Mercurial > hg > CbC > CbC_gcc
view libgo/runtime/go-strslice.c @ 138:fc828634a951
merge
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Thu, 08 Nov 2018 14:17:14 +0900 |
parents | 04ced10e8804 |
children |
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/* go-strslice.c -- the go string slice function. Copyright 2009 The Go Authors. All rights reserved. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. */ #include "runtime.h" String __go_string_slice (String s, intgo start, intgo end) { intgo len; String ret; len = s.len; if (end == -1) end = len; if (start > len || end < start || end > len) runtime_panicstring ("string index out of bounds"); ret.len = end - start; // If the length of the new string is zero, the str field doesn't // matter, so just set it to nil. This avoids the problem of // s.str + start pointing just past the end of the string, // which may keep the next memory block alive unnecessarily. if (ret.len == 0) ret.str = nil; else ret.str = s.str + start; return ret; }