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Add a .data pointer on ArrayBuffers for convenience, see #291

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This commit is contained in:
dcodeIO 2018-10-03 01:06:48 +02:00
parent b7e7be20cf
commit db0e82fbc3
13 changed files with 89 additions and 31 deletions
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2
dist/asc.js vendored
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2
dist/asc.js.map vendored
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File diff suppressed because one or more lines are too long

3
std/assembly/arraybuffer.ts
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@ -9,6 +9,9 @@ export class ArrayBuffer {
readonly byteLength: i32; // capped to [0, MAX_LENGTH]
// @unsafe
get data(): usize { return changetype<usize>(this) + HEADER_SIZE; }
constructor(length: i32, unsafe: bool = false) {
if (<u32>length > <u32>MAX_BLENGTH) throw new RangeError("Invalid array buffer length");
var buffer = allocateUnsafe(length);

2
std/assembly/index.d.ts vendored
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@ -372,6 +372,8 @@ declare namespace table {
declare class ArrayBuffer {
/** The size, in bytes, of the array. */
readonly byteLength: i32;
/** Unsafe pointer to the start of the data in memory. */
readonly data: usize;
/** Constructs a new array buffer of the given length in bytes. */
constructor(length: i32, unsafe?: bool);
/** Returns a copy of this array buffer's bytes from begin, inclusive, up to end, exclusive. */

47
tests/compiler/std/arraybuffer.optimized.wat
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@ -2276,7 +2276,13 @@
(get_local $2)
)
)
(func $start (; 10 ;) (; has Stack IR ;) (type $v)
(func $~lib/arraybuffer/ArrayBuffer#get:data (; 10 ;) (; has Stack IR ;) (type $ii) (param $0 i32) (result i32)
(i32.add
(get_local $0)
(i32.const 8)
)
)
(func $start (; 11 ;) (; has Stack IR ;) (type $v)
(set_global $~lib/allocator/arena/startOffset
(i32.const 160)
)
@ -2329,6 +2335,25 @@
(unreachable)
)
)
(if
(i32.eq
(call $~lib/arraybuffer/ArrayBuffer#get:data
(get_global $std/arraybuffer/sliced)
)
(call $~lib/arraybuffer/ArrayBuffer#get:data
(get_global $std/arraybuffer/buffer)
)
)
(block
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 10)
(i32.const 0)
)
(unreachable)
)
)
(if
(i32.eq
(get_global $std/arraybuffer/sliced)
@ -2338,7 +2363,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 10)
(i32.const 11)
(i32.const 0)
)
(unreachable)
@ -2364,7 +2389,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 14)
(i32.const 15)
(i32.const 0)
)
(unreachable)
@ -2390,7 +2415,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 18)
(i32.const 19)
(i32.const 0)
)
(unreachable)
@ -2414,7 +2439,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 22)
(i32.const 23)
(i32.const 0)
)
(unreachable)
@ -2438,7 +2463,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 26)
(i32.const 27)
(i32.const 0)
)
(unreachable)
@ -2462,7 +2487,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 30)
(i32.const 31)
(i32.const 0)
)
(unreachable)
@ -2486,7 +2511,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 34)
(i32.const 35)
(i32.const 0)
)
(unreachable)
@ -2509,7 +2534,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 38)
(i32.const 39)
(i32.const 0)
)
(unreachable)
@ -2523,14 +2548,14 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 39)
(i32.const 40)
(i32.const 0)
)
(unreachable)
)
)
)
(func $null (; 11 ;) (; has Stack IR ;) (type $v)
(func $null (; 12 ;) (; has Stack IR ;) (type $v)
(nop)
)
)

1
tests/compiler/std/arraybuffer.ts
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@ -7,6 +7,7 @@ assert(buffer.byteLength == 8);
var sliced = buffer.slice();
assert(sliced.byteLength == 8);
assert(sliced.data != buffer.data);
assert(sliced !== buffer);
sliced = buffer.slice(1);

51
tests/compiler/std/arraybuffer.untouched.wat
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@ -558,7 +558,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 8)
(i32.const 13)
(i32.const 16)
(i32.const 40)
)
(unreachable)
@ -2871,7 +2871,13 @@
(get_local $2)
)
)
(func $start (; 10 ;) (type $v)
(func $~lib/arraybuffer/ArrayBuffer#get:data (; 10 ;) (type $ii) (param $0 i32) (result i32)
(i32.add
(get_local $0)
(get_global $~lib/internal/arraybuffer/HEADER_SIZE)
)
)
(func $start (; 11 ;) (type $v)
(set_global $~lib/allocator/arena/startOffset
(i32.and
(i32.add
@ -2944,6 +2950,27 @@
(unreachable)
)
)
(if
(i32.eqz
(i32.ne
(call $~lib/arraybuffer/ArrayBuffer#get:data
(get_global $std/arraybuffer/sliced)
)
(call $~lib/arraybuffer/ArrayBuffer#get:data
(get_global $std/arraybuffer/buffer)
)
)
)
(block
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 10)
(i32.const 0)
)
(unreachable)
)
)
(if
(i32.eqz
(i32.ne
@ -2955,7 +2982,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 10)
(i32.const 11)
(i32.const 0)
)
(unreachable)
@ -2986,7 +3013,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 14)
(i32.const 15)
(i32.const 0)
)
(unreachable)
@ -3017,7 +3044,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 18)
(i32.const 19)
(i32.const 0)
)
(unreachable)
@ -3043,7 +3070,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 22)
(i32.const 23)
(i32.const 0)
)
(unreachable)
@ -3069,7 +3096,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 26)
(i32.const 27)
(i32.const 0)
)
(unreachable)
@ -3095,7 +3122,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 30)
(i32.const 31)
(i32.const 0)
)
(unreachable)
@ -3121,7 +3148,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 34)
(i32.const 35)
(i32.const 0)
)
(unreachable)
@ -3152,7 +3179,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 38)
(i32.const 39)
(i32.const 0)
)
(unreachable)
@ -3169,13 +3196,13 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 120)
(i32.const 39)
(i32.const 40)
(i32.const 0)
)
(unreachable)
)
)
)
(func $null (; 11 ;) (type $v)
(func $null (; 12 ;) (type $v)
)
)

2
tests/compiler/std/map.optimized.wat
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@ -478,7 +478,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 8)
(i32.const 13)
(i32.const 16)
(i32.const 40)
)
(unreachable)

2
tests/compiler/std/map.untouched.wat
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@ -582,7 +582,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 8)
(i32.const 13)
(i32.const 16)
(i32.const 40)
)
(unreachable)

2
tests/compiler/std/set.optimized.wat
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@ -479,7 +479,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 8)
(i32.const 13)
(i32.const 16)
(i32.const 40)
)
(unreachable)

2
tests/compiler/std/set.untouched.wat
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@ -584,7 +584,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 8)
(i32.const 13)
(i32.const 16)
(i32.const 40)
)
(unreachable)

2
tests/compiler/std/symbol.optimized.wat
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@ -499,7 +499,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 56)
(i32.const 13)
(i32.const 16)
(i32.const 40)
)
(unreachable)

2
tests/compiler/std/symbol.untouched.wat
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@ -613,7 +613,7 @@
(call $~lib/env/abort
(i32.const 0)
(i32.const 56)
(i32.const 13)
(i32.const 16)
(i32.const 40)
)
(unreachable)