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86578eccf2
Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
104 lines
2.4 KiB
C++
104 lines
2.4 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#ifndef cmDefinitions_h
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#define cmDefinitions_h
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#include <cmConfigure.h>
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#include "cmLinkedTree.h"
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#include <string>
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#include <vector>
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#if defined(CMAKE_BUILD_WITH_CMAKE)
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#ifdef CMake_HAVE_CXX_UNORDERED_MAP
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#include <unordered_map>
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#else
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#include "cmsys/hash_map.hxx"
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#endif
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#else
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#include <map>
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#endif
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/** \class cmDefinitions
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* \brief Store a scope of variable definitions for CMake language.
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*
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* This stores the state of variable definitions (set or unset) for
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* one scope. Sets are always local. Gets search parent scopes
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* transitively and save results locally.
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*/
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class cmDefinitions
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{
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typedef cmLinkedTree<cmDefinitions>::iterator StackIter;
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public:
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static const char* Get(const std::string& key, StackIter begin,
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StackIter end);
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static void Raise(const std::string& key, StackIter begin, StackIter end);
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static bool HasKey(const std::string& key, StackIter begin, StackIter end);
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/** Set (or unset if null) a value associated with a key. */
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void Set(const std::string& key, const char* value);
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std::vector<std::string> UnusedKeys() const;
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static std::vector<std::string> ClosureKeys(StackIter begin, StackIter end);
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static cmDefinitions MakeClosure(StackIter begin, StackIter end);
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private:
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// String with existence boolean.
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struct Def : public std::string
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{
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private:
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typedef std::string std_string;
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public:
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Def()
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: std_string()
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, Exists(false)
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, Used(false)
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{
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}
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Def(const char* v)
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: std_string(v ? v : "")
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, Exists(v ? true : false)
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, Used(false)
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{
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}
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Def(const std_string& v)
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: std_string(v)
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, Exists(true)
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, Used(false)
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{
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}
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Def(Def const& d)
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: std_string(d)
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, Exists(d.Exists)
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, Used(d.Used)
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{
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}
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bool Exists;
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bool Used;
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};
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static Def NoDef;
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#if defined(CMAKE_BUILD_WITH_CMAKE)
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#ifdef CMake_HAVE_CXX_UNORDERED_MAP
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typedef std::unordered_map<std::string, Def> MapType;
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#else
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typedef cmsys::hash_map<std::string, Def> MapType;
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#endif
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#else
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typedef std::map<std::string, Def> MapType;
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#endif
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MapType Map;
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static Def const& GetInternal(const std::string& key, StackIter begin,
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StackIter end, bool raise);
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};
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#endif
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