added parsing of function call

src/ast/expressions/function.cpp

@@ -32,4 +32,35 @@ namespace ast {
         if (body != nullptr)
             delete body;
     }
+
+    // ---------------------------- FUNCTION CALL ----------------------------
+    function_call::function_call(token::token token, expression* target)
+        : token(std::move(token)),
+          target(target) {};
+
+    std::string function_call::token_literal() const {
+        return token.literal;
+    };
+
+    std::string function_call::str() const {
+        std::stringstream ss;
+        ss << target->str() << "(";
+        bool first = true;
+        for (auto& param : parameters) {
+            if (!first)
+                ss << ", ";
+            ss << param->str();
+            first = false;
+        }
+        ss << ")";
+        return ss.str();
+    };
+
+    function_call::~function_call() {
+        if (target != nullptr)
+            delete target;
+        for (auto& param : parameters)
+            delete param;
+    }
+
 } // namespace ast

src/ast/expressions/function.hpp

@@ -18,4 +18,15 @@ namespace ast {
         std::string str() const override;
         ~function_literal();
     };
+
+    struct function_call : expression {
+        function_call(token::token, expression*);
+        token::token token;
+        expression* target;
+        std::vector<expression*> parameters;
+
+        std::string token_literal() const override;
+        std::string str() const override;
+        ~function_call();
+    };
 } // namespace ast