prog4.t

编译原理“龙书”(Compilers: Principles, Techniques, and Tools)中提供的一个小型Syntax-Directed Translator

{
	int BLANK; int TAB; int NEWLINE; int peek; int line; int readch;

	while( true ) {
		if( peek == BLANK || peek == TAB ) ;
		else if( peek == NEWLINE ) line = line + 1;
		else break;
		peek = readch;
	}
}