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e6eecec761
Include it in dependents which have previously relied on it transitively.
166 lines
4.1 KiB
C++
166 lines
4.1 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 cmListFileCache_h
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#define cmListFileCache_h
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#include <cmConfigure.h> // IWYU pragma: keep
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#include <iosfwd>
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#include <string>
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#include <vector>
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#include "cmStateSnapshot.h"
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/** \class cmListFileCache
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* \brief A class to cache list file contents.
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*
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* cmListFileCache is a class used to cache the contents of parsed
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* cmake list files.
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*/
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class cmMessenger;
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struct cmCommandContext
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{
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std::string Name;
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long Line;
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cmCommandContext()
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: Name()
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, Line(0)
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{
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}
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};
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struct cmListFileArgument
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{
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enum Delimiter
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{
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Unquoted,
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Quoted,
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Bracket
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};
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cmListFileArgument()
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: Value()
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, Delim(Unquoted)
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, Line(0)
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{
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}
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cmListFileArgument(const cmListFileArgument& r)
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: Value(r.Value)
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, Delim(r.Delim)
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, Line(r.Line)
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{
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}
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cmListFileArgument(const std::string& v, Delimiter d, long line)
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: Value(v)
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, Delim(d)
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, Line(line)
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{
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}
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bool operator==(const cmListFileArgument& r) const
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{
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return (this->Value == r.Value) && (this->Delim == r.Delim);
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}
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bool operator!=(const cmListFileArgument& r) const { return !(*this == r); }
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std::string Value;
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Delimiter Delim;
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long Line;
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};
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class cmListFileContext
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{
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public:
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std::string Name;
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std::string FilePath;
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long Line;
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cmListFileContext()
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: Name()
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, FilePath()
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, Line(0)
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{
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}
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static cmListFileContext FromCommandContext(cmCommandContext const& lfcc,
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std::string const& fileName)
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{
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cmListFileContext lfc;
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lfc.FilePath = fileName;
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lfc.Line = lfcc.Line;
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lfc.Name = lfcc.Name;
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return lfc;
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}
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};
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std::ostream& operator<<(std::ostream&, cmListFileContext const&);
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bool operator<(const cmListFileContext& lhs, const cmListFileContext& rhs);
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bool operator==(cmListFileContext const& lhs, cmListFileContext const& rhs);
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bool operator!=(cmListFileContext const& lhs, cmListFileContext const& rhs);
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struct cmListFileFunction : public cmCommandContext
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{
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std::vector<cmListFileArgument> Arguments;
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};
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// Represent a backtrace (call stack). Provide value semantics
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// but use efficient reference-counting underneath to avoid copies.
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class cmListFileBacktrace
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{
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public:
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// Default-constructed backtrace may not be used until after
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// set via assignment from a backtrace constructed with a
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// valid snapshot.
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cmListFileBacktrace();
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// Construct an empty backtrace whose bottom sits in the directory
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// indicated by the given valid snapshot.
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cmListFileBacktrace(cmStateSnapshot snapshot);
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// Backtraces may be copied and assigned as values.
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cmListFileBacktrace(cmListFileBacktrace const& r);
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cmListFileBacktrace& operator=(cmListFileBacktrace const& r);
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~cmListFileBacktrace();
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cmStateSnapshot GetBottom() const { return this->Bottom; }
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// Get a backtrace with the given file scope added to the top.
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// May not be called until after construction with a valid snapshot.
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cmListFileBacktrace Push(std::string const& file) const;
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// Get a backtrace with the given call context added to the top.
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// May not be called until after construction with a valid snapshot.
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cmListFileBacktrace Push(cmListFileContext const& lfc) const;
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// Get a backtrace with the top level removed.
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// May not be called until after a matching Push.
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cmListFileBacktrace Pop() const;
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// Get the context at the top of the backtrace.
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// Returns an empty context if the backtrace is empty.
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cmListFileContext const& Top() const;
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// Print the top of the backtrace.
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void PrintTitle(std::ostream& out) const;
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// Print the call stack below the top of the backtrace.
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void PrintCallStack(std::ostream& out) const;
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private:
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struct Entry;
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cmStateSnapshot Bottom;
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Entry* Cur;
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cmListFileBacktrace(cmStateSnapshot bottom, Entry* up,
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cmListFileContext const& lfc);
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cmListFileBacktrace(cmStateSnapshot bottom, Entry* cur);
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};
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struct cmListFile
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{
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bool ParseFile(const char* path, cmMessenger* messenger,
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cmListFileBacktrace const& lfbt);
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std::vector<cmListFileFunction> Functions;
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};
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#endif
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