code optimization and add ignore file (glebarez#149)

Author: testwill

.gitignore

@@ -0,0 +1 @@
+.idea/

ddlmod.go

@@ -13,12 +13,12 @@ import (
 
 var (
 	sqliteSeparator    = "`|\"|'|\t"
-	indexRegexp        = regexp.MustCompile(fmt.Sprintf("(?is)CREATE(?: UNIQUE)? INDEX [%v]?[\\w\\d-]+[%v]? ON (.*)$", sqliteSeparator, sqliteSeparator))
-	tableRegexp        = regexp.MustCompile(fmt.Sprintf("(?is)(CREATE TABLE [%v]?[\\w\\d-]+[%v]?)(?:\\s*\\((.*)\\))?", sqliteSeparator, sqliteSeparator))
+	indexRegexp        = regexp.MustCompile(fmt.Sprintf(`(?is)CREATE(?: UNIQUE)? INDEX [%v]?[\w\d-]+[%v]? ON (.*)$`, sqliteSeparator, sqliteSeparator))
+	tableRegexp        = regexp.MustCompile(fmt.Sprintf(`(?is)(CREATE TABLE [%v]?[\w\d-]+[%v]?)(?:\s*\((.*)\))?`, sqliteSeparator, sqliteSeparator))
 	separatorRegexp    = regexp.MustCompile(fmt.Sprintf("[%v]", sqliteSeparator))
-	columnsRegexp      = regexp.MustCompile(fmt.Sprintf("[(,][%v]?(\\w+)[%v]?", sqliteSeparator, sqliteSeparator))
-	columnRegexp       = regexp.MustCompile(fmt.Sprintf("^[%v]?([\\w\\d]+)[%v]?\\s+([\\w\\(\\)\\d]+)(.*)$", sqliteSeparator, sqliteSeparator))
-	defaultValueRegexp = regexp.MustCompile("(?i) DEFAULT \\(?(.+)?\\)?( |COLLATE|GENERATED|$)")
+	columnsRegexp      = regexp.MustCompile(fmt.Sprintf(`[(,][%v]?(\w+)[%v]?`, sqliteSeparator, sqliteSeparator))
+	columnRegexp       = regexp.MustCompile(fmt.Sprintf(`^[%v]?([\w\d]+)[%v]?\s+([\w\(\)\d]+)(.*)$`, sqliteSeparator, sqliteSeparator))
+	defaultValueRegexp = regexp.MustCompile(`(?i) DEFAULT \(?(.+)?\)?( |COLLATE|GENERATED|$)`)
 	regRealDataType    = regexp.MustCompile(`[^\d](\d+)[^\d]?`)
 )