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Field.js
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Field.js
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var C = require('./abbot1Constants');
var calcLength = require('./abbot3Stream').calcLength;
//import { calcLength as calcLength } from './RWStream';
//export
class Field {
constructor(type, value) {
this.type = type;
this.value = value;
}
length() {
return calcLength(this.type, this.value);
}
write(stream) {
stream.write(this.type, this.value);
}
isNumeric() {
return false;
}
}
module.exports.Field = Field;
//export
class StringField extends Field {
constructor(str) {
super(C.TYPE_ASCII, str);
}
}
module.exports.StringField = StringField;
//export
class FilledField extends Field {
constructor(value, length) {
super(C.TYPE_COMPOSITE, value);
this.fillLength = length;
}
length() {
return this.fillLength;
}
write(stream) {
let len = this.value.length;
if (len < this.fillLength && len >= 0) {
if (len > 0)
stream.write(C.TYPE_ASCII, this.value);
let zeroLength = this.fillLength - len;
stream.write(C.TYPE_HEX, "20".repeat(zeroLength));
} else if (len == this.fillLength) {
stream.write(C.TYPE_ASCII, this.value);
} else {
throw "Length mismatch";
}
}
}
module.exports.FilledField = FilledField;
//export
class HexField extends Field {
constructor(hex) {
super(C.TYPE_HEX, hex);
}
}
module.exports.HexField = HexField;
//export
class ReservedField extends Field {
constructor(length) {
length = length || 1;
super(C.TYPE_HEX, "00".repeat(length));
}
}
module.exports.ReservedField = ReservedField;
//export
class UInt8Field extends Field {
constructor(value) {
super(C.TYPE_UINT8, value);
}
isNumeric() {
return true;
}
}
module.exports.UInt8Field = UInt8Field;
//export
class UInt16Field extends Field {
constructor(value) {
super(C.TYPE_UINT16, value);
}
isNumeric() {
return true;
}
}
module.exports.UInt16Field = UInt16Field;
//export
class UInt32Field extends Field {
constructor(value) {
super(C.TYPE_UINT32, value);
}
isNumeric() {
return true;
}
}
module.exports.UInt32Field = UInt32Field;
//export
class Int8Field extends Field {
constructor(value) {
super(C.TYPE_INT8, value);
}
isNumeric() {
return true;
}
}
module.exports.Int8Field = Int8Field;
//export
class Int16Field extends Field {
constructor(value) {
super(C.TYPE_INT16, value);
}
isNumeric() {
return true;
}
}
module.exports.Int16Field = Int16Field;
//export
class Int32Field extends Field {
constructor(value) {
super(C.TYPE_INT32, value);
}
isNumeric() {
return true;
}
}
module.exports.Int32Field = Int32Field;
//export
class FloatField extends Field {
constructor(value) {
super(C.TYPE_FLOAT, value);
}
isNumeric() {
return true;
}
}
module.exports.FloatField = FloatField;
//export
class DoubleField extends Field {
constructor(value) {
super(C.TYPE_DOUBLE, value);
}
isNumeric() {
return true;
}
}
module.exports.DoubleField = DoubleField;