comparison vendor/gems/coderay-0.9.7/test/functional/.svn/text-base/vhdl.rb.svn-base @ 210:0579821a129a

Update to Redmine trunk rev 4802

+class VHDL < CodeRay::Scanners::Scanner
+
+  register_for :vhdl
+
+  RESERVED_WORDS = [
+    'access','after','alias','all','assert','architecture','begin',
+    'block','body','buffer','bus','case','component','configuration','constant',
+    'disconnect','downto','else','elsif','end','entity','exit','file','for',
+    'function','generate','generic','group','guarded','if','impure','in',
+    'inertial','inout','is','label','library','linkage','literal','loop',
+    'map','new','next','null','of','on','open','others','out','package',
+    'port','postponed','procedure','process','pure','range','record','register',
+    'reject','report','return','select','severity','signal','shared','subtype',
+    'then','to','transport','type','unaffected','units','until','use','variable',
+    'wait','when','while','with','note','warning','error','failure','and',
+    'or','xor','not','nor',
+    'array'
+  ]
+
+  PREDEFINED_TYPES = [
+    'bit','bit_vector','character','boolean','integer','real','time','string',
+    'severity_level','positive','natural','signed','unsigned','line','text',
+    'std_logic','std_logic_vector','std_ulogic','std_ulogic_vector','qsim_state',
+    'qsim_state_vector','qsim_12state','qsim_12state_vector','qsim_strength',
+    'mux_bit','mux_vector','reg_bit','reg_vector','wor_bit','wor_vector'
+  ]
+
+  PREDEFINED_CONSTANTS = [
+
+  ]
+
+  IDENT_KIND = CodeRay::CaseIgnoringWordList.new(:ident).
+    add(RESERVED_WORDS, :reserved).
+    add(PREDEFINED_TYPES, :pre_type).
+    add(PREDEFINED_CONSTANTS, :pre_constant)
+
+  ESCAPE = / [rbfntv\n\\'"] | x[a-fA-F0-9]{1,2} | [0-7]{1,3} /x
+  UNICODE_ESCAPE =  / u[a-fA-F0-9]{4} | U[a-fA-F0-9]{8} /x
+
+  def scan_tokens tokens, options
+
+    state = :initial
+
+    until eos?
+
+      kind = nil
+      match = nil
+
+      case state
+
+      when :initial
+
+        if scan(/ \s+ | \\\n /x)
+          kind = :space
+
+        elsif scan(/-- .*/x)
+          kind = :comment
+
+        elsif scan(/ [-+*\/=<>?:;,!&^|()\[\]{}~%]+ | \.(?!\d) /x)
+          kind = :operator
+
+        elsif match = scan(/ [A-Za-z_][A-Za-z_0-9]* /x)
+          kind = IDENT_KIND[match.downcase]
+
+        elsif match = scan(/[a-z]?"/i)
+          tokens << [:open, :string]
+          state = :string
+          kind = :delimiter
+
+        elsif scan(/ L?' (?: [^\'\n\\] | \\ #{ESCAPE} )? '? /ox)
+          kind = :char
+
+        elsif scan(/(?:\d+)(?![.eEfF])/)
+          kind = :integer
+
+        elsif scan(/\d[fF]?|\d*\.\d+(?:[eE][+-]?\d+)?[fF]?|\d+[eE][+-]?\d+[fF]?/)
+          kind = :float
+
+        else
+          getch
+          kind = :error
+
+        end
+
+      when :string
+        if scan(/[^\\\n"]+/)
+          kind = :content
+        elsif scan(/"/)
+          tokens << ['"', :delimiter]
+          tokens << [:close, :string]
+          state = :initial
+          next
+        elsif scan(/ \\ (?: #{ESCAPE} | #{UNICODE_ESCAPE} ) /mox)
+          kind = :char
+        elsif scan(/ \\ | $ /x)
+          tokens << [:close, :string]
+          kind = :error
+          state = :initial
+        else
+          raise_inspect "else case \" reached; %p not handled." % peek(1), tokens
+        end
+
+      else
+        raise_inspect 'Unknown state', tokens
+
+      end
+
+      match ||= matched
+      if $DEBUG and not kind
+        raise_inspect 'Error token %p in line %d' %
+          [[match, kind], line], tokens
+      end
+      raise_inspect 'Empty token', tokens unless match
+
+      tokens << [match, kind]
+
+    end
+
+    if state == :string
+      tokens << [:close, :string]
+    end
+
+    tokens
+  end
+
+end