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js: Add pseudo-boolean high-level functions (#7426)

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* js: Add pseudo-boolean high-level functions

* Add check for arg length
This commit is contained in:
Jonas Jongejan 2024-11-02 15:34:15 -04:00 • committed by GitHub
parent 91dc02d862
commit 604714ba40
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3 changed files with 76 additions and 0 deletions
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13
src/api/js/src/high-level/high-level.test.ts
View file

@ -161,6 +161,19 @@ describe('high-level', () => {
});
describe('booleans', () => {
it('can use pseudo-boolean constraints', async () => {
const { Bool, PbEq, Solver } = api.Context('main');
const x = Bool.const('x');
const y = Bool.const('y');
const solver = new Solver();
solver.add(PbEq([x, y], [1, 1], 1));
expect(await solver.check()).toStrictEqual('sat');
solver.add(x.eq(y));
expect(await solver.check()).toStrictEqual('unsat');
});
it("proves De Morgan's Law", async () => {
const { Bool, Not, And, Eq, Or } = api.Context('main');
const [x, y] = [Bool.const('x'), Bool.const('y')];

54
src/api/js/src/high-level/high-level.ts
View file

@ -961,6 +961,57 @@ export function createApi(Z3: Z3Core): Z3HighLevel {
}
}
function PbEq(args: [Bool<Name>, ...Bool<Name>[]], coeffs: [number, ...number[]], k: number): Bool<Name> {
_assertContext(...args);
if (args.length !== coeffs.length) {
throw new Error('Number of arguments and coefficients must match');
}
return new BoolImpl(
check(
Z3.mk_pbeq(
contextPtr,
args.map(arg => arg.ast),
coeffs,
k,
),
),
);
}
function PbGe(args: [Bool<Name>, ...Bool<Name>[]], coeffs: [number, ...number[]], k: number): Bool<Name> {
_assertContext(...args);
if (args.length !== coeffs.length) {
throw new Error('Number of arguments and coefficients must match');
}
return new BoolImpl(
check(
Z3.mk_pbge(
contextPtr,
args.map(arg => arg.ast),
coeffs,
k,
),
),
);
}
function PbLe(args: [Bool<Name>, ...Bool<Name>[]], coeffs: [number, ...number[]], k: number): Bool<Name> {
_assertContext(...args);
if (args.length !== coeffs.length) {
throw new Error('Number of arguments and coefficients must match');
}
return new BoolImpl(
check(
Z3.mk_pble(
contextPtr,
args.map(arg => arg.ast),
coeffs,
k,
),
),
);
}
function ForAll<QVarSorts extends NonEmptySortArray<Name>>(
quantifiers: ArrayIndexType<Name, QVarSorts>,
body: Bool<Name>,
@ -2883,6 +2934,9 @@ export function createApi(Z3: Z3Core): Z3HighLevel {
Not,
And,
Or,
PbEq,
PbGe,
PbLe,
ForAll,
Exists,
Lambda,

9
src/api/js/src/high-level/types.ts
View file

@ -429,6 +429,15 @@ export interface Context<Name extends string = 'main'> {
/** @category Operations */
Or(...args: Probe<Name>[]): Probe<Name>;
/** @category Operations */
PbEq(args: [Bool<Name>, ...Bool<Name>[]], coeffs: [number, ...number[]], k: number): Bool<Name>;
/** @category Operations */
PbGe(args: [Bool<Name>, ...Bool<Name>[]], coeffs: [number, ...number[]], k: number): Bool<Name>;
/** @category Operations */
PbLe(args: [Bool<Name>, ...Bool<Name>[]], coeffs: [number, ...number[]], k: number): Bool<Name>;
// Quantifiers
/** @category Operations */