#define TEXROW_H
#include "support/debug.h"
+#include "support/docstring.h"
#include "support/types.h"
#include <vector>
typedef size_t idx_type;
-/// an individual par id/pos <=> row mapping
-struct TextEntry { int id; pos_type pos; };
+/// Represents the correspondence between paragraphs and the generated
+/// LaTeX file
-/// an individual math id/cell <=> row mapping
-struct MathEntry { uid_type id; idx_type cell; };
+class TexRow {
+public:
+ /// We begin with defining the types of row information we are tracking
+ ///
-/// a container for passing entries around
-struct RowEntry {
- bool is_math;// true iff the union is a math
- union {
- struct TextEntry text;
- struct MathEntry math;
+ /// type of row entries
+ enum RowType {
+ text_entry,
+ math_entry,
+ begin_document
};
-};
+ /// an individual par id/pos <=> row mapping
+ struct TextEntry { int id; pos_type pos; };
-/// Represents the correspondence between paragraphs and the generated
-/// LaTeX file
+ /// an individual math id/cell <=> row mapping
+ struct MathEntry { uid_type id; idx_type cell; };
-class TexRow {
+ /// a container for passing entries around
+ struct RowEntry {
+ RowType type;
+ union {
+ struct TextEntry text;// iff the type is text_entry
+ struct MathEntry math;// iff the type is row_entry
+ struct {} begindocument;// iff the type is begin_document
+ };
+ };
+
+ /// Encapsulates the paragraph and position for later use
+ static RowEntry textEntry(int id, pos_type pos);
+ /// Encapsulates a cell and position for later use
+ static RowEntry mathEntry(uid_type id, idx_type cell);
+ /// Denotes the beginning of the document
+ static RowEntry beginDocument();
+
+ /// Converts a CursorSlice into a RowEntry
+ static RowEntry rowEntryFromCursorSlice(CursorSlice const & slice);
+
+ static const TextEntry text_none;
+ static const RowEntry row_none;
+ /// Returns true if RowEntry is devoid of information
+ static bool isNone(RowEntry entry);
+ /// Returns true if TextEntry is devoid of information
+ static bool isNone(TextEntry entry);
+
+private:
/// id/pos correspondence for a single row
class RowEntryList;
///
TexRow();
-#if !(defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 6))
/// Copy can be expensive and is not usually useful for TexRow.
/// Force explicit copy, prefer move instead. This also prevents
/// move()s from being converted into copy silently.
TexRow(TexRow && other) = default;
TexRow & operator=(TexRow const & other) = default;
TexRow & operator=(TexRow && other) = default;
-# else
- //for gcc 4.6, nothing to do: it's enough to disable implicit copy during
- // dev with more recent versions of gcc.
-#endif
/// Clears structure.
void reset();
- static const TextEntry text_none;
- static const RowEntry row_none;
- /// Returns true if RowEntry is devoid of information
- static bool isNone(RowEntry entry);
- /// Returns true if TextEntry is devoid of information
- static bool isNone(TextEntry entry);
-
- /// Converts a CursorSlice into a RowEntry
- static RowEntry rowEntryFromCursorSlice(CursorSlice const & slice);
- /// Encapsulates the paragraph and position for later use
- static RowEntry textEntry(int id, pos_type pos);
- /// Encapsulates a cell and position for later use
- static RowEntry mathEntry(uid_type id, idx_type cell);
-
/// for debugging purposes
static docstring asString(RowEntry entry);
/**
* getEntriesFromRow - find pids and position for a given row
+ * This is the main algorithm behind reverse-search.
* @param row number to find
* @return a pair of TextEntry denoting the start and end of the position.
* The TextEntry values can be isNone(). If no row is found then the first
/// Finds the best pair of rows for dit
/// returns (-1,-1) if not found.
+ /// This is the main algorithm behind forward-search.
std::pair<int,int> rowFromDocIterator(DocIterator const & dit) const;
/// Finds the best pair of rows for cursor, taking the selection into
void prepend(docstring_list &) const;
private:
- /// true iff same paragraph or math inset
+ /// true iff same paragraph or math inset or begin_document
static bool sameParOrInsetMath(RowEntry entry1, RowEntry entry2);
/// computes the distance in pos or cell index
/// assumes it is the sameParOrInsetMath
docstring str;
///
TexRow texrow;
-#if !(defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ == 6))
/// Copy can be expensive and is not usually useful for TexString.
/// Force explicit copy, prefer move instead. This also prevents
/// move()s from being converted into copy silently.
TexString(TexString && other) = default;
TexString & operator=(TexString const & other) = default;
TexString & operator=(TexString && other) = default;
-# else
- //for gcc 4.6, nothing to do: it's enough to disable implicit copy during
- // dev with more recent versions of gcc.
-#endif
/// Empty TexString
TexString() = default;
/// Texstring containing str and TexRow with enough lines which are empty
};
-bool operator==(RowEntry entry1, RowEntry entry2);
+bool operator==(TexRow::RowEntry entry1, TexRow::RowEntry entry2);
} // namespace lyx
projects / lyx.git / blobdiff