* high performance text completion with weighted btrees to get pseudo

  random-access (i.e. O(log n)) to the n-th element in a list/set. Try
  it with 1000000 keys ... no problem.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@23213 a592a061-630c-0410-9148-cb99ea01b6c8

diff --git a/development/scons/scons_manifest.py b/development/scons/scons_manifest.py
index e98ed90193d242004179eeedc909fcefa6e7106a..485d5ae27ac6f8807d434a6d69e6a3a8c56149ee 100644 (file)
--- a/development/scons/scons_manifest.py
+++ b/development/scons/scons_manifest.py
@@ -138,6 +138,7 @@ src_header_files = Split('''
     sgml.h
     update_flags.h
     version.h
+    WordList.h
 ''')
 
 
@@ -234,6 +235,7 @@ src_pre_files = Split('''
     rowpainter.cpp
     sgml.cpp
     version.cpp
+    WordList.cpp
 ''')
 
 

diff --git a/src/Makefile.am b/src/Makefile.am
index e30ac8fad692114c9ed333ed19e59c256fbb503d..dd76a4c2cc4432aa5ea7c59f8529b66a87820917 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -127,6 +127,7 @@ SOURCEFILESCORE = \
        lengthcommon.cpp \
        Lexer.cpp \
        LyX.cpp \
+       LyXAction.cpp
        lyxfind.cpp \
        LyXFunc.cpp \
        LyXRC.cpp \
@@ -142,6 +143,7 @@ SOURCEFILESCORE = \
        output_plaintext.cpp \
        Paragraph.cpp \
        paragraph_funcs.cpp \
+       ParagraphMetrics.cpp \
        ParagraphParameters.cpp \
        ParIterator.cpp \
        PDFOptions.cpp \
@@ -165,8 +167,7 @@ SOURCEFILESCORE = \
        VCBackend.cpp \
        version.cpp \
        VSpace.cpp \
-       ParagraphMetrics.cpp \
-       LyXAction.cpp
+       WordList.cpp
 
 HEADERFILESCORE = \
        Author.h \
@@ -270,8 +271,9 @@ HEADERFILESCORE = \
        update_flags.h \
        VCBackend.h \
        version.h \
+       VSpace.h \
        WordLangTuple.h \
-       VSpace.h
+       WordList.h
 
 STANDALONEFILES = \
        Layout.cpp \

diff --git a/src/WordList.cpp b/src/WordList.cpp
new file mode 100644 (file)
index 0000000..0bb0662
--- /dev/null
+++ b/src/WordList.cpp
@@ -0,0 +1,80 @@
+/**
+ * \file GuiCompleter.cpp
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author Stefan Schimanski
+ *
+ * Full author contact details are available in file CREDITS.
+ */
+
+#include <config.h>
+
+#include <boost/assert.hpp>
+
+#include <support/convert.h>
+#include <support/debug.h>
+#include <support/docstring.h>
+#include <support/weighted_btree.h>
+
+#include <WordList.h>
+
+#include <algorithm>
+#include <map>
+#include <iostream>
+#include <set>
+
+namespace lyx {
+
+///
+struct WordList::Impl {
+       ///
+       size_t c_;
+       ///
+       typedef stx::weighted_btree<docstring, size_t> Words;
+       ///
+       Words words_;
+};
+
+
+WordList::WordList()
+{
+       d = new Impl;
+       d->c_ = 0;
+
+#if 0
+       for (size_t i = 1000000; i > 0; --i) {
+               d->words_.insert("a" + convert<docstring>(i), size_t(1), stx::Void());
+       }
+#endif
+}
+
+
+WordList::~WordList()
+{
+       delete d;
+}
+
+
+docstring const & WordList::word(size_t idx) const
+{
+       Impl::Words::const_iterator it
+       = d->words_.find_summed_weight(idx);
+       BOOST_ASSERT(it != d->words_.end());
+       return it->first;
+}
+
+
+size_t WordList::size() const
+{
+       return d->words_.size();
+}
+
+
+void WordList::insert(docstring const & w)
+{
+       d->words_.insert(w, size_t(1), stx::Void());
+}
+
+       
+} // namespace lyx
\ No newline at end of file

diff --git a/src/WordList.h b/src/WordList.h
new file mode 100644 (file)
index 0000000..b802cf0
--- /dev/null
+++ b/src/WordList.h
@@ -0,0 +1,40 @@
+// -*- C++ -*-
+/**
+ * \file WordList.h
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author Stefan Schimanski
+ *
+ * Full author contact details are available in file CREDITS.
+ */
+
+#ifndef WORDLIST_H
+#define WORDLIST_H
+
+#include "support/docstring.h"
+
+namespace lyx {
+
+class WordList {
+public:
+       ///
+       WordList();
+       ///
+       ~WordList();
+
+       ///
+       docstring const & word(size_t idx) const;
+       ///
+       size_t size() const;
+       ///
+       void insert(docstring const & w);
+
+private:
+       class Impl;
+       Impl * d;
+};
+
+} // namespace lyx
+
+#endif // WORDLIST_H