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| author | whitequark <whitequark@whitequark.org> | 2021-03-07 05:48:03 -0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-03-07 05:48:03 -0800 |
| commit | 9bb839c613aff1d7658eac8ec46c3dcd3b220c5f (patch) | |
| tree | 1a78ba758840c0d74ea2f1a3ac8b55778e7e4f4b /frontends/verilog/verilog_parser.y | |
| parent | 72ae15c77c34fe2306c3ac41c40521e9141b8cf0 (diff) | |
| parent | d738b2c1272b02d8799e9feda83b1eae8ba10c07 (diff) | |
| download | yosys-9bb839c613aff1d7658eac8ec46c3dcd3b220c5f.tar.gz yosys-9bb839c613aff1d7658eac8ec46c3dcd3b220c5f.tar.bz2 yosys-9bb839c613aff1d7658eac8ec46c3dcd3b220c5f.zip | |
Merge pull request #2626 from zachjs/param-no-default
sv: support for parameters without default values
Diffstat (limited to 'frontends/verilog/verilog_parser.y')
| -rw-r--r-- | frontends/verilog/verilog_parser.y | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/frontends/verilog/verilog_parser.y b/frontends/verilog/verilog_parser.y index bcba9b76a..ea8cc0765 100644 --- a/frontends/verilog/verilog_parser.y +++ b/frontends/verilog/verilog_parser.y @@ -1462,7 +1462,26 @@ param_decl_list: single_param_decl | param_decl_list ',' single_param_decl; single_param_decl: - TOK_ID '=' expr { + single_param_decl_ident '=' expr { + AstNode *decl = ast_stack.back()->children.back(); + log_assert(decl->type == AST_PARAMETER || decl->type == AST_LOCALPARAM); + delete decl->children[0]; + decl->children[0] = $3; + } | + single_param_decl_ident { + AstNode *decl = ast_stack.back()->children.back(); + if (decl->type != AST_PARAMETER) { + log_assert(decl->type == AST_LOCALPARAM); + frontend_verilog_yyerror("localparam initialization is missing!"); + } + if (!sv_mode) + frontend_verilog_yyerror("Parameter defaults can only be omitted in SystemVerilog mode!"); + delete decl->children[0]; + decl->children.erase(decl->children.begin()); + }; + +single_param_decl_ident: + TOK_ID { AstNode *node; if (astbuf1 == nullptr) { if (!sv_mode) @@ -1473,10 +1492,9 @@ single_param_decl: node = astbuf1->clone(); } node->str = *$1; - delete node->children[0]; - node->children[0] = $3; ast_stack.back()->children.push_back(node); delete $1; + SET_AST_NODE_LOC(node, @1, @1); }; defparam_decl: |