Fix value computation for multi-line strings (issue 22993)

pkg/analyzer/test/generated/parser_test.dart

Index: pkg/analyzer/test/generated/parser_test.dart
diff --git a/pkg/analyzer/test/generated/parser_test.dart b/pkg/analyzer/test/generated/parser_test.dart
index 648ea6bfa913931cbcdf119ebd4e015801ca4fba..0b936832d89ddca188e6f43e706dd0b6e091c4b6 100644
--- a/pkg/analyzer/test/generated/parser_test.dart
+++ b/pkg/analyzer/test/generated/parser_test.dart
@@ -8834,6 +8834,82 @@ void''');
     expect(elements[4] is InterpolationString, isTrue);
   }
 
+  void test_parseStringLiteral_multiline_encodedSpace() {
+    SimpleStringLiteral literal =
+        parse4("parseStringLiteral", "'''\\x20\na'''");
+    expect(literal.literal, isNotNull);
+    expect(literal.value, " \na");
+  }
+
+  void test_parseStringLiteral_multiline_escapedBackslash() {
+    SimpleStringLiteral literal = parse4("parseStringLiteral", "'''\\\\\na'''");
+    expect(literal.literal, isNotNull);
+    expect(literal.value, "\\\na");
+  }
+
+  void test_parseStringLiteral_multiline_escapedBackslash_raw() {
+    SimpleStringLiteral literal =
+        parse4("parseStringLiteral", "r'''\\\\\na'''");
+    expect(literal.literal, isNotNull);
+    expect(literal.value, "\\\\\na");
+  }
+
+  void test_parseStringLiteral_multiline_escapedEolMarker() {
+    SimpleStringLiteral literal = parse4("parseStringLiteral", "'''\\\na'''");
+    expect(literal.literal, isNotNull);
+    expect(literal.value, "a");
+  }
+
+  void test_parseStringLiteral_multiline_escapedEolMarker_raw() {
+    SimpleStringLiteral literal = parse4("parseStringLiteral", "r'''\\\na'''");
+    expect(literal.literal, isNotNull);
+    expect(literal.value, "a");
+  }
+
+  void test_parseStringLiteral_multiline_escapedSpaceAndEolMarker() {
+    SimpleStringLiteral literal =
+        parse4("parseStringLiteral", "'''\\ \\\na'''");
+    expect(literal.literal, isNotNull);
+    expect(literal.value, "a");
+  }
+
+  void test_parseStringLiteral_multiline_escapedSpaceAndEolMarker_raw() {
+    SimpleStringLiteral literal =
+        parse4("parseStringLiteral", "'''\\ \\\na'''");

[Paul Berry, 2015/03/26 21:40:52]

Missing the "r" character on this line.

[Brian Wilkerson, 2015/03/26 21:45:21]

Good catch! Done.

+    expect(literal.literal, isNotNull);
+    expect(literal.value, "a");
+  }
+
+  void test_parseStringLiteral_multiline_escapedTab() {
+    SimpleStringLiteral literal = parse4("parseStringLiteral", "'''\\t\na'''");
+    expect(literal.literal, isNotNull);
+    expect(literal.value, "\t\na");
+  }
+
+  void test_parseStringLiteral_multiline_escapedTab_raw() {
+    SimpleStringLiteral literal = parse4("parseStringLiteral", "r'''\\t\na'''");
+    expect(literal.literal, isNotNull);
+    expect(literal.value, "\\t\na");
+  }
+
+  void test_parseStringLiteral_multiline_twoSpaces() {
+    SimpleStringLiteral literal = parse4("parseStringLiteral", "'''  \na'''");
+    expect(literal.literal, isNotNull);
+    expect(literal.value, "a");
+  }
+
+  void test_parseStringLiteral_multiline_twoSpaces_raw() {
+    SimpleStringLiteral literal = parse4("parseStringLiteral", "r'''  \na'''");
+    expect(literal.literal, isNotNull);
+    expect(literal.value, "a");
+  }
+
+  void test_parseStringLiteral_multiline_untrimmed() {
+    SimpleStringLiteral literal = parse4("parseStringLiteral", "''' a\nb'''");
+    expect(literal.literal, isNotNull);
+    expect(literal.value, " a\nb");
+  }
+
   void test_parseStringLiteral_single() {
     SimpleStringLiteral literal = parse4("parseStringLiteral", "'a'");
     expect(literal.literal, isNotNull);