Adding quantity field to Asset (#106)

* Version 1.0.8-rc1

* Added `quantity` getter to access only string value without symbol

* Version 1.0.8-rc2

* Added `fromUnits` static call on Asset

package.json

@@ -1,7 +1,7 @@
 {
     "name": "@wharfkit/antelope",
     "description": "Library for working with Antelope powered blockchains.",
-    "version": "1.0.7",
+    "version": "1.0.8-rc2",
     "homepage": "https://github.com/wharfkit/antelope",
     "license": "BSD-3-Clause-No-Military-License",
     "main": "lib/antelope.js",

src/chain/asset.ts

@@ -62,6 +62,26 @@ export class Asset implements ABISerializableObject {
         return new this(Int64.from(0), Asset.Symbol.abiDefault())
     }
 
+    static formatUnits(units: Int64Type, precision: number) {
+        const digits = Int64.from(units).toString().split('')
+        let negative = false
+        if (digits[0] === '-') {
+            negative = true
+            digits.shift()
+        }
+        while (digits.length <= precision) {
+            digits.unshift('0')
+        }
+        if (precision > 0) {
+            digits.splice(digits.length - precision, 0, '.')
+        }
+        let rv = digits.join('')
+        if (negative) {
+            rv = '-' + rv
+        }
+        return rv
+    }
+
     constructor(units: Int64, symbol: Asset.Symbol) {
         this.units = units
         this.symbol = symbol
@@ -80,30 +100,17 @@ export class Asset implements ABISerializableObject {
         this.units = this.symbol.convertFloat(newValue)
     }
 
+    get quantity(): string {
+        return Asset.formatUnits(this.units, this.symbol.precision)
+    }
+
     toABI(encoder: ABIEncoder) {
         this.units.toABI(encoder)
         this.symbol.toABI(encoder)
     }
 
     toString() {
-        const digits = this.units.toString().split('')
-        let negative = false
-        if (digits[0] === '-') {
-            negative = true
-            digits.shift()
-        }
-        const p = this.symbol.precision
-        while (digits.length <= p) {
-            digits.unshift('0')
-        }
-        if (p > 0) {
-            digits.splice(digits.length - p, 0, '.')
-        }
-        let rv = digits.join('')
-        if (negative) {
-            rv = '-' + rv
-        }
-        return rv + ' ' + this.symbol.name
+        return this.quantity + ' ' + this.symbol.name
     }
 
     toJSON() {