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z3-z3-4.12.6.src.api.java.Quantifier Maven / Gradle / Ivy
/**
Copyright (c) 2012-2014 Microsoft Corporation
Module Name:
Quantifier.java
Abstract:
Author:
@author Christoph Wintersteiger (cwinter) 2012-03-15
Notes:
**/
package com.microsoft.z3;
import com.microsoft.z3.enumerations.Z3_ast_kind;
/**
* Quantifier expressions.
**/
public class Quantifier extends BoolExpr
{
/**
* Indicates whether the quantifier is universal.
**/
public boolean isUniversal()
{
return Native.isQuantifierForall(getContext().nCtx(), getNativeObject());
}
/**
* Indicates whether the quantifier is existential.
**/
public boolean isExistential()
{
return Native.isQuantifierExists(getContext().nCtx(), getNativeObject());
}
/**
* The weight of the quantifier.
**/
public int getWeight()
{
return Native.getQuantifierWeight(getContext().nCtx(), getNativeObject());
}
/**
* The number of patterns.
**/
public int getNumPatterns()
{
return Native
.getQuantifierNumPatterns(getContext().nCtx(), getNativeObject());
}
/**
* The patterns.
*
* @throws Z3Exception
**/
public Pattern[] getPatterns()
{
int n = getNumPatterns();
Pattern[] res = new Pattern[n];
for (int i = 0; i < n; i++)
res[i] = new Pattern(getContext(), Native.getQuantifierPatternAst(
getContext().nCtx(), getNativeObject(), i));
return res;
}
/**
* The number of no-patterns.
**/
public int getNumNoPatterns()
{
return Native.getQuantifierNumNoPatterns(getContext().nCtx(),
getNativeObject());
}
/**
* The no-patterns.
*
* @throws Z3Exception
**/
public Pattern[] getNoPatterns()
{
int n = getNumNoPatterns();
Pattern[] res = new Pattern[n];
for (int i = 0; i < n; i++)
res[i] = new Pattern(getContext(), Native.getQuantifierNoPatternAst(
getContext().nCtx(), getNativeObject(), i));
return res;
}
/**
* The number of bound variables.
**/
public int getNumBound()
{
return Native.getQuantifierNumBound(getContext().nCtx(), getNativeObject());
}
/**
* The symbols for the bound variables.
*
* @throws Z3Exception
**/
public Symbol[] getBoundVariableNames()
{
int n = getNumBound();
Symbol[] res = new Symbol[n];
for (int i = 0; i < n; i++)
res[i] = Symbol.create(getContext(), Native.getQuantifierBoundName(
getContext().nCtx(), getNativeObject(), i));
return res;
}
/**
* The sorts of the bound variables.
*
* @throws Z3Exception
**/
public Sort[] getBoundVariableSorts()
{
int n = getNumBound();
Sort[] res = new Sort[n];
for (int i = 0; i < n; i++)
res[i] = Sort.create(getContext(), Native.getQuantifierBoundSort(
getContext().nCtx(), getNativeObject(), i));
return res;
}
/**
* The body of the quantifier.
*
* @throws Z3Exception
**/
public BoolExpr getBody()
{
return (BoolExpr) Expr.create(getContext(), Native.getQuantifierBody(getContext()
.nCtx(), getNativeObject()));
}
/**
* Translates (copies) the quantifier to the Context {@code ctx}.
*
* @param ctx A context
*
* @return A copy of the quantifier which is associated with {@code ctx}
* @throws Z3Exception on error
**/
public Quantifier translate(Context ctx)
{
return (Quantifier) super.translate(ctx);
}
/**
* Create a quantified expression.
*
* @param ctx Context to create the quantifier on.
* @param isForall Quantifier type.
* @param sorts Sorts of bound variables.
* @param names Names of bound variables
* @param body Body of quantifier
* @param weight Weight used to indicate priority for quantifier instantiation
* @param patterns Nullable patterns
* @param noPatterns Nullable noPatterns
* @param quantifierID Nullable quantifierID
* @param skolemID Nullable skolemID
*/
public static Quantifier of(
Context ctx, boolean isForall, Sort[] sorts, Symbol[] names,
Expr body, int weight, Pattern[] patterns, Expr[] noPatterns,
Symbol quantifierID, Symbol skolemID) {
ctx.checkContextMatch(patterns);
ctx.checkContextMatch(noPatterns);
ctx.checkContextMatch(sorts);
ctx.checkContextMatch(names);
ctx.checkContextMatch(body);
if (sorts.length != names.length) {
throw new Z3Exception(
"Number of sorts does not match number of names");
}
long nativeObj;
if (noPatterns == null && quantifierID == null && skolemID == null) {
nativeObj = Native.mkQuantifier(ctx.nCtx(), (isForall), weight, AST.arrayLength(patterns), AST
.arrayToNative(patterns), AST.arrayLength(sorts), AST
.arrayToNative(sorts), Symbol.arrayToNative(names), body
.getNativeObject());
} else {
nativeObj = Native.mkQuantifierEx(ctx.nCtx(),
(isForall), weight, AST.getNativeObject(quantifierID),
AST.getNativeObject(skolemID),
AST.arrayLength(patterns), AST.arrayToNative(patterns),
AST.arrayLength(noPatterns), AST.arrayToNative(noPatterns),
AST.arrayLength(sorts), AST.arrayToNative(sorts),
Symbol.arrayToNative(names),
body.getNativeObject());
}
return new Quantifier(ctx, nativeObj);
}
/**
* @param ctx Context to create the quantifier on.
* @param isForall Quantifier type.
* @param bound Bound variables.
* @param body Body of the quantifier.
* @param weight Weight.
* @param patterns Nullable array of patterns.
* @param noPatterns Nullable array of noPatterns.
* @param quantifierID Nullable quantifier identifier.
* @param skolemID Nullable skolem identifier.
*/
public static Quantifier of(Context ctx, boolean isForall, Expr[] bound, Expr body,
int weight, Pattern[] patterns, Expr[] noPatterns,
Symbol quantifierID, Symbol skolemID) {
ctx.checkContextMatch(noPatterns);
ctx.checkContextMatch(patterns);
ctx.checkContextMatch(body);
long nativeObj;
if (noPatterns == null && quantifierID == null && skolemID == null) {
nativeObj = Native.mkQuantifierConst(ctx.nCtx(),
isForall, weight, AST.arrayLength(bound),
AST.arrayToNative(bound), AST.arrayLength(patterns),
AST.arrayToNative(patterns), body.getNativeObject());
} else {
nativeObj = Native.mkQuantifierConstEx(ctx.nCtx(),
isForall, weight,
AST.getNativeObject(quantifierID),
AST.getNativeObject(skolemID), AST.arrayLength(bound),
AST.arrayToNative(bound), AST.arrayLength(patterns),
AST.arrayToNative(patterns), AST.arrayLength(noPatterns),
AST.arrayToNative(noPatterns), body.getNativeObject());
}
return new Quantifier(ctx, nativeObj);
}
Quantifier(Context ctx, long obj)
{
super(ctx, obj);
}
@Override
void checkNativeObject(long obj) {
if (Native.getAstKind(getContext().nCtx(), obj) != Z3_ast_kind.Z3_QUANTIFIER_AST
.toInt()) {
throw new Z3Exception("Underlying object is not a quantifier");
}
super.checkNativeObject(obj);
}
}
