parser: introduce Token and TokenType enum

Signed-off-by: Alejandro Mery <amery@jpi.io>

parser/tokentype_string.go

@@ -0,0 +1,28 @@
+// Code generated by "stringer -type=TokenType"; DO NOT EDIT.
+
+package parser
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[TokenUnknown-0]
+	_ = x[TokenSectionName-1]
+	_ = x[TokenSectionSubname-2]
+	_ = x[TokenComment-3]
+	_ = x[TokenFieldKey-4]
+	_ = x[TokenFieldValue-5]
+}
+
+const _TokenType_name = "TokenUnknownTokenSectionNameTokenSectionSubnameTokenCommentTokenFieldKeyTokenFieldValue"
+
+var _TokenType_index = [...]uint8{0, 12, 28, 47, 59, 72, 87}
+
+func (i TokenType) String() string {
+	if i >= TokenType(len(_TokenType_index)-1) {
+		return "TokenType(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _TokenType_name[_TokenType_index[i]:_TokenType_index[i+1]]
+}