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2009 Nov 25
1
Question R's parser : - parsing "x=\n 1"
Hello
I was reading the source main/src/gram.y and had one question, how does R parse
x =
1
According the grammar:
prog : END_OF_INPUT { return 0; }
| '\n' { return xxvalue(NULL,2,NULL); }
| expr_or_assign '\n' { return xxvalue($1,3,&@1); }
| expr_or_assign ';' { return xxvalue($1,4,&@1); }
| error { YYABORT; }
;
So this should be of the 3rd form.
Also, the expr_or_assign is of the 2nd form in
expr_or_assign : expr...