issue #171. Making script option to output repr.

src/fparser/scripts/fparser2.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# Modified work Copyright (c) 2017-2018 Science and Technology
+# Modified work Copyright (c) 2017-2019 Science and Technology
 # Facilities Council
 # Original work Copyright (c) 1999-2008 Pearu Peterson
 
@@ -93,7 +93,6 @@ def runner(_, options, args):
         try:
             f2003_parser = ParserFactory().create()
             program = f2003_parser(reader)
-            print (program)
         except FortranSyntaxError as msg:
             print ("Syntax error: {0}".format(str(msg)))
             try:
@@ -108,6 +107,17 @@ def runner(_, options, args):
             print ("Internal error in fparser: {0}".format(str(msg)))
             raise SystemExit(1)
 
+        if options.task == 'repr':
+            print (repr(program))
+        elif options.task == 'show':
+            print (program)
+        elif options.task == 'none':
+            pass
+        else:
+            print ("Internal error in fparser2.py: task command line "
+                   "option '{0}' is not supported.".format(options.task))
+            raise SystemExit(1)
+
 
 def main():
     ''' Check arguments before parsing code '''

src/fparser/scripts/script_options.py

@@ -100,7 +100,7 @@ def set_fparser_options(parser):
   %prog parses Fortran code.''')
     parser.add_option('--task',
                       default = 'show',
-                      choices = ['show', 'none'],
+                      choices = ['show', 'repr', 'none'],
                       help = 'Specify parsing result task. Default: %default.'
                       )
     parser.add_option('--std',