Logging is tuneable for better debugging experience

cmd/demo/main.go

@@ -3,11 +3,13 @@ package main
 import (
 	"log"
 
+	"go.uber.org/zap/zapcore"
+
 	"code.ndumas.com/ndumas/wikilink-parser"
 )
 
 func main() {
-	l := wikilink.Lex("debugLexer", `this is a [[wikilink]]`)
+	l := wikilink.Lex("debugLexer", `this is a [[wikilink]]`, zapcore.InfoLevel)
 	for _, item := range l.Items {
 		item := item
 		log.Printf("%#+v\n", item)

lexer.go

@@ -38,12 +38,12 @@ const (
 	BlockRef  = "#^"
 )
 
-func Lex(name, input string) *Lexer {
+func Lex(name, input string, level zapcore.Level) *Lexer {
 	encoderCfg := zap.NewProductionEncoderConfig()
 	encoderCfg.EncodeTime = zapcore.ISO8601TimeEncoder
 
 	config := zap.Config{
-		Level:         zap.NewAtomicLevelAt(zap.InfoLevel),
+		Level:         zap.NewAtomicLevelAt(level),
 		EncoderConfig: encoderCfg,
 		OutputPaths: []string{
 			"./lexer.log",
@@ -150,7 +150,7 @@ func (l *Lexer) emit(t LexemeType) {
 	L := l.L.Named("emit").With(
 		zap.String("item", i.String()),
 	)
-	L.Debug("emitting lexeme")
+	L.Info("emitting lexeme")
 	l.Items = append(l.Items, i)
 	l.SetStart(l.GetPos())
 	/* original concurrent implementation

lexer_test.go

@@ -3,6 +3,8 @@ package wikilink_test
 import (
 	"testing"
 
+	"go.uber.org/zap/zapcore"
+
 	"code.ndumas.com/ndumas/wikilink-parser"
 )
 
@@ -277,7 +279,7 @@ func mutateTestCase(tc tc, prefix, suffix string, expectedPrefix, expectedSuffix
 
 	return tc, func(t *testing.T) {
 		// t.Parallel()
-		l := wikilink.Lex("testLexer", tc.in)
+		l := wikilink.Lex("testLexer", tc.in, zapcore.WarnLevel)
 		defer l.L.Sync()
 		if len(tc.expected) != len(l.Items) {
 			t.Logf("expected %d tokens, got %d\n", len(tc.expected), len(l.Items))