operator assigments

Ferenc Szontágh

2025-04-19 c8f8dbada301cd66d8c40cd0bd8ea0e8ae669644

operator assigments

 src/Parser/Parser.cpp

@@ -289,7 +289,8 @@
            offset += 2;  // skip '->' and following identifier
        }
        const auto & look = peekToken(offset);
        if (look.type == Lexer::Tokens::Type::OPERATOR_ASSIGNMENT && look.value == "=") {
        // Handle simple and compound assignment operators (e.g., =, +=, -=, etc.)
        if (look.type == Lexer::Tokens::Type::OPERATOR_ASSIGNMENT) {
            // Consume base variable
            auto        idTok    = expect(Lexer::Tokens::Type::VARIABLE_IDENTIFIER);
            std::string baseName = idTok.value;
@@ -313,16 +314,29 @@
                }
                propertyPath.push_back(propName);
            }
            // Consume '='
            auto eqTok   = expect(Lexer::Tokens::Type::OPERATOR_ASSIGNMENT, "=");
            // Consume assignment operator ("=" or compound like "+=")
            auto opTok   = expect(Lexer::Tokens::Type::OPERATOR_ASSIGNMENT);
            // Parse RHS expression
            auto rhsExpr = parseParsedExpression(Symbols::Variables::Type::NULL_TYPE);
            expect(Lexer::Tokens::Type::PUNCTUATION, ";");
            // Build RHS node
            auto rhsNode = buildExpressionFromParsed(rhsExpr);
            // Compound assignment: a OP= b -> a = a OP b
            if (opTok.value != "=") {
                // Build LHS expression for current value
                std::unique_ptr<Interpreter::ExpressionNode> lhsNode =
                    std::make_unique<Interpreter::IdentifierExpressionNode>(baseName);
                for (const auto & prop : propertyPath) {
                    lhsNode = std::make_unique<Interpreter::MemberExpressionNode>(std::move(lhsNode), prop);
                }
                // Extract binary operator ("+=" -> "+")
                std::string binOp = opTok.value.substr(0, opTok.value.size() - 1);
                // Build binary expression lhs OP rhs
                rhsNode = std::make_unique<Interpreter::BinaryExpressionNode>(std::move(lhsNode), binOp, std::move(rhsNode));
            }
            return std::make_unique<Interpreter::AssignmentStatementNode>(baseName, std::move(propertyPath),
                                                                          std::move(rhsNode), this->current_filename_,
                                                                          eqTok.line_number, eqTok.column_number);
                                                                          opTok.line_number, opTok.column_number);
        }
    }
    // Function call statement
@@ -1020,7 +1034,8 @@
            offset += 2;
        }
        const auto & look = peekToken(offset);
        if (look.type == Lexer::Tokens::Type::OPERATOR_ASSIGNMENT && look.value == "=") {
        // Simple or compound assignment (e.g., =, +=, -=, etc.)
        if (look.type == Lexer::Tokens::Type::OPERATOR_ASSIGNMENT) {
            parseAssignmentStatement();
            return;
        }

 test_scripts/operator_assigments.vs

New file
@@ -0,0 +1,10 @@
int $i = 0;
$i += 10;
$i -= 1;
$i /= 1;
printnl($i);


int $x = 5;
$x %= 2;
printnl($x);