Merge pull request #189 from rubychan/ruby-2.3

New Ruby 2.1, 2.2, 2.3 Syntax

4 files changed, 26 insertions, 7 deletions

diff --git a/Changes.textile b/Changes.textile
index 137460a..3c389ff 100644
--- a/Changes.textile
+++ b/Changes.textile
@@ -5,6 +5,10 @@ p=. _This files lists all changes in the CodeRay library since the 0.9.8 release
 h2. Changes in 1.1.1
 
 * SQL scanner: fix open strings [#163, thanks to Adam]
+* Ruby scanner: Accept number literal suffixes @r@ and @i@ (Ruby 2.1)
+* Ruby scanner: Accept quoted hash keys like @{ "a": boss }@ (Ruby 2.2)
+* Ruby scanner: Accept save navigation operator @&.@ (Ruby 2.3)
+* Ruby scanner: Accept squiggly heredoc @<<~@ (Ruby 2.3)
 
 h2. Changes in 1.1
 
diff --git a/lib/coderay/scanners/ruby.rb b/lib/coderay/scanners/ruby.rb
index 80165ca..5b8de42 100644
--- a/lib/coderay/scanners/ruby.rb
+++ b/lib/coderay/scanners/ruby.rb
@@ -164,15 +164,19 @@ module Scanners
               end
               
             elsif match = scan(/ ' (?:(?>[^'\\]*) ')? | " (?:(?>[^"\\\#]*) ")? /mx)
-              encoder.begin_group :string
               if match.size == 1
+                kind = check(self.class::StringState.simple_key_pattern(match)) ? :key : :string
+                encoder.begin_group kind
                 encoder.text_token match, :delimiter
-                state = self.class::StringState.new :string, match == '"', match  # important for streaming
+                state = self.class::StringState.new kind, match == '"', match  # important for streaming
               else
+                kind = value_expected == true && scan(/:/) ? :key : :string
+                encoder.begin_group kind
                 encoder.text_token match[0,1], :delimiter
                 encoder.text_token match[1..-2], :content if match.size > 2
                 encoder.text_token match[-1,1], :delimiter
-                encoder.end_group :string
+                encoder.end_group kind
+                encoder.text_token ':', :operator if kind == :key
                 value_expected = false
               end
               
@@ -191,11 +195,14 @@ module Scanners
                 encoder.text_token match, :error
                 method_call_expected = false
               else
-                encoder.text_token match, self[1] ? :float : :integer  # TODO: send :hex/:octal/:binary
+                kind = self[1] ? :float : :integer  # TODO: send :hex/:octal/:binary
+                match << 'r' if match !~ /e/i && scan(/r/)
+                match << 'i' if scan(/i/)
+                encoder.text_token match, kind
               end
               value_expected = false
               
-            elsif match = scan(/ [-+!~^\/]=? | [:;] | [*|&]{1,2}=? | >>? /x)
+            elsif match = scan(/ [-+!~^\/]=? | [:;] | &\. | [*|&]{1,2}=? | >>? /x)
               value_expected = true
               encoder.text_token match, :operator
               
@@ -208,7 +215,7 @@ module Scanners
               encoder.end_group kind
               heredocs ||= []  # create heredocs if empty
               heredocs << self.class::StringState.new(kind, quote != "'", delim,
-                self[1] == '-' ? :indented : :linestart)
+                self[1] ? :indented : :linestart)
               value_expected = false
               
             elsif value_expected && match = scan(/#{patterns::FANCY_STRING_START}/o)
diff --git a/lib/coderay/scanners/ruby/patterns.rb b/lib/coderay/scanners/ruby/patterns.rb
index 0b36e13..e5a156d 100644
--- a/lib/coderay/scanners/ruby/patterns.rb
+++ b/lib/coderay/scanners/ruby/patterns.rb
@@ -114,7 +114,7 @@ module Scanners
     # NOTE: This is not completely correct, but
     # nobody needs heredoc delimiters ending with \n.
     HEREDOC_OPEN = /
-      << (-)?              # $1 = float
+      << ([-~])?           # $1 = float
       (?:
         ( [A-Za-z_0-9]+ )  # $2 = delim
       |
diff --git a/lib/coderay/scanners/ruby/string_state.rb b/lib/coderay/scanners/ruby/string_state.rb
index 28ddd6c..95f1e83 100644
--- a/lib/coderay/scanners/ruby/string_state.rb
+++ b/lib/coderay/scanners/ruby/string_state.rb
@@ -37,6 +37,14 @@ module Scanners
         end
       end
       
+      def self.simple_key_pattern delim
+        if delim == "'"
+          / (?> (?: [^\\']+ | \\. )* ) ' : /mx
+        else
+          / (?> (?: [^\\"\#]+ | \\. | \#\$[\\"] | \#\{[^\{\}]+\} | \#(?!\{) )* ) " : /mx
+        end
+      end
+      
       def initialize kind, interpreted, delim, heredoc = false
         if heredoc
           pattern = heredoc_pattern delim, interpreted, heredoc == :indented