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lib: Add vararg support

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Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
This commit is contained in:
Quentin Young 2016-08-02 16:40:03 +00:00
parent 279712aa19
commit 88255c7cfb
1 changed files with 25 additions and 2 deletions
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27
lib/command_parse.y
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@ -78,8 +78,8 @@ struct cmd_element *command; // command we're parsing
/* grammar proper */
%%
start: sentence_root
cmd_token_seq
start:
sentence_root cmd_token_seq
{
// create leaf node
struct graph_node *end = new_node(END_GN);
@ -93,6 +93,29 @@ start: sentence_root
}
fprintf(stderr, "Parsed full command successfully.\n");
}
| sentence_root cmd_token_seq '.' placeholder_token
{
currnode = add_node(currnode, $4);
if (currnode != $4)
free_node ($4);
// since varargs may match any number of the last token,
// simply add this node as a child of itself and proceed
// wth normal command termination procedure
add_node(currnode, currnode);
// create leaf node
struct graph_node *end = new_node(END_GN);
end->element = command;
// add node
if (add_node(currnode, end) != end)
{
yyerror("Duplicate command.");
YYABORT;
}
fprintf(stderr, "Parsed full command successfully.\n");
}
sentence_root: WORD
{