Use %no-stdlib instead of --no-stdlib option

lib/lrama/command.rb

@@ -19,7 +19,7 @@ def run(argv)
       options.y.close if options.y != STDIN
       begin
         grammar = Lrama::Parser.new(text, options.grammar_file, options.debug).parse
-        unless options.no_stdlib
+        unless grammar.no_stdlib
           stdlib_grammar = Lrama::Parser.new(File.read(STDLIB_FILE_PATH), STDLIB_FILE_PATH, options.debug).parse
           grammar.insert_before_parameterizing_rules(stdlib_grammar.parameterizing_rules)
         end

lib/lrama/grammar.rb

@@ -24,7 +24,7 @@ class Grammar
                   :lex_param, :parse_param, :initial_action,
                   :symbols, :types,
                   :rules, :rule_builders,
-                  :sym_to_rules
+                  :sym_to_rules, :no_stdlib
 
     def initialize(rule_counter)
       @rule_counter = rule_counter
@@ -45,6 +45,7 @@ def initialize(rule_counter)
       @undef_symbol = nil
       @accept_symbol = nil
       @aux = Auxiliary.new
+      @no_stdlib = false
 
       append_special_symbols
     end

lib/lrama/lexer.rb

@@ -29,6 +29,7 @@ class Lexer
       %empty
       %code
       %rule
+      %no-stdlib
     )
 
     def initialize(grammar_file)

lib/lrama/option_parser.rb

@@ -59,7 +59,6 @@ def parse_by_option_parser(argv)
         o.on('-S', '--skeleton=FILE', 'specify the skeleton to use') {|v| @options.skeleton = v }
         o.on('-t', 'reserved, do nothing') { }
         o.on('--debug', 'display debugging outputs of internal parser') {|v| @options.debug = true }
-        o.on('--no-stdlib', 'do not include standard library') {|v| @options.no_stdlib = true }
         o.separator ''
         o.separator 'Output:'
         o.on('-H', '--header=[FILE]', 'also produce a header file named FILE') {|v| @options.header = true; @options.header_file = v }

lib/lrama/options.rb

@@ -5,7 +5,7 @@ class Options
                   :report_file, :outfile,
                   :error_recovery, :grammar_file,
                   :trace_opts, :report_opts, :y,
-                  :debug, :no_stdlib
+                  :debug
 
     def initialize
       @skeleton = "bison/yacc.c"
@@ -18,7 +18,6 @@ def initialize
       @trace_opts = nil
       @report_opts = nil
       @y = STDIN
-      @no_stdlib = false
     end
   end
 end

parser.y

@@ -69,6 +69,7 @@ rule
                        {
                          @grammar.initial_action = Grammar::Code::InitialActionCode.new(type: :initial_action, token_code: val[3])
                        }
+                   | "%no-stdlib" { @grammar.no_stdlib = true }
                    | ";"
 
   grammar_declaration: "%union" "{"

spec/lrama/option_parser_spec.rb

@@ -48,7 +48,6 @@
               -S, --skeleton=FILE              specify the skeleton to use
               -t                               reserved, do nothing
                   --debug                      display debugging outputs of internal parser
-                  --no-stdlib                  do not include standard library
 
           Output:
               -H, --header=[FILE]              also produce a header file named FILE
@@ -198,24 +197,4 @@
       end
     end
   end
-
-  describe "@no_stdlib" do
-    context "--no-stdlib option is not passed" do
-      it "@no_stdlib is false" do
-        option_parser = Lrama::OptionParser.new
-        option_parser.send(:parse, ["-", "test.y"])
-        options = option_parser.instance_variable_get(:@options)
-        expect(options.no_stdlib).to eq false
-      end
-    end
-
-    context "--no-stdlib option is passed" do
-      it "@no_stdlib is true" do
-        option_parser = Lrama::OptionParser.new
-        option_parser.send(:parse, ["--no-stdlib", "-", "test.y"])
-        options = option_parser.instance_variable_get(:@options)
-        expect(options.no_stdlib).to eq true
-      end
-    end
-  end
 end