fable-compiler/bin/fable-library/BitConverter.js

Fable compiler

import { fromBits, getHighBits, getHighBitsUnsigned, getLowBits, getLowBitsUnsigned } from "./Long";
const littleEndian = true;
export function isLittleEndian() {
    return littleEndian;
}
export function getBytesBoolean(value) {
    const bytes = new Uint8Array(1);
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    view.setUint8(0, value ? 1 : 0);
    return bytes;
}
export function getBytesChar(value) {
    const bytes = new Uint8Array(2);
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    view.setUint16(0, value.charCodeAt(0), littleEndian);
    return bytes;
}
export function getBytesInt16(value) {
    const bytes = new Uint8Array(2);
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    view.setInt16(0, value, littleEndian);
    return bytes;
}
export function getBytesInt32(value) {
    const bytes = new Uint8Array(4);
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    view.setInt32(0, value, littleEndian);
    return bytes;
}
export function getBytesInt64(value) {
    const bytes = new Uint8Array(8);
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    view.setInt32(littleEndian ? 0 : 4, getLowBits(value), littleEndian);
    view.setInt32(littleEndian ? 4 : 0, getHighBits(value), littleEndian);
    return bytes;
}
export function getBytesUInt16(value) {
    const bytes = new Uint8Array(2);
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    view.setUint16(0, value, littleEndian);
    return bytes;
}
export function getBytesUInt32(value) {
    const bytes = new Uint8Array(4);
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    view.setUint32(0, value, littleEndian);
    return bytes;
}
export function getBytesUInt64(value) {
    const bytes = new Uint8Array(8);
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    view.setUint32(littleEndian ? 0 : 4, getLowBitsUnsigned(value), littleEndian);
    view.setUint32(littleEndian ? 4 : 0, getHighBitsUnsigned(value), littleEndian);
    return bytes;
}
export function getBytesSingle(value) {
    const bytes = new Uint8Array(4);
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    view.setFloat32(0, value, littleEndian);
    return bytes;
}
export function getBytesDouble(value) {
    const bytes = new Uint8Array(8);
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    view.setFloat64(0, value, littleEndian);
    return bytes;
}
export function int64BitsToDouble(value) {
    const buffer = new ArrayBuffer(8);
    const view = new DataView(buffer);
    view.setInt32(littleEndian ? 0 : 4, getLowBits(value), littleEndian);
    view.setInt32(littleEndian ? 4 : 0, getHighBits(value), littleEndian);
    return view.getFloat64(0, littleEndian);
}
export function doubleToInt64Bits(value) {
    const buffer = new ArrayBuffer(8);
    const view = new DataView(buffer);
    view.setFloat64(0, value, littleEndian);
    const lowBits = view.getInt32(littleEndian ? 0 : 4, littleEndian);
    const highBits = view.getInt32(littleEndian ? 4 : 0, littleEndian);
    return fromBits(lowBits, highBits, false);
}
export function toBoolean(bytes, offset) {
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    return view.getUint8(offset) === 1 ? true : false;
}
export function toChar(bytes, offset) {
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    const code = view.getUint16(offset, littleEndian);
    return String.fromCharCode(code);
}
export function toInt16(bytes, offset) {
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    return view.getInt16(offset, littleEndian);
}
export function toInt32(bytes, offset) {
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    return view.getInt32(offset, littleEndian);
}
export function toInt64(bytes, offset) {
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    const lowBits = view.getInt32(offset + (littleEndian ? 0 : 4), littleEndian);
    const highBits = view.getInt32(offset + (littleEndian ? 4 : 0), littleEndian);
    return fromBits(lowBits, highBits, false);
}
export function toUInt16(bytes, offset) {
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    return view.getUint16(offset, littleEndian);
}
export function toUInt32(bytes, offset) {
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    return view.getUint32(offset, littleEndian);
}
export function toUInt64(bytes, offset) {
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    const lowBits = view.getUint32(offset + (littleEndian ? 0 : 4), littleEndian);
    const highBits = view.getUint32(offset + (littleEndian ? 4 : 0), littleEndian);
    return fromBits(lowBits, highBits, true);
}
export function toSingle(bytes, offset) {
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    return view.getFloat32(offset, littleEndian);
}
export function toDouble(bytes, offset) {
    const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
    return view.getFloat64(offset, littleEndian);
}
export function toString(bytes, offset, count) {
    let ar = bytes;
    if (typeof offset !== "undefined" && typeof count !== "undefined") {
        ar = bytes.subarray(offset, offset + count);
    }
    else if (typeof offset !== "undefined") {
        ar = bytes.subarray(offset);
    }
    return Array.from(ar).map((b) => ("0" + b.toString(16)).slice(-2)).join("-");
}
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