mirror of
https://github.com/Z3Prover/z3
synced 2025-04-12 20:18:18 +00:00
Replacing finalizers with PhantomReferences, required quite a lot of changes to the codebase.
184 lines
4.5 KiB
Java
184 lines
4.5 KiB
Java
/**
|
|
Copyright (c) 2012-2014 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
FuncInterp.java
|
|
|
|
Abstract:
|
|
|
|
Author:
|
|
|
|
@author Christoph Wintersteiger (cwinter) 2012-03-15
|
|
|
|
Notes:
|
|
|
|
**/
|
|
|
|
package com.microsoft.z3;
|
|
|
|
/**
|
|
* A function interpretation is represented as a finite map and an 'else' value.
|
|
* Each entry in the finite map represents the value of a function given a set
|
|
* of arguments.
|
|
**/
|
|
public class FuncInterp extends Z3Object
|
|
{
|
|
/**
|
|
* An Entry object represents an element in the finite map used to encode a
|
|
* function interpretation.
|
|
**/
|
|
public class Entry extends Z3Object
|
|
{
|
|
/**
|
|
* Return the (symbolic) value of this entry.
|
|
*
|
|
* @throws Z3Exception
|
|
* @throws Z3Exception on error
|
|
**/
|
|
public Expr getValue()
|
|
{
|
|
return Expr.create(getContext(),
|
|
Native.funcEntryGetValue(getContext().nCtx(), getNativeObject()));
|
|
}
|
|
|
|
/**
|
|
* The number of arguments of the entry.
|
|
* @throws Z3Exception on error
|
|
**/
|
|
public int getNumArgs()
|
|
{
|
|
return Native.funcEntryGetNumArgs(getContext().nCtx(), getNativeObject());
|
|
}
|
|
|
|
/**
|
|
* The arguments of the function entry.
|
|
*
|
|
* @throws Z3Exception
|
|
* @throws Z3Exception on error
|
|
**/
|
|
public Expr[] getArgs()
|
|
{
|
|
int n = getNumArgs();
|
|
Expr[] res = new Expr[n];
|
|
for (int i = 0; i < n; i++)
|
|
res[i] = Expr.create(getContext(), Native.funcEntryGetArg(
|
|
getContext().nCtx(), getNativeObject(), i));
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* A string representation of the function entry.
|
|
**/
|
|
@Override
|
|
public String toString()
|
|
{
|
|
int n = getNumArgs();
|
|
String res = "[";
|
|
Expr[] args = getArgs();
|
|
for (int i = 0; i < n; i++)
|
|
res += args[i] + ", ";
|
|
return res + getValue() + "]";
|
|
}
|
|
|
|
Entry(Context ctx, long obj)
|
|
{
|
|
super(ctx, obj);
|
|
}
|
|
|
|
@Override
|
|
void incRef(long o) {
|
|
Native.funcEntryIncRef(getContext().nCtx(), o);;
|
|
getContext().getFuncEntryDRQ().storeReference(getContext(), this);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The number of entries in the function interpretation.
|
|
* @throws Z3Exception on error
|
|
* @return an int
|
|
**/
|
|
public int getNumEntries()
|
|
{
|
|
return Native.funcInterpGetNumEntries(getContext().nCtx(), getNativeObject());
|
|
}
|
|
|
|
/**
|
|
* The entries in the function interpretation
|
|
*
|
|
* @throws Z3Exception
|
|
* @throws Z3Exception on error
|
|
**/
|
|
public Entry[] getEntries()
|
|
{
|
|
int n = getNumEntries();
|
|
Entry[] res = new Entry[n];
|
|
for (int i = 0; i < n; i++)
|
|
res[i] = new Entry(getContext(), Native.funcInterpGetEntry(getContext()
|
|
.nCtx(), getNativeObject(), i));
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* The (symbolic) `else' value of the function interpretation.
|
|
*
|
|
* @throws Z3Exception
|
|
* @throws Z3Exception on error
|
|
* @return an Expr
|
|
**/
|
|
public Expr getElse()
|
|
{
|
|
return Expr.create(getContext(),
|
|
Native.funcInterpGetElse(getContext().nCtx(), getNativeObject()));
|
|
}
|
|
|
|
/**
|
|
* The arity of the function interpretation
|
|
* @throws Z3Exception on error
|
|
* @return an int
|
|
**/
|
|
public int getArity()
|
|
{
|
|
return Native.funcInterpGetArity(getContext().nCtx(), getNativeObject());
|
|
}
|
|
|
|
/**
|
|
* A string representation of the function interpretation.
|
|
**/
|
|
public String toString()
|
|
{
|
|
String res = "";
|
|
res += "[";
|
|
for (Entry e : getEntries())
|
|
{
|
|
int n = e.getNumArgs();
|
|
if (n > 1)
|
|
res += "[";
|
|
Expr[] args = e.getArgs();
|
|
for (int i = 0; i < n; i++)
|
|
{
|
|
if (i != 0)
|
|
res += ", ";
|
|
res += args[i];
|
|
}
|
|
if (n > 1)
|
|
res += "]";
|
|
res += " -> " + e.getValue() + ", ";
|
|
}
|
|
res += "else -> " + getElse();
|
|
res += "]";
|
|
return res;
|
|
}
|
|
|
|
FuncInterp(Context ctx, long obj)
|
|
{
|
|
super(ctx, obj);
|
|
}
|
|
|
|
@Override
|
|
void incRef(long o) {
|
|
Native.funcInterpIncRef(getContext().nCtx(), o);
|
|
getContext().getFuncInterpDRQ().storeReference(getContext(), this);
|
|
}
|
|
}
|