Add regex, match and not match token to the lexer

The lexer recognizes regex delimited by / as in:
/^$/

The match operator is defined by =~
The not match operator is defined by !~

Signed-off-by: Brice Figureau <brice-puppet@daysofwonder.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/puppet/parser/lexer.rb b/lib/puppet/parser/lexer.rb
index 5bab6d65d..56863a2fc 100644
--- a/lib/puppet/parser/lexer.rb
+++ b/lib/puppet/parser/lexer.rb
@@ -134,6 +134,8 @@ class Puppet::Parser::Lexer
         '*' => :TIMES,
         '<<' => :LSHIFT,
         '>>' => :RSHIFT,
+        '=~' => :MATCH,
+        '!~' => :NOMATCH,
         %r{([a-z][-\w]*)?(::[a-z][-\w]*)+} => :CLASSNAME, # Require '::' in the class name, else we'd compete with NAME
         %r{((::){0,1}[A-Z][-\w]*)+} => :CLASSREF
     )
@@ -169,6 +171,11 @@ class Puppet::Parser::Lexer
         [self,value]
     end
 
+    TOKENS.add_token :REGEX, %r{/(.*?)/} do |lexer, value|
+        value.sub!(/^\/(.*?)\/$/,"\\1")
+        [self, Regexp.new(value)]
+    end
+
     TOKENS.add_token :RETURN, "\n", :skip => true, :incr_line => true, :skip_text => true
 
     TOKENS.add_token :SQUOTE, "'" do |lexer, value|