Function appendTypeNameToBuffer

src/backend/parser/parse_type.c:438–468

* appendTypeNameToBuffer * Append a string representing the name of a TypeName to a StringInfo. * This is the shared guts of TypeNameToString and TypeNameListToString. * * NB: this must work on TypeNames that do not describe any actual type; * it is mostly used for reporting lookup errors. */

 * it is mostly used for reporting lookup errors.
 */
static void
appendTypeNameToBuffer(const TypeName *typeName, StringInfo string)
{
	if (typeName->names != NIL)
	{
		/* Emit possibly-qualified name as-is */
		ListCell   *l;

		foreach(l, typeName->names)
		{
			if (l != list_head(typeName->names))
				appendStringInfoChar(string, '.');
			appendStringInfoString(string, strVal(lfirst(l)));
		}
	}
	else
	{
		/* Look up internally-specified type */
		appendStringInfoString(string, format_type_be(typeName->typeOid));
	}

	/*
	 * Add decoration as needed, but only for fields considered by
	 * LookupTypeName
	 */
	if (typeName->pct_type)
		appendStringInfoString(string, "%TYPE");

	if (typeName->arrayBounds != NIL)
		appendStringInfoString(string, "[]");
}

/*
 * TypeNameToString