Function _AR_EXP_Evaluate

src/arithmetic/arithmetic_expression.c:592–624

evaluate an expression tree, placing the calculated value in 'result' and returning whether an error occurred during evaluation

// placing the calculated value in 'result'
// and returning whether an error occurred during evaluation
static AR_EXP_Result _AR_EXP_Evaluate
(
	AR_ExpNode *root,
	const Record r,
	SIValue *result
) {
	AR_EXP_Result res = EVAL_OK;

	switch(root->type) {
	case AR_EXP_OP:
		return _AR_EXP_EvaluateFunctionCall(root, r, result);
	case AR_EXP_OPERAND:
		switch(root->operand.type) {
		case AR_EXP_CONSTANT:
			// the value is constant or has been computed elsewhere
			// share with caller
			*result = SI_ShareValue(root->operand.constant);
			return res;
		case AR_EXP_VARIADIC:
			return _AR_EXP_EvaluateVariadic(root, r, result);
		case AR_EXP_PARAM:
			return _AR_EXP_EvaluateParam(root, result);
		case AR_EXP_BORROW_RECORD:
			return _AR_EXP_EvaluateBorrowRecord(root, r, result);
		default:
			ASSERT(false && "Invalid expression type");
		}
	default:
		ASSERT(false && "Unknown expression type");
	}

	return res;
}

SIValue AR_EXP_Evaluate_NoThrow(AR_ExpNode *root, const Record r) {
	SIValue result;