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Add parser helper rule for class identifiers 

There are a few places in the grammar that follow the pattern of
`implicit_class_handle '.' hierarchy_identifier` and then splice the two
identifier paths into a single one. Factor this into a common helper rule
to avoid duplicated code.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
This commit is contained in:
Lars-Peter Clausen 2022-02-26 13:09:52 +01:00
parent 9810ce6e60
commit 967e3455fe
1 changed files with 20 additions and 35 deletions
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55
parse.y
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@ -639,7 +639,7 @@ static void current_function_set_statement(const YYLTYPE&loc, std::vector<Statem
%type <let_port_lst> let_port_list_opt let_port_list
%type <let_port_itm> let_port_item
%type <pform_name> hierarchy_identifier implicit_class_handle
%type <pform_name> hierarchy_identifier implicit_class_handle class_hierarchy_identifier
%type <expr> assignment_pattern expression expr_mintypmax
%type <expr> expr_primary_or_typename expr_primary
%type <expr> class_new dynamic_array_new let_default_opt
@ -1536,6 +1536,15 @@ implicit_class_handle /* IEEE1800-2005: A.8.4 */
| K_super { $$ = pform_create_super(); }
;
/* `this` or `super` followed by an identifier */
class_hierarchy_identifier
: implicit_class_handle '.' hierarchy_identifier
{ $1->splice($1->end(), *$3);
delete $3;
$$ = $1;
}
;
/* SystemVerilog adds support for the increment/decrement
expressions, which look like a++, --a, etc. These are primaries
but are in their own rules because they can also be
@ -3759,17 +3768,11 @@ expr_primary
delete $2;
$$ = tmp;
}
| implicit_class_handle '.' hierarchy_identifier '(' expression_list_with_nuls ')'
{ pform_name_t*t_name = $1;
while (! $3->empty()) {
t_name->push_back($3->front());
$3->pop_front();
}
list<PExpr*>*expr_list = $5;
| class_hierarchy_identifier '(' expression_list_with_nuls ')'
{ list<PExpr*>*expr_list = $3;
strip_tail_items(expr_list);
PECallFunction*tmp = pform_make_call_function(@1, *t_name, *expr_list);
PECallFunction*tmp = pform_make_call_function(@1, *$1, *expr_list);
delete $1;
delete $3;
$$ = tmp;
}
| SYSTEM_IDENTIFIER '(' expression_list_proper ')'
@ -3803,16 +3806,10 @@ expr_primary
$$ = tmp;
}
| implicit_class_handle '.' hierarchy_identifier
{ pform_name_t*t_name = $1;
while (! $3->empty()) {
t_name->push_back($3->front());
$3->pop_front();
}
PEIdent*tmp = new PEIdent(*t_name);
FILE_NAME(tmp,@1);
| class_hierarchy_identifier
{ PEIdent*tmp = new PEIdent(*$1);
FILE_NAME(tmp, @1);
delete $1;
delete $3;
$$ = tmp;
}
@ -4610,17 +4607,11 @@ lpvalue
delete $1;
}
| implicit_class_handle '.' hierarchy_identifier
{ pform_name_t*t_name = $1;
while (!$3->empty()) {
t_name->push_back($3->front());
$3->pop_front();
}
PEIdent*tmp = new PEIdent(*t_name);
| class_hierarchy_identifier
{ PEIdent*tmp = new PEIdent(*$1);
FILE_NAME(tmp, @1);
$$ = tmp;
delete $1;
delete $3;
}
| '{' expression_list_proper '}'
@ -6650,17 +6641,11 @@ statement_item /* This is roughly statement_item in the LRM */
$$ = tmp;
}
| implicit_class_handle '.' hierarchy_identifier '(' expression_list_with_nuls ')' ';'
{ pform_name_t*t_name = $1;
while (! $3->empty()) {
t_name->push_back($3->front());
$3->pop_front();
}
PCallTask*tmp = new PCallTask(*t_name, *$5);
| class_hierarchy_identifier '(' expression_list_with_nuls ')' ';'
{ PCallTask*tmp = new PCallTask(*$1, *$3);
FILE_NAME(tmp, @1);
delete $1;
delete $3;
delete $5;
$$ = tmp;
}