hello
I am playing with methods. It's +/- function with first hidden arguments.
example: sin(10) ~ (10).sin() is equivalent.
legal is substring('aaaa',1,3).upper() too etc
I spent some time with bison (without success).
indirection_el: '.' attr_name {
$$ = (Node *) makeString($2); } | '.' attr_name '(' ')'
{ $$ = (Node *) makeString($2); }
| '.' attr_name '(' expr_list ')' {
$$ = (Node *) makeString($2); } | '.' '*'
{ $$ = (Node *) makeString("*"); }
this is correct but doesn't work
postgres=# select (10).aaa.aaaa.bbbb.procedure(10);
ERROR: syntax error at or near "("
LINE 1: select (10).aaa.aaaa.bbbb.procedure(10); ^
postgres=# select (10).aaa.aaaa.bbbb.procedure();
ERROR: syntax error at or near "("
LINE 1: select (10).aaa.aaaa.bbbb.procedure();
correct is
indirection_el: '.' attr_name {
$$ = (Node *) makeString($2); } | '.' type_function_name '(' ')'
{ $$ = (Node *) makeString($2);
} | '.' type_function_name '(' expr_list ')' {
$$ = (Node *) makeString($2); } | '.' '*'
{ $$ = (Node *) makeString("*");
}
It works
postgres=# select (10).aaa(10).ajjaja(10).qqq();
ERROR: column notation .aaa applied to type integer, which is not a
composite type
but there arebison gram.y
gram.y: conflicts: 3 reduce/reduce
state 1160
1436 type_function_name: IDENT . 1439 ColLabel: IDENT .
'(' reduce using rule 1436 (type_function_name) '(' [reduce using rule 1439 (ColLabel)] $default
reduceusing rule 1439 (ColLabel)
state 1165
1437 type_function_name: unreserved_keyword . 1440 ColLabel: unreserved_keyword .
'(' reduce using rule 1437 (type_function_name) '(' [reduce using rule 1440 (ColLabel)] $default
reduceusing rule 1440 (ColLabel)
state 1167
1438 type_function_name: type_func_name_keyword . 1442 ColLabel: type_func_name_keyword .
'(' reduce using rule 1438 (type_function_name) '(' [reduce using rule 1442 (ColLabel)] $default
reduceusing rule 1442 (ColLabel)
Any ideas?
Regards
Pavel
