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-rw-r--r--src/pkg/html/node.go154
1 files changed, 0 insertions, 154 deletions
diff --git a/src/pkg/html/node.go b/src/pkg/html/node.go
deleted file mode 100644
index 83f17308b1..0000000000
--- a/src/pkg/html/node.go
+++ /dev/null
@@ -1,154 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package html
-
-// A NodeType is the type of a Node.
-type NodeType int
-
-const (
- ErrorNode NodeType = iota
- TextNode
- DocumentNode
- ElementNode
- CommentNode
- DoctypeNode
- scopeMarkerNode
-)
-
-// Section 12.2.3.3 says "scope markers are inserted when entering applet
-// elements, buttons, object elements, marquees, table cells, and table
-// captions, and are used to prevent formatting from 'leaking'".
-var scopeMarker = Node{Type: scopeMarkerNode}
-
-// A Node consists of a NodeType and some Data (tag name for element nodes,
-// content for text) and are part of a tree of Nodes. Element nodes may also
-// have a Namespace and contain a slice of Attributes. Data is unescaped, so
-// that it looks like "a<b" rather than "a&lt;b".
-//
-// An empty Namespace implies a "http://www.w3.org/1999/xhtml" namespace.
-// Similarly, "math" is short for "http://www.w3.org/1998/Math/MathML", and
-// "svg" is short for "http://www.w3.org/2000/svg".
-type Node struct {
- Parent *Node
- Child []*Node
- Type NodeType
- Data string
- Namespace string
- Attr []Attribute
-}
-
-// Add adds a node as a child of n.
-// It will panic if the child's parent is not nil.
-func (n *Node) Add(child *Node) {
- if child.Parent != nil {
- panic("html: Node.Add called for a child Node that already has a parent")
- }
- child.Parent = n
- n.Child = append(n.Child, child)
-}
-
-// Remove removes a node as a child of n.
-// It will panic if the child's parent is not n.
-func (n *Node) Remove(child *Node) {
- if child.Parent == n {
- child.Parent = nil
- for i, m := range n.Child {
- if m == child {
- copy(n.Child[i:], n.Child[i+1:])
- j := len(n.Child) - 1
- n.Child[j] = nil
- n.Child = n.Child[:j]
- return
- }
- }
- }
- panic("html: Node.Remove called for a non-child Node")
-}
-
-// reparentChildren reparents all of src's child nodes to dst.
-func reparentChildren(dst, src *Node) {
- for _, n := range src.Child {
- if n.Parent != src {
- panic("html: nodes have an inconsistent parent/child relationship")
- }
- n.Parent = dst
- }
- dst.Child = append(dst.Child, src.Child...)
- src.Child = nil
-}
-
-// clone returns a new node with the same type, data and attributes.
-// The clone has no parent and no children.
-func (n *Node) clone() *Node {
- m := &Node{
- Type: n.Type,
- Data: n.Data,
- Attr: make([]Attribute, len(n.Attr)),
- }
- copy(m.Attr, n.Attr)
- return m
-}
-
-// nodeStack is a stack of nodes.
-type nodeStack []*Node
-
-// pop pops the stack. It will panic if s is empty.
-func (s *nodeStack) pop() *Node {
- i := len(*s)
- n := (*s)[i-1]
- *s = (*s)[:i-1]
- return n
-}
-
-// top returns the most recently pushed node, or nil if s is empty.
-func (s *nodeStack) top() *Node {
- if i := len(*s); i > 0 {
- return (*s)[i-1]
- }
- return nil
-}
-
-// index returns the index of the top-most occurence of n in the stack, or -1
-// if n is not present.
-func (s *nodeStack) index(n *Node) int {
- for i := len(*s) - 1; i >= 0; i-- {
- if (*s)[i] == n {
- return i
- }
- }
- return -1
-}
-
-// insert inserts a node at the given index.
-func (s *nodeStack) insert(i int, n *Node) {
- (*s) = append(*s, nil)
- copy((*s)[i+1:], (*s)[i:])
- (*s)[i] = n
-}
-
-// remove removes a node from the stack. It is a no-op if n is not present.
-func (s *nodeStack) remove(n *Node) {
- i := s.index(n)
- if i == -1 {
- return
- }
- copy((*s)[i:], (*s)[i+1:])
- j := len(*s) - 1
- (*s)[j] = nil
- *s = (*s)[:j]
-}
-
-// TODO(nigeltao): forTag no longer used. Should it be deleted?
-
-// forTag returns the top-most element node with the given tag.
-func (s *nodeStack) forTag(tag string) *Node {
- for i := len(*s) - 1; i >= 0; i-- {
- n := (*s)[i]
- if n.Type == ElementNode && n.Data == tag {
- return n
- }
- }
- return nil
-}