tor-browser

bigint.js (10882B)

---

// Used to ensure tests will trigger Wasm Jit stub code.
var threshold = 2 * getJitCompilerOptions()["ion.warmup.trigger"] + 10;
function testWithJit(f) {
 for (var i = 0; i < threshold; i++) {
   f();
 }
}

function testRet() {
 var f = wasmEvalText(`(module
   (func (export "f") (result i64) (i64.const 66))
 )`).exports.f;

 testWithJit(() => {
   assertEq(typeof f(), "bigint", "should return a bigint");
   assertEq(f(), 66n, "should return the correct value");
 });
}

function testId() {
 var exports = wasmEvalText(`(module
   (func (export "f") (param i64 i64) (result i64)
     (local.get 0)
   )
   (func (export "f2") (param i64 i64) (result i64)
     (local.get 1)
   )
 )`).exports;
 var f = exports.f;
 var f2 = exports.f2;

 testWithJit(() => {
   assertEq(f(0n, 1n), 0n);
   assertEq(f(-0n, 1n), -0n);
   assertEq(f(123n, 1n), 123n);
   assertEq(f(-123n, 1n), -123n);
   assertEq(f(2n ** 63n, 1n), -(2n ** 63n));
   assertEq(f(2n ** 64n + 123n, 1n), 123n);
   assertEq(f("5", 1n), 5n);
   assertEq(f(true, 1n), 1n);
   assertEq(f(false, 1n), 0n);
   assertEq(f({ toString() { return "5"; }, }, 1n), 5n);
   assertEq(f({ valueOf() { return 5n; }, }, 1n), 5n);

   assertEq(f2(1n, 0n), 0n);
   assertEq(f2(1n, -0n), -0n);
   assertEq(f2(1n, 123n), 123n);
   assertEq(f2(1n, -123n), -123n);
   assertEq(f2(1n, 2n ** 63n), -(2n ** 63n));
   assertEq(f2(1n, 2n ** 64n + 123n), 123n);
   assertEq(f2(1n, "5"), 5n);
   assertEq(f2(1n, true), 1n);
   assertEq(f2(1n, false), 0n);
   assertEq(f2(1n, { toString() { return "5"; }, }), 5n);
   assertEq(f2(1n, { valueOf() { return 5n; }, }), 5n);
 });
}

function testNonBigIntArgs() {
 var f = wasmEvalText(`(module
   (func (export "f") (param i64) (result i64)
     (local.get 0)
   )
 )`).exports.f;

 assertErrorMessage(() => f(5), TypeError, "can't convert 5 to BigInt");
 assertErrorMessage(() => f({ valueOf() { return 5; }, }),
                    TypeError,
                    "can't convert 5 to BigInt");
 assertErrorMessage(() => f(5.3), TypeError, "can't convert 5.3 to BigInt");
 assertErrorMessage(() => f(), TypeError, "can't convert undefined to BigInt");
 assertErrorMessage(
   () => f(undefined),
   TypeError,
   "can't convert undefined to BigInt"
 );
 assertErrorMessage(() => f(null), TypeError, "can't convert null to BigInt");
 assertErrorMessage(
   () => f(Symbol("foo")),
   TypeError,
   'can\'t convert Symbol("foo") to BigInt'
 );
 assertErrorMessage(() => f({}), SyntaxError, "invalid BigInt syntax");
 assertErrorMessage(() => f({ valueof() { return "foo"; }, }),
                    SyntaxError,
                    "invalid BigInt syntax");
 assertErrorMessage(() => f("x"), SyntaxError, "invalid BigInt syntax");
}

function testIdPlus() {
 var f = wasmEvalText(`(module
   (func (export "f") (param i64) (result i64)
     (i64.const 8)
     (local.get 0)
     (i64.add)
   )
 )`).exports.f;

 testWithJit(() => {
   assertEq(f(0n), 0n + 8n);
   assertEq(f(147n), 147n + 8n);
 });
}

// Test functions with many parameters to stress ABI cases. We want to test
// spilled arguments both under and over the Ion call inlining limit.
function testManyArgs() {
 var f1 = wasmEvalText(`(module
   (func (export "f")
     (param i64 i64 i64 i64 i64 i64 i64 i64)
     (result i64)
     (local.get 0)
     (local.get 1)
     (local.get 2)
     (local.get 3)
     (local.get 4)
     (local.get 5)
     (local.get 6)
     (local.get 7)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
   )
 )`).exports.f;

 var f2 = wasmEvalText(`(module
   (func (export "f")
     (param i64 i64 i64 i64 i64 i64 i64 i64 i64 i64 i64 i64 i64 i64)
     (result i64)
     (local.get 0)
     (local.get 1)
     (local.get 2)
     (local.get 3)
     (local.get 4)
     (local.get 5)
     (local.get 6)
     (local.get 7)
     (local.get 8)
     (local.get 9)
     (local.get 10)
     (local.get 11)
     (local.get 12)
     (local.get 13)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
     (i64.add)
   )
 )`).exports.f;

 testWithJit(() => {
   assertEq(f1(1n, 1n, 1n, 1n, 1n, 1n, 1n, 1n), 8n);
   assertEq(f2(1n, 1n, 1n, 1n, 1n, 1n, 1n, 1n, 1n, 1n, 1n, 1n, 1n, 1n), 14n);
 });
}

// Test import and re-export.
function testImportExport() {
 var f1 = wasmEvalText(
   `(module
     (import "i64" "func" (func (param i64)))
     (export "f" (func 0))
   )`,
   {
     i64: {
       func(b) {
         assertEq(b, 42n);
       },
     },
   }
 ).exports.f;

 var f2 = wasmEvalText(
   `(module
     (import "i64" "func" (func (param i64) (result i64)))
     (export "f" (func 0))
   )`,
   {
     i64: {
       func(n) {
         return n + 1n;
       },
     },
   }
 ).exports.f;

 var f3 = wasmEvalText(
   `(module
     (import "" "i64" (func $i64 (param i64) (result i64)))
     (func (export "f") (param i64) (result i64)
       (local.get 0)
       (call $i64))
   )`,
   {
     "": {
       i64: n => {
         return n + 1n;
       },
     },
   }
 ).exports.f;

 var f4 = wasmEvalText(
   `(module
     (import "i64" "func" (func (result i64)))
     (export "f" (func 0))
   )`,
   { i64: { func() {} } }
 ).exports.f;

 testWithJit(() => {
   assertEq(f1(42n), undefined);
   assertEq(f2(42n), 43n);
   assertEq(f3(42n), 43n);
   assertErrorMessage(() => f4(42), TypeError, "can't convert undefined to BigInt");
 });
}

// Test that a mixture of I64 and other argument types works.
function testMixedArgs() {
 var f = wasmEvalText(`(module
   (func (export "f")
     (param i64 f32 f64 i32 i64)
     (result i64)
     (local.get 1)
     (i64.trunc_f32_s)
     (local.get 2)
     (i64.trunc_f64_s)
     (i64.add)
     (local.get 3)
     (i64.extend_i32_u)
     (i64.add)
     (local.get 0)
     (i64.add)
     (local.get 4)
     (i64.add)
   )
 )`).exports.f;

 testWithJit(() => {
   assertEq(f(1n, 1.3, 1.7, 1, 1n), 5n);
 });
}

function testGlobalImport() {
 var exports = wasmEvalText(
   `(module
     (import "g" "a" (global $a i64))
     (import "g" "b" (global $b i64))
     (import "g" "c" (global $c i64))

     (export "a" (global $a))
     (export "b" (global $b))
     (export "c" (global $c))
   )`,
   { g: { a: 1n, b: 2n ** 63n, c: -100n } }
 ).exports;

 testWithJit(() => {
   assertEq(exports.a.value, 1n);
   assertEq(exports.b.value, -(2n ** 63n));
   assertEq(exports.c.value, -100n);
 });
}

function testMutableGlobalImport() {
 var exports = wasmEvalText(
   `(module
     (import "g" "a" (global $a (mut i64)))
     (import "g" "b" (global $b (mut i64)))

     (export "a" (global $a))
     (export "b" (global $b))
   )`,
   {
     g: {
       a: new WebAssembly.Global({ value: "i64", mutable: true }, 1n),
       b: new WebAssembly.Global({ value: "i64", mutable: true }, "2"),
     },
   }
 ).exports;

 testWithJit(() => {
   assertEq(exports.a.value, 1n);
   assertEq(exports.b.value, 2n);
 });
}

function testMutableGlobalImportLiteral() {
 assertErrorMessage(
   () =>
     wasmEvalText(
       `(module
         (import "g" "a" (global $a (mut i64)))
       )`,
       { g: { a: 1n } }
     ),
   WebAssembly.LinkError,
   "imported global mutability mismatch"
 );
}

function testGlobalBadImportLiteral() {
 assertErrorMessage(
   () =>
     wasmEvalText(
       `(module
         (import "g" "a" (global $a i64))
         (export "a" (global $a))
       )`,
       { g: { a: 1 } }
     ),
   WebAssembly.LinkError,
   "import object field 'a' is not a BigInt"
 );

 assertErrorMessage(
   () =>
     wasmEvalText(
       `(module
         (import "g" "a" (global $a i64))
         (export "a" (global $a))
       )`,
       { g: { a: "foo" } }
     ),
   WebAssembly.LinkError,
   "import object field 'a' is not a BigInt"
 );
}

// This exercises error code paths that were added due to BigInt/I64
// conversion, though the test does not directly deal with I64 types.
function testGlobalBadImportNumber() {
 assertErrorMessage(
   () =>
     wasmEvalText(
       `(module
         (import "g" "a" (global $a i32))
         (export "a" (global $a))
       )`,
       { g: { a: 1n } }
     ),
   WebAssembly.LinkError,
   "import object field 'a' is not a Number"
 );

 assertErrorMessage(
   () =>
     wasmEvalText(
       `(module
         (import "g" "a" (global $a i32))
         (export "a" (global $a))
       )`,
       { g: { a: "foo" } }
     ),
   WebAssembly.LinkError,
   "import object field 'a' is not a Number"
 );
}

function testI64Global() {
 var global = new WebAssembly.Global({ value: "i64", mutable: true });

 assertEq(global.value, 0n); // initial value

 global.value = 123n;
 assertEq(global.value, 123n);

 global.value = 2n ** 63n;
 assertEq(global.value, -(2n ** 63n));

 global.value = "123";
 assertEq(global.value, 123n);
}

function testI64GlobalValueOf() {
 var argument = { value: "i64" };

 // as literal
 var global = new WebAssembly.Global(argument, {
   valueOf() {
     return 123n;
   },
 });
 assertEq(global.value, 123n);

 // as string
 var global2 = new WebAssembly.Global(argument, {
   valueOf() {
     return "123";
   },
 });
 assertEq(global.value, 123n);
}

function testGlobalI64ValueWrongType() {
 var argument = { value: "i64" };
 assertErrorMessage(
   () => new WebAssembly.Global(argument, 666),
   TypeError,
   "can't convert 666 to BigInt"
 );
 assertErrorMessage(
   () => new WebAssembly.Global(argument, "foo"),
   SyntaxError,
   "invalid BigInt syntax"
 );
 assertErrorMessage(
   () =>
     new WebAssembly.Global(argument, {
       valueOf() {
         return 5;
       },
     }),
   TypeError,
   "can't convert 5 to BigInt"
 );
}

function testGlobalI64SetWrongType() {
 var global = new WebAssembly.Global({ value: "i64", mutable: true });
 assertErrorMessage(() => (global.value = 1), TypeError, "can't convert 1 to BigInt");
 assertErrorMessage(
   () => (global.value = "foo"),
   SyntaxError,
   "invalid BigInt syntax"
 );
 assertErrorMessage(
   () =>
     (global.value = {
       valueOf() {
         return 5;
       },
     }),
   TypeError,
   "can't convert 5 to BigInt"
 );
}

testRet();
testId();
testIdPlus();
testNonBigIntArgs();
testManyArgs();
testImportExport();
testMixedArgs();
testGlobalImport();
testMutableGlobalImport();
testMutableGlobalImportLiteral();
testGlobalBadImportLiteral();
testGlobalBadImportNumber();
testI64Global();
testI64GlobalValueOf();
testGlobalI64ValueWrongType();
testGlobalI64SetWrongType();