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LibJS: Implement modulo assignment operator (%=)
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4 changed files with 18 additions and 0 deletions
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@ -850,6 +850,12 @@ Value AssignmentExpression::execute(Interpreter& interpreter) const
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return {};
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return {};
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rhs_result = div(interpreter, lhs_result, rhs_result);
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rhs_result = div(interpreter, lhs_result, rhs_result);
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break;
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break;
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case AssignmentOp::ModuloAssignment:
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lhs_result = m_lhs->execute(interpreter);
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if (interpreter.exception())
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return {};
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rhs_result = mod(interpreter, lhs_result, rhs_result);
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break;
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case AssignmentOp::ExponentiationAssignment:
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case AssignmentOp::ExponentiationAssignment:
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lhs_result = m_lhs->execute(interpreter);
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lhs_result = m_lhs->execute(interpreter);
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if (interpreter.exception())
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if (interpreter.exception())
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@ -960,6 +966,9 @@ void AssignmentExpression::dump(int indent) const
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case AssignmentOp::DivisionAssignment:
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case AssignmentOp::DivisionAssignment:
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op_string = "/=";
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op_string = "/=";
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break;
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break;
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case AssignmentOp::ModuloAssignment:
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op_string = "%=";
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break;
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case AssignmentOp::ExponentiationAssignment:
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case AssignmentOp::ExponentiationAssignment:
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op_string = "**=";
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op_string = "**=";
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break;
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break;
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@ -604,6 +604,7 @@ enum class AssignmentOp {
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SubtractionAssignment,
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SubtractionAssignment,
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MultiplicationAssignment,
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MultiplicationAssignment,
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DivisionAssignment,
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DivisionAssignment,
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ModuloAssignment,
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ExponentiationAssignment,
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ExponentiationAssignment,
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BitwiseAndAssignment,
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BitwiseAndAssignment,
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BitwiseOrAssignment,
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BitwiseOrAssignment,
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@ -634,6 +634,9 @@ NonnullRefPtr<Expression> Parser::parse_secondary_expression(NonnullRefPtr<Expre
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case TokenType::Percent:
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case TokenType::Percent:
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consume();
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consume();
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return create_ast_node<BinaryExpression>(BinaryOp::Modulo, move(lhs), parse_expression(min_precedence, associativity));
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return create_ast_node<BinaryExpression>(BinaryOp::Modulo, move(lhs), parse_expression(min_precedence, associativity));
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case TokenType::PercentEquals:
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consume();
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return create_ast_node<AssignmentExpression>(AssignmentOp::ModuloAssignment, move(lhs), parse_expression(min_precedence, associativity));
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case TokenType::DoubleAsterisk:
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case TokenType::DoubleAsterisk:
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consume();
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consume();
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return create_ast_node<BinaryExpression>(BinaryOp::Exponentiation, move(lhs), parse_expression(min_precedence, associativity));
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return create_ast_node<BinaryExpression>(BinaryOp::Exponentiation, move(lhs), parse_expression(min_precedence, associativity));
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@ -1194,6 +1197,7 @@ bool Parser::match_secondary_expression() const
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|| type == TokenType::Slash
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|| type == TokenType::Slash
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|| type == TokenType::SlashEquals
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|| type == TokenType::SlashEquals
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|| type == TokenType::Percent
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|| type == TokenType::Percent
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|| type == TokenType::PercentEquals
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|| type == TokenType::DoubleAsterisk
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|| type == TokenType::DoubleAsterisk
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|| type == TokenType::DoubleAsteriskEquals
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|| type == TokenType::DoubleAsteriskEquals
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|| type == TokenType::Equals
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|| type == TokenType::Equals
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@ -23,6 +23,10 @@ try {
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assert((x /= 2) === 3);
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assert((x /= 2) === 3);
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assert(x === 3);
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assert(x === 3);
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x = 6;
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assert((x %= 4) === 2);
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assert(x === 2);
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x = 2;
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x = 2;
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assert((x **= 3) === 8);
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assert((x **= 3) === 8);
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assert(x === 8);
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assert(x === 8);
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