matches the type and the children of a node with the given patterns

captures the match

wildcard, matches anything

matches the pattern against the parent

first is a wildcard, others must match

matches the pattern against the descendants

matches any number of children

calls `predicate?` on the element to match

calls `int_type?` on the element

calls `method` with element as first argument

matches a variable number of children

matches sequential argument with `=== element`

matches the patterns in any order

matches named argument with `=== element`

matches either `pat pat2` or `pat 3`

matches the constant with `=== element`

shortcut for "{pat | pat2}"

comment

matches all patterns