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247 lines
8.4 KiB
C++
247 lines
8.4 KiB
C++
// -*- C++ -*-
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/**
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* \file Counters.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Lars Gullik Bjønnes
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* \author Jean-Marc Lasgouttes
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* \author John Levon
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* \author Martin Vermeer
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*
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* Full author contact details are available in file CREDITS.
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*/
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#ifndef COUNTERS_H
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#define COUNTERS_H
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#include "OutputEnums.h"
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#include "support/docstring.h"
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#include <map>
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#include <vector>
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namespace lyx {
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class Layout;
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class Lexer;
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/// This represents a single counter.
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class Counter {
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public:
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///
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Counter();
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///
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Counter(docstring const & mc, docstring const & ls,
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docstring const & lsa);
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/// \return true on success
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bool read(Lexer & lex);
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///
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void set(int v);
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///
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void addto(int v);
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///
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int value() const;
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///
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void step();
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///
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void reset();
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/// Returns the master counter of this counter.
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docstring const & master() const;
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/// Checks if the master counter is cnt, and if so removes
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/// it. This is used when a counter is deleted.
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/// \return whether we removed the master.
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bool checkAndRemoveMaster(docstring const & cnt);
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/// Returns a LaTeX-like string to format the counter.
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/** This is similar to what one gets in LaTeX when using
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* "\the<counter>". The \c in_appendix bool tells whether we
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* want the version shown in an appendix.
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*/
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docstring const & labelString(bool in_appendix) const;
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/// Similar, but used for formatted references in XHTML output.
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/// E.g., for a section counter it might be "section \thesection"
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docstring const & prettyFormat() const { return prettyformat_; }
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/// Returns a map of LaTeX-like strings to format the counter.
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/** For each language, the string is similar to what one gets
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* in LaTeX when using "\the<counter>". The \c in_appendix
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* bool tells whether we want the version shown in an
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* appendix. This version does not contain any \\the<counter>
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* expression.
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*/
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typedef std::map<std::string, docstring> StringMap;
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StringMap & flatLabelStrings(bool in_appendix) const;
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private:
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///
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int value_;
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/// This is actually one less than the initial value, since the
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/// counter is always stepped before being used.
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int initial_value_;
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/// contains master counter name.
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/** The master counter is the counter that, if stepped
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* (incremented) zeroes this counter. E.g. "subsection"'s
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* master is "section".
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*/
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docstring master_;
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/// Contains a LaTeX-like string to format the counter.
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docstring labelstring_;
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/// The same as labelstring_, but in appendices.
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docstring labelstringappendix_;
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/// Similar, but used for formatted references in XHTML output
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docstring prettyformat_;
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/// Cache of the labelstring with \\the<counter> expressions expanded,
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/// indexed by language
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mutable StringMap flatlabelstring_;
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/// Cache of the appendix labelstring with \\the<counter> expressions expanded,
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/// indexed by language
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mutable StringMap flatlabelstringappendix_;
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};
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/// This is a class of (La)TeX type counters.
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/// Every instantiation is an array of counters of type Counter.
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class Counters {
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public:
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/// NOTE Do not call this in an attempt to clear the counters.
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/// That will wipe out all the information we have about them
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/// from the document class (e.g., which ones are defined).
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/// Instead, call Counters::reset().
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Counters();
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/// Add new counter newc having masterc as its master,
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/// ls as its label, and lsa as its appendix label.
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void newCounter(docstring const & newc,
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docstring const & masterc,
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docstring const & ls,
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docstring const & lsa);
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/// Checks whether the given counter exists.
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bool hasCounter(docstring const & c) const;
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/// reads the counter name
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/// \param makeNew whether to make a new counter if one
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/// doesn't already exist
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/// \return true on success
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bool read(Lexer & lex, docstring const & name, bool makenew);
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///
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void set(docstring const & ctr, int val);
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///
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void addto(docstring const & ctr, int val);
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///
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int value(docstring const & ctr) const;
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/// Reset recursively all the counters that are slaves of the one named by \c ctr.
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void resetSlaves(docstring const & ctr);
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/// Increment by one master of counter named by \c ctr.
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/// This also resets the counter named by \c ctr.
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/// \param utype determines whether we track the counters.
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void stepMaster(docstring const & ctr, UpdateType utype);
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/// Increment by one counter named by \c ctr, and zeroes slave
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/// counter(s) for which it is the master.
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/// \param utype determines whether we track the counters.
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void step(docstring const & ctr, UpdateType utype);
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/// Reset all counters, and all the internal data structures
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/// used for keeping track of their values.
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void reset();
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/// Reset counters matched by match string.
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void reset(docstring const & match);
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/// Remove counter \p cnt.
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bool remove(docstring const & cnt);
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/// Copy counters whose name matches match from the &from to
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/// the &to array of counters. Empty string matches all.
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void copy(Counters & from, Counters & to,
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docstring const & match = docstring());
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/** returns the expanded string representation of counter \c
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* c. The \c lang code is used to translate the string.
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*/
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docstring theCounter(docstring const & c,
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std::string const & lang) const;
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/** Replace in \c format all the LaTeX-like macros that depend
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* on counters. The \c lang code is used to translate the
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* string.
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*/
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docstring counterLabel(docstring const & format,
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std::string const & lang) const;
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/// returns a formatted version of the counter, using the
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/// format given by Counter::prettyFormat().
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docstring prettyCounter(docstring const & cntr,
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std::string const & lang) const;
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/// Are we in appendix?
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bool appendix() const { return appendix_; }
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/// Set the state variable indicating whether we are in appendix.
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void appendix(bool a) { appendix_ = a; }
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/// Returns the current enclosing float.
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std::string const & current_float() const { return current_float_; }
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/// Sets the current enclosing float.
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void current_float(std::string const & f) { current_float_ = f; }
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/// Are we in a subfloat?
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bool isSubfloat() const { return subfloat_; }
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/// Set the state variable indicating whether we are in a subfloat.
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void isSubfloat(bool s) { subfloat_ = s; }
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/// Are we in a longtable?
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bool isLongtable() const { return longtable_; }
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/// Set the state variable indicating whether we are in a longtable.
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void isLongtable(bool s) { longtable_ = s; }
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/// \name refstepcounter
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// @{
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/// The currently active counter, so far as references go.
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/// We're trying to track \refstepcounter in LaTeX, more or less.
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/// Note that this may be empty.
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docstring currentCounter() const;
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/// Called during updateBuffer() as we go through various paragraphs,
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/// to track the layouts as we go through.
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void setActiveLayout(Layout const & lay);
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/// Also for updateBuffer().
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/// Call this when entering things like footnotes, where there is now
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/// no "last layout" and we want to restore the "last layout" on exit.
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void clearLastLayout() { layout_stack_.push_back(0); }
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/// Call this when exiting things like footnotes.
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void restoreLastLayout() { layout_stack_.pop_back(); }
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///
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void saveLastCounter()
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{ counter_stack_.push_back(counter_stack_.back()); }
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///
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void restoreLastCounter() { counter_stack_.pop_back(); }
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// @}
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private:
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/** expands recursively any \\the<counter> macro in the
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* labelstring of \c counter. The \c lang code is used to
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* translate the string.
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*/
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docstring flattenLabelString(docstring const & counter, bool in_appendix,
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std::string const &lang,
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std::vector<docstring> & callers) const;
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/// Returns the value of the counter according to the
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/// numbering scheme numbertype.
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/** Available numbering schemes are arabic (1, 2,...), roman
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* (i, ii,...), Roman (I, II,...), alph (a, b,...), Alpha (A,
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* B,...) and hebrew.
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*/
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docstring labelItem(docstring const & ctr,
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docstring const & numbertype) const;
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/// Used for managing the counter_stack_.
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// @{
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void beginEnvironment();
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void endEnvironment();
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// @}
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/// Maps counter (layout) names to actual counters.
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typedef std::map<docstring, Counter> CounterList;
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/// Instantiate.
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CounterList counterList_;
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/// Are we in an appendix?
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bool appendix_;
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/// The current enclosing float.
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std::string current_float_;
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/// Are we in a subfloat?
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bool subfloat_;
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/// Are we in a longtable?
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bool longtable_;
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/// Used to keep track of active counters.
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std::vector<docstring> counter_stack_;
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/// Same, but for last layout.
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std::vector<Layout const *> layout_stack_;
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};
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} // namespace lyx
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#endif
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