libgo: update to go1.7rc3

    
    Reviewed-on: https://go-review.googlesource.com/25150

From-SVN: r238662

2 files changed, 10 insertions, 21 deletions

diff --git a/libgo/go/database/sql/driver/driver.go b/libgo/go/database/sql/driver/driver.go
index eca25f2..4dba85a 100644
--- a/libgo/go/database/sql/driver/driver.go
+++ b/libgo/go/database/sql/driver/driver.go
@@ -17,7 +17,7 @@ import "errors"
 //   float64
 //   bool
 //   []byte
-//   string   [*] everywhere except from Rows.Next.
+//   string
 //   time.Time
 type Value interface{}
 
@@ -144,7 +144,7 @@ type Stmt interface {
 // any type to a driver Value.
 type ColumnConverter interface {
 	// ColumnConverter returns a ValueConverter for the provided
-	// column index.  If the type of a specific column isn't known
+	// column index. If the type of a specific column isn't known
 	// or shouldn't be handled specially, DefaultValueConverter
 	// can be returned.
 	ColumnConverter(idx int) ValueConverter
@@ -154,7 +154,7 @@ type ColumnConverter interface {
 type Rows interface {
 	// Columns returns the names of the columns. The number of
 	// columns of the result is inferred from the length of the
-	// slice.  If a particular column name isn't known, an empty
+	// slice. If a particular column name isn't known, an empty
 	// string should be returned for that entry.
 	Columns() []string
 
@@ -165,10 +165,6 @@ type Rows interface {
 	// the provided slice. The provided slice will be the same
 	// size as the Columns() are wide.
 	//
-	// The dest slice may be populated only with
-	// a driver Value type, but excluding string.
-	// All string values must be converted to []byte.
-	//
 	// Next should return io.EOF when there are no more rows.
 	Next(dest []Value) error
 }
diff --git a/libgo/go/database/sql/driver/types.go b/libgo/go/database/sql/driver/types.go
index bc54784..e480e70 100644
--- a/libgo/go/database/sql/driver/types.go
+++ b/libgo/go/database/sql/driver/types.go
@@ -15,7 +15,7 @@ import (
 //
 // Various implementations of ValueConverter are provided by the
 // driver package to provide consistent implementations of conversions
-// between drivers.  The ValueConverters have several uses:
+// between drivers. The ValueConverters have several uses:
 //
 //  * converting from the Value types as provided by the sql package
 //    into a database table's specific column type and making sure it
@@ -172,28 +172,21 @@ func (n NotNull) ConvertValue(v interface{}) (Value, error) {
 }
 
 // IsValue reports whether v is a valid Value parameter type.
-// Unlike IsScanValue, IsValue permits the string type.
 func IsValue(v interface{}) bool {
-	if IsScanValue(v) {
+	if v == nil {
 		return true
 	}
-	if _, ok := v.(string); ok {
+	switch v.(type) {
+	case []byte, bool, float64, int64, string, time.Time:
 		return true
 	}
 	return false
 }
 
-// IsScanValue reports whether v is a valid Value scan type.
-// Unlike IsValue, IsScanValue does not permit the string type.
+// IsScanValue is equivalent to IsValue.
+// It exists for compatibility.
 func IsScanValue(v interface{}) bool {
-	if v == nil {
-		return true
-	}
-	switch v.(type) {
-	case int64, float64, []byte, bool, time.Time:
-		return true
-	}
-	return false
+	return IsValue(v)
 }
 
 // DefaultParameterConverter is the default implementation of