
				final String getterName = getter.getName();
				if ( this.targetBean.isInterface() ) {
					// invokeinterface
					code.addInvokeinterface( targetBeanConstPoolIndex, getterName, getterSignature, 1 );
				}
				else {
					// invokevirtual
					code.addInvokevirtual( targetBeanConstPoolIndex, getterName, getterSignature );
				}

				if ( typeIndex >= 0 ) {
					// is a primitive type
					// invokespecial
					code.addInvokespecial(
							FactoryHelper.wrapperTypes[typeIndex],
							MethodInfo.nameInit,
							FactoryHelper.wrapperDesc[typeIndex]
					);
				}

				// aastore // args
				code.add( Opcode.AASTORE );
				code.growStack( -3 );
			}
		}
	}
	// return
	code.addOpcode( Opcode.RETURN );

	getterMethodInfo.setCodeAttribute( code.toCodeAttribute() );
	getterMethodInfo.setAccessFlags( AccessFlag.PUBLIC );
	classfile.addMethod( getterMethodInfo );
}
 
开发者ID:lamsfoundation,项目名称:lams,代码行数:70,代码来源:BulkAccessorFactory.java


注:本文中的javassist.bytecode.Bytecode.addNew方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。