diff options
Diffstat (limited to 'libgo/go/bytes/buffer.go')
| -rw-r--r-- | libgo/go/bytes/buffer.go | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/libgo/go/bytes/buffer.go b/libgo/go/bytes/buffer.go index afdf220..efb9798 100644 --- a/libgo/go/bytes/buffer.go +++ b/libgo/go/bytes/buffer.go @@ -99,6 +99,19 @@ func (b *Buffer) grow(n int) int { return b.off + m } +// Grow grows the buffer's capacity, if necessary, to guarantee space for +// another n bytes. After Grow(n), at least n bytes can be written to the +// buffer without another allocation. +// If n is negative, Grow will panic. +// If the buffer can't grow it will panic with ErrTooLarge. +func (b *Buffer) Grow(n int) { + if n < 0 { + panic("bytes.Buffer.Grow: negative count") + } + m := b.grow(n) + b.buf = b.buf[0:m] +} + // Write appends the contents of p to the buffer. The return // value n is the length of p; err is always nil. // If the buffer becomes too large, Write will panic with |