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z3/src/api/java/Constructor.java
Addison Crump 3bca1fbcd8
Java type generics (#4832)
* Generify, needs some testing and review

* Remove unnecessary change

* Whoops, ? capture that type

* Misread the docs, whoops

* More permissible arithmetic operations

* Implement believed Optimize generics

* Missed a few generics

* More permissible expr for arrays in parameters

* More permissible expr for bitvecs in parameters

* More permissible expr for bools in parameters

* More permissible expr for fps in parameters

* More permissible expr for fprms in parameters

* More permissible expr for ints in parameters

* More permissible expr for reals in parameters

* Undo breaking name conflict due to type erasure; see notes

* Whoops, fix typing of ReExpr

* Sort corrections for Re, Seq

* More permissible expr for regular expressions in parameters

* Fix name conflict between sequences and regular expressions; see notes

* Minor typo, big implications!

* Make Constructor consistent, associate captured types with other unknown capture types for datatype consistency

* More expressive; outputs of multiple datatype definitions are only known to be sort, not capture, and Constructor.of should make a capture

* Be less dumb and just type it a little differently

* Update examples, make sure to type Expr and FuncDecl sort returns

* General fixups

* Downgrade java version, make it only for the generic support, remove var and Expr[]::new construction

* Turns out Java 8 hadn't figured out how to do stream generics yet. Didn't even show up in my IDE, weird
2020-11-30 10:04:54 -08:00

118 lines
3.3 KiB
Java

/**
Copyright (c) 2012-2014 Microsoft Corporation
Module Name:
Constructor.java
Abstract:
Author:
@author Christoph Wintersteiger (cwinter) 2012-03-15
Notes:
**/
package com.microsoft.z3;
/**
* Constructors are used for datatype sorts.
**/
public class Constructor<R> extends Z3Object {
private final int n;
Constructor(Context ctx, int n, long nativeObj) {
super(ctx, nativeObj);
this.n = n;
}
/**
* The number of fields of the constructor.
* @throws Z3Exception
* @throws Z3Exception on error
* @return an int
**/
public int getNumFields()
{
return n;
}
/**
* The function declaration of the constructor.
* @throws Z3Exception
* @throws Z3Exception on error
**/
public FuncDecl<DatatypeSort<R>> ConstructorDecl()
{
Native.LongPtr constructor = new Native.LongPtr();
Native.LongPtr tester = new Native.LongPtr();
long[] accessors = new long[n];
Native.queryConstructor(getContext().nCtx(), getNativeObject(), n, constructor, tester, accessors);
return new FuncDecl<>(getContext(), constructor.value);
}
/**
* The function declaration of the tester.
* @throws Z3Exception
* @throws Z3Exception on error
**/
public FuncDecl<BoolSort> getTesterDecl()
{
Native.LongPtr constructor = new Native.LongPtr();
Native.LongPtr tester = new Native.LongPtr();
long[] accessors = new long[n];
Native.queryConstructor(getContext().nCtx(), getNativeObject(), n, constructor, tester, accessors);
return new FuncDecl<>(getContext(), tester.value);
}
/**
* The function declarations of the accessors
* @throws Z3Exception
* @throws Z3Exception on error
**/
public FuncDecl<?>[] getAccessorDecls()
{
Native.LongPtr constructor = new Native.LongPtr();
Native.LongPtr tester = new Native.LongPtr();
long[] accessors = new long[n];
Native.queryConstructor(getContext().nCtx(), getNativeObject(), n, constructor, tester, accessors);
FuncDecl<?>[] t = new FuncDecl[n];
for (int i = 0; i < n; i++)
t[i] = new FuncDecl<>(getContext(), accessors[i]);
return t;
}
@Override
void incRef() {
// Datatype constructors are not reference counted.
}
@Override
void addToReferenceQueue() {
getContext().getConstructorDRQ().storeReference(getContext(), this);
}
static <R> Constructor<R> of(Context ctx, Symbol name, Symbol recognizer,
Symbol[] fieldNames, Sort[] sorts, int[] sortRefs) {
int n = AST.arrayLength(fieldNames);
if (n != AST.arrayLength(sorts))
throw new Z3Exception(
"Number of field names does not match number of sorts");
if (sortRefs != null && sortRefs.length != n)
throw new Z3Exception(
"Number of field names does not match number of sort refs");
if (sortRefs == null)
sortRefs = new int[n];
long nativeObj = Native.mkConstructor(ctx.nCtx(), name.getNativeObject(),
recognizer.getNativeObject(), n, Symbol.arrayToNative(fieldNames),
Sort.arrayToNative(sorts), sortRefs);
return new Constructor<>(ctx, n, nativeObj);
}
}