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To match the smt2 Unicode standard. The internal ones are left unchanged for now.
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Renamed operator CHOICE to WITNESS, and removed it from the front end
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This PR enables THEORY_UF by default for sets and adds the operator CHOOSE for sets which returns an element from a given set. The semantics is as follows:
If a set A = {x}, then the term (choose A) is equivalent to the term x.
If the set is empty, then (choose A) is an arbitrary value.
If the set has cardinality > 1, then (choose A) will deterministically return an element in A.
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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.
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This commit adds support for `str.from_code`. This is work towards
supporting the new strings standard. The code currently just does an
eager expansion of the operator. The commit also renames `STRING_CODE`
to `STRING_TO_CODE` to better reflect the names of the operators in the
new standard.
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Towards support for the strings standard. This adds support for str.is_digit and re.diff, which both can be eliminated eager during preprocessing.
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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
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Towards parser/API migration.
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API (#3355)
* Treat uninterpreted functions as a child in Term iteration
* Remove unnecessary const_iterator constructor
* Add parameter comments to const_iterator constructor
* Use operator[] instead of storing a vector of Expr children
* Switch pos member variable from int to uint32_t
* Add comment about how UFs are treated in iteration
* Allow OpTerm to contain a single Kind, update OpTerm construction
* Update mkTerm to use only an OpTerm (and not also a Kind)
* Remove unnecessary function checkMkOpTerm
* Update mkOpTerm comments to not use _OP Kinds
* Update examples to use new mkTerm
* First pass on fixing unit test
* Override kind for Constructor and Selector Terms
* More fixes to unit tests
* Updates to parser
* Remove old assert (for Kind, OpTerm pattern which was removed)
* Remove *_OP kinds from public API
* Add hasOpTerm and getOpTerm methods to Term
* Add test for UF iteration
* Add unit test for getOpTerm
* Move OpTerm implementation above Term implemenation to match header file
Moved in header because Term::getOpTerm() returns an OpTerm and the compiler complains
if OpTerm is not defined earlier. Simply moving the declaration is easier/cleaner than
forward declaring within the same file that it's declared.
* Fix mkTerm in datatypes-new.cpp example
* Use helper function for creating term from Kind to avoid nested API calls
* Rename: OpTerm->Op in API
* Update OpTerm->Op in examples/tests/parser
* Add case for APPLY_TESTER
* operator term -> operator
* Update src/api/cvc4cpp.h
Co-Authored-By: Aina Niemetz <aina.niemetz@gmail.com>
* Comment comment suggestion
Co-Authored-By: Aina Niemetz <aina.niemetz@gmail.com>
* Add not-null checks and implement Op from a single Kind constructor
* Undo sed mistake for OpTerm replacement
* Add 'd_' prefix to member vars
* Fix comment and remove old commented-out code
* Formatting
* Revert "Formatting"
This reverts commit d1d5fc1fb71496daeba668e97cad84c213200ba9.
* More fixes for sed mistakes
* Minor formatting
* Undo changes in CVC parser
* Add isIndexed and prefix with d_
* Create helper function for isIndexed to avoid calling API functions in other API functions
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Previously, the metakind header defined macros for the number of bits
reserved for fields in the NodeValue "header" (for the reference count,
the node kind, the number of children and the node id). These macros
were redundant, since the only one using them was the NodeValue itself,
which redefined them (while using them) as constants in the class.
Additionally, MAX_CHILDREN was defined (using these macros) not only
in the metakind header, but redefined in other places.
This commit defines the above values as constexpr members of the
NodeValue class and cleans up redundancy.
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This cleans up naming of API functions to create first-order constants and variables.
mkVar -> mkConst
mkBoundVar -> mkVar
declareConst is redundant (= mkConst) and thus, in an effort to avoid redundancy, removed.
Note that we want to avoid redundancy in order to reduce code duplication and maintenance
overhead (we do not allow nested API calls, since this is problematic when tracing API calls).
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Fixes 2887.
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This required fixing the OpTerm handling for mkTerm functions in the API.
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…underlying type.
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This should hopefully also take care of the open coverity issues for cvc4cpp.cpp.
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