static void deparseFuncCall()

in ext/pg_query/pg_query_deparse.c [2294:2377]
69 lines of code
19 McCabe index (conditional complexity)

static void deparseFuncCall(StringInfo str, FuncCall *func_call)
{
	const ListCell *lc = NULL;

	Assert(list_length(func_call->funcname) > 0);

	if (list_length(func_call->funcname) == 2 &&
		strcmp(strVal(linitial(func_call->funcname)), "pg_catalog") == 0 &&
		strcmp(strVal(lsecond(func_call->funcname)), "overlay") == 0 &&
		list_length(func_call->args) == 4)
	{
		/*
		 * Note that this is a bit odd, but "OVERLAY" is a keyword on its own merit, and only accepts the
		 * keyword parameter style when its called as a keyword, not as a regular function (i.e. pg_catalog.overlay)
		 */
		appendStringInfoString(str, "OVERLAY(");
		deparseExpr(str, linitial(func_call->args));
		appendStringInfoString(str, " PLACING ");
		deparseExpr(str, lsecond(func_call->args));
		appendStringInfoString(str, " FROM ");
		deparseExpr(str, lthird(func_call->args));
		appendStringInfoString(str, " FOR ");
		deparseExpr(str, lfourth(func_call->args));
		appendStringInfoChar(str, ')');
		return;
	}

	deparseFuncName(str, func_call->funcname);
	appendStringInfoChar(str, '(');

	if (func_call->agg_distinct)
		appendStringInfoString(str, "DISTINCT ");

	if (func_call->agg_star)
	{
		appendStringInfoChar(str, '*');
	}
	else if (list_length(func_call->args) > 0)
	{
		foreach(lc, func_call->args)
		{
			if (func_call->func_variadic && !lnext(func_call->args, lc))
				appendStringInfoString(str, "VARIADIC ");
			deparseFuncArgExpr(str, lfirst(lc));
			if (lnext(func_call->args, lc))
				appendStringInfoString(str, ", ");
		}
	}
	appendStringInfoChar(str, ' ');

	if (func_call->agg_order != NULL && !func_call->agg_within_group)
	{
		deparseOptSortClause(str, func_call->agg_order);
	}

	removeTrailingSpace(str);
	appendStringInfoString(str, ") ");

	if (func_call->agg_order != NULL && func_call->agg_within_group)
	{
		appendStringInfoString(str, "WITHIN GROUP (");
		deparseOptSortClause(str, func_call->agg_order);
		removeTrailingSpace(str);
		appendStringInfoString(str, ") ");
	}

	if (func_call->agg_filter)
	{
		appendStringInfoString(str, "FILTER (WHERE ");
		deparseExpr(str, func_call->agg_filter);
		appendStringInfoString(str, ") ");
	}

	if (func_call->over)
	{
		appendStringInfoString(str, "OVER ");
		if (func_call->over->name)
			appendStringInfoString(str, func_call->over->name);
		else
			deparseWindowDef(str, func_call->over);
	}

	removeTrailingSpace(str);
}