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remove iff

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-05-16 18:35:38 -07:00 • committed by Arie Gurfinkel
parent ecf15ab07d
commit ff0f257102
47 changed files with 199 additions and 264 deletions
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19
src/ast/ast.h
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@ -1041,7 +1041,7 @@ enum basic_sort_kind {
};
enum basic_op_kind {
OP_TRUE, OP_FALSE, OP_EQ, OP_DISTINCT, OP_ITE, OP_AND, OP_OR, OP_IFF, OP_XOR, OP_NOT, OP_IMPLIES, OP_OEQ, LAST_BASIC_OP,
OP_TRUE, OP_FALSE, OP_EQ, OP_DISTINCT, OP_ITE, OP_AND, OP_OR, OP_XOR, OP_NOT, OP_IMPLIES, OP_OEQ, LAST_BASIC_OP,
PR_UNDEF, PR_TRUE, PR_ASSERTED, PR_GOAL, PR_MODUS_PONENS, PR_REFLEXIVITY, PR_SYMMETRY, PR_TRANSITIVITY, PR_TRANSITIVITY_STAR, PR_MONOTONICITY, PR_QUANT_INTRO,
PR_DISTRIBUTIVITY, PR_AND_ELIM, PR_NOT_OR_ELIM, PR_REWRITE, PR_REWRITE_STAR, PR_PULL_QUANT,
@ -1060,7 +1060,6 @@ protected:
func_decl * m_false_decl;
func_decl * m_and_decl;
func_decl * m_or_decl;
func_decl * m_iff_decl;
func_decl * m_xor_decl;
func_decl * m_not_decl;
func_decl * m_implies_decl;
@ -1344,9 +1343,9 @@ public:
bool is_and(expr const * n) const { return is_app_of(n, m_fid, OP_AND); }
bool is_not(expr const * n) const { return is_app_of(n, m_fid, OP_NOT); }
bool is_eq(expr const * n) const { return is_app_of(n, m_fid, OP_EQ); }
bool is_iff(expr const* n) const { return is_eq(n) && is_bool(to_app(n)->get_arg(0)); }
bool is_oeq(expr const * n) const { return is_app_of(n, m_fid, OP_OEQ); }
bool is_distinct(expr const * n) const { return is_app_of(n, m_fid, OP_DISTINCT); }
bool is_iff(expr const * n) const { return is_app_of(n, m_fid, OP_IFF); }
bool is_xor(expr const * n) const { return is_app_of(n, m_fid, OP_XOR); }
bool is_ite(expr const * n) const { return is_app_of(n, m_fid, OP_ITE); }
bool is_term_ite(expr const * n) const { return is_ite(n) && !is_bool(n); }
@ -1361,7 +1360,6 @@ public:
bool is_and(func_decl const * d) const { return is_decl_of(d, m_fid, OP_AND); }
bool is_not(func_decl const * d) const { return is_decl_of(d, m_fid, OP_NOT); }
bool is_eq(func_decl const * d) const { return is_decl_of(d, m_fid, OP_EQ); }
bool is_iff(func_decl const * d) const { return is_decl_of(d, m_fid, OP_IFF); }
bool is_xor(func_decl const * d) const { return is_decl_of(d, m_fid, OP_XOR); }
bool is_ite(func_decl const * d) const { return is_decl_of(d, m_fid, OP_ITE); }
bool is_term_ite(func_decl const * d) const { return is_ite(d) && !is_bool(d->get_range()); }
@ -1369,13 +1367,13 @@ public:
MATCH_UNARY(is_not);
MATCH_BINARY(is_eq);
MATCH_BINARY(is_iff);
MATCH_BINARY(is_implies);
MATCH_BINARY(is_and);
MATCH_BINARY(is_or);
MATCH_BINARY(is_xor);
MATCH_TERNARY(is_and);
MATCH_TERNARY(is_or);
bool is_iff(expr const* n, expr*& lhs, expr*& rhs) const { return is_eq(n, lhs, rhs) && is_bool(lhs); }
bool is_ite(expr const * n, expr * & t1, expr * & t2, expr * & t3) const;
};
@ -1663,7 +1661,7 @@ public:
bool is_bool(expr const * n) const;
bool is_bool(sort const * s) const { return s == m_bool_sort; }
decl_kind get_eq_op(expr const * n) const { return is_bool(n) ? OP_IFF : OP_EQ; }
decl_kind get_eq_op(expr const * n) const { return OP_EQ; }
private:
sort * mk_sort(symbol const & name, sort_info * info);
@ -1987,9 +1985,9 @@ public:
bool is_and(expr const * n) const { return is_app_of(n, m_basic_family_id, OP_AND); }
bool is_not(expr const * n) const { return is_app_of(n, m_basic_family_id, OP_NOT); }
bool is_eq(expr const * n) const { return is_app_of(n, m_basic_family_id, OP_EQ); }
bool is_iff(expr const * n) const { return is_eq(n) && is_bool(to_app(n)->get_arg(0)); }
bool is_oeq(expr const * n) const { return is_app_of(n, m_basic_family_id, OP_OEQ); }
bool is_distinct(expr const * n) const { return is_app_of(n, m_basic_family_id, OP_DISTINCT); }
bool is_iff(expr const * n) const { return is_app_of(n, m_basic_family_id, OP_IFF); }
bool is_xor(expr const * n) const { return is_app_of(n, m_basic_family_id, OP_XOR); }
bool is_ite(expr const * n) const { return is_app_of(n, m_basic_family_id, OP_ITE); }
bool is_term_ite(expr const * n) const { return is_ite(n) && !is_bool(n); }
@ -2005,7 +2003,7 @@ public:
bool is_and(func_decl const * d) const { return is_decl_of(d, m_basic_family_id, OP_AND); }
bool is_not(func_decl const * d) const { return is_decl_of(d, m_basic_family_id, OP_NOT); }
bool is_eq(func_decl const * d) const { return is_decl_of(d, m_basic_family_id, OP_EQ); }
bool is_iff(func_decl const * d) const { return is_decl_of(d, m_basic_family_id, OP_IFF); }
bool is_iff(func_decl const * d) const { return is_decl_of(d, m_basic_family_id, OP_EQ) && is_bool(d->get_range()); }
bool is_xor(func_decl const * d) const { return is_decl_of(d, m_basic_family_id, OP_XOR); }
bool is_ite(func_decl const * d) const { return is_decl_of(d, m_basic_family_id, OP_ITE); }
bool is_term_ite(func_decl const * d) const { return is_ite(d) && !is_bool(d->get_range()); }
@ -2015,7 +2013,6 @@ public:
MATCH_UNARY(is_not);
MATCH_BINARY(is_eq);
MATCH_BINARY(is_iff);
MATCH_BINARY(is_implies);
MATCH_BINARY(is_and);
MATCH_BINARY(is_or);
@ -2023,6 +2020,8 @@ public:
MATCH_TERNARY(is_and);
MATCH_TERNARY(is_or);
bool is_iff(expr const* n, expr*& lhs, expr*& rhs) const { return is_eq(n, lhs, rhs) && is_bool(lhs); }
bool is_ite(expr const* n, expr*& t1, expr*& t2, expr*& t3) const {
if (is_ite(n)) {
t1 = to_app(n)->get_arg(0);
@ -2035,7 +2034,7 @@ public:
public:
app * mk_eq(expr * lhs, expr * rhs) { return mk_app(m_basic_family_id, get_eq_op(lhs), lhs, rhs); }
app * mk_iff(expr * lhs, expr * rhs) { return mk_app(m_basic_family_id, OP_IFF, lhs, rhs); }
app * mk_iff(expr * lhs, expr * rhs) { return mk_app(m_basic_family_id, OP_EQ, lhs, rhs); }
app * mk_oeq(expr * lhs, expr * rhs) { return mk_app(m_basic_family_id, OP_OEQ, lhs, rhs); }
app * mk_xor(expr * lhs, expr * rhs) { return mk_app(m_basic_family_id, OP_XOR, lhs, rhs); }
app * mk_ite(expr * c, expr * t, expr * e) { return mk_app(m_basic_family_id, OP_ITE, c, t, e); }