mirror of
https://github.com/tc39/test262.git
synced 2025-10-31 11:44:31 +01:00
e9a5a7f918
* [javascriptcore-test262-automation] changes from git@github.com:WebKit/webkit.git at sha 949e26452cfa153a7f4afe593da97e2fe9e1b706 on Tue Jul 03 2018 14:35:15 GMT-0400 (Eastern Daylight Time)
340 lines
13 KiB
JavaScript
340 lines
13 KiB
JavaScript
/*
|
|
* Copyright (C) 2016 Apple Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
|
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
import * as assert from 'assert.js';
|
|
import * as WASM from 'WASM.js';
|
|
|
|
const _initialAllocationSize = 1024;
|
|
const _growAllocationSize = allocated => allocated * 2;
|
|
|
|
export const varuint32Min = 0;
|
|
export const varint7Min = -0b1000000;
|
|
export const varint7Max = 0b111111;
|
|
export const varuint7Max = 0b1111111;
|
|
export const varuint32Max = ((((1 << 31) >>> 0) - 1) * 2) + 1;
|
|
export const varint32Min = -((1 << 31) >>> 0);
|
|
export const varint32Max = ((1 << 31) - 1) >>> 0;
|
|
export const varBitsMax = 5;
|
|
|
|
const _getterRangeCheck = (llb, at, size) => {
|
|
if (0 > at || at + size > llb._used)
|
|
throw new RangeError(`[${at}, ${at + size}) is out of buffer range [0, ${llb._used})`);
|
|
};
|
|
|
|
const _hexdump = (buf, size) => {
|
|
let s = "";
|
|
const width = 16;
|
|
const base = 16;
|
|
for (let row = 0; row * width < size; ++row) {
|
|
const address = (row * width).toString(base);
|
|
s += "0".repeat(8 - address.length) + address;
|
|
let chars = "";
|
|
for (let col = 0; col !== width; ++col) {
|
|
const idx = row * width + col;
|
|
if (idx < size) {
|
|
const byte = buf[idx];
|
|
const bytestr = byte.toString(base);
|
|
s += " " + (bytestr.length === 1 ? "0" + bytestr : bytestr);
|
|
chars += 0x20 <= byte && byte < 0x7F ? String.fromCharCode(byte) : "·";
|
|
} else {
|
|
s += " ";
|
|
chars += " ";
|
|
}
|
|
}
|
|
s+= " |" + chars + "|\n";
|
|
}
|
|
return s;
|
|
};
|
|
|
|
export default class LowLevelBinary {
|
|
constructor() {
|
|
this._buf = new Uint8Array(_initialAllocationSize);
|
|
this._used = 0;
|
|
}
|
|
|
|
newPatchable(type) { return new PatchableLowLevelBinary(type, this); }
|
|
|
|
// Utilities.
|
|
get() { return this._buf; }
|
|
trim() { this._buf = this._buf.slice(0, this._used); }
|
|
|
|
hexdump() { return _hexdump(this._buf, this._used); }
|
|
_maybeGrow(bytes) {
|
|
const allocated = this._buf.length;
|
|
if (allocated - this._used < bytes) {
|
|
let buf = new Uint8Array(_growAllocationSize(allocated));
|
|
buf.set(this._buf);
|
|
this._buf = buf;
|
|
}
|
|
}
|
|
_push8(v) { this._buf[this._used] = v & 0xFF; this._used += 1; }
|
|
|
|
// Data types.
|
|
uint8(v) {
|
|
if ((v & 0xFF) >>> 0 !== v)
|
|
throw new RangeError(`Invalid uint8 ${v}`);
|
|
this._maybeGrow(1);
|
|
this._push8(v);
|
|
}
|
|
uint16(v) {
|
|
if ((v & 0xFFFF) >>> 0 !== v)
|
|
throw new RangeError(`Invalid uint16 ${v}`);
|
|
this._maybeGrow(2);
|
|
this._push8(v);
|
|
this._push8(v >>> 8);
|
|
}
|
|
uint24(v) {
|
|
if ((v & 0xFFFFFF) >>> 0 !== v)
|
|
throw new RangeError(`Invalid uint24 ${v}`);
|
|
this._maybeGrow(3);
|
|
this._push8(v);
|
|
this._push8(v >>> 8);
|
|
this._push8(v >>> 16);
|
|
}
|
|
uint32(v) {
|
|
if ((v & 0xFFFFFFFF) >>> 0 !== v)
|
|
throw new RangeError(`Invalid uint32 ${v}`);
|
|
this._maybeGrow(4);
|
|
this._push8(v);
|
|
this._push8(v >>> 8);
|
|
this._push8(v >>> 16);
|
|
this._push8(v >>> 24);
|
|
}
|
|
float(v) {
|
|
if (isNaN(v))
|
|
throw new RangeError("unimplemented, NaNs");
|
|
// Unfortunately, we cannot just view the actual buffer as a Float32Array since it needs to be 4 byte aligned
|
|
let buffer = new ArrayBuffer(4);
|
|
let floatView = new Float32Array(buffer);
|
|
let int8View = new Uint8Array(buffer);
|
|
floatView[0] = v;
|
|
for (let byte of int8View)
|
|
this._push8(byte);
|
|
}
|
|
|
|
double(v) {
|
|
if (isNaN(v))
|
|
throw new RangeError("unimplemented, NaNs");
|
|
// Unfortunately, we cannot just view the actual buffer as a Float64Array since it needs to be 4 byte aligned
|
|
let buffer = new ArrayBuffer(8);
|
|
let floatView = new Float64Array(buffer);
|
|
let int8View = new Uint8Array(buffer);
|
|
floatView[0] = v;
|
|
for (let byte of int8View)
|
|
this._push8(byte);
|
|
}
|
|
|
|
varuint32(v) {
|
|
assert.isNumber(v);
|
|
if (v < varuint32Min || varuint32Max < v)
|
|
throw new RangeError(`Invalid varuint32 ${v} range is [${varuint32Min}, ${varuint32Max}]`);
|
|
while (v >= 0x80) {
|
|
this.uint8(0x80 | (v & 0x7F));
|
|
v >>>= 7;
|
|
}
|
|
this.uint8(v);
|
|
}
|
|
varint32(v) {
|
|
assert.isNumber(v);
|
|
if (v < varint32Min || varint32Max < v)
|
|
throw new RangeError(`Invalid varint32 ${v} range is [${varint32Min}, ${varint32Max}]`);
|
|
do {
|
|
const b = v & 0x7F;
|
|
v >>= 7;
|
|
if ((v === 0 && ((b & 0x40) === 0)) || (v === -1 && ((b & 0x40) === 0x40))) {
|
|
this.uint8(b & 0x7F);
|
|
break;
|
|
}
|
|
this.uint8(0x80 | b);
|
|
} while (true);
|
|
}
|
|
varuint64(v) {
|
|
assert.isNumber(v);
|
|
if (v < varuint32Min || varuint32Max < v)
|
|
throw new RangeError(`unimplemented: varuint64 larger than 32-bit`);
|
|
this.varuint32(v); // FIXME implement 64-bit var{u}int https://bugs.webkit.org/show_bug.cgi?id=163420
|
|
}
|
|
varint64(v) {
|
|
assert.isNumber(v);
|
|
if (v < varint32Min || varint32Max < v)
|
|
throw new RangeError(`unimplemented: varint64 larger than 32-bit`);
|
|
this.varint32(v); // FIXME implement 64-bit var{u}int https://bugs.webkit.org/show_bug.cgi?id=163420
|
|
}
|
|
varuint1(v) {
|
|
if (v !== 0 && v !== 1)
|
|
throw new RangeError(`Invalid varuint1 ${v} range is [0, 1]`);
|
|
this.varuint32(v);
|
|
}
|
|
varint7(v) {
|
|
if (v < varint7Min || varint7Max < v)
|
|
throw new RangeError(`Invalid varint7 ${v} range is [${varint7Min}, ${varint7Max}]`);
|
|
this.varint32(v);
|
|
}
|
|
varuint7(v) {
|
|
if (v < varuint32Min || varuint7Max < v)
|
|
throw new RangeError(`Invalid varuint7 ${v} range is [${varuint32Min}, ${varuint7Max}]`);
|
|
this.varuint32(v);
|
|
}
|
|
block_type(v) {
|
|
if (!WASM.isValidBlockType(v))
|
|
throw new Error(`Invalid block type ${v}`);
|
|
this.varint7(WASM.typeValue[v]);
|
|
}
|
|
string(str) {
|
|
let patch = this.newPatchable("varuint32");
|
|
for (const char of str) {
|
|
// Encode UTF-8 2003 code points.
|
|
const code = char.codePointAt();
|
|
if (code <= 0x007F) {
|
|
const utf8 = code;
|
|
patch.uint8(utf8);
|
|
} else if (code <= 0x07FF) {
|
|
const utf8 = 0x80C0 | ((code & 0x7C0) >> 6) | ((code & 0x3F) << 8);
|
|
patch.uint16(utf8);
|
|
} else if (code <= 0xFFFF) {
|
|
const utf8 = 0x8080E0 | ((code & 0xF000) >> 12) | ((code & 0xFC0) << 2) | ((code & 0x3F) << 16);
|
|
patch.uint24(utf8);
|
|
} else if (code <= 0x10FFFF) {
|
|
const utf8 = (0x808080F0 | ((code & 0x1C0000) >> 18) | ((code & 0x3F000) >> 4) | ((code & 0xFC0) << 10) | ((code & 0x3F) << 24)) >>> 0;
|
|
patch.uint32(utf8);
|
|
} else
|
|
throw new Error(`Unexpectedly large UTF-8 character code point '${char}' 0x${code.toString(16)}`);
|
|
}
|
|
patch.apply();
|
|
}
|
|
|
|
// Getters.
|
|
getSize() { return this._used; }
|
|
getUint8(at) {
|
|
_getterRangeCheck(this, at, 1);
|
|
return this._buf[at];
|
|
}
|
|
getUint16(at) {
|
|
_getterRangeCheck(this, at, 2);
|
|
return this._buf[at] | (this._buf[at + 1] << 8);
|
|
}
|
|
getUint24(at) {
|
|
_getterRangeCheck(this, at, 3);
|
|
return this._buf[at] | (this._buf[at + 1] << 8) | (this._buf[at + 2] << 16);
|
|
}
|
|
getUint32(at) {
|
|
_getterRangeCheck(this, at, 4);
|
|
return (this._buf[at] | (this._buf[at + 1] << 8) | (this._buf[at + 2] << 16) | (this._buf[at + 3] << 24)) >>> 0;
|
|
}
|
|
getVaruint32(at) {
|
|
let v = 0;
|
|
let shift = 0;
|
|
let byte = 0;
|
|
do {
|
|
byte = this.getUint8(at++);
|
|
++read;
|
|
v = (v | ((byte & 0x7F) << shift) >>> 0) >>> 0;
|
|
shift += 7;
|
|
} while ((byte & 0x80) !== 0);
|
|
if (shift - 7 > 32) throw new RangeError(`Shifting too much at ${at}`);
|
|
if ((shift == 35) && ((byte & 0xF0) != 0)) throw new Error(`Unexpected non-significant varuint32 bits in last byte 0x${byte.toString(16)}`);
|
|
return { value: v, next: at };
|
|
}
|
|
getVarint32(at) {
|
|
let v = 0;
|
|
let shift = 0;
|
|
let byte = 0;
|
|
do {
|
|
byte = this.getUint8(at++);
|
|
v = (v | ((byte & 0x7F) << shift) >>> 0) >>> 0;
|
|
shift += 7;
|
|
} while ((byte & 0x80) !== 0);
|
|
if (shift - 7 > 32) throw new RangeError(`Shifting too much at ${at}`);
|
|
if ((shift == 35) && (((byte << 26) >> 30) != ((byte << 25) >> 31))) throw new Error(`Unexpected non-significant varint32 bits in last byte 0x${byte.toString(16)}`);
|
|
if ((byte & 0x40) === 0x40) {
|
|
const sext = shift < 32 ? 32 - shift : 0;
|
|
v = (v << sext) >> sext;
|
|
}
|
|
return { value: v, next: at };
|
|
}
|
|
getVaruint1(at) {
|
|
const res = this.getVaruint32(at);
|
|
if (res.value !== 0 && res.value !== 1) throw new Error(`Expected a varuint1, got value ${res.value}`);
|
|
return res;
|
|
}
|
|
getVaruint7(at) {
|
|
const res = this.getVaruint32(at);
|
|
if (res.value > varuint7Max) throw new Error(`Expected a varuint7, got value ${res.value}`);
|
|
return res;
|
|
}
|
|
getString(at) {
|
|
const size = this.getVaruint32(at);
|
|
const last = size.next + size.value;
|
|
let i = size.next;
|
|
let str = "";
|
|
while (i < last) {
|
|
// Decode UTF-8 2003 code points.
|
|
const peek = this.getUint8(i);
|
|
let code;
|
|
if ((peek & 0x80) === 0x0) {
|
|
const utf8 = this.getUint8(i);
|
|
assert.eq(utf8 & 0x80, 0x00);
|
|
i += 1;
|
|
code = utf8;
|
|
} else if ((peek & 0xE0) === 0xC0) {
|
|
const utf8 = this.getUint16(i);
|
|
assert.eq(utf8 & 0xC0E0, 0x80C0);
|
|
i += 2;
|
|
code = ((utf8 & 0x1F) << 6) | ((utf8 & 0x3F00) >> 8);
|
|
} else if ((peek & 0xF0) === 0xE0) {
|
|
const utf8 = this.getUint24(i);
|
|
assert.eq(utf8 & 0xC0C0F0, 0x8080E0);
|
|
i += 3;
|
|
code = ((utf8 & 0xF) << 12) | ((utf8 & 0x3F00) >> 2) | ((utf8 & 0x3F0000) >> 16);
|
|
} else if ((peek & 0xF8) === 0xF0) {
|
|
const utf8 = this.getUint32(i);
|
|
assert.eq((utf8 & 0xC0C0C0F8) | 0, 0x808080F0 | 0);
|
|
i += 4;
|
|
code = ((utf8 & 0x7) << 18) | ((utf8 & 0x3F00) << 4) | ((utf8 & 0x3F0000) >> 10) | ((utf8 & 0x3F000000) >> 24);
|
|
} else
|
|
throw new Error(`Unexpectedly large UTF-8 initial byte 0x${peek.toString(16)}`);
|
|
str += String.fromCodePoint(code);
|
|
}
|
|
if (i !== last)
|
|
throw new Error(`String decoding read up to ${i}, expected ${last}, UTF-8 decoding was too greedy`);
|
|
return str;
|
|
}
|
|
};
|
|
|
|
class PatchableLowLevelBinary extends LowLevelBinary {
|
|
constructor(type, lowLevelBinary) {
|
|
super();
|
|
this.type = type;
|
|
this.target = lowLevelBinary;
|
|
this._buffered_bytes = 0;
|
|
}
|
|
_push8(v) { ++this._buffered_bytes; super._push8(v); }
|
|
apply() {
|
|
this.target[this.type](this._buffered_bytes);
|
|
for (let i = 0; i < this._buffered_bytes; ++i)
|
|
this.target.uint8(this._buf[i]);
|
|
}
|
|
};
|