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allow coercion from Boolean to Integers and reals

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-05-07 21:32:02 -07:00
parent 6c1a5390ef
commit 99861ffc32
1 changed files with 13 additions and 0 deletions
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13
src/api/python/z3.py
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@ -1228,6 +1228,15 @@ class BoolSortRef(SortRef):
_z3_assert(self.eq(val.sort()), "Value cannot be converted into a Z3 Boolean value")
return val
def subsort(self, other):
return isinstance(other, ArithSortRef)
def is_int(self):
return True
def is_bool(self):
return True
class BoolRef(ExprRef):
"""All Boolean expressions are instances of this class."""
def sort(self):
@ -1900,6 +1909,10 @@ class ArithSortRef(SortRef):
return val
if val_s.is_int() and self.is_real():
return ToReal(val)
if val_s.is_bool() and self.is_int():
return If(val, 1, 0)
if val_s.is_bool() and self.is_real():
return ToReal(If(val, 1, 0))
if __debug__:
_z3_assert(False, "Z3 Integer/Real expression expected" )
else: