Fix begin_keywords "1364-2001-noconfig" #28

Author: dalance

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## [Unreleased](https://github.com/dalance/sv-parser/compare/v0.9.0...Unreleased) - ReleaseDate
 
+* [Fixed] begin_keywords "1364-2001-noconfig" failure [#28](https://github.com/dalance/sv-parser/issues/28)
 * [Changed] update nom to 6.0.0
 
 ## [v0.9.0](https://github.com/dalance/sv-parser/compare/v0.8.3...v0.9.0) - 2020-11-11

sv-parser-parser/src/general/compiler_directives.rs

@@ -849,14 +849,14 @@ pub(crate) fn version_specifier(s: Span) -> IResult<Span, VersionSpecifier> {
             begin_keywords("1364-2005");
             x
         }),
-        map(keyword("1364-2001"), |x| {
-            begin_keywords("1364-2001");
-            x
-        }),
         map(keyword("1364-2001-noconfig"), |x| {
             begin_keywords("1364-2001-noconfig");
             x
         }),
+        map(keyword("1364-2001"), |x| {
+            begin_keywords("1364-2001");
+            x
+        }),
         map(keyword("1364-1995"), |x| {
             begin_keywords("1364-1995");
             x

sv-parser-parser/src/tests.rs

@@ -428,6 +428,15 @@ mod unit {
             r##"module a; always begin a = b.c'(0); end endmodule"##,
             Ok((_, _))
         );
+        test!(
+            source_text,
+            r##"`begin_keywords "1364-2001-noconfig" // use IEEE Std 1364-2001 Verilog keywords
+                module m2;
+                  reg [63:0] logic; // OK: "logic" is not a keyword in 1364-2001
+                endmodule
+                `end_keywords"##,
+            Ok((_, _))
+        );
     }
 }