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AstVector Class Reference
+ Inheritance diagram for AstVector:

Public Member Functions

 __init__ (self, v=None, ctx=None)
 
 __del__ (self)
 
 __len__ (self)
 
 __getitem__ (self, i)
 
 __setitem__ (self, i, v)
 
 push (self, v)
 
 resize (self, sz)
 
 __contains__ (self, item)
 
 translate (self, other_ctx)
 
 __copy__ (self)
 
 __deepcopy__ (self, memo={})
 
 __repr__ (self)
 
 sexpr (self)
 
- Public Member Functions inherited from Z3PPObject
 use_pp (self)
 

Data Fields

 vector = None
 
 ctx = _get_ctx(ctx)
 

Additional Inherited Members

- Protected Member Functions inherited from Z3PPObject
 _repr_html_ (self)
 

Detailed Description

A collection (vector) of ASTs.

Definition at line 5908 of file z3py.py.

Constructor & Destructor Documentation

◆ __init__()

__init__ ( self,
v = None,
ctx = None )

Definition at line 5911 of file z3py.py.

5911 def __init__(self, v=None, ctx=None):
5912 self.vector = None
5913 if v is None:
5914 self.ctx = _get_ctx(ctx)
5915 self.vector = Z3_mk_ast_vector(self.ctx.ref())
5916 else:
5917 self.vector = v
5918 assert ctx is not None
5919 self.ctx = ctx
5920 Z3_ast_vector_inc_ref(self.ctx.ref(), self.vector)
5921
void Z3_API Z3_ast_vector_inc_ref(Z3_context c, Z3_ast_vector v)
Increment the reference counter of the given AST vector.
Z3_ast_vector Z3_API Z3_mk_ast_vector(Z3_context c)
Return an empty AST vector.

◆ __del__()

__del__ ( self)

Definition at line 5922 of file z3py.py.

5922 def __del__(self):
5923 if self.vector is not None and self.ctx.ref() is not None and Z3_ast_vector_dec_ref is not None:
5924 Z3_ast_vector_dec_ref(self.ctx.ref(), self.vector)
5925
void Z3_API Z3_ast_vector_dec_ref(Z3_context c, Z3_ast_vector v)
Decrement the reference counter of the given AST vector.

Member Function Documentation

◆ __contains__()

__contains__ ( self,
item )
Return `True` if the vector contains `item`.

>>> x = Int('x')
>>> A = AstVector()
>>> x in A
False
>>> A.push(x)
>>> x in A
True
>>> (x+1) in A
False
>>> A.push(x+1)
>>> (x+1) in A
True
>>> A
[x, x + 1]

Definition at line 6009 of file z3py.py.

6009 def __contains__(self, item):
6010 """Return `True` if the vector contains `item`.
6011
6012 >>> x = Int('x')
6013 >>> A = AstVector()
6014 >>> x in A
6015 False
6016 >>> A.push(x)
6017 >>> x in A
6018 True
6019 >>> (x+1) in A
6020 False
6021 >>> A.push(x+1)
6022 >>> (x+1) in A
6023 True
6024 >>> A
6025 [x, x + 1]
6026 """
6027 for elem in self:
6028 if elem.eq(item):
6029 return True
6030 return False
6031

◆ __copy__()

__copy__ ( self)

Definition at line 6048 of file z3py.py.

6048 def __copy__(self):
6049 return self.translate(self.ctx)
6050

◆ __deepcopy__()

__deepcopy__ ( self,
memo = {} )

Definition at line 6051 of file z3py.py.

6051 def __deepcopy__(self, memo={}):
6052 return self.translate(self.ctx)
6053

◆ __getitem__()

__getitem__ ( self,
i )
Return the AST at position `i`.

>>> A = AstVector()
>>> A.push(Int('x') + 1)
>>> A.push(Int('y'))
>>> A[0]
x + 1
>>> A[1]
y

Definition at line 5939 of file z3py.py.

5939 def __getitem__(self, i):
5940 """Return the AST at position `i`.
5941
5942 >>> A = AstVector()
5943 >>> A.push(Int('x') + 1)
5944 >>> A.push(Int('y'))
5945 >>> A[0]
5946 x + 1
5947 >>> A[1]
5948 y
5949 """
5950
5951 if isinstance(i, int):
5952 if i < 0:
5953 i += self.__len__()
5954
5955 if i >= self.__len__():
5956 raise IndexError
5957 return _to_ast_ref(Z3_ast_vector_get(self.ctx.ref(), self.vector, i), self.ctx)
5958
5959 elif isinstance(i, slice):
5960 result = []
5961 for ii in range(*i.indices(self.__len__())):
5962 result.append(_to_ast_ref(
5963 Z3_ast_vector_get(self.ctx.ref(), self.vector, ii),
5964 self.ctx,
5965 ))
5966 return result
5967
Z3_ast Z3_API Z3_ast_vector_get(Z3_context c, Z3_ast_vector v, unsigned i)
Return the AST at position i in the AST vector v.

◆ __len__()

__len__ ( self)
Return the size of the vector `self`.

>>> A = AstVector()
>>> len(A)
0
>>> A.push(Int('x'))
>>> A.push(Int('x'))
>>> len(A)
2

Definition at line 5926 of file z3py.py.

5926 def __len__(self):
5927 """Return the size of the vector `self`.
5928
5929 >>> A = AstVector()
5930 >>> len(A)
5931 0
5932 >>> A.push(Int('x'))
5933 >>> A.push(Int('x'))
5934 >>> len(A)
5935 2
5936 """
5937 return int(Z3_ast_vector_size(self.ctx.ref(), self.vector))
5938
unsigned Z3_API Z3_ast_vector_size(Z3_context c, Z3_ast_vector v)
Return the size of the given AST vector.

Referenced by __getitem__(), and __setitem__().

◆ __repr__()

__repr__ ( self)

Definition at line 6054 of file z3py.py.

6054 def __repr__(self):
6055 return obj_to_string(self)
6056

◆ __setitem__()

__setitem__ ( self,
i,
v )
Update AST at position `i`.

>>> A = AstVector()
>>> A.push(Int('x') + 1)
>>> A.push(Int('y'))
>>> A[0]
x + 1
>>> A[0] = Int('x')
>>> A[0]
x

Definition at line 5968 of file z3py.py.

5968 def __setitem__(self, i, v):
5969 """Update AST at position `i`.
5970
5971 >>> A = AstVector()
5972 >>> A.push(Int('x') + 1)
5973 >>> A.push(Int('y'))
5974 >>> A[0]
5975 x + 1
5976 >>> A[0] = Int('x')
5977 >>> A[0]
5978 x
5979 """
5980 if i >= self.__len__():
5981 raise IndexError
5982 Z3_ast_vector_set(self.ctx.ref(), self.vector, i, v.as_ast())
5983
void Z3_API Z3_ast_vector_set(Z3_context c, Z3_ast_vector v, unsigned i, Z3_ast a)
Update position i of the AST vector v with the AST a.

◆ push()

push ( self,
v )
Add `v` in the end of the vector.

>>> A = AstVector()
>>> len(A)
0
>>> A.push(Int('x'))
>>> len(A)
1

Definition at line 5984 of file z3py.py.

5984 def push(self, v):
5985 """Add `v` in the end of the vector.
5986
5987 >>> A = AstVector()
5988 >>> len(A)
5989 0
5990 >>> A.push(Int('x'))
5991 >>> len(A)
5992 1
5993 """
5994 Z3_ast_vector_push(self.ctx.ref(), self.vector, v.as_ast())
5995
void Z3_API Z3_ast_vector_push(Z3_context c, Z3_ast_vector v, Z3_ast a)
Add the AST a in the end of the AST vector v. The size of v is increased by one.

Referenced by Solver.__enter__().

◆ resize()

resize ( self,
sz )
Resize the vector to `sz` elements.

>>> A = AstVector()
>>> A.resize(10)
>>> len(A)
10
>>> for i in range(10): A[i] = Int('x')
>>> A[5]
x

Definition at line 5996 of file z3py.py.

5996 def resize(self, sz):
5997 """Resize the vector to `sz` elements.
5998
5999 >>> A = AstVector()
6000 >>> A.resize(10)
6001 >>> len(A)
6002 10
6003 >>> for i in range(10): A[i] = Int('x')
6004 >>> A[5]
6005 x
6006 """
6007 Z3_ast_vector_resize(self.ctx.ref(), self.vector, sz)
6008
void Z3_API Z3_ast_vector_resize(Z3_context c, Z3_ast_vector v, unsigned n)
Resize the AST vector v.

◆ sexpr()

sexpr ( self)
Return a textual representation of the s-expression representing the vector.

Definition at line 6057 of file z3py.py.

6057 def sexpr(self):
6058 """Return a textual representation of the s-expression representing the vector."""
6059 return Z3_ast_vector_to_string(self.ctx.ref(), self.vector)
6060
Z3_string Z3_API Z3_ast_vector_to_string(Z3_context c, Z3_ast_vector v)
Convert AST vector into a string.

◆ translate()

translate ( self,
other_ctx )
Copy vector `self` to context `other_ctx`.

>>> x = Int('x')
>>> A = AstVector()
>>> A.push(x)
>>> c2 = Context()
>>> B = A.translate(c2)
>>> B
[x]

Definition at line 6032 of file z3py.py.

6032 def translate(self, other_ctx):
6033 """Copy vector `self` to context `other_ctx`.
6034
6035 >>> x = Int('x')
6036 >>> A = AstVector()
6037 >>> A.push(x)
6038 >>> c2 = Context()
6039 >>> B = A.translate(c2)
6040 >>> B
6041 [x]
6042 """
6043 return AstVector(
6044 Z3_ast_vector_translate(self.ctx.ref(), self.vector, other_ctx.ref()),
6045 ctx=other_ctx,
6046 )
6047
Z3_ast_vector Z3_API Z3_ast_vector_translate(Z3_context s, Z3_ast_vector v, Z3_context t)
Translate the AST vector v from context s into an AST vector in context t.

Referenced by __copy__(), FuncInterp.__copy__(), ModelRef.__copy__(), __deepcopy__(), FuncInterp.__deepcopy__(), and ModelRef.__deepcopy__().

Field Documentation

◆ ctx

◆ vector

vector = None

Definition at line 5912 of file z3py.py.

Referenced by __del__(), __getitem__(), __len__(), __setitem__(), push(), resize(), sexpr(), and translate().