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int8.js
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137 lines (128 loc) · 3.93 KB
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//? if (INT8) {
// types/ints/int8
/**
* Writes an 8bit signed integer.
* @param {number} value Value to write
* @param {number=} offset Offset to write to. Will use and advance {@link ByteBuffer#offset} by `1` if omitted.
* @returns {!ByteBuffer} this
* @expose
*/
ByteBufferPrototype.writeInt8 = function(value, offset) {
//? RELATIVE();
if (!this.noAssert) {
//? ASSERT_INTEGER('value');
//? ASSERT_OFFSET();
}
//? ENSURE_CAPACITY(1);
//? if (NODE)
this.buffer[offset] = value;
//? else if (DATAVIEW)
this.view.setInt8(offset, value);
//? else
this.view[offset] = value;
//? RELATIVE(1);
return this;
};
/**
* Writes an 8bit signed integer. This is an alias of {@link ByteBuffer#writeInt8}.
* @function
* @param {number} value Value to write
* @param {number=} offset Offset to write to. Will use and advance {@link ByteBuffer#offset} by `1` if omitted.
* @returns {!ByteBuffer} this
* @expose
*/
ByteBufferPrototype.writeByte = ByteBufferPrototype.writeInt8;
/**
* Reads an 8bit signed integer.
* @param {number=} offset Offset to read from. Will use and advance {@link ByteBuffer#offset} by `1` if omitted.
* @returns {number} Value read
* @expose
*/
ByteBufferPrototype.readInt8 = function(offset) {
//? RELATIVE();
if (!this.noAssert) {
//? ASSERT_OFFSET(1);
}
//? if (NODE) {
var value = this.buffer[offset];
if ((value & 0x80) === 0x80) value = -(0xFF - value + 1); // Cast to signed
//? } else if (DATAVIEW) {
var value = this.view.getInt8(offset);
//? } else {
var value = this.view[offset];
if ((value & 0x80) === 0x80) value = -(0xFF - value + 1); // Cast to signed
//? }
//? RELATIVE(1);
return value;
};
//? if (ALIASES) {
/**
* Reads an 8bit signed integer. This is an alias of {@link ByteBuffer#readInt8}.
* @function
* @param {number=} offset Offset to read from. Will use and advance {@link ByteBuffer#offset} by `1` if omitted.
* @returns {number} Value read
* @expose
*/
ByteBufferPrototype.readByte = ByteBufferPrototype.readInt8;
//? }
/**
* Writes an 8bit unsigned integer.
* @param {number} value Value to write
* @param {number=} offset Offset to write to. Will use and advance {@link ByteBuffer#offset} by `1` if omitted.
* @returns {!ByteBuffer} this
* @expose
*/
ByteBufferPrototype.writeUint8 = function(value, offset) {
//? RELATIVE();
if (!this.noAssert) {
//? ASSERT_INTEGER('value', true);
//? ASSERT_OFFSET();
}
//? ENSURE_CAPACITY(1);
//? if (NODE)
this.buffer[offset] = value;
//? else if (DATAVIEW)
this.view.setUint8(offset, value);
//? else
this.view[offset] = value;
//? RELATIVE(1);
return this;
};
/**
* Writes an 8bit unsigned integer. This is an alias of {@link ByteBuffer#writeUint8}.
* @function
* @param {number} value Value to write
* @param {number=} offset Offset to write to. Will use and advance {@link ByteBuffer#offset} by `1` if omitted.
* @returns {!ByteBuffer} this
* @expose
*/
ByteBufferPrototype.writeUInt8 = ByteBufferPrototype.writeUint8;
/**
* Reads an 8bit unsigned integer.
* @param {number=} offset Offset to read from. Will use and advance {@link ByteBuffer#offset} by `1` if omitted.
* @returns {number} Value read
* @expose
*/
ByteBufferPrototype.readUint8 = function(offset) {
//? RELATIVE();
if (!this.noAssert) {
//? ASSERT_OFFSET(1);
}
//? if (NODE)
var value = this.buffer[offset];
//? else if (DATAVIEW)
var value = this.view.getUint8(offset);
//? else
var value = this.view[offset];
//? RELATIVE(1);
return value;
};
/**
* Reads an 8bit unsigned integer. This is an alias of {@link ByteBuffer#readUint8}.
* @function
* @param {number=} offset Offset to read from. Will use and advance {@link ByteBuffer#offset} by `1` if omitted.
* @returns {number} Value read
* @expose
*/
ByteBufferPrototype.readUInt8 = ByteBufferPrototype.readUint8;
//? }