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https://github.com/c64scene-ar/llvm-6502.git
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551ccae044
Move include/Config and include/Support into include/llvm/Config, include/llvm/ADT and include/llvm/Support. From here on out, all LLVM public header files must be under include/llvm/. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
44 lines
1.7 KiB
C++
44 lines
1.7 KiB
C++
//===-- StringExtras.cpp - Implement the StringExtras header --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the StringExtras.h header
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/StringExtras.h"
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using namespace llvm;
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/// getToken - This function extracts one token from source, ignoring any
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/// leading characters that appear in the Delimiters string, and ending the
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/// token at any of the characters that appear in the Delimiters string. If
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/// there are no tokens in the source string, an empty string is returned.
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/// The Source source string is updated in place to remove the returned string
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/// and any delimiter prefix from it.
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std::string llvm::getToken(std::string &Source, const char *Delimiters) {
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unsigned NumDelimiters = std::strlen(Delimiters);
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// Figure out where the token starts.
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std::string::size_type Start =
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Source.find_first_not_of(Delimiters, 0, NumDelimiters);
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if (Start == std::string::npos) Start = Source.size();
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// Find the next occurance of the delimiter.
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std::string::size_type End =
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Source.find_first_of(Delimiters, Start, NumDelimiters);
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if (End == std::string::npos) End = Source.size();
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// Create the return token.
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std::string Result = std::string(Source.begin()+Start, Source.begin()+End);
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// Erase the token that we read in.
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Source.erase(Source.begin(), Source.begin()+End);
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return Result;
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}
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