diff options
Diffstat (limited to 'src/parser_bison.y')
| -rw-r--r-- | src/parser_bison.y | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/parser_bison.y b/src/parser_bison.y index ec8b0dd8..df672b1e 100644 --- a/src/parser_bison.y +++ b/src/parser_bison.y @@ -185,6 +185,8 @@ int nft_lex(void *, void *, void *); %token INCLUDE "include" %token DEFINE "define" +%token REDEFINE "redefine" +%token UNDEFINE "undefine" %token FIB "fib" @@ -763,6 +765,26 @@ common_block : INCLUDE QUOTED_STRING stmt_separator symbol_bind(scope, $2, $4); xfree($2); } + | REDEFINE identifier '=' initializer_expr stmt_separator + { + struct scope *scope = current_scope(state); + + /* ignore missing identifier */ + symbol_unbind(scope, $2); + symbol_bind(scope, $2, $4); + xfree($2); + } + | UNDEFINE identifier stmt_separator + { + struct scope *scope = current_scope(state); + + if (symbol_unbind(scope, $2) < 0) { + erec_queue(error(&@2, "undefined symbol '%s'", $2), + state->msgs); + YYERROR; + } + xfree($2); + } | error stmt_separator { if (++state->nerrs == nft->parser_max_errors) |