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Support import/export lists in modport (#3886)

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This commit is contained in:
Gökçe Aydos
2023-01-18 11:46:51 -05:00
committed by GitHub
parent 3fe81a3832
commit 956fd89b87
4 changed files with 91 additions and 6 deletions
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src/verilog.y
+18 -6
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@@ -96,6 +96,8 @@ public:
bool m_tracingParse = true; // Tracing disable for parser
bool m_insideProperty = false; // Is inside property declaration
bool m_typedPropertyPort = false; // True if typed property port occurred on port lists
bool m_modportImpExpActive = false; // Standalone ID is a tf_identifier instead of port_identifier
bool m_modportImpExpLastIsExport = false; // Last import_export statement in modportPortsDecl is an export
int m_pinNum = -1; // Pin number currently parsing
std::stack<int> m_pinStack; // Queue of pin numbers being parsed
@@ -1744,30 +1746,40 @@ modportPortsDeclList<nodep>:
// We track the type as with the V2k series of defines, then create as each ID is seen.
modportPortsDecl<nodep>:
// // IEEE: modport_simple_ports_declaration
port_direction modportSimplePort { $$ = new AstModportVarRef{$<fl>2, *$2, GRAMMARP->m_varIO}; }
port_direction modportSimplePortOrTFPort { $$ = new AstModportVarRef{$<fl>2, *$2, GRAMMARP->m_varIO};
GRAMMARP->m_modportImpExpActive = false;}
// // IEEE: modport_clocking_declaration
| yCLOCKING idAny/*clocking_identifier*/
{ $$ = nullptr; BBUNSUP($<fl>1, "Unsupported: Modport clocking"); }
// // IEEE: yIMPORT modport_tf_port
// // IEEE: yEXPORT modport_tf_port
// // modport_tf_port expanded here
| yIMPORT id/*tf_identifier*/ { $$ = new AstModportFTaskRef{$<fl>2, *$2, false}; }
| yEXPORT id/*tf_identifier*/ { $$ = new AstModportFTaskRef{$<fl>2, *$2, true}; }
| yIMPORT id/*tf_identifier*/ { $$ = new AstModportFTaskRef{$<fl>2, *$2, false};
GRAMMARP->m_modportImpExpActive = true;
GRAMMARP->m_modportImpExpLastIsExport = false; }
| yEXPORT id/*tf_identifier*/ { $$ = new AstModportFTaskRef{$<fl>2, *$2, true};
GRAMMARP->m_modportImpExpActive = true;
GRAMMARP->m_modportImpExpLastIsExport = true; }
| yIMPORT method_prototype
{ $$ = nullptr; BBUNSUP($<fl>1, "Unsupported: Modport import with prototype"); }
| yEXPORT method_prototype
{ $$ = nullptr; BBUNSUP($<fl>1, "Unsupported: Modport export with prototype"); }
// Continuations of above after a comma.
// // IEEE: modport_simple_ports_declaration
| modportSimplePort { $$ = new AstModportVarRef{$<fl>1, *$1, GRAMMARP->m_varIO}; }
| modportSimplePortOrTFPort { $$ = GRAMMARP->m_modportImpExpActive ?
static_cast<AstNode*>(
new AstModportFTaskRef(
$<fl>1, *$1, GRAMMARP->m_modportImpExpLastIsExport) ) :
static_cast<AstNode*>(
new AstModportVarRef(
$<fl>1, *$1, GRAMMARP->m_varIO) ); }
;
modportSimplePort<strp>: // IEEE: modport_simple_port or modport_tf_port, depending what keyword was earlier
modportSimplePortOrTFPort<strp>:// IEEE: modport_simple_port or modport_tf_port, depending what keyword was earlier
id { $$ = $1; }
//UNSUP '.' idAny '(' ')' { }
//UNSUP '.' idAny '(' expr ')' { }
;
//************************************************
// Variable Declarations