From cdf964f604c65205e238fd843934d5cbc3dc1483 Mon Sep 17 00:00:00 2001
From: "Michael K." <130953568+kmichaelk@users.noreply.github.com>
Date: Wed, 25 Sep 2024 13:19:06 +0300
Subject: [PATCH] Fix parsing of multiline string literals (#763)

---
 ttcn3/syntax/scanner.go      |  1 -
 ttcn3/syntax/scanner_test.go | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/ttcn3/syntax/scanner.go b/ttcn3/syntax/scanner.go
index 9cef1dd3..37086f86 100644
--- a/ttcn3/syntax/scanner.go
+++ b/ttcn3/syntax/scanner.go
@@ -254,7 +254,6 @@ func (s *Scanner) scanString() Kind {
 		switch ch := s.src[s.pos]; ch {
 		case '\n', '\v', '\f':
 			s.lines = append(s.lines, s.pos+1)
-			s.pos++
 		case '\\':
 			s.pos++
 		case '"':
diff --git a/ttcn3/syntax/scanner_test.go b/ttcn3/syntax/scanner_test.go
index 578fb626..04ae5397 100644
--- a/ttcn3/syntax/scanner_test.go
+++ b/ttcn3/syntax/scanner_test.go
@@ -23,6 +23,39 @@ func TestTokenize(t *testing.T) {
 			`COMMENT "//"`,
 			`EOF`,
 		}},
+		{`"str"
+				`, []string{
+			`STRING "\"str\""`,
+			`EOF`,
+		}},
+		{`"multiline
+str"
+`, []string{
+			`STRING "\"multiline\nstr\""`,
+			`EOF`,
+		}},
+		{`"
+multiline
+str"
+`, []string{
+			`STRING "\"\nmultiline\nstr\""`,
+			`EOF`,
+		}},
+		{`"multiline
+str
+"
+`, []string{
+			`STRING "\"multiline\nstr\n\""`,
+			`EOF`,
+		}},
+		{`"
+multiline
+str
+"
+`, []string{
+			`STRING "\"\nmultiline\nstr\n\""`,
+			`EOF`,
+		}},
 	}
 	for _, test := range tests {
 		root := Tokenize([]byte(test.input))