adding the rest of vern's filesflex-2-5-5b

1 files changed, 58 insertions, 0 deletions

diff --git a/examples/testxxLexer.l b/examples/testxxLexer.l
new file mode 100644
index 0000000..9421541
--- /dev/null
+++ b/examples/testxxLexer.l
@@ -0,0 +1,58 @@
+	// An example of using the flex C++ scanner class.
+
+%option C++ noyywrap
+
+%{
+int mylineno = 0;
+%}
+
+string	\"[^\n"]+\"
+
+ws	[ \t]+
+
+alpha	[A-Za-z]
+dig	[0-9]
+name	({alpha}|{dig}|\$)({alpha}|{dig}|\_|\.|\-|\/|\$)*
+num1	[-+]?{dig}+\.?([eE][-+]?{dig}+)?
+num2	[-+]?{dig}*\.{dig}+([eE][-+]?{dig}+)?
+number	{num1}|{num2}
+
+%%
+
+{ws}	/* skip blanks and tabs */
+
+"/*"		{
+		int c;
+
+		while((c = yyinput()) != 0)
+			{
+			if(c == '\n')
+				++mylineno;
+
+			else if(c == '*')
+				{
+				if((c = yyinput()) == '/')
+					break;
+				else
+					unput(c);
+				}
+			}
+		}
+
+{number}	cout << "number " << YYText() << '\n';
+
+\n		mylineno++;
+
+{name}		cout << "name " << YYText() << '\n';
+
+{string}	cout << "string " << YYText() << '\n';
+
+%%
+
+int main( int /* argc */, char** /* argv */ )
+	{
+	FlexLexer* lexer = new yyFlexLexer;
+	while(lexer->yylex() != 0)
+		;
+	return 0;
+	}