class AST

AST Node Interface.

implemented by ValueStream and Cell.

index

members

• ast:eval(scope)  – evaluate this AST Node.
• ast:clone(parent)  – create a clone with its own identity.
• ast:stringify()  – stringify this AST Node.

details

members

• ast:eval(scope)  – evaluate this AST Node.
  Evaluate this node and return a Result.

  parameters:

  • scope (Scope): the scope to evaluate in

  returns:

  1. (Result): the evaluation result
• ast:clone(parent)  – create a clone with its own identity.
  creates a clone of this Cell with its own identity by prepending a parent Tag (and cloning all child expressions recursively).

  parameters:

  • parent (Tag)

  returns:

  1. (AST)
• ast:stringify()  – stringify this AST Node.
  Should return the exact string this node was parsed from (if it was parsed).

  returns:

  1. (string): the exact string this Node was parsed from