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16 lines
772 B
Text
16 lines
772 B
Text
The program using our tt(Scanner) is very simple. It expects a filename
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indicating where to start the scanning process.
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The program first checks the number of arguments. If at least one argument was
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given, then that argument is passed to tt(Scanner)'s constructor, together
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with a second argument tt("-"), indicating that the output should go to the
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standard output stream.
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If the program receives more than one argument debug output, extensively
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documenting the lexical scanner's actions, is written to the standard output
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stream as well.
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Next the tt(Scanner)'s tt(lex) member is called. If anything fails, a
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tt(std::exception) is thrown, which is caught by tt(main)'s try-block's catch
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clause. Here is the program's source:
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verbinclude(-a lexer/lexer.cc)
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