diff options
| author | Andrew Reynolds <andrew.j.reynolds@gmail.com> | 2020-02-26 13:54:41 -0600 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-02-26 13:54:41 -0600 |
| commit | b320aa323923822a7702997bbca05e8512da55a4 (patch) | |
| tree | 62ed510b54bbfef908296a264002052efc4fff98 /src/parser/cvc | |
| parent | f26ea8026e94252e4f1418be473d10a5f957b988 (diff) | |
Basic support for regular expression complement (#3437)
Fixes #3408 .
Adds basic rewriter, parsing, type checking and implements the required cases in regexp_operation.cpp. It also adds some missing documentation in regexp_operation.h
Diffstat (limited to 'src/parser/cvc')
| -rw-r--r-- | src/parser/cvc/Cvc.g | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/parser/cvc/Cvc.g b/src/parser/cvc/Cvc.g index 3fde52bbe..33ca7bcf2 100644 --- a/src/parser/cvc/Cvc.g +++ b/src/parser/cvc/Cvc.g @@ -240,6 +240,7 @@ tokens { REGEXP_LOOP_TOK = 'RE_LOOP'; REGEXP_EMPTY_TOK = 'RE_EMPTY'; REGEXP_SIGMA_TOK = 'RE_SIGMA'; + REGEXP_COMPLEMENT_TOK = 'RE_COMPLEMENT'; SETS_CARD_TOK = 'CARD'; @@ -2045,6 +2046,8 @@ stringTerm[CVC4::Expr& f] { f = MK_EXPR(CVC4::kind::REGEXP_RANGE, f, f2); } | REGEXP_LOOP_TOK LPAREN formula[f] COMMA formula[f2] COMMA formula[f3] RPAREN { f = MK_EXPR(CVC4::kind::REGEXP_LOOP, f, f2, f3); } + | REGEXP_COMPLEMENT_TOK LPAREN formula[f] RPAREN + { f = MK_EXPR(CVC4::kind::REGEXP_COMPLEMENT, f); } | REGEXP_EMPTY_TOK { f = MK_EXPR(CVC4::kind::REGEXP_EMPTY, std::vector<Expr>()); } | REGEXP_SIGMA_TOK |