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Diffstat (limited to 'src/xml/scala/xml/MetaData.scala')
| -rw-r--r-- | src/xml/scala/xml/MetaData.scala | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/src/xml/scala/xml/MetaData.scala b/src/xml/scala/xml/MetaData.scala deleted file mode 100644 index 8b5ea187cb..0000000000 --- a/src/xml/scala/xml/MetaData.scala +++ /dev/null @@ -1,217 +0,0 @@ -/* __ *\ -** ________ ___ / / ___ Scala API ** -** / __/ __// _ | / / / _ | (c) 2003-2013, LAMP/EPFL ** -** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ ** -** /____/\___/_/ |_/____/_/ | | ** -** |/ ** -\* */ - -package scala -package xml - -import Utility.sbToString -import scala.annotation.tailrec -import scala.collection.{ AbstractIterable, Iterator } - -/** - * Copyright 2008 Google Inc. All Rights Reserved. - * @author Burak Emir <bqe@google.com> - */ -object MetaData { - /** - * appends all attributes from new_tail to attribs, without attempting to - * detect or remove duplicates. The method guarantees that all attributes - * from attribs come before the attributes in new_tail, but does not - * guarantee to preserve the relative order of attribs. - * - * Duplicates can be removed with `normalize`. - */ - @tailrec // temporarily marked final so it will compile under -Xexperimental - final def concatenate(attribs: MetaData, new_tail: MetaData): MetaData = - if (attribs eq Null) new_tail - else concatenate(attribs.next, attribs copy new_tail) - - /** - * returns normalized MetaData, with all duplicates removed and namespace prefixes resolved to - * namespace URIs via the given scope. - */ - def normalize(attribs: MetaData, scope: NamespaceBinding): MetaData = { - def iterate(md: MetaData, normalized_attribs: MetaData, set: Set[String]): MetaData = { - lazy val key = getUniversalKey(md, scope) - if (md eq Null) normalized_attribs - else if ((md.value eq null) || set(key)) iterate(md.next, normalized_attribs, set) - else md copy iterate(md.next, normalized_attribs, set + key) - } - iterate(attribs, Null, Set()) - } - - /** - * returns key if md is unprefixed, pre+key is md is prefixed - */ - def getUniversalKey(attrib: MetaData, scope: NamespaceBinding) = attrib match { - case prefixed: PrefixedAttribute => scope.getURI(prefixed.pre) + prefixed.key - case unprefixed: UnprefixedAttribute => unprefixed.key - } - - /** - * returns MetaData with attributes updated from given MetaData - */ - def update(attribs: MetaData, scope: NamespaceBinding, updates: MetaData): MetaData = - normalize(concatenate(updates, attribs), scope) - -} - -/** This class represents an attribute and at the same time a linked list of - * attributes. Every instance of this class is either - * - an instance of `UnprefixedAttribute key,value` or - * - an instance of `PrefixedAttribute namespace_prefix,key,value` or - * - `Null, the empty attribute list. - * - * Namespace URIs are obtained by using the namespace scope of the element - * owning this attribute (see `getNamespace`). - * - * Copyright 2008 Google Inc. All Rights Reserved. - * @author Burak Emir <bqe@google.com> - */ -abstract class MetaData -extends AbstractIterable[MetaData] - with Iterable[MetaData] - with Equality - with Serializable { - - /** Updates this MetaData with the MetaData given as argument. All attributes that occur in updates - * are part of the resulting MetaData. If an attribute occurs in both this instance and - * updates, only the one in updates is part of the result (avoiding duplicates). For prefixed - * attributes, namespaces are resolved using the given scope, which defaults to TopScope. - * - * @param updates MetaData with new and updated attributes - * @return a new MetaData instance that contains old, new and updated attributes - */ - def append(updates: MetaData, scope: NamespaceBinding = TopScope): MetaData = - MetaData.update(this, scope, updates) - - /** - * Gets value of unqualified (unprefixed) attribute with given key, null if not found - * - * @param key - * @return value as Seq[Node] if key is found, null otherwise - */ - def apply(key: String): Seq[Node] - - /** convenience method, same as `apply(namespace, owner.scope, key)`. - * - * @param namespace_uri namespace uri of key - * @param owner the element owning this attribute list - * @param key the attribute key - */ - final def apply(namespace_uri: String, owner: Node, key: String): Seq[Node] = - apply(namespace_uri, owner.scope, key) - - /** - * Gets value of prefixed attribute with given key and namespace, null if not found - * - * @param namespace_uri namespace uri of key - * @param scp a namespace scp (usually of the element owning this attribute list) - * @param k to be looked for - * @return value as Seq[Node] if key is found, null otherwise - */ - def apply(namespace_uri: String, scp: NamespaceBinding, k: String): Seq[Node] - - /** returns a copy of this MetaData item with next field set to argument. - */ - def copy(next: MetaData): MetaData - - /** if owner is the element of this metadata item, returns namespace */ - def getNamespace(owner: Node): String - - def hasNext = (Null != next) - - def length: Int = length(0) - - def length(i: Int): Int = next.length(i + 1) - - def isPrefixed: Boolean - - override def canEqual(other: Any) = other match { - case _: MetaData => true - case _ => false - } - override def strict_==(other: Equality) = other match { - case m: MetaData => this.asAttrMap == m.asAttrMap - case _ => false - } - protected def basisForHashCode: Seq[Any] = List(this.asAttrMap) - - /** filters this sequence of meta data */ - override def filter(f: MetaData => Boolean): MetaData = - if (f(this)) copy(next filter f) - else next filter f - - /** returns key of this MetaData item */ - def key: String - - /** returns value of this MetaData item */ - def value: Seq[Node] - - /** Returns a String containing "prefix:key" if the first key is - * prefixed, and "key" otherwise. - */ - def prefixedKey = this match { - case x: Attribute if x.isPrefixed => x.pre + ":" + key - case _ => key - } - - /** Returns a Map containing the attributes stored as key/value pairs. - */ - def asAttrMap: Map[String, String] = - (iterator map (x => (x.prefixedKey, x.value.text))).toMap - - /** returns Null or the next MetaData item */ - def next: MetaData - - /** - * Gets value of unqualified (unprefixed) attribute with given key, None if not found - * - * @param key - * @return value in Some(Seq[Node]) if key is found, None otherwise - */ - final def get(key: String): Option[Seq[Node]] = Option(apply(key)) - - /** same as get(uri, owner.scope, key) */ - final def get(uri: String, owner: Node, key: String): Option[Seq[Node]] = - get(uri, owner.scope, key) - - /** gets value of qualified (prefixed) attribute with given key. - * - * @param uri namespace of key - * @param scope a namespace scp (usually of the element owning this attribute list) - * @param key to be looked fore - * @return value as Some[Seq[Node]] if key is found, None otherwise - */ - final def get(uri: String, scope: NamespaceBinding, key: String): Option[Seq[Node]] = - Option(apply(uri, scope, key)) - - protected def toString1(): String = sbToString(toString1) - - // appends string representations of single attribute to StringBuilder - protected def toString1(sb: StringBuilder): Unit - - override def toString(): String = sbToString(buildString) - - def buildString(sb: StringBuilder): StringBuilder = { - sb append ' ' - toString1(sb) - next buildString sb - } - - /** - */ - def wellformed(scope: NamespaceBinding): Boolean - - def remove(key: String): MetaData - - def remove(namespace: String, scope: NamespaceBinding, key: String): MetaData - - final def remove(namespace: String, owner: Node, key: String): MetaData = - remove(namespace, owner.scope, key) -} |