From 13d61ec39f89d54b2c998a099a2b51fada97b8b7 Mon Sep 17 00:00:00 2001
From: David Anderson <dvander@alliedmods.net>
Date: Tue, 14 Nov 2006 08:45:21 +0000
Subject: [PATCH] added implementation to the forward manager

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%40191
---
 core/interfaces/IForwardSys.h | 11 ++++
 core/systems/ForwardSys.cpp   | 98 ++++++++++++++++++++++++++++++++++-
 core/systems/ForwardSys.h     | 27 ++++++++++
 3 files changed, 134 insertions(+), 2 deletions(-)

diff --git a/core/interfaces/IForwardSys.h b/core/interfaces/IForwardSys.h
index e815aee4..d4732899 100644
--- a/core/interfaces/IForwardSys.h
+++ b/core/interfaces/IForwardSys.h
@@ -98,6 +98,10 @@ namespace SourceMod
 	 */
 	class IForward : public ICallable
 	{
+	public:
+		virtual ~IForward()
+		{
+		}
 	public:
 		/**
 		 * @brief Returns the name of the forward.
@@ -271,6 +275,13 @@ namespace SourceMod
 		 * @return				IForward pointer, or NULL if none found matching the name.
 		 */
 		virtual IForward *FindForward(const char *name, IChangeableForward **ifchng) =0;
+
+		/**
+		 * @brief Frees and destroys a forward object.
+		 *
+		 * @param forward		An IForward created by CreateForward() or CreateForwardEx().
+		 */
+		virtual void ReleaseForward(IForward *forward) =0;
 	};
 };
 
diff --git a/core/systems/ForwardSys.cpp b/core/systems/ForwardSys.cpp
index 833d5321..ad2a8174 100644
--- a/core/systems/ForwardSys.cpp
+++ b/core/systems/ForwardSys.cpp
@@ -2,6 +2,8 @@
 #include "ForwardSys.h"
 #include "PluginSys.h"
 
+CForwardManager g_Forwards;
+
 /**
  * Gensis turns to its source, reduction occurs stepwise although the essence is all one.
  * End of line.  FTL system check.
@@ -12,7 +14,7 @@
  * NORMAL FUNCTIONS:
  * X Push cells
  * X Push cells byref (copyback tested = yes)
- * - Push floats (copyback tested = ??)
+ * - Push floats
  * - Push floats byref (copyback tested = ??)
  * - Push arrays  (copyback tested = ??)
  * - Push strings (copyback tested = ??)
@@ -26,6 +28,98 @@
  * - Push vararg strings (copyback tested = ??)
  */
 
+IForward *CForwardManager::CreateForward(const char *name, ExecType et, unsigned int num_params, ParamType *types, ...)
+{
+	CForward *fwd;
+	va_list ap;
+	va_start(ap, types);
+	
+	fwd = CForward::CreateForward(name, et, num_params, types, ap);
+
+	va_end(ap);
+
+	return fwd;
+}
+
+IChangeableForward *CForwardManager::CreateForwardEx(const char *name, ExecType et, int num_params, ParamType *types, ...)
+{
+	CForward *fwd;
+	va_list ap;
+	va_start(ap, types);
+
+	fwd = CForward::CreateForward(name, et, num_params, types, ap);
+
+	va_end(ap);
+
+	return fwd;
+}
+
+IForward *CForwardManager::FindForward(const char *name, IChangeableForward **ifchng)
+{
+	List<CForward *>::iterator iter;
+	CForward *fwd;
+
+	for (iter=m_managed.begin(); iter!=m_managed.end(); iter++)
+	{
+		fwd = (*iter);
+		if (strcmp(fwd->GetForwardName(), name) == 0)
+		{
+			if (ifchng)
+			{
+				*ifchng = NULL;
+			}
+			return fwd;
+		}
+	}
+
+	for (iter=m_unmanaged.begin(); iter!=m_unmanaged.end(); iter++)
+	{
+		fwd = (*iter);
+		if (strcmp(fwd->GetForwardName(), name) == 0)
+		{
+			if (ifchng)
+			{
+				*ifchng = fwd;
+			}
+			return fwd;
+		}
+	}
+
+	if (ifchng)
+	{
+		*ifchng = NULL;
+	}
+
+	return NULL;
+}
+
+void CForwardManager::ReleaseForward(IForward *forward)
+{
+	ForwardFree(static_cast<CForward *>(forward));
+}
+
+void CForwardManager::ForwardFree(CForward *fwd)
+{
+	m_FreeForwards.push(fwd);
+}
+
+CForward *CForwardManager::ForwardMake()
+{
+	CForward *fwd;
+	if (m_FreeForwards.empty())
+	{
+		fwd = new CForward;
+	} else {
+		fwd = m_FreeForwards.front();
+		m_FreeForwards.pop();
+	}
+	return fwd;
+}
+
+/*************************************
+ * ACTUAL FORWARD API IMPLEMENTATION *
+ *************************************/
+
 CForward *CForward::CreateForward(const char *name, ExecType et, unsigned int num_params, ParamType *types, va_list ap)
 {
 	ParamType _types[SP_MAX_EXEC_PARAMS];
@@ -62,7 +156,7 @@ CForward *CForward::CreateForward(const char *name, ExecType et, unsigned int nu
 		return NULL;
 	}
 
-	CForward *pForward = new CForward;
+	CForward *pForward = g_Forwards.ForwardMake();
 	pForward->m_curparam = 0;
 	pForward->m_ExecType = et;
 	snprintf(pForward->m_name, FORWARDS_NAME_MAX, "%s", name ? name : "");
diff --git a/core/systems/ForwardSys.h b/core/systems/ForwardSys.h
index 31a4089d..b286284b 100644
--- a/core/systems/ForwardSys.h
+++ b/core/systems/ForwardSys.h
@@ -81,4 +81,31 @@ protected:
 	int m_errstate;
 };
 
+class CForwardManager : public IForwardManager
+{
+	friend class CForward;
+public:
+	virtual IForward *CreateForward(const char *name, 
+		ExecType et, 
+		unsigned int num_params, 
+		ParamType *types, 
+		...);
+	virtual IChangeableForward *CreateForwardEx(const char *name, 
+		ExecType et, 
+		int num_params, 
+		ParamType *types, 
+		...);
+	virtual IForward *FindForward(const char *name, IChangeableForward **ifchng);
+	virtual void ReleaseForward(IForward *forward);
+protected:
+	CForward *ForwardMake();
+	void ForwardFree(CForward *fwd);
+private:
+	CStack<CForward *> m_FreeForwards;
+	List<CForward *> m_managed;
+	List<CForward *> m_unmanaged;
+};
+
+extern CForwardManager g_Forwards;
+
 #endif //_INCLUDE_SOURCEMOD_FORWARDSYSTEM_H_