feat: expose DecimalValueFromString

to construct decimals from raw-string representation.

Author: laskoviymishka

examples/decimal/main.go

@@ -93,6 +93,10 @@ func main() {
 
 			x := big.NewInt(42 * 1000000000)
 			x.Mul(x, big.NewInt(2))
+			parsedDecimal, err := types.DecimalValueFromString("42.00", 22, 9)
+			if err != nil {
+				panic(err)
+			}
 
 			_, _, err = s.Execute(ctx, txc, render(writeQuery, templateConfig{
 				TablePathPrefix: prefix,
@@ -103,6 +107,10 @@ func main() {
 							types.StructFieldValue("id", types.Uint32Value(42)),
 							types.StructFieldValue("value", types.DecimalValueFromBigInt(x, 22, 9)),
 						),
+						types.StructValue(
+							types.StructFieldValue("id", types.Uint32Value(43)),
+							types.StructFieldValue("value", parsedDecimal),
+						),
 					),
 				),
 			))

table/types/value.go

@@ -189,6 +189,14 @@ func DecimalValueFromBigInt(v *big.Int, precision, scale uint32) Value {
 	return value.DecimalValueFromBigInt(v, precision, scale)
 }
 
+func DecimalValueFromString(str string, precision, scale uint32) (Value, error) {
+	bigI, err := decimal.Parse(str, precision, scale)
+	if err != nil {
+		return nil, err
+	}
+	return value.DecimalValueFromBigInt(bigI, precision, scale), nil
+}
+
 func TupleValue(vs ...Value) Value {
 	return value.TupleValue(vs...)
 }