11.1 A new way of reading

There is only one way in Bigloo to read text, regular reading, which is done by the new form:

bigloo procedure: read/rp regular-grammar input-port

The first argument is a regular grammar (also known as regular analyser) and the second a Scheme port. This way of reading is almost the same as the Lex’s one. The reader tries to match the longest input, from the stream pointed to by input-port, with one of several regular expressions contained in regular-grammar. If many rules match, the reader takes the first one defined in the grammar. When the regular rule has been found the corresponding Scheme expression is evaluated.

remark: The traditional read Scheme function is implemented as:

(define-inline (read port)
   (read/rp scheme-grammar port))

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