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| author | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-16 18:49:26 +0900 |
|---|---|---|
| committer | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-30 00:39:06 +0900 |
| commit | fcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch) | |
| tree | 64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/sample/exyacc.rb | |
Fresh start
Diffstat (limited to 'jni/ruby/sample/exyacc.rb')
| -rw-r--r-- | jni/ruby/sample/exyacc.rb | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/jni/ruby/sample/exyacc.rb b/jni/ruby/sample/exyacc.rb new file mode 100644 index 0000000..7b37a8b --- /dev/null +++ b/jni/ruby/sample/exyacc.rb @@ -0,0 +1,20 @@ +#! /usr/local/bin/ruby -Kn +# usage: exyacc.rb [yaccfiles] +# this is coverted from exyacc.pl in the camel book + +ARGF.each(nil) do |source| + sbeg = source.index("\n%%") + 1 + send = source.rindex("\n%%") + 1 + grammar = source[sbeg, send-sbeg] + grammar.sub!(/.*\n/, "") + grammar.gsub!(/'\{'/, "'\001'") + grammar.gsub!(/'\}'/, "'\002'") + grammar.gsub!(%r{\*/}, "\003\003") + grammar.gsub!(%r{/\*[^\003]*\003\003}, '') + while grammar.gsub!(/\{[^{}]*\}/, ''); end + grammar.gsub!(/'\001'/, "'{'") + grammar.gsub!(/'\002'/, "'}'") + while grammar.gsub!(/^[ \t]*\n(\s)/, '\1'); end + grammar.gsub!(/([:|])[ \t\n]+(\w)/, '\1 \2') + print grammar +end |