| Peter Collingbourne | 594c10d | 2014-11-27 00:12:26 +0000 | [diff] [blame] | 1 | /* go-strslice.c -- the go string slice function. |
| 2 | |
| 3 | Copyright 2009 The Go Authors. All rights reserved. |
| 4 | Use of this source code is governed by a BSD-style |
| 5 | license that can be found in the LICENSE file. */ |
| 6 | |
| 7 | #include "go-panic.h" |
| 8 | #include "runtime.h" |
| 9 | #include "arch.h" |
| 10 | #include "malloc.h" |
| 11 | |
| 12 | String |
| 13 | __go_string_slice (String s, intgo start, intgo end) |
| 14 | { |
| 15 | intgo len; |
| 16 | String ret; |
| 17 | |
| 18 | len = s.len; |
| 19 | if (end == -1) |
| 20 | end = len; |
| 21 | if (start > len || end < start || end > len) |
| 22 | runtime_panicstring ("string index out of bounds"); |
| 23 | ret.str = s.str + start; |
| 24 | ret.len = end - start; |
| 25 | return ret; |
| 26 | } |