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DefaultValue(externref) absurdity
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| function test(msg, f) { | |
| try { | |
| f(); | |
| console.log(`${msg}: ok`); | |
| } catch (e) { | |
| console.log(`${msg}: fail (${e})`); | |
| } | |
| } | |
| function printTable(t) { | |
| let result = "["; | |
| for (let i = 0; i < t.length; i++) { | |
| if (i > 0) { | |
| result += ", "; | |
| } | |
| result += t.get(i); | |
| } | |
| result += "]"; | |
| console.log(result); | |
| } | |
| // const bytes = wasmTextToBinary(`(module | |
| // (table $f (export "f") 0 funcref) | |
| // (table $e (export "e") 0 externref) | |
| // (func (export "growF") (result i32) | |
| // (table.grow $f (ref.null func) (i32.const 1)) | |
| // ) | |
| // (func (export "growE") (result i32) | |
| // (table.grow $e (ref.null extern) (i32.const 1)) | |
| // ) | |
| // )`); | |
| // console.log(bytes); | |
| const bytes = new Uint8Array([ | |
| 0,97,115,109,1,0,0,0,1,5,1,96,0,1,127,3,3,2,0,0,4,7,2,112,0,0,111,0,0,7,25,4,1,102,1,0,1,101,1,1,5,103,114,111,119,70,0,0,5,103,114,111,119,69,0,1,10,21,2,9,0,208,112,65,1,252,15,0,11,9,0,208,111,65,1,252,15,1,11,0,14,4,110,97,109,101,5,7,2,0,1,102,1,1,101 | |
| ]); | |
| const { f, e, growF, growE } = new WebAssembly.Instance( | |
| new WebAssembly.Module(bytes), | |
| ).exports; | |
| console.log("===== funcref ====="); | |
| test("f.grow(1)", () => f.grow(1)); | |
| test("f.grow(1, null)", () => f.grow(1, null)); | |
| test("f.grow(1, undefined)", () => f.grow(1, undefined)); | |
| test("(table.grow $f)", () => growF()); | |
| printTable(f); | |
| console.log("\n===== externref ====="); | |
| test("e.grow(1)", () => e.grow(1)); | |
| test("e.grow(1, null)", () => e.grow(1, null)); | |
| test("e.grow(1, undefined)", () => e.grow(1, undefined)); | |
| test("(table.grow $e)", () => growE()); | |
| printTable(e); |
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| <!DOCTYPE html> | |
| <head> | |
| <script src="growtable.js"></script> | |
| </head> | |
| <body> | |
| Open yer console | |
| </body> |
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| function test(msg, f) { | |
| try { | |
| f(); | |
| console.log(`${msg}: ok`); | |
| } catch (e) { | |
| console.log(`${msg}: fail (${e})`); | |
| } | |
| } | |
| function printTable(t) { | |
| let result = "["; | |
| for (let i = 0; i < t.length; i++) { | |
| if (i > 0) { | |
| result += ", "; | |
| } | |
| result += t.get(i); | |
| } | |
| result += "]"; | |
| console.log(result); | |
| } | |
| // const bytes = wasmTextToBinary(`(module | |
| // (table $f (export "f") 0 funcref) | |
| // (table $e (export "e") 0 externref) | |
| // (table $a (export "a") 0 anyref) | |
| // (table $s (export "s") 0 structref) | |
| // (func (export "growF") (result i32) | |
| // (table.grow $f (ref.null func) (i32.const 1)) | |
| // ) | |
| // (func (export "growE") (result i32) | |
| // (table.grow $e (ref.null extern) (i32.const 1)) | |
| // ) | |
| // (func (export "growA") (result i32) | |
| // (table.grow $a (ref.null any) (i32.const 1)) | |
| // ) | |
| // (func (export "growS") (result i32) | |
| // (table.grow $s (ref.null struct) (i32.const 1)) | |
| // ) | |
| // )`); | |
| // console.log(bytes); | |
| const bytes = new Uint8Array([ | |
| 0,97,115,109,1,0,0,0,1,5,1,96,0,1,127,3,5,4,0,0,0,0,4,14,4,112,0,0,111,0,0,99,110,0,0,107,0,0,7,49,8,1,102,1,0,1,101,1,1,1,97,1,2,1,115,1,3,5,103,114,111,119,70,0,0,5,103,114,111,119,69,0,1,5,103,114,111,119,65,0,2,5,103,114,111,119,83,0,3,10,41,4,9,0,208,112,65,1,252,15,0,11,9,0,208,111,65,1,252,15,1,11,9,0,208,110,65,1,252,15,2,11,9,0,208,107,65,1,252,15,3,11,0,20,4,110,97,109,101,5,13,4,0,1,102,1,1,101,2,1,97,3,1,115 | |
| ]); | |
| const { f, e, a, s, growF, growE, growA, growS } = new WebAssembly.Instance( | |
| new WebAssembly.Module(bytes), | |
| ).exports; | |
| console.log("===== funcref ====="); | |
| test("f.grow(1)", () => f.grow(1)); | |
| test("f.grow(1, null)", () => f.grow(1, null)); | |
| test("f.grow(1, undefined)", () => f.grow(1, undefined)); | |
| test("(table.grow $f)", () => growF()); | |
| printTable(f); | |
| console.log("\n===== externref ====="); | |
| test("e.grow(1)", () => e.grow(1)); | |
| test("e.grow(1, null)", () => e.grow(1, null)); | |
| test("e.grow(1, undefined)", () => e.grow(1, undefined)); | |
| test("(table.grow $e)", () => growE()); | |
| printTable(e); | |
| console.log("\n===== anyref ====="); | |
| test("a.grow(1)", () => a.grow(1)); | |
| test("a.grow(1, null)", () => a.grow(1, null)); | |
| test("a.grow(1, undefined)", () => a.grow(1, undefined)); | |
| test("(table.grow $a)", () => growA()); | |
| printTable(a); | |
| console.log("\n===== structref ====="); | |
| test("s.grow(1)", () => s.grow(1)); | |
| test("s.grow(1, null)", () => s.grow(1, null)); | |
| test("s.grow(1, undefined)", () => s.grow(1, undefined)); | |
| test("(table.grow $s)", () => growS()); | |
| printTable(s); |
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