Add '%char%' as pattern to match in Token::Match.

All and only those single characters enclosed in "'" are accepted.

lib/token.cpp

@@ -621,6 +621,15 @@ bool Token::Match(const Token *tok, const char pattern[], unsigned int varid)
                 patternUnderstood = true;
             }
             break;
+            case 'c':
+                // Character (%char%)
+            {
+                if (tok->_type != eChar)
+                    return false;
+                p += 6;
+                patternUnderstood = true;
+            }
+            break;
             case 's':
                 // String (%str%)
             {

lib/token.h

@@ -123,6 +123,7 @@ public:
      * - "%type%" Anything that can be a variable type, e.g. "int", but not "delete".
      * - "%num%" Any numeric token, e.g. "23"
      * - "%bool%" true or false
+     * - "%char%" Any token enclosed in '-character.
      * - "%str%" Any token starting with "-character (C-string).
      * - "%varid%" Match with parameter varid
      * - "%or%" A bitwise-or operator '|'

test/testtoken.cpp

@@ -56,6 +56,7 @@ private:
         TEST_CASE(matchSingleChar);
         TEST_CASE(matchNothingOrAnyNotElse);
         TEST_CASE(matchType);
+        TEST_CASE(matchChar);
         TEST_CASE(matchStr);
         TEST_CASE(matchVarid);
         TEST_CASE(matchNumeric);
@@ -276,6 +277,17 @@ private:
         ASSERT_EQUALS(false, Token::Match(noType.tokens(), "%type%"));
     }
 
+    void matchChar() {
+        givenACodeSampleToTokenize chr1("'a'", true);
+        ASSERT_EQUALS(true, Token::Match(chr1.tokens(), "%char%"));
+
+        givenACodeSampleToTokenize chr2("'1'", true);
+        ASSERT_EQUALS(true, Token::Match(chr2.tokens(), "%char%"));
+
+        givenACodeSampleToTokenize noChr("\"10\"", true);
+        ASSERT_EQUALS(false, Token::Match(noChr.tokens(), "%char%"));
+    }
+
     void matchStr() {
         givenACodeSampleToTokenize noStr1("abc", true);
         ASSERT_EQUALS(false, Token::Match(noStr1.tokens(), "%str%"));