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| author | Andrew Reynolds <andrew.j.reynolds@gmail.com> | 2019-12-23 17:18:19 -0600 |
|---|---|---|
| committer | Andres Noetzli <andres.noetzli@gmail.com> | 2019-12-23 15:18:19 -0800 |
| commit | b3471b719f1cd031d35e9a431027088b0dec156b (patch) | |
| tree | bc5e55a278f9e927471ce99146e9fdc992bc716b /src/parser/cvc/Cvc.g | |
| parent | f5ca3e5d09b457ac21b10793eb5d1efe3fbe40f6 (diff) | |
Initial support for string reverse (#3581)
Type rules, parsing and printing, basic rewriting including constant evaluation, reduction for string reverse (`str.rev`).
Also improves support in a few places for tolower/toupper.
Diffstat (limited to 'src/parser/cvc/Cvc.g')
| -rw-r--r-- | src/parser/cvc/Cvc.g | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/parser/cvc/Cvc.g b/src/parser/cvc/Cvc.g index e4849aae6..2dceba768 100644 --- a/src/parser/cvc/Cvc.g +++ b/src/parser/cvc/Cvc.g @@ -227,6 +227,9 @@ tokens { STRING_STOI_TOK = 'STRING_TO_INTEGER'; STRING_ITOS_TOK = 'INTEGER_TO_STRING'; STRING_TO_REGEXP_TOK = 'STRING_TO_REGEXP'; + STRING_TOLOWER_TOK = 'TOLOWER'; + STRING_TOUPPER_TOK = 'TOUPPER'; + STRING_REV_TOK = 'REVERSE'; REGEXP_CONCAT_TOK = 'RE_CONCAT'; REGEXP_UNION_TOK = 'RE_UNION'; REGEXP_INTER_TOK = 'RE_INTER'; @@ -2038,6 +2041,12 @@ stringTerm[CVC4::Expr& f] { f = MK_EXPR(CVC4::kind::STRING_ITOS, f); } | STRING_TO_REGEXP_TOK LPAREN formula[f] RPAREN { f = MK_EXPR(CVC4::kind::STRING_TO_REGEXP, f); } + | STRING_TOLOWER_TOK LPAREN formula[f] RPAREN + { f = MK_EXPR(CVC4::kind::STRING_TOLOWER, f); } + | STRING_TOUPPER_TOK LPAREN formula[f] RPAREN + { f = MK_EXPR(CVC4::kind::STRING_TOUPPER, f); } + | STRING_REV_TOK LPAREN formula[f] RPAREN + { f = MK_EXPR(CVC4::kind::STRING_REV, f); } | REGEXP_CONCAT_TOK LPAREN formula[f] { args.push_back(f); } ( COMMA formula[f2] { args.push_back(f2); } )+ RPAREN { f = MK_EXPR(CVC4::kind::REGEXP_CONCAT, args); } |