internal: Make a function operate internal to parsetools
In parsetools: Parse Tools

Convert a function to look for pd object in the parent.frame(), and the id to extract from the pd unless overwritten.

These functions are for internal use but are documented here for reference.

internal(fun, id = pd$id)

token(id = pd$id, pd = get("pd", parent.frame()))

text(id = pd$id, pd = get("pd", parent.frame()))

nodes(id, pd = get("pd", parent.frame()))

start_line(id, pd = get("pd", parent.frame()))

start_col(id, pd = get("pd", parent.frame()))

end_line(id, pd = get("pd", parent.frame()))

end_col(id, pd = get("pd", parent.frame()))

filename(pd = get("pd", parent.frame()))

lines(id, pd = get("pd", parent.frame()))

is_terminal(id, pd = get("pd", parent.frame()))

is_first_on_line(id, pd = get("pd", parent.frame()))

is_last_on_line(id, pd = get("pd", parent.frame()))

spans_multiple_lines(id, pd = get("pd", parent.frame()))

terminal_ids_on_line(line, pd = get("pd", parent.frame()))

ids_starting_on_line(line, pd = get("pd", parent.frame()))

ids_ending_on_line(line, pd = get("pd", parent.frame()))

prev_terminal(id = pd$id, pd = get("pd", parent.frame()))

expr_text(id, pd = get("pd", parent.frame()))

`fun`	The function to make internal
`id`	the ID of the expression
`pd`	the parse data.
`line`	a line number

token: Extract the token
text: Extract the text
nodes: Extract only the specified node(s).
start_line: Get the line the expression starts on.
start_col: Get the column the expression starts on.
end_line: Get the line the expression ends on.
end_col: Get the column the expression ends on.
filename: Extract the filename if available, otherwise return "<UNKNOWN>".
lines: Extract the lines of text.
is_terminal: does id represent a terminal node.
is_first_on_line: is an expression the first one on a line?
is_last_on_line: Is expression the last terminal node on the line?
spans_multiple_lines: does the expression span multiple lines?
terminal_ids_on_line: Get the ids on a given line that are terminal nodes.
ids_starting_on_line: Get ids for nodes that start on the given line
ids_ending_on_line: Get ids for nodes that end on the given line
prev_terminal: Get the id for the terminal expression that is immediately prior to the one given.
expr_text: If id represents an expr token reiterate on the firstborn. Throws an error if anything but an expression or text if found.