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- // An example of using the flex C++ scanner class.
-
- %{
- 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;
- }
-