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Add a child to this node. If adding a text node it is automatically merged with the trailing text node (if applicable). If the node is arlready parented thorw ArgErr. Return this.

Convenicence to call add for each node in the given list.

Get a readonly list of this elements's children.

Return a negative integer, zero, or a positive integer if this object is less than, equal to, or greater than the specified object:

this < that   =>  <0
this == that  =>  0
this > that   =>  >0
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This method may also be accessed via the < <= <=> >= and > shortcut operators. If not overridden the default implementation compares the toStr representations. Also see docLang.

Examples:

3.compare(8)  =>  -1
8.compare(3)  =>  1
8.compare(8)  =>  0
3 <=> 8       =>  -1  // shortcut for 3.compare(8)
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Debug dump to output stream.

Iterate the children nodes

Compare this object to the specified for equality. This method may be accessed via the == and != shortcut operators. If not overridden the default implementation compares for reference equality using the === operator. If this method is overridden, then hash() must also be overridden such that any two objects which return true for equals() must return the same value for hash(). This method must accept null and return false.

Return a unique hashcode for this object. If a class overrides hash() then it must ensure if equals() returns true for any two objects then they have same hash code.

Insert a child node at the specified index. A negative index may be used to access an index from the end of the list. If adding a text node it is automatically merged with surrounding text nodes (if applicable). If the node is already parented throws ArgErr.

Is this a block element versus an inline element.

Return true if this node is the first child in its parent.

Return if this Obj is immutable and safe to share between threads:

• an instance of a const class
• the result of toImmutable on List, Map, or Buf
• a Func object may or may not be immutable - see sys::Func.
• other instances are assumed mutable and return false

Return true if this node is the last child in its parent.

Get the DocElem that contains this node. Return null if not parented.

Get the DocElem that contains this node. Return null if not parented.

Covariant override to narrow path to list of DocElem.

Get the index of this node in its parent's children. Return null if not parented.

Remove a child node. If this element is not the child's current parent throw ArgErr. Return this.

Remove all child nodes. Return this.

Get an immutable representation of this instance or throw NotImmutableErr if this object cannot be represented as an immutable:

• if type is const, return this
• if already an immutable List, Map, Buf, or Func return this
• if a List, then attempt to perform a deep clone by calling toImmutable on all items
• if a Map, then attempt to perform a deep clone by calling toImmutable on all values (keys are already immutable)
• some Funcs can be made immutable - see sys::Func
• if a Buf create immutable copy, see sys::Buf
• any other object throws NotImmutableErr

Return a string representation of this object.

Get all the DocText children as a string

Trap a dynamic call for handling. Dynamic calls are invoked with the -> shortcut operator:

a->x        a.trap("x", null)
a->x()      a.trap("x", null)
a->x = b    a.trap("x", [b])
a->x(b)     a.trap("x", [b])
a->x(b, c)  a.trap("x", [b, c])
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The default implementation provided by Obj attempts to use reflection. If name maps to a method, it is invoked with the specified arguments. If name maps to a field and args.size is zero, get the field. If name maps to a field and args.size is one, set the field and return args[0]. Otherwise throw UnknownSlotErr.

Get the Type instance which represents this object's class. Also seeType.of or Pod.of.

This method called whenever an it-block is applied to an object. The default implementation calls the function with this, and then returns this.

Write this element and its children to the specified DocWriter.

Write this element's children to the specified DocWriter.

Write x.toStr to standard output followed by newline. If x is null then print "null". If no argument is provided then print an empty line.