Merge pull request #14788 from jeasonstudio/grammar-provide-using-ali…

…ases solidity grammar: add a new rule `usingAliases` for `usingDirective`
ethereum · Feb 5, 2024 · 1183284 · 1183284
2 parents 3ed82c6 + a3e5f3f
commit 1183284
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/docs/grammar/SolidityParser.g4 b/docs/grammar/SolidityParser.g4
@@ -337,7 +337,14 @@ userDefinableOperator:
  * Using directive to attach library functions and free functions to types.
  * Can occur within contracts and libraries and at the file level.
  */
-usingDirective: Using (identifierPath | (LBrace identifierPath (As userDefinableOperator)? (Comma identifierPath (As userDefinableOperator)?)* RBrace)) For (Mul | typeName) Global? Semicolon;
+usingDirective:
+  Using (
+    identifierPath
+    | (LBrace usingAliases (Comma usingAliases)* RBrace)
+  ) For (Mul | typeName) Global? Semicolon;
+
+usingAliases: identifierPath (As userDefinableOperator)?;
+
 /**
  * A type name can be an elementary type, a function type, a mapping type, a user-defined type
  * (e.g. a contract or struct) or an array type.