Catch-handle expression AST source file implementation.

src/ast/expression/CatchHandleExpression.cpp

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2024 - Nathanne Isip
+ * This file is part of Zhivo.
+ * 
+ * Zhivo is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 3 of the License,
+ * or (at your option) any later version.
+ * 
+ * Zhivo is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with Zhivo. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <ast/expression/CatchHandleExpression.hpp>
+#include <core/SymbolTable.hpp>
+
+DynamicObject CatchHandleExpression::visit(SymbolTable& symbols) {
+    DynamicObject object = {};
+    try {
+        object = this->catchBlock->visit(symbols);
+    }
+    catch(const TerminativeThrowSignal& throwSig) {
+        std::string handleName = this->handler->getImage();
+        if(symbols.hasSymbol(handleName))
+            throw std::runtime_error("Handle name for catch-handle is already in-use.");
+
+        symbols.setSymbol(handleName, throwSig.getObject());
+        object = this->handleBlock->visit(symbols);
+    }
+
+    if(this->finalBlock)
+        this->finalBlock->visit(symbols);
+
+    return object;
+}