Current File : //proc/3/root/usr/share/doc/re2c-0.14.3/lessons/002_strip_comments/readme.txt
re2c lesson 002_strip_comments, (c) M. Boerger 2006
In this lesson you will learn how to use multiple scanner blocks and how to
read the input from a file instead of a zero terminated string. In the end you
will have a scanner that filters comments out of c source files but keeps re2c
comments.
The first scanner can be generated with:
re2c -s -o t.c strip_001.s.re
In the second step we will learn about YYMARKER that stores backtracking
information.
re2c -s -0 t.c strip_002.b.re
The third step brings trailing contexts that are stored in YYCTXMARKER. We also
change to use -b instead of -s option since the scanner gets more and more
complex.
re2c -b -0 t.c strip_002.b.re
Mini Shell