Difference between revisions of "Access attributes of ports in parsetree"

Revision as of 11:41, 3 April 2019

Perl script:

#!/usr/bin/perl

use strict ;

push(@INC, "../pm") ;
require "Verific.pm" ;

if (!Verific::veri_file::Read("test.v")) { exit 1 ; }

my $mod = Verific::veri_file::GetModule("test") ;
if (!$mod) { exit 2 ; }

# Attributes from parse tree port ids:
my $iter = new Verific::VeriIdDefArrayIter($mod->GetPorts()) ;
for (my $port = $iter->First(); $iter->GetIndex() < $iter->Size(); $port = $iter->Next()) {
    if (!$port) { next ; }

    print "Port: " . $port->Name() . "\n" ;
    my $map_iter = Verific::Map::Iterator($port->GetAttributes(), "char", "Verific::VeriExpression") ;
    my $map_key ;
    my $map_value ;
    while (($map_key, $map_value) = $map_iter->Next()) {
        print "\tAttribute: $map_key -> " . $map_value->GetPrettyPrintedString() . "\n" ;
    }
}

# Attributes from parse tree port declarations:
my $iter = new Verific::VeriModuleItemArrayIter($mod->GetModuleItems()) ;
for (my $mod_item = $iter->First(); $iter->GetIndex() < $iter->Size(); $mod_item = $iter->Next()) {
    if (!$mod_item || !$mod_item->IsDataDecl()) { next ; }

    print "Module item: " . $mod_item->GetPrettyPrintedString() ;
    my $map_iter = Verific::Map::Iterator($mod_item->GetAttributes(), "char", "Verific::VeriExpression") ;
    my $map_key ;
    my $map_value ;
    while (($map_key, $map_value) = $map_iter->Next()) {
        print "\tAttribute: $map_key -> " . $map_value->GetPrettyPrintedString() . "\n" ;
    }
}

# Attributes from netlist ports:
my @ports = Verific::FOREACH_PORT_OF_NETLIST(Verific::Netlist::PresentDesign()) ;
foreach my $port ( @ports ) {
    if (!$port) { next ; }

    print "Port: " . $port->Name() . "\n" ;
    my @atts = Verific::FOREACH_ATTRIBUTE($port) ;
    foreach my $att ( @atts ) {
        if (!$att) { next ; }
        print "\tAttribute: " . $att->Key() . " -> " . $att->Value() . "\n" ;
    }
}

exit 0;
 

Verilog testcase:

module test (in, out) ;
    (* attr1 = 0, attr2 = 1 *) input in /* verific a */ ;
    (* attr3 = 2, attr4 = 3 *) output out /* verific b */ ;

    assign out = in ;
endmodule
 

Run:

-- Analyzing Verilog file 'test.v' (VERI-1482)
test.v(1): INFO: compiling module 'test' (VERI-1018)
Port: in
	Attribute: a -> 1
Port: out
	Attribute: b -> 1
Module item: (* attr1=0, attr2=1 *) input in /* verific a=1 */  ; 
	Attribute: attr1 -> 0
	Attribute: attr2 -> 1
Module item: (* attr3=2, attr4=3 *) output out /* verific b=1 */  ; 
	Attribute: attr3 -> 2
	Attribute: attr4 -> 3
Port: in
	Attribute: attr1 -> 0
	Attribute: attr2 -> 1
	Attribute: a -> 1
Port: out
	Attribute: attr3 -> 2
	Attribute: attr4 -> 3
	Attribute: b -> 1