BranchNode
}

func (t *Tree) newRange(pos Pos, line int, pipe *PipeNode, list, elseList *ListNode) *RangeNode {
	return &RangeNode{BranchNode{tr: t, NodeType: NodeRange, Pos: pos, Line: line, Pipe: pipe, List: list, ElseList: elseList}}
}

func (r *RangeNode) Copy() Node {
	return r.tr.newRange(r.Pos, r.Line, r.Pipe.CopyPipe(), r.List.CopyList(), r.ElseList.CopyList())
}

// WithNode represents a {{with}} action and its commands.

		if context == "if" && t.peek().typ == itemIf {
			t.next() // Consume the "if" token.
			elseList = t.newList(next.Position())
			elseList.append(t.ifControl())
		} else if context == "with" && t.peek().typ == itemWith {
			t.next()
			elseList = t.newList(next.Position())
			elseList.append(t.withControl())
		} else {
			elseList, next = t.itemList()
			if next.Type() != nodeEnd {
				t.errorf("expected end; found %s", next)

		s.walkIfOrWith(parse.NodeWith, dot, node.Pipe, node.List, node.ElseList)
	default:
		s.errorf("unknown node: %s", node)
	}
}

// walkIfOrWith walks an 'if' or 'with' node. The two control structures
// are identical in behavior except that 'with' sets dot.
func (s *state) walkIfOrWith(typ parse.NodeType, dot reflect.Value, pipe *parse.PipeNode, list, elseList *parse.ListNode) {
	defer s.pop(s.mark())

			return c0
		}
		c0 = joinRange(c0, e.rangeContext)
		e.rangeContext = e.rangeContext.outer
		if c0.state == stateError {
			return c0
		}
	}
	c1 := e.escapeList(c, n.ElseList)
	return join(c0, c1, n, nodeName)
}

func joinRange(c0 context, rc *rangeContext) context {
	// Merge contexts at break and continue statements into overall body context.

		{"ActionNode.Pos", Field, 1},
		{"BoolNode", Type, 0},
		{"BoolNode.NodeType", Field, 0},
		{"BoolNode.Pos", Field, 1},
		{"BoolNode.True", Field, 0},
		{"BranchNode", Type, 0},
		{"BranchNode.ElseList", Field, 0},
		{"BranchNode.Line", Field, 0},
		{"BranchNode.List", Field, 0},
		{"BranchNode.NodeType", Field, 0},
		{"BranchNode.Pipe", Field, 0},
		{"BranchNode.Pos", Field, 1},

pkg text/template/parse, type BoolNode struct, True bool
pkg text/template/parse, type BoolNode struct, embedded NodeType
pkg text/template/parse, type BranchNode struct
pkg text/template/parse, type BranchNode struct, ElseList *ListNode
pkg text/template/parse, type BranchNode struct, Line int
pkg text/template/parse, type BranchNode struct, List *ListNode
pkg text/template/parse, type BranchNode struct, Pipe *PipeNode