comparison vendor/plugins/coderay-0.9.2/lib/coderay/scanners/delphi.rb @ 0:513646585e45

* Import Redmine trunk SVN rev 3859

+module CodeRay
+module Scanners
+  
+  class Delphi < Scanner
+
+    register_for :delphi
+    file_extension 'pas'
+    
+    RESERVED_WORDS = [
+      'and', 'array', 'as', 'at', 'asm', 'at', 'begin', 'case', 'class',
+      'const', 'constructor', 'destructor', 'dispinterface', 'div', 'do',
+      'downto', 'else', 'end', 'except', 'exports', 'file', 'finalization',
+      'finally', 'for', 'function', 'goto', 'if', 'implementation', 'in',
+      'inherited', 'initialization', 'inline', 'interface', 'is', 'label',
+      'library', 'mod', 'nil', 'not', 'object', 'of', 'or', 'out', 'packed',
+      'procedure', 'program', 'property', 'raise', 'record', 'repeat',
+      'resourcestring', 'set', 'shl', 'shr', 'string', 'then', 'threadvar',
+      'to', 'try', 'type', 'unit', 'until', 'uses', 'var', 'while', 'with',
+      'xor', 'on'
+    ]
+
+    DIRECTIVES = [
+      'absolute', 'abstract', 'assembler', 'at', 'automated', 'cdecl',
+      'contains', 'deprecated', 'dispid', 'dynamic', 'export',
+      'external', 'far', 'forward', 'implements', 'local', 
+      'near', 'nodefault', 'on', 'overload', 'override',
+      'package', 'pascal', 'platform', 'private', 'protected', 'public',
+      'published', 'read', 'readonly', 'register', 'reintroduce',
+      'requires', 'resident', 'safecall', 'stdcall', 'stored', 'varargs',
+      'virtual', 'write', 'writeonly'
+    ]
+
+    IDENT_KIND = CaseIgnoringWordList.new(:ident).
+      add(RESERVED_WORDS, :reserved).
+      add(DIRECTIVES, :directive)
+    
+    NAME_FOLLOWS = CaseIgnoringWordList.new(false).
+      add(%w(procedure function .))
+
+  private
+    def scan_tokens tokens, options
+
+      state = :initial
+      last_token = ''
+
+      until eos?
+
+        kind = nil
+        match = nil
+
+        if state == :initial
+          
+          if scan(/ \s+ /x)
+            tokens << [matched, :space]
+            next
+            
+          elsif scan(%r! \{ \$ [^}]* \}? | \(\* \$ (?: .*? \*\) | .* ) !mx)
+            tokens << [matched, :preprocessor]
+            next
+            
+          elsif scan(%r! // [^\n]* | \{ [^}]* \}? | \(\* (?: .*? \*\) | .* ) !mx)
+            tokens << [matched, :comment]
+            next
+            
+          elsif match = scan(/ <[>=]? | >=? | :=? | [-+=*\/;,@\^|\(\)\[\]] | \.\. /x)
+            kind = :operator
+          
+          elsif match = scan(/\./)
+            kind = :operator
+            if last_token == 'end'
+              tokens << [match, kind]
+              next
+            end
+            
+          elsif match = scan(/ [A-Za-z_][A-Za-z_0-9]* /x)
+            kind = NAME_FOLLOWS[last_token] ? :ident : IDENT_KIND[match]
+            
+          elsif match = scan(/ ' ( [^\n']|'' ) (?:'|$) /x)
+            tokens << [:open, :char]
+            tokens << ["'", :delimiter]
+            tokens << [self[1], :content]
+            tokens << ["'", :delimiter]
+            tokens << [:close, :char]
+            next
+            
+          elsif match = scan(/ ' /x)
+            tokens << [:open, :string]
+            state = :string
+            kind = :delimiter
+            
+          elsif scan(/ \# (?: \d+ | \$[0-9A-Fa-f]+ ) /x)
+            kind = :char
+            
+          elsif scan(/ \$ [0-9A-Fa-f]+ /x)
+            kind = :hex
+            
+          elsif scan(/ (?: \d+ ) (?![eE]|\.[^.]) /x)
+            kind = :integer
+            
+          elsif scan(/ \d+ (?: \.\d+ (?: [eE][+-]? \d+ )? | [eE][+-]? \d+ ) /x)
+            kind = :float
+
+          else
+            kind = :error
+            getch
+
+          end
+          
+        elsif state == :string
+          if scan(/[^\n']+/)
+            kind = :content
+          elsif scan(/''/)
+            kind = :char
+          elsif scan(/'/)
+            tokens << ["'", :delimiter]
+            tokens << [:close, :string]
+            state = :initial
+            next
+          elsif scan(/\n/)
+            tokens << [:close, :string]
+            kind = :error
+            state = :initial
+          else
+            raise "else case \' reached; %p not handled." % peek(1), tokens
+          end
+          
+        else
+          raise 'else-case reached', tokens
+          
+        end
+        
+        match ||= matched
+        if $CODERAY_DEBUG and not kind
+          raise_inspect 'Error token %p in line %d' %
+            [[match, kind], line], tokens, state
+        end
+        raise_inspect 'Empty token', tokens unless match
+
+        last_token = match
+        tokens << [match, kind]
+        
+      end
+      
+      tokens
+    end
+
+  end
+
+end
+end