diff options
Diffstat (limited to 'frontends/verilog/verilog_parser.y')
| -rw-r--r-- | frontends/verilog/verilog_parser.y | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/frontends/verilog/verilog_parser.y b/frontends/verilog/verilog_parser.y index 2389d7d31..16cac1460 100644 --- a/frontends/verilog/verilog_parser.y +++ b/frontends/verilog/verilog_parser.y @@ -58,7 +58,8 @@ namespace VERILOG_FRONTEND { bool do_not_require_port_stubs; bool default_nettype_wire; bool sv_mode, formal_mode, lib_mode; - bool norestrict_mode, assume_asserts_mode; + bool noassert_mode, noassume_mode, norestrict_mode; + bool assume_asserts_mode, assert_assumes_mode; bool current_wire_rand, current_wire_const; std::istream *lexin; } @@ -881,9 +882,15 @@ param_decl_list: single_param_decl: TOK_ID '=' expr { - if (astbuf1 == nullptr) - frontend_verilog_yyerror("syntax error"); - AstNode *node = astbuf1->clone(); + AstNode *node; + if (astbuf1 == nullptr) { + if (!sv_mode) + frontend_verilog_yyerror("syntax error"); + node = new AstNode(AST_PARAMETER); + node->children.push_back(AstNode::mkconst_int(0, true)); + } else { + node = astbuf1->clone(); + } node->str = *$1; delete node->children[0]; node->children[0] = $3; @@ -1275,16 +1282,28 @@ opt_stmt_label: assert: opt_stmt_label TOK_ASSERT opt_property '(' expr ')' ';' { - ast_stack.back()->children.push_back(new AstNode(assume_asserts_mode ? AST_ASSUME : AST_ASSERT, $5)); + if (noassert_mode) + delete $5; + else + ast_stack.back()->children.push_back(new AstNode(assume_asserts_mode ? AST_ASSUME : AST_ASSERT, $5)); } | opt_stmt_label TOK_ASSUME opt_property '(' expr ')' ';' { - ast_stack.back()->children.push_back(new AstNode(AST_ASSUME, $5)); + if (noassume_mode) + delete $5; + else + ast_stack.back()->children.push_back(new AstNode(assert_assumes_mode ? AST_ASSERT : AST_ASSUME, $5)); } | opt_stmt_label TOK_ASSERT opt_property '(' TOK_EVENTUALLY expr ')' ';' { - ast_stack.back()->children.push_back(new AstNode(assume_asserts_mode ? AST_FAIR : AST_LIVE, $6)); + if (noassert_mode) + delete $6; + else + ast_stack.back()->children.push_back(new AstNode(assume_asserts_mode ? AST_FAIR : AST_LIVE, $6)); } | opt_stmt_label TOK_ASSUME opt_property '(' TOK_EVENTUALLY expr ')' ';' { - ast_stack.back()->children.push_back(new AstNode(AST_FAIR, $6)); + if (noassume_mode) + delete $6; + else + ast_stack.back()->children.push_back(new AstNode(assert_assumes_mode ? AST_LIVE : AST_FAIR, $6)); } | opt_stmt_label TOK_COVER opt_property '(' expr ')' ';' { ast_stack.back()->children.push_back(new AstNode(AST_COVER, $5)); |