From 071bf92c4fa431a2d7c7e8561c4eb85ea13607d0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20Teichgr=C3=A4ber?= <mt@ib.wmipf.de>
Date: Wed, 24 Nov 2010 19:36:10 +0100
Subject: [PATCH] use a single yyParser instance only, and reuse initialized
 parser

---
 markdown.go | 19 ++++++++++---------
 parser.leg  |  2 ++
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/markdown.go b/markdown.go
index cc32873..81a2528 100644
--- a/markdown.go
+++ b/markdown.go
@@ -22,6 +22,7 @@ package markdown
 import (
 	"strings"
 	"bytes"
+	"log"
 )
 
 // Markdown Extensions:
@@ -37,6 +38,10 @@ func Parse(text string, extFlags int) *Doc {
 	d := new(Doc)
 	d.syntaxExtensions = extFlags
 
+	d.parser = new(yyParser)
+	d.parser.Doc = d
+	d.parser.Init()
+
 	s := preformat(text)
 
 	d.parseRule(ruleReferences, s)
@@ -49,21 +54,17 @@ func Parse(text string, extFlags int) *Doc {
 }
 
 func (d *Doc) parseRule(rule int, s string) {
-	m := new(yyParser)
-	m.Doc = d
-	m.Init()
-	m.Buffer = s
+	m := d.parser
+	if m.ResetBuffer(s) != "" {
+		log.Exitf("Buffer not empty")
+	}
 	if !m.Parse(rule) {
 		m.PrintError()
 	}
 }
 
 func (d *Doc) parseMarkdown(text string) *element {
-	m := new(yyParser)
-	m.Doc = d
-	m.Init()
-	m.Buffer = text
-	m.Parse(ruleDoc)
+	d.parseRule(ruleDoc, text)
 	return d.tree
 }
 
diff --git a/parser.leg b/parser.leg
index 3ea586f..4d38a26 100644
--- a/parser.leg
+++ b/parser.leg
@@ -87,6 +87,8 @@ const (
 )
 
 type Doc struct {
+	parser	*yyParser
+
 	tree				*element	/* Results of parse. */
 	references			*element	/* List of link references found. */
 	notes				*element	/* List of footnotes found. */