From 56146a93460bd4c56eaecc459ccd36aa0313ff9b Mon Sep 17 00:00:00 2001
From: Richard Heck <rgheck@comcast.net>
Date: Fri, 14 Aug 2009 15:46:10 +0000
Subject: [PATCH] Constify a bunch of stuff that can be const.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@31037 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/ModuleList.cpp                | 19 +++++++++++++++----
 src/ModuleList.h                  | 12 ++++++++----
 src/frontends/qt4/GuiDocument.cpp |  4 ++--
 3 files changed, 25 insertions(+), 10 deletions(-)

diff --git a/src/ModuleList.cpp b/src/ModuleList.cpp
index 34c47b7cf3..85066a899e 100644
--- a/src/ModuleList.cpp
+++ b/src/ModuleList.cpp
@@ -45,7 +45,7 @@ LyXModule::LyXModule(string const & n, string const & i,
 }
 
 
-bool LyXModule::isAvailable() {
+bool LyXModule::isAvailable() const {
 #ifdef TEX2LYX
 	return true;
 #else
@@ -242,15 +242,26 @@ LyXModuleList::iterator ModuleList::end()
 }
 
 
-LyXModule * ModuleList::operator[](string const & str)
+LyXModule const * ModuleList::operator[](string const & str) const
 {
-	LyXModuleList::iterator it = modlist_.begin();
+	LyXModuleList::const_iterator it = modlist_.begin();
 	for (; it != modlist_.end(); ++it)
 		if (it->getID() == str) {
-			LyXModule & mod = *it;
+			LyXModule const & mod = *it;
 			return &mod;
 		}
 	return 0;
 }
 
+LyXModule * ModuleList::operator[](string const & str)
+{
+	LyXModuleList::iterator it = modlist_.begin();
+	for (; it != modlist_.end(); ++it)
+		if (it->getID() == str) {
+		LyXModule & mod = *it;
+		return &mod;
+		}
+		return 0;
+}
+
 } // namespace lyx
diff --git a/src/ModuleList.h b/src/ModuleList.h
index d79138f213..c9a6f1f4d7 100644
--- a/src/ModuleList.h
+++ b/src/ModuleList.h
@@ -57,7 +57,7 @@ public:
 	          std::vector<std::string> const & excludes,
 	          std::string const & catgy);
 	/// whether the required packages are available
-	bool isAvailable();
+	bool isAvailable() const;
 	///
 	std::string const & getName() const { return name_; }
 	///
@@ -102,10 +102,12 @@ private:
 	std::vector<std::string> excluded_modules_;
 	/// Category, also used in the UI
 	std::string category_;
+	// these are mutable because they are used to cache the results
+	// or an otherwise const operation.
 	///
-	bool checked_;
+	mutable bool checked_;
 	///
-	bool available_;
+	mutable bool available_;
 };
 
 typedef std::vector<LyXModule> LyXModuleList;
@@ -132,8 +134,10 @@ public:
 	bool empty() const { return modlist_.empty(); }
 	/// Returns a pointer to the LyXModule with filename str.
 	/// Returns a null pointer if no such module is found.
+	LyXModule const * operator[](std::string const & str) const;
+	/// 
 	LyXModule * operator[](std::string const & str);
-private:
+	private:
 	/// noncopyable
 	ModuleList(ModuleList const &);
 	///
diff --git a/src/frontends/qt4/GuiDocument.cpp b/src/frontends/qt4/GuiDocument.cpp
index 39ee411fae..b62b415c22 100644
--- a/src/frontends/qt4/GuiDocument.cpp
+++ b/src/frontends/qt4/GuiDocument.cpp
@@ -243,7 +243,7 @@ vector<string> getPackageList(string const & modName)
 
 bool isModuleAvailable(string const & modName)
 {
-	LyXModule * mod = theModuleList[modName];
+	LyXModule const * const mod = theModuleList[modName];
 	if (!mod)
 		return false;
 	return mod->isAvailable();
@@ -2694,7 +2694,7 @@ list<GuiDocument::modInfoStruct> const
 	for (; it != end; ++it) {
 		modInfoStruct m;
 		m.id = *it;
-		LyXModule * mod = theModuleList[*it];
+		LyXModule const * const mod = theModuleList[*it];
 		if (mod)
 			// FIXME Unicode
 			m.name = toqstr(translateIfPossible(from_utf8(mod->getName())));
-- 
2.39.2