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37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
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#include <string>
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#include <map>
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#include <regex>
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// purpose:
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// takes the contents of a file in the form of a string
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// and searches for all the C++ class definitions, storing
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// their locations in a map of strings/int's
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typedef std::map<std::string, int, std::less<std::string> > map_type;
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regex expression("^(template[[:space:]]*<[^;:{]+>[[:space:]]*)?(class|struct)[[:space:]]*(\\<\\w+\\>([[:blank:]]*\\([^)]*\\))?[[:space:]]*)*(\\<\\w*\\>)[[:space:]]*(<[^;:{]+>[[:space:]]*)?(\\{|:[^;\\{()]*\\{)");
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map_type class_index;
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std::string::const_iterator base;
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bool grep_callback(const reg_match<std::string::const_iterator, regex::alloc_type>& what)
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{
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// what[0] contains the whole string
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// what[5] contains the class name.
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// what[6] contains the template specialisation if any.
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// add class name and position to map:
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class_index[std::string(what[5].first, what[5].second) + std::string(what[6].first, what[6].second)] =
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what[5].first - base;
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return true;
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}
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void IndexClasses(const std::string& file)
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{
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std::string::const_iterator start, end;
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start = file.begin();
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end = file.end();
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base = start;
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reg_grep(grep_callback, start, end, expression, match_default);
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}
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