Added 'lexer' file test

lexer/lexer.py

@@ -0,0 +1,22 @@
+# (c) 2018 Jan Lerking
+# Python lexer for c header files.
+# Used for creating corresponding NASM include files.
+
+import keywords
+import os
+
+keywords.init()
+
+lexed_line = []
+
+def lex_line(l):
+    prep = keywords.preprocessor_directives
+    reg = keywords.regular
+    for w in l:
+        if w in prep:
+            lexed_line.append(prep(w))
+            lexed_line.append(w)
+            break
+        if w in reg:
+            lexed_line.append(reg(w))
+            lexed_line.append(w)