LCOV - code coverage report
Current view: top level - lib/Support - StringExtras.cpp (source / functions) Hit Total Coverage
Test: llvm-toolchain.info Lines: 16 16 100.0 %
Date: 2017-09-14 15:23:50 Functions: 3 3 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : //===-- StringExtras.cpp - Implement the StringExtras header --------------===//
       2             : //
       3             : //                     The LLVM Compiler Infrastructure
       4             : //
       5             : // This file is distributed under the University of Illinois Open Source
       6             : // License. See LICENSE.TXT for details.
       7             : //
       8             : //===----------------------------------------------------------------------===//
       9             : //
      10             : // This file implements the StringExtras.h header
      11             : //
      12             : //===----------------------------------------------------------------------===//
      13             : 
      14             : #include "llvm/ADT/StringExtras.h"
      15             : #include "llvm/ADT/SmallVector.h"
      16             : using namespace llvm;
      17             : 
      18             : /// StrInStrNoCase - Portable version of strcasestr.  Locates the first
      19             : /// occurrence of string 's1' in string 's2', ignoring case.  Returns
      20             : /// the offset of s2 in s1 or npos if s2 cannot be found.
      21        3593 : StringRef::size_type llvm::StrInStrNoCase(StringRef s1, StringRef s2) {
      22        7186 :   size_t N = s2.size(), M = s1.size();
      23        3593 :   if (N > M)
      24             :     return StringRef::npos;
      25       34339 :   for (size_t i = 0, e = M - N + 1; i != e; ++i)
      26       62359 :     if (s1.substr(i, N).equals_lower(s2))
      27          23 :       return i;
      28             :   return StringRef::npos;
      29             : }
      30             : 
      31             : /// getToken - This function extracts one token from source, ignoring any
      32             : /// leading characters that appear in the Delimiters string, and ending the
      33             : /// token at any of the characters that appear in the Delimiters string.  If
      34             : /// there are no tokens in the source string, an empty string is returned.
      35             : /// The function returns a pair containing the extracted token and the
      36             : /// remaining tail string.
      37      539313 : std::pair<StringRef, StringRef> llvm::getToken(StringRef Source,
      38             :                                                StringRef Delimiters) {
      39             :   // Figure out where the token starts.
      40      539313 :   StringRef::size_type Start = Source.find_first_not_of(Delimiters);
      41             : 
      42             :   // Find the next occurrence of the delimiter.
      43      539313 :   StringRef::size_type End = Source.find_first_of(Delimiters, Start);
      44             : 
      45     1617939 :   return std::make_pair(Source.slice(Start, End), Source.substr(End));
      46             : }
      47             : 
      48             : /// SplitString - Split up the specified string according to the specified
      49             : /// delimiters, appending the result fragments to the output list.
      50        9913 : void llvm::SplitString(StringRef Source,
      51             :                        SmallVectorImpl<StringRef> &OutFragments,
      52             :                        StringRef Delimiters) {
      53        9913 :   std::pair<StringRef, StringRef> S = getToken(Source, Delimiters);
      54      129921 :   while (!S.first.empty()) {
      55       60004 :     OutFragments.push_back(S.first);
      56      120008 :     S = getToken(S.second, Delimiters);
      57             :   }
      58        9913 : }

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