Method GetExpandedArgSize

source/script_expression.cpp:2307–2331

	

VarSizeType Line::GetExpandedArgSize()
// Returns the size, or VARSIZE_ERROR if there was a problem.
// This function can return a size larger than what winds up actually being needed
// (e.g. caused by ScriptGetCursor()), so our callers should be aware that that can happen.
{
	int i;
	VarSizeType space_needed;
	
	// Note: the below loop is similar to the one in ExpandArgs(), so the two should be maintained together:
	for (i = 0, space_needed = 0; i < mArgc; ++i) // FOR EACH ARG:
	{
		ArgStruct &this_arg = mArg[i]; // For performance and convenience.
		
		if (this_arg.is_expression)
		{
			// The length used below is more room than is strictly necessary, but given how little
			// space is typically wasted (and that only while the expression is being evaluated),
			// it doesn't seem worth worrying about it.  See other comments at macro definition.
			space_needed += EXPR_BUF_SIZE(this_arg.length);
		}
		// Since is_expression is false, it must be plain text or a non-dynamic input/output var.
	}

	return space_needed;
}