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SV: Add support for var decls in unnamed fork/join* blocks. 

SystemVerilog allows variables to be declared in unnamed fork/join*
blocks. This patch adds support for this functionality.
This commit is contained in:
Cary R 2014-07-23 09:50:18 -07:00
parent 8e7e3c7493
commit 0cbd6d99af
1 changed files with 34 additions and 7 deletions
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41
parse.y
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@ -5702,14 +5702,41 @@ statement_item /* This is roughly statement_item in the LRM */
FILE_NAME(tmp, @1);
$$ = tmp;
}
| K_fork statement_or_null_list join_keyword
// HERE
// Create an anonymous scope and if no definitions are found then delete
// the scope and use a simple block.
{ PBlock*tmp = new PBlock($3);
/* In SystemVerilog an unnamed block can contain variable declarations. */
| K_fork
{ PBlock*tmp = pform_push_block_scope(0, PBlock::BL_PAR);
FILE_NAME(tmp, @1);
tmp->set_statement(*$2);
delete $2;
current_block_stack.push(tmp);
}
block_item_decls_opt
{ if ($3) {
if (! gn_system_verilog()) {
yyerror("error: Variable declaration in unnamed block "
"requires SystemVerilog.");
}
} else {
/* If there are no declarations in the scope then just delete it. */
pform_pop_scope();
assert(! current_block_stack.empty());
PBlock*tmp = current_block_stack.top();
current_block_stack.pop();
delete tmp;
}
}
statement_or_null_list join_keyword
{ PBlock*tmp;
if ($3) {
pform_pop_scope();
assert(! current_block_stack.empty());
tmp = current_block_stack.top();
current_block_stack.pop();
tmp->set_join_type($6);
} else {
tmp = new PBlock($6);
FILE_NAME(tmp, @1);
}
if ($5) tmp->set_statement(*$5);
delete $5;
$$ = tmp;
}
| K_fork ':' IDENTIFIER