71 lines
1.3 KiB
C
71 lines
1.3 KiB
C
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// stringpool.h -- a string pool for gold -*- C++ -*-
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#include <string>
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#include <list>
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// Stringpool
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// Manage a pool of unique strings.
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#ifndef GOLD_STRINGPOOL_H
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#define GOLD_STRINGPOOL_H
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namespace gold
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{
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class Stringpool
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{
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public:
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Stringpool();
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~Stringpool();
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// Add a string to the pool. This returns a canonical permanent
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// pointer to the string.
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const char* add(const char*);
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const char* add(const std::string& s)
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{ return this->add(s.c_str()); }
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// Add the prefix of a string to the pool.
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const char* add(const char *, size_t);
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private:
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Stringpool(const Stringpool&);
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Stringpool& operator=(const Stringpool&);
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struct stringdata
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{
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// Length of data in buffer.
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size_t len;
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// Allocated size of buffer.
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size_t alc;
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// Buffer.
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char data[1];
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};
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const char* add_string(const char*);
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struct Stringpool_hash
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{
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size_t
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operator()(const char*) const;
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};
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struct Stringpool_eq
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{
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bool
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operator()(const char* p1, const char* p2) const
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{ return strcmp(p1, p2) == 0; }
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};
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typedef Unordered_set<const char*, Stringpool_hash, Stringpool_eq,
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std::allocator<const char*>,
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true> String_set_type;
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String_set_type string_set_;
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std::list<stringdata*> strings_;
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};
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} // End namespace gold.
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#endif // !defined(GOLD_STRINGPOOL_H)
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