Add all additional types to zero package

* Add all additional float, int and uint types to zero package
* Moved convert to its own package

* Updated README to reflect changes

Author: nullbio

README.md

@@ -98,25 +98,74 @@ Nullable string.
 
 Will marshal to a blank string if null. Blank string input produces a null String. Null values and zero values are considered equivalent. Can unmarshal from `sql.NullString` JSON input.
 
+#### zero.Bool
+Nullable bool.
+
+Will marshal to false if null. `false` produces a null Float. Null values and zero values are considered equivalent. Can unmarshal from `sql.NullBool` JSON input.
+
+#### zero.Time
+
+Will marshal to the zero time if null. Uses `time.Time`'s marshaler. Can unmarshal from `pq.NullTime` and similar JSON input.
+
+#### zero.Float32
+Nullable float32.
+
+Will marshal to 0 if null. 0.0 produces a null Float32. Null values and zero values are considered equivalent. Can unmarshal from `zero.NullFloat32` JSON input.
+
+#### zero.Float64
+Nullable float64.
+
+Will marshal to 0 if null. 0.0 produces a null Float64. Null values and zero values are considered equivalent. Can unmarshal from `sql.NullFloat64` JSON input.
+
 #### zero.Int
+Nullable int.
+
+Will marshal to 0 if null. 0 produces a null Int. Null values and zero values are considered equivalent. Can unmarshal from `zero.NullInt` JSON input.
+
+#### zero.Int8
+Nullable int8.
+
+Will marshal to 0 if null. 0 produces a null Int8. Null values and zero values are considered equivalent. Can unmarshal from `zero.NullInt8` JSON input.
+
+#### zero.Int16
+Nullable int16.
+
+Will marshal to 0 if null. 0 produces a null Int16. Null values and zero values are considered equivalent. Can unmarshal from `zero.NullInt16` JSON input.
+
+#### zero.Int32
+Nullable int32.
+
+Will marshal to 0 if null. 0 produces a null Int32. Null values and zero values are considered equivalent. Can unmarshal from `zero.NullInt32` JSON input.
+
+#### zero.Int64
 Nullable int64.
 
-Will marshal to 0 if null. 0 produces a null Int. Null values and zero values are considered equivalent. Can unmarshal from `sql.NullInt64` JSON input.
+Will marshal to 0 if null. 0 produces a null Int64. Null values and zero values are considered equivalent. Can unmarshal from `sql.NullInt64` JSON input.
 
-#### zero.Float
-Nullable float64.
+#### zero.Uint
+Nullable uint.
 
-Will marshal to 0 if null. 0.0 produces a null Float. Null values and zero values are considered equivalent. Can unmarshal from `sql.NullFloat64` JSON input.
+Will marshal to 0 if null. 0 produces a null Uint. Null values and zero values are considered equivalent. Can unmarshal from `zero.NullUint` JSON input.
 
-#### zero.Bool
-Nullable bool.
+#### zero.Uint8
+Nullable uint8.
 
-Will marshal to false if null. `false` produces a null Float. Null values and zero values are considered equivalent. Can unmarshal from `sql.NullBool` JSON input.
+Will marshal to 0 if null. 0 produces a null Uint8. Null values and zero values are considered equivalent. Can unmarshal from `zero.NullUint8` JSON input.
 
-#### zero.Time
+#### zero.Uint16
+Nullable uint16.
 
-Will marshal to the zero time if null. Uses `time.Time`'s marshaler. Can unmarshal from `pq.NullTime` and similar JSON input.
+Will marshal to 0 if null. 0 produces a null Uint16. Null values and zero values are considered equivalent. Can unmarshal from `zero.NullUint16` JSON input.
+
+#### zero.Uint32
+Nullable uint32.
+
+Will marshal to 0 if null. 0 produces a null Uint32. Null values and zero values are considered equivalent. Can unmarshal from `zero.NullUint32` JSON input.
+
+#### zero.Uint64
+Nullable uint64.
 
+Will marshal to 0 if null. 0 produces a null Uint64. Null values and zero values are considered equivalent. Can unmarshal from `zero.NullUint64` JSON input.
 
 ### Bugs
 `json`'s `",omitempty"` struct tag does not work correctly right now. It will never omit a null or empty String. This might be [fixed eventually](https://github.com/golang/go/issues/4357).

convert.go renamed to convert/convert.go

@@ -1,4 +1,4 @@
-package null
+package convert
 
 // Copyright 2011 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
@@ -19,10 +19,10 @@ import (
 
 var errNilPtr = errors.New("destination pointer is nil") // embedded in descriptive error
 
-// convertAssign copies to dest the value in src, converting it if possible.
+// ConvertAssign copies to dest the value in src, converting it if possible.
 // An error is returned if the copy would result in loss of information.
 // dest should be a pointer type.
-func convertAssign(dest, src interface{}) error {
+func ConvertAssign(dest, src interface{}) error {
 	// Common cases, without reflect.
 	switch s := src.(type) {
 	case string:
@@ -172,7 +172,7 @@ func convertAssign(dest, src interface{}) error {
 			return nil
 		} else {
 			dv.Set(reflect.New(dv.Type().Elem()))
-			return convertAssign(dv.Interface(), src)
+			return ConvertAssign(dv.Interface(), src)
 		}
 	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
 		s := asString(src)