tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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defaultable.js (1493B)

      1 let defaultableTypes = [
      2  ['i32', 'i32.const 0 i32.eq'],
      3  ['i64', 'i64.const 0 i64.eq'],
      4  ['f32', 'f32.const 0 f32.eq'],
      5  ['f64', 'f64.const 0 f64.eq'],
      6  ['anyref', 'ref.is_null'],
      7  ['funcref', 'ref.is_null'],
      8  ['externref', 'ref.is_null'],
      9  ['(ref null $type)', 'ref.is_null'],
     10 ];
     11 if (wasmSimdEnabled()) {
     12  defaultableTypes.push(['v128', 'v128.const i64x2 0 0 i8x16.eq v128.any_true']);
     13 }
     14 
     15 for (let [type, isDefault] of defaultableTypes) {
     16  let {testStruct, testArray} = wasmEvalText(`(module
     17    (type $type (struct))
     18    (type $struct (struct (field ${type})))
     19    (type $array (array ${type}))
     20 
     21    (func (export "testStruct") (result i32)
     22      (struct.get $struct 0
     23            struct.new_default $struct)
     24      ${isDefault}
     25    )
     26    (func (export "testArray") (result i32)
     27      (array.get $array
     28        (array.new_default $array i32.const 1)
     29        i32.const 0
     30      )
     31      ${isDefault}
     32    )
     33  )`).exports;
     34 
     35  assertEq(testStruct(), 1);
     36  assertEq(testArray(), 1);
     37 }
     38 
     39 let nonDefaultableTypes = ['(ref any)', '(ref func)', '(ref extern)', '(ref $type)'];
     40 for (let type of nonDefaultableTypes) {
     41  wasmFailValidateText(`(module
     42    (type $type (struct))
     43    (type $struct (struct (field ${type})))
     44    (func
     45      struct.new_default $struct
     46      drop
     47    )
     48  )`, /defaultable/);
     49  wasmFailValidateText(`(module
     50    (type $type (struct))
     51    (type $array (array ${type}))
     52    (func
     53      i32.const 1
     54      array.new_default $array
     55      drop
     56    )
     57  )`, /defaultable/);
     58 }