From 198a291007cd218066124c2ca3a88c872f880a58 Mon Sep 17 00:00:00 2001
From: randomdan <randomdan@localhost>
Date: Tue, 14 Feb 2012 14:39:47 +0000
Subject: Pull the script location back into the core and add support for
 caching of parsed script documents

---
 project2/common/environment.cpp  | 20 ++++++++++++++++----
 project2/common/environment.h    |  4 ++++
 project2/common/scripts.h        |  1 +
 project2/xml/xmlScriptParser.cpp | 20 +++++++++-----------
 project2/xml/xmlScriptParser.h   |  1 +
 5 files changed, 31 insertions(+), 15 deletions(-)

diff --git a/project2/common/environment.cpp b/project2/common/environment.cpp
index c0f84a2..9d79ca0 100644
--- a/project2/common/environment.cpp
+++ b/project2/common/environment.cpp
@@ -6,6 +6,7 @@
 #include <stdio.h>
 #include <fstream>
 #include <boost/filesystem/convenience.hpp>
+#include <boost/tuple/tuple_comparison.hpp>
 #include <boost/foreach.hpp>
 #include <boost/bind.hpp>
 
@@ -109,11 +110,22 @@ ScriptReaderPtr
 Environment::resolveScript(const std::string & group, const std::string & name, bool ii) const
 {
 	typedef std::map<std::string, boost::shared_ptr<ScriptReaderLoader> > ReaderLoaders;
-	BOOST_FOREACH(const ReaderLoaders::value_type & rl, *LoaderBase::objLoaders<ScriptReaderLoader>()) {
-		ScriptReaderPtr rs = rl.second->resolveScript(group, name);
-		if (rs) {
-			return rs;
+	boost::filesystem::path e(name);
+	while (!e.empty()) {
+		ScriptKey sk(group, e.string());
+		ScriptCache::const_iterator i = scriptCache.find(sk);
+		if (i != scriptCache.end() && i->second->isCurrent()) {
+			return i->second;
 		}
+		else {
+			BOOST_FOREACH(const ReaderLoaders::value_type & rl, *LoaderBase::objLoaders<ScriptReaderLoader>()) {
+				ScriptReaderPtr rs = rl.second->resolveScript(group, e.string());
+				if (rs) {
+					return (scriptCache[sk] = rs);
+				}
+			}
+		}
+		e = e.parent_path();
 	}
 	if (ii) {
 		throw DependencyNotFound(group, name);
diff --git a/project2/common/environment.h b/project2/common/environment.h
index 944010a..accbb80 100644
--- a/project2/common/environment.h
+++ b/project2/common/environment.h
@@ -4,6 +4,7 @@
 #include <string>
 #include <glibmm/ustring.h>
 #include <boost/function.hpp>
+#include <boost/tuple/tuple.hpp>
 #include <boost/filesystem/path.hpp>
 #include "optionsSource.h"
 #include "exceptions.h"
@@ -40,6 +41,9 @@ class Environment {
 		int slLevel;
 		typedef std::vector<OptionsSourcePtr> ConfigsMap;
 		ConfigsMap configs;
+		typedef boost::tuple<const std::string, const std::string> ScriptKey;
+		typedef std::map<ScriptKey, ScriptReaderPtr> ScriptCache;
+		mutable ScriptCache scriptCache;
 
 	public:
 		std::string datasourceRoot;
diff --git a/project2/common/scripts.h b/project2/common/scripts.h
index 497ea6d..020cf50 100644
--- a/project2/common/scripts.h
+++ b/project2/common/scripts.h
@@ -53,6 +53,7 @@ class ScriptReader : public virtual IntrusivePtrBase {
 	public:
 		virtual ScriptNodePtr root() const = 0;
 		virtual void load(const CommonObjects *, bool childrenOnly) const;
+		virtual bool isCurrent() const = 0;
 		mutable LoaderBase loader;
 };
 
diff --git a/project2/xml/xmlScriptParser.cpp b/project2/xml/xmlScriptParser.cpp
index 47db20f..abb4cbe 100644
--- a/project2/xml/xmlScriptParser.cpp
+++ b/project2/xml/xmlScriptParser.cpp
@@ -37,20 +37,18 @@ XmlScriptParser::load(const CommonObjects * co, bool childrenOnly) const
 	_root.reset();
 }
 
+bool
+XmlScriptParser::isCurrent() const
+{
+	return false;
+}
+
 class XmlScriptReaderLoader : public ScriptReaderLoader {
 	public:
 		ScriptReaderPtr resolveScript(const std::string & group, const std::string & name) const {
-			boost::filesystem::path script(boost::filesystem::current_path() / group);
-			BOOST_FOREACH(const boost::filesystem::path & e, boost::filesystem::path(name)) {
-				if (boost::filesystem::is_directory(script / e)) {
-					script /= e;
-				}
-				else {
-					boost::filesystem::path path = (script / e).string() + ".xml";
-					if (boost::filesystem::is_regular_file(path)) {
-						return new XmlScriptParser(path);
-					}
-				}
+			boost::filesystem::path script(boost::filesystem::current_path() / group / (name + ".xml"));
+			if (boost::filesystem::is_regular_file(script)) {
+				return new XmlScriptParser(script);
 			}
 			return NULL;
 		}
diff --git a/project2/xml/xmlScriptParser.h b/project2/xml/xmlScriptParser.h
index 39e27bc..c85795a 100644
--- a/project2/xml/xmlScriptParser.h
+++ b/project2/xml/xmlScriptParser.h
@@ -40,6 +40,7 @@ class XmlScriptParser : public xmlpp::DomParser, public ScriptReader {
 		XmlScriptParser(const boost::filesystem::path & file);
 		ScriptNodePtr root() const;
 		void load(const CommonObjects *, bool childrenOnly) const;
+		bool isCurrent() const;
 	private:
 		mutable ScriptNodePtr _root;
 };
-- 
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