61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
//
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// Copyright (c) 2011 Alex Yatskov
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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#include "metacall.hpp"
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#include "mc_token.hpp"
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namespace metacall {
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//
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// Token
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//
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Token::Token(const char value[]) :
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value_(hash(value))
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{
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}
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Token::Token(unsigned value) :
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value_(value)
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{
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}
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Token::operator unsigned() const {
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return value_;
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}
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unsigned Token::hash(const char str[]) {
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// djb2 string hash, see http://www.cse.yorku.ca/~oz/hash.html
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unsigned hash = 5381;
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for (const char* ptr = str; *ptr != 0; ++ptr) {
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hash = (hash << 5) + hash + *ptr;
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}
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return hash;
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}
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}
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