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tra-analysis/website/functions/node_modules/bytebuffer/src/macros.js
Jacob Levine d2d5d4c04e push all website files
2019-01-06 13:14:45 -06:00

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//?...
// Welcome to the crazy world of MetaScript! Tell it what you need, it will not moan, and there it is.
// Substitute for the backing buffer's capacity
CAPACITY = NODE ? 'this.buffer.length' : 'this.buffer.byteLength';
// Asserts that a variable is an integer
ASSERT_INTEGER = function(varValue, unsigned) {
if (VERBOSE_MS) writeln(__+'// <ASSERT_INTEGER>');
if (INLINE) {
writeln(__+'if (typeof '+varValue+' !== \'number\' || '+varValue+' % 1 !== 0)');
writeln(__+' throw TypeError("Illegal '+varValue+': "+'+varValue+'+" (not an integer)");');
writeln(__+varValue+' '+(unsigned ? '>>>' : '|')+'= 0;');
} else {
writeln(__+varValue+' = assertInteger('+varValue+(typeof unsigned !== 'undefined' ? ', '+unsigned : '')+');');
}
if (VERBOSE_MS) writeln(__+'// </ASSERT_INTEGER>');
};
// Asserts that a variable is a number or Long
ASSERT_LONG = function(varValue, unsigned) {
if (typeof varValue === 'undefined') varValue = 'value';
if (VERBOSE_MS) writeln(__+'// <ASSERT_LONG>');
if (INLINE) {
writeln(__+'if (typeof '+varValue+' === \'number\')');
writeln(__+' '+varValue+' = Long.fromNumber('+varValue+');');
writeln(__+'else if (typeof '+varValue+' === \'string\')');
writeln(__+' '+varValue+' = Long.fromString('+varValue+');');
if (typeof unsigned !== 'undefined') { // When explicitly specified only
writeln(__+'else if ('+varValue+' && '+varValue+' instanceof Long)');
if (unsigned) {
writeln(__+' if (!'+varValue+'.unsigned) '+varValue+' = '+varValue+'.toUnsigned();');
} else {
writeln(__+' if ('+varValue+'.unsigned) '+varValue+' = '+varValue+'.toSigned();');
}
writeln(__+'else');
} else {
writeln(__+'else if (!('+varValue+' && '+varValue+' instanceof Long))');
}
writeln(__+' throw TypeError("Illegal '+varValue+': "+'+varValue+'+" (not an integer or Long)");');
} else {
writeln(__+varValue+' = assertLong('+varValue+(typeof unsigned !== 'undefined' ? ', '+unsigned : '')+');');
}
if (VERBOSE_MS) writeln(__+'// </ASSERT_LONG>');
};
// Casts a variable to a Long if necessary
LONG = function(varValue, unsigned) {
if (typeof varValue === 'undefined') varValue = 'value';
if (VERBOSE_MS) writeln(__+'// <LONG'+(typeof unsigned === 'boolean' ? ' unsigned='+unsigned : '')+'>');
writeln(__+'if (typeof '+varValue+' === \'number\')');
writeln(__+' '+varValue+' = Long.fromNumber('+varValue+(typeof unsigned === 'boolean' ? ', '+unsigned : '')+');');
writeln(__+'else if (typeof '+varValue+' === \'string\')');
writeln(__+' '+varValue+' = Long.fromString('+varValue+(typeof unsigned === 'boolean' ? ', '+unsigned : '')+');');
if (typeof unsigned === 'boolean') {
writeln(__+'else if ('+varValue+'.unsigned !== '+unsigned+') '+varValue+' = '+varValue+'.'+(unsigned ? 'toUnsigned' : 'toSigned')+'();');
}
if (VERBOSE_MS) writeln(__+'// </LONG>');
};
// Asserts that an offset is valid
ASSERT_OFFSET = function(size, varOffset) {
if (typeof size === 'undefined') size = 0;
if (typeof varOffset === 'undefined') varOffset = 'offset';
if (VERBOSE_MS) writeln(__+'// <ASSERT_OFFSET>');
if (INLINE) {
writeln(__+'if (typeof '+varOffset+' !== \'number\' || '+varOffset+' % 1 !== 0)');
writeln(__+' throw TypeError("Illegal '+varOffset+': "+'+varOffset+'+" (not an integer)");');
writeln(__+varOffset+' >>>= 0;');
writeln(__+'if ('+varOffset+' < 0 || '+varOffset+' + '+size+' > '+CAPACITY+')');
writeln(__+' throw RangeError("Illegal '+varOffset+': 0 <= "+'+varOffset+'+" (+"+'+size+'+") <= "+'+CAPACITY+');');
} else {
writeln(__+varOffset+' = assertOffset('+varOffset+', 0, '+CAPACITY+', '+size+');');
}
if (VERBOSE_MS) writeln(__+'// </ASSERT_OFFSET>');
};
// Asserts that a range is valid
ASSERT_RANGE = function(varBegin, varEnd) {
if (typeof varBegin === 'undefined') varBegin = 'begin';
if (typeof varEnd === 'undefined') varEnd = 'end';
if (VERBOSE_MS) writeln(__+'// <ASSERT_RANGE>');
if (INLINE) {
writeln(__+'if (typeof '+varBegin+' !== \'number\' || '+varBegin+' % 1 !== 0)');
writeln(__+' throw TypeError("Illegal '+varBegin+': Not an integer");');
writeln(__+varBegin+' >>>= 0;');
writeln(__+'if (typeof '+varEnd+' !== \'number\' || '+varEnd+' % 1 !== 0)');
writeln(__+' throw TypeError("Illegal '+varEnd+': Not an integer");');
writeln(__+varEnd+' >>>= 0;');
writeln(__+'if ('+varBegin+' < 0 || '+varBegin+' > '+varEnd+' || '+varEnd+' > '+CAPACITY+')');
writeln(__+' throw RangeError("Illegal range: 0 <= "+'+varBegin+'+" <= "+'+varEnd+'+" <= "+'+CAPACITY+');');
} else {
writeln(__+'assertRange('+varBegin+', '+varEnd+', 0, '+CAPACITY+');');
writeln(__+varBegin+' = rangeVal[0]; '+varEnd+' = rangeVal[1];');
}
if (VERBOSE_MS) writeln(__+'// </ASSERT_RANGE>');
};
// ENSURE_CAPACITY counter in case that multiple calls are used in a single method
var ECN = 0;
// Ensures that a ByteBuffer is backed by a buffer that takes `size` additional capacity
ENSURE_CAPACITY = function(size, varOffset) {
if (typeof varOffset === 'undefined') varOffset = 'offset';
if (VERBOSE_MS) writeln(__+'// <ENSURE_CAPACITY size='+size+'>');
if (INLINE) {
writeln(__+varOffset+' += '+size+';');
writeln(__+'var capacity'+ECN+' = '+CAPACITY+';');
writeln(__+'if ('+varOffset+' > capacity'+ECN+')');
writeln(__+' this.resize((capacity'+ECN+' *= 2) > '+varOffset+' ? capacity'+ECN+' : '+varOffset+');');
writeln(__+varOffset+' -= '+size+';');
} else {
writeln(__+'this.ensureCapacity('+varOffset+'+'+size+');');
}
if (VERBOSE_MS) writeln(__+'// </ENSURE_CAPACITY>');
++ECN;
};
// Sets up a relative operation if `size` is omitted, else increases offset by `size`
RELATIVE = function(size, varOffset, varRelOffset) {
if (VERBOSE_MS) writeln(__+'// <RELATIVE'+(typeof size !== 'undefined' ? ' size='+size : '')+'>');
if (typeof size === 'undefined') {
if (typeof varOffset === 'undefined') varOffset = "offset";
if (typeof varRelOffset === 'undefined') varRelOffset = "this.offset";
writeln(__+'var relative = typeof '+varOffset+' === \'undefined\';');
writeln(__+'if (relative) '+varOffset+' = '+varRelOffset+';');
} else {
if (typeof varOffset === 'undefined') varOffset = "this.offset";
writeln(__+'if (relative) this.offset += '+size+';');
}
if (VERBOSE_MS) writeln(__+'// </RELATIVE>');
};
// Reads an uint32 from an array
READ_UINT32_ARRAY = function(varValue, varOffset, varTarget, varEndian) {
if (typeof varValue === 'undefined') varValue = 'value';
if (typeof varOffset === 'undefined') varOffset = 'offset';
if (typeof varTarget === 'undefined') varTarget = NODE ? 'this.buffer' : 'this.view';
var ____ = typeof varEndian !== 'boolean' ? ' ' : '';
if (VERBOSE_MS) writeln(__+'// <READ_UINT32'+(typeof varEndian === 'boolean' ? ' le='+varEndian : '')+'>');
if (NODE || !DATAVIEW) {
if (typeof varEndian !== 'boolean')
writeln(__+'if ('+(varEndian || 'this.littleEndian')+') {');
if (typeof varEndian !== 'boolean' || varEndian === true) {
writeln(__+____+varValue+' = '+varTarget+'['+varOffset+'+2] << 16;');
writeln(__+____+varValue+' |= '+varTarget+'['+varOffset+'+1] << 8;');
writeln(__+____+varValue+' |= '+varTarget+'['+varOffset+' ];');
writeln(__+____+varValue+' += '+varTarget+'['+varOffset+'+3] << 24 >>> 0;');
}
if (typeof varEndian !== 'boolean')
writeln(__+'} else {');
if (typeof varEndian !== 'boolean' || varEndian === false) {
writeln(__+____+varValue+' = '+varTarget+'['+varOffset+'+1] << 16;');
writeln(__+____+varValue+' |= '+varTarget+'['+varOffset+'+2] << 8;');
writeln(__+____+varValue+' |= '+varTarget+'['+varOffset+'+3];');
writeln(__+____+varValue+' += '+varTarget+'['+varOffset+' ] << 24 >>> 0;');
}
if (typeof varEndian !== 'boolean')
writeln(__+'}');
} else {
writeln(__+varTarget+'.getUint32('+varOffset+', '+varEndian+');');
}
if (VERBOSE_MS) writeln(__+'// </READ_UINT32>');
};
// Writes an uint32 to an array
WRITE_UINT32_ARRAY = function(varValue, varOffset, varTarget, varEndian) {
if (typeof varValue === 'undefined') varValue = 'value';
if (typeof varOffset === 'undefined') varOffset = 'offset';
if (typeof varTarget === 'undefined') varTarget = NODE ? 'this.buffer' : 'this.view';
var ____ = typeof varEndian !== 'boolean' ? ' ' : '';
if (VERBOSE_MS) writeln(__+'// <WRITE_UINT32'+(typeof varEndian === 'boolean' ? ' le='+varEndian : '')+'>');
if (NODE || !DATAVIEW) {
if (typeof varEndian !== 'boolean')
writeln(__+'if ('+(varEndian || 'this.littleEndian')+') {');
if (typeof varEndian !== 'boolean' || varEndian === true) {
writeln(__+____+varTarget+'['+varOffset+'+3] = ('+varValue+' >>> 24) & 0xFF;');
writeln(__+____+varTarget+'['+varOffset+'+2] = ('+varValue+' >>> 16) & 0xFF;');
writeln(__+____+varTarget+'['+varOffset+'+1] = ('+varValue+' >>> 8) & 0xFF;');
writeln(__+____+varTarget+'['+varOffset+' ] = '+varValue+' & 0xFF;');
}
if (typeof varEndian !== 'boolean')
writeln(__+'} else {');
if (typeof varEndian !== 'boolean' || varEndian === false) {
writeln(__+____+varTarget+'['+varOffset+' ] = ('+varValue+' >>> 24) & 0xFF;');
writeln(__+____+varTarget+'['+varOffset+'+1] = ('+varValue+' >>> 16) & 0xFF;');
writeln(__+____+varTarget+'['+varOffset+'+2] = ('+varValue+' >>> 8) & 0xFF;');
writeln(__+____+varTarget+'['+varOffset+'+3] = '+varValue+' & 0xFF;');
}
if (typeof varEndian !== 'boolean')
writeln(__+'}');
} else {
writeln(__+varTarget+'.setUint32('+varValue+', '+varOffset+', '+varEndian+');');
}
if (VERBOSE_MS) writeln(__+'// </WRITE_UINT32>');
};
SET = function(varValue, varOffset, varTarget) { // with varTarget referencing a ByteBuffer
if (typeof varValue === 'undefined') varValue = 'value';
if (typeof varOffset === 'undefined') varOffset = 'offset';
if (typeof varTarget === 'undefined') varTarget = 'this';
if (NODE) {
writeln(__+varTarget+'.buffer['+varOffset+'] = '+varValue+';');
} else if (DATAVIEW) {
writeln(__+varTarget+'.view.setUint8('+varValue+', '+varOffset+');');
} else {
writeln(__+varTarget+'.view['+varOffset+'] = '+varValue+';');
}
};
GET = function(varOffset, varTarget) { // with varTarget referencing a ByteBuffer
if (typeof varOffset === 'undefined') varOffset = 'offset';
if (typeof varTarget === 'undefined') varTarget = 'this';
if (NODE) {
write(varTarget+'.buffer['+varOffset+']');
} else if (DATAVIEW) {
write(varTarget+'.view.getUint8('+varOffset+')');
} else {
write(varTarget+'.view['+varOffset+']');
}
};
//?.
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