Java PropertyDescriptor.setWritable方法代码示例

本文整理汇总了Java中jdk.nashorn.internal.runtime.PropertyDescriptor.setWritable方法的典型用法代码示例。如果您正苦于以下问题：Java PropertyDescriptor.setWritable方法的具体用法？Java PropertyDescriptor.setWritable怎么用？Java PropertyDescriptor.setWritable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类jdk.nashorn.internal.runtime.PropertyDescriptor的用法示例。

在下文中一共展示了PropertyDescriptor.setWritable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: defineLength

import jdk.nashorn.internal.runtime.PropertyDescriptor; //导入方法依赖的package包/类
private boolean defineLength(final long oldLen, final PropertyDescriptor oldLenDesc, final PropertyDescriptor desc, final boolean reject) {
    // Step 3a
    if (!desc.has(VALUE)) {
        return super.defineOwnProperty("length", desc, reject);
    }

    // Step 3b
    final PropertyDescriptor newLenDesc = desc;

    // Step 3c and 3d - get new length and convert to long
    final long newLen = NativeArray.validLength(newLenDesc.getValue(), true);

    // Step 3e
    newLenDesc.setValue(newLen);

    // Step 3f
    // increasing array length - just need to set new length value (and attributes if any) and return
    if (newLen >= oldLen) {
        return super.defineOwnProperty("length", newLenDesc, reject);
    }

    // Step 3g
    if (!oldLenDesc.isWritable()) {
        if (reject) {
            throw typeError("property.not.writable", "length", ScriptRuntime.safeToString(this));
        }
        return false;
    }

    // Step 3h and 3i
    final boolean newWritable = !newLenDesc.has(WRITABLE) || newLenDesc.isWritable();
    if (!newWritable) {
        newLenDesc.setWritable(true);
    }

    // Step 3j and 3k
    final boolean succeeded = super.defineOwnProperty("length", newLenDesc, reject);
    if (!succeeded) {
        return false;
    }

    // Step 3l
    // make sure that length is set till the point we can delete the old elements
    long o = oldLen;
    while (newLen < o) {
        o--;
        final boolean deleteSucceeded = delete(o, false);
        if (!deleteSucceeded) {
            newLenDesc.setValue(o + 1);
            if (!newWritable) {
                newLenDesc.setWritable(false);
            }
            super.defineOwnProperty("length", newLenDesc, false);
            if (reject) {
                throw typeError("property.not.writable", "length", ScriptRuntime.safeToString(this));
            }
            return false;
        }
    }

    // Step 3m
    if (!newWritable) {
        // make 'length' property not writable
        final ScriptObject newDesc = Global.newEmptyInstance();
        newDesc.set(WRITABLE, false, 0);
        return super.defineOwnProperty("length", newDesc, false);
    }

    return true;
}

开发者ID:SunburstApps，项目名称:OpenJSharp，代码行数:71，代码来源:NativeArray.java

示例2: defineLength

import jdk.nashorn.internal.runtime.PropertyDescriptor; //导入方法依赖的package包/类
private boolean defineLength(final long oldLen, final PropertyDescriptor oldLenDesc, final PropertyDescriptor desc, final boolean reject) {
    // Step 3a
    if (!desc.has(VALUE)) {
        return super.defineOwnProperty("length", desc, reject);
    }

    // Step 3b
    final PropertyDescriptor newLenDesc = desc;

    // Step 3c and 3d - get new length and convert to long
    final long newLen = NativeArray.validLength(newLenDesc.getValue());

    // Step 3e - note that we need to convert to int or double as long is not considered a JS number type anymore
    newLenDesc.setValue(JSType.toNarrowestNumber(newLen));

    // Step 3f
    // increasing array length - just need to set new length value (and attributes if any) and return
    if (newLen >= oldLen) {
        return super.defineOwnProperty("length", newLenDesc, reject);
    }

    // Step 3g
    if (!oldLenDesc.isWritable()) {
        if (reject) {
            throw typeError("property.not.writable", "length", ScriptRuntime.safeToString(this));
        }
        return false;
    }

    // Step 3h and 3i
    final boolean newWritable = !newLenDesc.has(WRITABLE) || newLenDesc.isWritable();
    if (!newWritable) {
        newLenDesc.setWritable(true);
    }

    // Step 3j and 3k
    final boolean succeeded = super.defineOwnProperty("length", newLenDesc, reject);
    if (!succeeded) {
        return false;
    }

    // Step 3l
    // make sure that length is set till the point we can delete the old elements
    long o = oldLen;
    while (newLen < o) {
        o--;
        final boolean deleteSucceeded = delete(o, false);
        if (!deleteSucceeded) {
            newLenDesc.setValue(o + 1);
            if (!newWritable) {
                newLenDesc.setWritable(false);
            }
            super.defineOwnProperty("length", newLenDesc, false);
            if (reject) {
                throw typeError("property.not.writable", "length", ScriptRuntime.safeToString(this));
            }
            return false;
        }
    }

    // Step 3m
    if (!newWritable) {
        // make 'length' property not writable
        final ScriptObject newDesc = Global.newEmptyInstance();
        newDesc.set(WRITABLE, false, 0);
        return super.defineOwnProperty("length", newDesc, false);
    }

    return true;
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:71，代码来源:NativeArray.java

示例3: defineLength

import jdk.nashorn.internal.runtime.PropertyDescriptor; //导入方法依赖的package包/类
private boolean defineLength(final long oldLen, final PropertyDescriptor oldLenDesc, final PropertyDescriptor desc, final boolean reject) {
    // Step 3a
    if (!desc.has(VALUE)) {
        return super.defineOwnProperty("length", desc, reject);
    }

    // Step 3b
    final PropertyDescriptor newLenDesc = desc;

    // Step 3c and 3d - get new length and convert to long
    final long newLen = NativeArray.validLength(newLenDesc.getValue());

    // Step 3e
    newLenDesc.setValue(newLen);

    // Step 3f
    // increasing array length - just need to set new length value (and attributes if any) and return
    if (newLen >= oldLen) {
        return super.defineOwnProperty("length", newLenDesc, reject);
    }

    // Step 3g
    if (!oldLenDesc.isWritable()) {
        if (reject) {
            throw typeError("property.not.writable", "length", ScriptRuntime.safeToString(this));
        }
        return false;
    }

    // Step 3h and 3i
    final boolean newWritable = !newLenDesc.has(WRITABLE) || newLenDesc.isWritable();
    if (!newWritable) {
        newLenDesc.setWritable(true);
    }

    // Step 3j and 3k
    final boolean succeeded = super.defineOwnProperty("length", newLenDesc, reject);
    if (!succeeded) {
        return false;
    }

    // Step 3l
    // make sure that length is set till the point we can delete the old elements
    long o = oldLen;
    while (newLen < o) {
        o--;
        final boolean deleteSucceeded = delete(o, false);
        if (!deleteSucceeded) {
            newLenDesc.setValue(o + 1);
            if (!newWritable) {
                newLenDesc.setWritable(false);
            }
            super.defineOwnProperty("length", newLenDesc, false);
            if (reject) {
                throw typeError("property.not.writable", "length", ScriptRuntime.safeToString(this));
            }
            return false;
        }
    }

    // Step 3m
    if (!newWritable) {
        // make 'length' property not writable
        final ScriptObject newDesc = Global.newEmptyInstance();
        newDesc.set(WRITABLE, false, 0);
        return super.defineOwnProperty("length", newDesc, false);
    }

    return true;
}

开发者ID:malaporte，项目名称:kaziranga，代码行数:71，代码来源:NativeArray.java

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