diff options
Diffstat (limited to 'internal/intconv/intconv.go')
| -rw-r--r-- | internal/intconv/intconv.go | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/internal/intconv/intconv.go b/internal/intconv/intconv.go deleted file mode 100644 index 08530265..00000000 --- a/internal/intconv/intconv.go +++ /dev/null @@ -1,97 +0,0 @@ -// Package intconv provides checked integer conversion helpers. -package intconv - -import ( - "fmt" - "math" -) - -// Uint64ToInt converts v to int, returning an error if it overflows. -func Uint64ToInt(v uint64) (int, error) { - if v > uint64(math.MaxInt) { - return 0, fmt.Errorf("intconv: uint64 %d overflows int", v) - } - - return int(v), nil -} - -// UintptrToInt converts v to int, returning an error if it overflows. -func UintptrToInt(v uintptr) (int, error) { - if v > uintptr(math.MaxInt) { - return 0, fmt.Errorf("intconv: uintptr %d overflows int", v) - } - - return int(v), nil -} - -// IntToUint64 converts v to uint64, returning an error if v is negative. -func IntToUint64(v int) (uint64, error) { - if v < 0 { - return 0, fmt.Errorf("intconv: int %d is negative", v) - } - - return uint64(v), nil -} - -// IntToUint32 converts v to uint32, returning an error if it overflows. -func IntToUint32(v int) (uint32, error) { - if v < 0 || v > math.MaxUint32 { - return 0, fmt.Errorf("intconv: int %d overflows uint32", v) - } - - return uint32(v), nil -} - -// Uint64ToInt64 converts v to int64, returning an error if it overflows. -func Uint64ToInt64(v uint64) (int64, error) { - if v > math.MaxInt64 { - return 0, fmt.Errorf("intconv: uint64 %d overflows int64", v) - } - - return int64(v), nil -} - -// Int64ToUint64 converts v to uint64, returning an error if v is negative. -func Int64ToUint64(v int64) (uint64, error) { - if v < 0 { - return 0, fmt.Errorf("intconv: int64 %d is negative", v) - } - - return uint64(v), nil -} - -// Int64ToInt32 converts v to int32, returning an error if it overflows. -func Int64ToInt32(v int64) (int32, error) { - if v < math.MinInt32 || v > math.MaxInt32 { - return 0, fmt.Errorf("intconv: int64 %d overflows int32", v) - } - - return int32(v), nil -} - -// SignExtendByteToUint32 sign-extends b as a signed 8-bit integer into uint32. -func SignExtendByteToUint32(b byte) uint32 { - if b&0x80 == 0 { - return uint32(b) - } - - return 0xFFFFFF00 | uint32(b) -} - -// Uint32ToUint8 converts v to uint8, returning an error if it overflows. -func Uint32ToUint8(v uint32) (uint8, error) { - if v > math.MaxUint8 { - return 0, fmt.Errorf("intconv: uint32 %d overflows uint8", v) - } - - return uint8(v), nil -} - -// Uint32ToInt converts v to int, returning an error if it overflows. -func Uint32ToInt(v uint32) (int, error) { - if uint64(v) > uint64(math.MaxInt) { - return 0, fmt.Errorf("intconv: uint32 %d overflows int", v) - } - - return int(v), nil -} |
