Java PropertyDescriptor.has方法代码示例

本文整理汇总了Java中jdk.nashorn.internal.runtime.PropertyDescriptor.has方法的典型用法代码示例。如果您正苦于以下问题：Java PropertyDescriptor.has方法的具体用法？Java PropertyDescriptor.has怎么用？Java PropertyDescriptor.has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.has方法的9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: hasAndEquals

import jdk.nashorn.internal.runtime.PropertyDescriptor; //导入方法依赖的package包/类
@Override
public boolean hasAndEquals(final PropertyDescriptor other) {
    if (has(CONFIGURABLE) && other.has(CONFIGURABLE)) {
        if (isConfigurable() != other.isConfigurable()) {
            return false;
        }
    }

    if (has(ENUMERABLE) && other.has(ENUMERABLE)) {
        if (isEnumerable() != other.isEnumerable()) {
            return false;
        }
    }

    return true;
}

开发者ID:SunburstApps，项目名称:OpenJSharp，代码行数:17，代码来源:GenericPropertyDescriptor.java

示例2: defineOwnProperty

import jdk.nashorn.internal.runtime.PropertyDescriptor; //导入方法依赖的package包/类
/**
 * ECMA 15.4.5.1 [[DefineOwnProperty]] ( P, Desc, Throw ) as specialized in
 * ECMA 10.6 for Arguments object.
 */
@Override
public boolean defineOwnProperty(final String key, final Object propertyDesc, final boolean reject) {
    final int index = ArrayIndex.getArrayIndex(key);
    if (index >= 0) {
        final boolean isMapped = isMapped(index);
        final Object oldValue = isMapped ? getArray().getObject(index) : null;

        if (!super.defineOwnProperty(key, propertyDesc, false)) {
            if (reject) {
                throw typeError("cant.redefine.property",  key, ScriptRuntime.safeToString(this));
            }
            return false;
        }

        if (isMapped) {
            // When mapped argument is redefined, if new descriptor is accessor property
            // or data-non-writable property, we have to "unmap" (unlink).
            final PropertyDescriptor desc = toPropertyDescriptor(Global.instance(), propertyDesc);
            if (desc.type() == PropertyDescriptor.ACCESSOR) {
                setDeleted(index, oldValue);
            } else if (desc.has(PropertyDescriptor.WRITABLE) && !desc.isWritable()) {
                // delete and set value from new descriptor if it has one, otherwise use old value
                setDeleted(index, desc.has(PropertyDescriptor.VALUE) ? desc.getValue() : oldValue);
            } else if (desc.has(PropertyDescriptor.VALUE)) {
                setArray(getArray().set(index, desc.getValue(), false));
            }
        }

        return true;
    }

    return super.defineOwnProperty(key, propertyDesc, reject);
}

开发者ID:SunburstApps，项目名称:OpenJSharp，代码行数:38，代码来源:NativeArguments.java

示例3: defineOwnProperty

import jdk.nashorn.internal.runtime.PropertyDescriptor; //导入方法依赖的package包/类
/**
 * ECMA 15.4.5.1 [[DefineOwnProperty]] ( P, Desc, Throw ) as specialized in
 * ECMA 10.6 for Arguments object.
 */
@Override
public boolean defineOwnProperty(final Object key, final Object propertyDesc, final boolean reject) {
    final int index = ArrayIndex.getArrayIndex(key);
    if (index >= 0) {
        final boolean isMapped = isMapped(index);
        final Object oldValue = isMapped ? getArray().getObject(index) : null;

        if (!super.defineOwnProperty(key, propertyDesc, false)) {
            if (reject) {
                throw typeError("cant.redefine.property",  key.toString(), ScriptRuntime.safeToString(this));
            }
            return false;
        }

        if (isMapped) {
            // When mapped argument is redefined, if new descriptor is accessor property
            // or data-non-writable property, we have to "unmap" (unlink).
            final PropertyDescriptor desc = toPropertyDescriptor(Global.instance(), propertyDesc);
            if (desc.type() == PropertyDescriptor.ACCESSOR) {
                setDeleted(index, oldValue);
            } else if (desc.has(PropertyDescriptor.WRITABLE) && !desc.isWritable()) {
                // delete and set value from new descriptor if it has one, otherwise use old value
                setDeleted(index, desc.has(PropertyDescriptor.VALUE) ? desc.getValue() : oldValue);
            } else if (desc.has(PropertyDescriptor.VALUE)) {
                setArray(getArray().set(index, desc.getValue(), false));
            }
        }

        return true;
    }

    return super.defineOwnProperty(key, propertyDesc, reject);
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:38，代码来源:NativeArguments.java

示例4: 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5: defineOwnProperty

import jdk.nashorn.internal.runtime.PropertyDescriptor; //导入方法依赖的package包/类
/**
 * ECMA 15.4.5.1 [[DefineOwnProperty]] ( P, Desc, Throw )
 */
@Override
public boolean defineOwnProperty(final String key, final Object propertyDesc, final boolean reject) {
    final PropertyDescriptor desc = toPropertyDescriptor(Global.instance(), propertyDesc);

    // never be undefined as "length" is always defined and can't be deleted for arrays
    // Step 1
    final PropertyDescriptor oldLenDesc = (PropertyDescriptor) super.getOwnPropertyDescriptor("length");

    // Step 2
    // get old length and convert to long
    final long oldLen = NativeArray.validLength(oldLenDesc.getValue(), true);

    // Step 3
    if ("length".equals(key)) {
        // check for length being made non-writable
        final boolean result = defineLength(oldLen, oldLenDesc, desc, reject);
        if (desc.has(WRITABLE) && !desc.isWritable()) {
            setIsLengthNotWritable();
        }
        return result;
    }

    // Step 4a
    final int index = ArrayIndex.getArrayIndex(key);
    if (ArrayIndex.isValidArrayIndex(index)) {
        final long longIndex = ArrayIndex.toLongIndex(index);
        // Step 4b
        // setting an element beyond current length, but 'length' is not writable
        if (longIndex >= oldLen && !oldLenDesc.isWritable()) {
            if (reject) {
                throw typeError("property.not.writable", Long.toString(longIndex), ScriptRuntime.safeToString(this));
            }
            return false;
        }

        // Step 4c
        // set the new array element
        final boolean succeeded = super.defineOwnProperty(key, desc, false);

        // Step 4d
        if (!succeeded) {
            if (reject) {
                throw typeError("cant.redefine.property", key, ScriptRuntime.safeToString(this));
            }
            return false;
        }

        // Step 4e -- adjust new length based on new element index that is set
        if (longIndex >= oldLen) {
            oldLenDesc.setValue(longIndex + 1);
            super.defineOwnProperty("length", oldLenDesc, false);
        }

        // Step 4f
        return true;
    }

    // not an index property
    return super.defineOwnProperty(key, desc, reject);
}

开发者ID:SunburstApps，项目名称:OpenJSharp，代码行数:64，代码来源:NativeArray.java

示例6: 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7: defineOwnProperty

import jdk.nashorn.internal.runtime.PropertyDescriptor; //导入方法依赖的package包/类
/**
 * ECMA 15.4.5.1 [[DefineOwnProperty]] ( P, Desc, Throw )
 */
@Override
public boolean defineOwnProperty(final Object key, final Object propertyDesc, final boolean reject) {
    final PropertyDescriptor desc = toPropertyDescriptor(Global.instance(), propertyDesc);

    // never be undefined as "length" is always defined and can't be deleted for arrays
    // Step 1
    final PropertyDescriptor oldLenDesc = (PropertyDescriptor) super.getOwnPropertyDescriptor("length");

    // Step 2
    // get old length and convert to long. Always a Long/Uint32 but we take the safe road.
    final long oldLen = JSType.toUint32(oldLenDesc.getValue());

    // Step 3
    if ("length".equals(key)) {
        // check for length being made non-writable
        final boolean result = defineLength(oldLen, oldLenDesc, desc, reject);
        if (desc.has(WRITABLE) && !desc.isWritable()) {
            setIsLengthNotWritable();
        }
        return result;
    }

    // Step 4a
    final int index = ArrayIndex.getArrayIndex(key);
    if (ArrayIndex.isValidArrayIndex(index)) {
        final long longIndex = ArrayIndex.toLongIndex(index);
        // Step 4b
        // setting an element beyond current length, but 'length' is not writable
        if (longIndex >= oldLen && !oldLenDesc.isWritable()) {
            if (reject) {
                throw typeError("property.not.writable", Long.toString(longIndex), ScriptRuntime.safeToString(this));
            }
            return false;
        }

        // Step 4c
        // set the new array element
        final boolean succeeded = super.defineOwnProperty(key, desc, false);

        // Step 4d
        if (!succeeded) {
            if (reject) {
                throw typeError("cant.redefine.property", key.toString(), ScriptRuntime.safeToString(this));
            }
            return false;
        }

        // Step 4e -- adjust new length based on new element index that is set
        if (longIndex >= oldLen) {
            oldLenDesc.setValue(longIndex + 1);
            super.defineOwnProperty("length", oldLenDesc, false);
        }

        // Step 4f
        return true;
    }

    // not an index property
    return super.defineOwnProperty(key, desc, reject);
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:64，代码来源:NativeArray.java

示例8: 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

示例9: defineOwnProperty

import jdk.nashorn.internal.runtime.PropertyDescriptor; //导入方法依赖的package包/类
/**
 * ECMA 15.4.5.1 [[DefineOwnProperty]] ( P, Desc, Throw )
 */
@Override
public boolean defineOwnProperty(final String key, final Object propertyDesc, final boolean reject) {
    final PropertyDescriptor desc = toPropertyDescriptor(Global.instance(), propertyDesc);

    // never be undefined as "length" is always defined and can't be deleted for arrays
    // Step 1
    final PropertyDescriptor oldLenDesc = (PropertyDescriptor) super.getOwnPropertyDescriptor("length");

    // Step 2
    // get old length and convert to long. Always a Long/Uint32 but we take the safe road.
    final long oldLen = JSType.toUint32(oldLenDesc.getValue());

    // Step 3
    if ("length".equals(key)) {
        // check for length being made non-writable
        final boolean result = defineLength(oldLen, oldLenDesc, desc, reject);
        if (desc.has(WRITABLE) && !desc.isWritable()) {
            setIsLengthNotWritable();
        }
        return result;
    }

    // Step 4a
    final int index = ArrayIndex.getArrayIndex(key);
    if (ArrayIndex.isValidArrayIndex(index)) {
        final long longIndex = ArrayIndex.toLongIndex(index);
        // Step 4b
        // setting an element beyond current length, but 'length' is not writable
        if (longIndex >= oldLen && !oldLenDesc.isWritable()) {
            if (reject) {
                throw typeError("property.not.writable", Long.toString(longIndex), ScriptRuntime.safeToString(this));
            }
            return false;
        }

        // Step 4c
        // set the new array element
        final boolean succeeded = super.defineOwnProperty(key, desc, false);

        // Step 4d
        if (!succeeded) {
            if (reject) {
                throw typeError("cant.redefine.property", key, ScriptRuntime.safeToString(this));
            }
            return false;
        }

        // Step 4e -- adjust new length based on new element index that is set
        if (longIndex >= oldLen) {
            oldLenDesc.setValue(longIndex + 1);
            super.defineOwnProperty("length", oldLenDesc, false);
        }

        // Step 4f
        return true;
    }

    // not an index property
    return super.defineOwnProperty(key, desc, reject);
}

开发者ID:malaporte，项目名称:kaziranga，代码行数:64，代码来源:NativeArray.java

注：本文中的jdk.nashorn.internal.runtime.PropertyDescriptor.has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。