Add bin and edit workflow

bin/gems/rouge-4.7.0/lib/rouge/lexers/cython.rb

@@ -0,0 +1,151 @@
+# -*- coding: utf-8 -*- #
+# frozen_string_literal: true
+
+module Rouge
+  module Lexers
+    load_lexer 'python.rb'
+
+    class Cython < Python
+      title "Cython"
+      desc "Cython and Pyrex source code (cython.org)"
+      tag 'cython'
+      aliases 'pyx', 'pyrex'
+      filenames '*.pyx', '*.pxd', '*.pxi'
+      mimetypes 'text/x-cython', 'application/x-cython'
+
+      def initialize(opts = {})
+        super opts
+        @indentation = nil
+      end
+
+      def self.keywords
+        @keywords ||= super + %w(
+          by except? fused gil nogil
+        )
+      end
+
+      def self.c_keywords
+        @ckeywords ||= %w(
+          public readonly extern api inline enum union
+        )
+      end
+
+      identifier = /[a-z_]\w*/i
+      dotted_identifier = /[a-z_.][\w.]*/i
+
+      prepend :root do
+        rule %r/cp?def|ctypedef/ do
+          token Keyword
+          push :c_definitions
+          push :c_start
+        end
+
+        rule %r/(from)((?:\\\s|\s)+)(#{dotted_identifier})((?:\\\s|\s)+)(cimport)/ do
+          groups Keyword::Namespace,
+                 Text,
+                 Name::Namespace,
+                 Text,
+                 Keyword::Namespace
+        end
+
+        rule %r/(cimport)(\s+)(#{dotted_identifier})/ do
+          groups Keyword::Namespace, Text, Name::Namespace
+        end
+
+        rule %r/(struct)((?:\\\s|\s)+)/ do
+          groups Keyword, Text
+          push :classname
+        end
+
+        mixin :func_call_fix
+
+        rule %r/[(,]/, Punctuation, :c_start
+      end
+
+      prepend :classname do
+        rule %r/(?:\\\s|\s)+/, Text
+      end
+
+      prepend :funcname do
+        rule %r/(?:\\\s|\s)+/, Text
+      end
+      # This is a fix for the way that function calls are lexed in the Python
+      # lexer. This should be moved to the Python lexer once confirmed that it
+      # does not cause any regressions.
+      state :func_call_fix do
+        rule %r/#{identifier}(?=\()/ do |m|
+          if self.class.keywords.include? m[0]
+            token Keyword
+          elsif self.class.exceptions.include? m[0]
+            token Name::Builtin
+          elsif self.class.builtins.include? m[0]
+            token Name::Builtin
+          elsif self.class.builtins_pseudo.include? m[0]
+            token Name::Builtin::Pseudo
+          else
+            token Name::Function
+          end
+        end
+      end
+
+      # The Cython lexer adds three states to those already in the Python lexer.
+      # Calls to `cdef`, `cpdef` and `ctypedef` move the lexer into the :c_start
+      # state. The primary purpose of this state is to highlight datatypes. Once
+      # this has been done, the lexer moves to the :c_definitions state where
+      # the majority of text in a definition is lexed. Finally, newlines cause
+      # the lexer to move to :c_indent. This state is used to check whether we
+      # have moved out of a C block.
+
+      state :c_start do
+        rule %r/[^\S\n]+/, Text
+
+        rule %r/cp?def|ctypedef/, Keyword
+
+        rule %r/(?:un)?signed/, Keyword::Type
+
+        # This rule matches identifiers that could be type declarations. The
+        # lookahead matches (1) pointers, (2) arrays and (3) variable names.
+        rule %r/#{identifier}(?=(?:\*+)|(?:[ \t]*\[)|(?:[ \t]+\w))/ do |m|
+          if self.class.keywords.include? m[0]
+            token Keyword
+            pop!
+          elsif %w(def).include? m[0]
+            token Keyword
+            goto :funcname
+          elsif %w(struct class).include? m[0]
+            token Keyword::Reserved
+            goto :classname
+          elsif self.class.c_keywords.include? m[0]
+            token Keyword::Reserved
+          else
+            token Keyword::Type
+            pop!
+          end
+        end
+
+        rule(//) { pop! }
+      end
+
+      state :c_definitions do
+        rule %r/\n/, Text, :c_indent
+        mixin :root
+      end
+
+      state :c_indent do
+        rule %r/[ \t]+/ do |m|
+          token Text
+          goto :c_start
+
+          if @indentation.nil?
+            @indentation = m[0]
+          elsif @indentation.length > m[0].length
+            @indentation = nil
+            pop! 2 # Pop :c_start and :c_definitions
+          end
+        end
+
+        rule(//) { @indentation = nil; reset_stack }
+      end
+    end
+  end
+end