From b4f5fb423e5dec43ec702987dc3ddcb9df317d75 Mon Sep 17 00:00:00 2001 From: Adam Scarr Date: Mon, 7 Aug 2017 21:57:12 +1000 Subject: Fast single byte matcher --- parser.go | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'parser.go') diff --git a/parser.go b/parser.go index c6d7f9b..2477bb4 100644 --- a/parser.go +++ b/parser.go @@ -81,6 +81,21 @@ func ParseString(parser Parserish, input string) (result interface{}, remaining } func Exact(match string) Parser { + if len(match) == 1 { + matchByte := match[0] + return NewParser(match, func(ps *State) Node { + ps.AutoWS() + if ps.Input[ps.Pos] != matchByte { + ps.ErrorHere(match) + return Node{} + } + + ps.Advance(1) + + return Node{Token: match} + }) + } + return NewParser(match, func(ps *State) Node { ps.AutoWS() if !strings.HasPrefix(ps.Get(), match) { -- cgit v1.2.3