def _nt_primary
start_index = index
if node_cache[:primary].has_key?(index)
cached = node_cache[:primary][index]
if cached
cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
@index = cached.interval.end
end
return cached
end
i0, s0 = index, []
i2, s2 = index, []
r3 = _nt_day_of_week
s2 << r3
if r3
if has_terminal?(",", false, index)
r4 = instantiate_node(SyntaxNode,input, index...(index + 1))
@index += 1
else
terminal_parse_failure(",")
r4 = nil
end
s2 << r4
end
if s2.last
r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
r2.extend(Primary0)
else
@index = i2
r2 = nil
end
if r2
r1 = r2
else
r1 = instantiate_node(SyntaxNode,input, index...index)
end
s0 << r1
if r1
r5 = _nt_date
s0 << r5
if r5
r6 = _nt_FWS
s0 << r6
if r6
r7 = _nt_time
s0 << r7
if r7
r9 = _nt_CFWS
if r9
r8 = r9
else
r8 = instantiate_node(SyntaxNode,input, index...index)
end
s0 << r8
end
end
end
end
if s0.last
r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
r0.extend(Primary1)
else
@index = i0
r0 = nil
end
node_cache[:primary][start_index] = r0
r0
end