added:parser tracing for verbose testing

1 files changed, 37 insertions, 0 deletions

diff --git a/parser/parser_tracing.go b/parser/parser_tracing.go
new file mode 100644
index 0000000..a0819da
--- /dev/null
+++ b/parser/parser_tracing.go
@@ -0,0 +1,37 @@
+package parser
+
+import (
+	"fmt"
+	"strings"
+)
+
+var traceLevel int = 0
+
+const traceIdentPlaceholder string = "\t"
+
+func identLevel() string {
+	return strings.Repeat(traceIdentPlaceholder, traceLevel-1)
+}
+
+func tracePrint(fs string) {
+	fmt.Printf("%s%s\n", identLevel(), fs)
+}
+
+func incIdent() {
+	traceLevel = traceLevel + 1
+}
+
+func decIdent() {
+	traceLevel = traceLevel - 1
+}
+
+func trace(msg string) string {
+	incIdent()
+	tracePrint("BEGIN " + msg)
+	return msg
+}
+
+func untrace(msg string) {
+	tracePrint("END " + msg)
+	decIdent()
+}
\ No newline at end of file