add else if to the if

Ferenc Szontágh

2025-04-18 17b3739f756a1e713704b22cce89307308cea2d8

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 #ifndef INTERPRETER_FOR_STATEMENT_NODE_HPP
 #define INTERPRETER_FOR_STATEMENT_NODE_HPP
 
 #include <vector>
 #include <memory>
 #include <string>
 #include <stdexcept>
 #include "Interpreter/StatementNode.hpp"
 #include "Interpreter/ExpressionNode.hpp"
 #include "Symbols/Value.hpp"
 #include "Symbols/SymbolContainer.hpp"
 #include "Symbols/SymbolFactory.hpp"
 
 namespace Interpreter {
 
 /**
  * @brief Statement node representing a for-in loop over object members.
  */
 class ForStatementNode : public StatementNode {
   private:
    Symbols::Variables::Type keyType_;
    std::string keyName_;
    std::string valueName_;
    std::unique_ptr<ExpressionNode> iterableExpr_;
    std::vector<std::unique_ptr<StatementNode>> body_;
 
   public:
    ForStatementNode(Symbols::Variables::Type keyType,
                     std::string keyName,
                     std::string valueName,
                     std::unique_ptr<ExpressionNode> iterableExpr,
                     std::vector<std::unique_ptr<StatementNode>> body,
                     const std::string & file_name,
                     int line,
                     size_t column)
      : StatementNode(file_name, line, column),
        keyType_(keyType),
        keyName_(std::move(keyName)),
        valueName_(std::move(valueName)),
        iterableExpr_(std::move(iterableExpr)),
        body_(std::move(body)) {}
 
    void interpret(Interpreter & interpreter) const override {
        using namespace Symbols;
        // Evaluate iterable expression
        auto iterableVal = iterableExpr_->evaluate(interpreter);
        if (iterableVal.getType() != Variables::Type::OBJECT) {
            throw std::runtime_error("For-in loop applied to non-object at " + filename_ + ":" + std::to_string(line_) +
                                     "," + std::to_string(column_));
        }
        // Access underlying object map
        const auto & objMap = std::get<Value::ObjectMap>(iterableVal.get());
        auto * symContainer = SymbolContainer::instance();
        const std::string base_ns = symContainer->currentScopeName();
        const std::string var_ns  = base_ns + ".variables";
        // Iterate through object entries
        for (const auto & entry : objMap) {
            // Key binding
            const std::string & key = entry.first;
            Value keyVal(key);
            if (!symContainer->exists(keyName_, var_ns)) {
                auto sym = SymbolFactory::createVariable(keyName_, keyVal, base_ns);
                symContainer->add(sym);
            } else {
                auto sym = symContainer->get(var_ns, keyName_);
                sym->setValue(keyVal);
            }
            // Value binding
            Value valVal = entry.second;
            if (!symContainer->exists(valueName_, var_ns)) {
                auto sym = SymbolFactory::createVariable(valueName_, valVal, base_ns);
                symContainer->add(sym);
            } else {
                auto sym = symContainer->get(var_ns, valueName_);
                sym->setValue(valVal);
            }
            // Execute loop body
            for (const auto & stmt : body_) {
                stmt->interpret(interpreter);
            }
        }
    }
 
    std::string toString() const override {
        return "ForStatementNode at " + filename_ + ":" + std::to_string(line_);
    }
 };
 
} // namespace Interpreter
 
#endif // INTERPRETER_FOR_STATEMENT_NODE_HPP