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| author | Andrew Reynolds <andrew.j.reynolds@gmail.com> | 2020-03-30 16:29:23 -0500 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-03-30 16:29:23 -0500 |
| commit | 6838885b1250e0abbb1b8d56e6b400a5d7f3ca95 (patch) | |
| tree | 3c1a7417d471aeea531a36024a460d605cb5d5f1 /src/parser | |
| parent | 3ff70d61c111b70d5bf770669b0aa3f1d47a502e (diff) | |
Support indexed operators re.loop and re.^ (#4167)
Towards support for the strings standard.
This modifies our interface so that we accept the SMT-LIB standard versions of re.loop and re.^. This means re.loop no longer accepts 3 arguments but 1 (with 2 indices).
This means we no longer accept re.loop with only a lower bound and no upper bound on the number of repetitions.
Also fixes #4161.
Diffstat (limited to 'src/parser')
| -rw-r--r-- | src/parser/cvc/Cvc.g | 7 | ||||
| -rw-r--r-- | src/parser/smt2/smt2.cpp | 3 |
2 files changed, 7 insertions, 3 deletions
diff --git a/src/parser/cvc/Cvc.g b/src/parser/cvc/Cvc.g index 8b3b96cfd..7b3e1c4de 100644 --- a/src/parser/cvc/Cvc.g +++ b/src/parser/cvc/Cvc.g @@ -2074,8 +2074,11 @@ stringTerm[CVC4::api::Term& f] { f = MK_TERM(CVC4::api::REGEXP_OPT, f); } | REGEXP_RANGE_TOK LPAREN formula[f] COMMA formula[f2] RPAREN { f = MK_TERM(CVC4::api::REGEXP_RANGE, f, f2); } - | REGEXP_LOOP_TOK LPAREN formula[f] COMMA formula[f2] COMMA formula[f3] RPAREN - { f = MK_TERM(CVC4::api::REGEXP_LOOP, f, f2, f3); } + | REGEXP_LOOP_TOK LPAREN formula[f] COMMA lo=numeral COMMA hi=numeral RPAREN + { + api::Op lop = SOLVER->mkOp(CVC4::api::REGEXP_LOOP, lo, hi); + f = MK_TERM(lop, f); + } | REGEXP_COMPLEMENT_TOK LPAREN formula[f] RPAREN { f = MK_TERM(CVC4::api::REGEXP_COMPLEMENT, f); } | REGEXP_EMPTY_TOK diff --git a/src/parser/smt2/smt2.cpp b/src/parser/smt2/smt2.cpp index 7ba882f24..3233ee7e8 100644 --- a/src/parser/smt2/smt2.cpp +++ b/src/parser/smt2/smt2.cpp @@ -193,8 +193,9 @@ void Smt2::addStringOperators() { addOperator(api::REGEXP_STAR, "re.*"); addOperator(api::REGEXP_PLUS, "re.+"); addOperator(api::REGEXP_OPT, "re.opt"); + addIndexedOperator(api::REGEXP_REPEAT, api::REGEXP_REPEAT, "re.^"); + addIndexedOperator(api::REGEXP_LOOP, api::REGEXP_LOOP, "re.loop"); addOperator(api::REGEXP_RANGE, "re.range"); - addOperator(api::REGEXP_LOOP, "re.loop"); addOperator(api::REGEXP_COMPLEMENT, "re.comp"); addOperator(api::REGEXP_DIFF, "re.diff"); addOperator(api::STRING_LT, "str.<"); |