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
__go_string_slice(String s,intgo start,intgo end)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 }
27