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Java Symbol.erasure方法代码示例

本文整理汇总了Java中com.sun.tools.javac.code.Symbol.erasure方法的典型用法代码示例。如果您正苦于以下问题:Java Symbol.erasure方法的具体用法?Java Symbol.erasure怎么用?Java Symbol.erasure使用的例子?那么, 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com.sun.tools.javac.code.Symbol的用法示例。


在下文中一共展示了Symbol.erasure方法的2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: makeMetafactoryIndyCall

import com.sun.tools.javac.code.Symbol; //导入方法依赖的package包/类
/**
 * Generate an indy method call to the meta factory
 */
private JCExpression makeMetafactoryIndyCall(TranslationContext<?> context,
        int refKind, Symbol refSym, List<JCExpression> indy_args) {
    JCFunctionalExpression tree = context.tree;
    //determine the static bsm args
    MethodSymbol samSym = (MethodSymbol) types.findDescriptorSymbol(tree.type.tsym);
    List<Object> staticArgs = List.<Object>of(
            typeToMethodType(samSym.type),
            new Pool.MethodHandle(refKind, refSym, types),
            typeToMethodType(tree.getDescriptorType(types)));

    //computed indy arg types
    ListBuffer<Type> indy_args_types = new ListBuffer<>();
    for (JCExpression arg : indy_args) {
        indy_args_types.append(arg.type);
    }

    //finally, compute the type of the indy call
    MethodType indyType = new MethodType(indy_args_types.toList(),
            tree.type,
            List.<Type>nil(),
            syms.methodClass);

    Name metafactoryName = context.needsAltMetafactory() ?
            names.altMetafactory : names.metafactory;

    if (context.needsAltMetafactory()) {
        ListBuffer<Object> markers = new ListBuffer<>();
        for (Type t : tree.targets.tail) {
            if (t.tsym != syms.serializableType.tsym) {
                markers.append(t.tsym);
            }
        }
        int flags = context.isSerializable() ? FLAG_SERIALIZABLE : 0;
        boolean hasMarkers = markers.nonEmpty();
        boolean hasBridges = context.bridges.nonEmpty();
        if (hasMarkers) {
            flags |= FLAG_MARKERS;
        }
        if (hasBridges) {
            flags |= FLAG_BRIDGES;
        }
        staticArgs = staticArgs.append(flags);
        if (hasMarkers) {
            staticArgs = staticArgs.append(markers.length());
            staticArgs = staticArgs.appendList(markers.toList());
        }
        if (hasBridges) {
            staticArgs = staticArgs.append(context.bridges.length() - 1);
            for (Symbol s : context.bridges) {
                Type s_erasure = s.erasure(types);
                if (!types.isSameType(s_erasure, samSym.erasure(types))) {
                    staticArgs = staticArgs.append(s.erasure(types));
                }
            }
        }
        if (context.isSerializable()) {
            int prevPos = make.pos;
            try {
                make.at(kInfo.clazz);
                addDeserializationCase(refKind, refSym, tree.type, samSym,
                        tree, staticArgs, indyType);
            } finally {
                make.at(prevPos);
            }
        }
    }

    return makeIndyCall(tree, syms.lambdaMetafactory, metafactoryName, staticArgs, indyType, indy_args, samSym.name);
}
 
开发者ID:SunburstApps,项目名称:OpenJSharp,代码行数:73,代码来源:LambdaToMethod.java

示例2: makeMetafactoryIndyCall

import com.sun.tools.javac.code.Symbol; //导入方法依赖的package包/类
/**
 * Generate an indy method call to the meta factory
 */
private JCExpression makeMetafactoryIndyCall(TranslationContext<?> context,
        int refKind, Symbol refSym, List<JCExpression> indy_args) {
    JCFunctionalExpression tree = context.tree;
    //determine the static bsm args
    MethodSymbol samSym = (MethodSymbol) types.findDescriptorSymbol(tree.type.tsym);
    List<Object> staticArgs = List.of(
            typeToMethodType(samSym.type),
            new Pool.MethodHandle(refKind, refSym, types),
            typeToMethodType(tree.getDescriptorType(types)));

    //computed indy arg types
    ListBuffer<Type> indy_args_types = new ListBuffer<>();
    for (JCExpression arg : indy_args) {
        indy_args_types.append(arg.type);
    }

    //finally, compute the type of the indy call
    MethodType indyType = new MethodType(indy_args_types.toList(),
            tree.type,
            List.nil(),
            syms.methodClass);

    Name metafactoryName = context.needsAltMetafactory() ?
            names.altMetafactory : names.metafactory;

    if (context.needsAltMetafactory()) {
        ListBuffer<Object> markers = new ListBuffer<>();
        for (Type t : tree.targets.tail) {
            if (t.tsym != syms.serializableType.tsym) {
                markers.append(t.tsym);
            }
        }
        int flags = context.isSerializable() ? FLAG_SERIALIZABLE : 0;
        boolean hasMarkers = markers.nonEmpty();
        boolean hasBridges = context.bridges.nonEmpty();
        if (hasMarkers) {
            flags |= FLAG_MARKERS;
        }
        if (hasBridges) {
            flags |= FLAG_BRIDGES;
        }
        staticArgs = staticArgs.append(flags);
        if (hasMarkers) {
            staticArgs = staticArgs.append(markers.length());
            staticArgs = staticArgs.appendList(markers.toList());
        }
        if (hasBridges) {
            staticArgs = staticArgs.append(context.bridges.length() - 1);
            for (Symbol s : context.bridges) {
                Type s_erasure = s.erasure(types);
                if (!types.isSameType(s_erasure, samSym.erasure(types))) {
                    staticArgs = staticArgs.append(s.erasure(types));
                }
            }
        }
        if (context.isSerializable()) {
            int prevPos = make.pos;
            try {
                make.at(kInfo.clazz);
                addDeserializationCase(refKind, refSym, tree.type, samSym,
                        tree, staticArgs, indyType);
            } finally {
                make.at(prevPos);
            }
        }
    }

    return makeIndyCall(tree, syms.lambdaMetafactory, metafactoryName, staticArgs, indyType, indy_args, samSym.name);
}
 
开发者ID:AdoptOpenJDK,项目名称:openjdk-jdk10,代码行数:73,代码来源:LambdaToMethod.java


注:本文中的com.sun.tools.javac.code.Symbol.erasure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。