diff options
author | mame <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2010-03-09 03:21:07 +0000 |
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committer | mame <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2010-03-09 03:21:07 +0000 |
commit | 4400822b45c209a719f2a075fb9bda3bdf787ad9 (patch) | |
tree | 9344add74e5b0679b58d04c0d8ba16fa3c391dda /tool/transcode-tblgen.rb | |
parent | 6951f8f99a7561563b44f8420564d7fc2f24bdb5 (diff) |
* tool/transcode-tblgen.rb (StrSet#parse, ActionMap#generate_node):
optimization (reusing object and improving memoize).
[ruby-dev:40582]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26852 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'tool/transcode-tblgen.rb')
-rwxr-xr-x | tool/transcode-tblgen.rb | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tool/transcode-tblgen.rb b/tool/transcode-tblgen.rb index f8da86d8c9..4895c101e0 100755 --- a/tool/transcode-tblgen.rb +++ b/tool/transcode-tblgen.rb @@ -23,6 +23,8 @@ HEX2 = /[0-9A-Fa-f]{2}/ class StrSet attr_reader :pat + SINGLE_BYTE_RANGES = (0..255).map {|i| [i..i] } + def self.parse(pattern) if /\A\s*((#{HEX2}|\{(#{HEX2}|#{HEX2}-#{HEX2})(,(#{HEX2}|#{HEX2}-#{HEX2}))*\})+(\s+|\z))*\z/o !~ pattern raise ArgumentError, "invalid pattern: #{pattern.inspect}" @@ -33,7 +35,7 @@ class StrSet while !seq.empty? if /\A(#{HEX2})/o =~ seq byte = $1.to_i(16) - seq_result << [byte..byte] + seq_result << SINGLE_BYTE_RANGES[byte] seq = $' elsif /\A\{([^\}]+)\}/ =~ seq set = $1 @@ -448,7 +450,7 @@ End } if n = PostMemo[table] - return n + return PreMemo[[self,valid_encoding]] = n end if !name_hint |