tuple

src/ast/expressions.hpp

@@ -190,4 +190,24 @@ struct Dict : Expr
         }
         return oss.str();
     }
+};
+
+struct Tuple : Expr
+{
+    std::vector<ptr<Expr>> elements;
+
+    Tuple(std::vector<ptr<Expr>> elems)
+        : elements(std::move(elems)) {}
+
+    std::string dump(int indent = 0) const override
+    {
+        std::ostringstream oss;
+        oss << indent_str(indent) << "Tuple";
+        for (const auto &elem : elements)
+        {
+            oss << "\n"
+                << elem->dump(indent + 1);
+        }
+        return oss.str();
+    }
 };

src/parser.y

@@ -57,6 +57,7 @@
 %type <std::unique_ptr<Slice>> slice
 %type <std::unique_ptr<Stmt>> stmt
 %type <std::vector<std::unique_ptr<Expr>>> args
+%type <std::vector<std::unique_ptr<Expr>>> tuple
 %type <std::vector<std::unique_ptr<Stmt>>> stmt_list
 %type <std::vector<std::string>> params
 
@@ -110,6 +111,7 @@ expr:
     | expr L_PAREN args R_PAREN { $$ = std::make_unique<Call>(std::move($1), std::move($3));}
     | expr DOT IDENTIFIER { $$ = std::make_unique<Attribute>(std::move($1), $3);}
     | L_BRACKET args R_BRACKET { $$ = std::make_unique<List>(std::move($2));}
+    | L_PAREN tuple R_PAREN { $$ = std::make_unique<Tuple>(std::move($2));}
     | MINUS expr { $$ = std::make_unique<UnaryOpExpr>(UnaryOperator(UnaryOperator::NEG), std::move($2));}
     ;
 
@@ -131,6 +133,11 @@ args:
     | args COMMA expr     { $1.push_back(std::move($3)); $$ = std::move($1); }
     ;
 
+tuple:
+      expr                { $$ = std::vector<std::unique_ptr<Expr>>();
+                            $$.push_back(std::move($1)); }
+    | tuple COMMA expr    { $1.push_back(std::move($3)); $$ = std::move($1); }
+
 params:
                           { $$ = std::vector<std::string>();}
     | IDENTIFIER          { $$ = std::vector<std::string>(); $$.push_back($1); }