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;
}
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);
}
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);
}
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;
}
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);
}
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;
}
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);
}
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;
}
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);
}