From f60042942473640e60136e7a43d2bc6a4c824a26 Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Mon, 14 Nov 2011 20:38:56 +0000
Subject: (svn r23215) -Codechange: stricter type safety for CommandFlags

---
 src/command.cpp    | 6 +++---
 src/command_func.h | 4 ++--
 src/command_type.h | 9 +++++----
 3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/src/command.cpp b/src/command.cpp
index 4b6035109..d521cda0e 100644
--- a/src/command.cpp
+++ b/src/command.cpp
@@ -173,7 +173,7 @@ CommandProc CmdSetVehicleOnTime;
 CommandProc CmdAutofillTimetable;
 CommandProc CmdSetTimetableStart;
 
-#define DEF_CMD(proc, flags, type) {proc, #proc, flags, type}
+#define DEF_CMD(proc, flags, type) {proc, #proc, (CommandFlags)flags, type}
 
 /**
  * The master command table
@@ -327,7 +327,7 @@ bool IsValidCommand(uint32 cmd)
  * @param cmd The integer value of the command
  * @return The flags for this command
  */
-byte GetCommandFlags(uint32 cmd)
+CommandFlags GetCommandFlags(uint32 cmd)
 {
 	assert(IsValidCommand(cmd));
 
@@ -590,7 +590,7 @@ CommandCost DoCommandPInternal(TileIndex tile, uint32 p1, uint32 p2, uint32 cmd,
 	assert(proc != NULL);
 
 	/* Command flags are used internally */
-	uint cmd_flags = GetCommandFlags(cmd);
+	CommandFlags cmd_flags = GetCommandFlags(cmd);
 	/* Flags get send to the DoCommand */
 	DoCommandFlag flags = CommandFlagsToDCFlags(cmd_flags);
 
diff --git a/src/command_func.h b/src/command_func.h
index c741c7924..ef7971a0b 100644
--- a/src/command_func.h
+++ b/src/command_func.h
@@ -49,7 +49,7 @@ void NetworkSendCommand(TileIndex tile, uint32 p1, uint32 p2, uint32 cmd, Comman
 extern Money _additional_cash_required;
 
 bool IsValidCommand(uint32 cmd);
-byte GetCommandFlags(uint32 cmd);
+CommandFlags GetCommandFlags(uint32 cmd);
 const char *GetCommandName(uint32 cmd);
 Money GetAvailableMoneyForCommand();
 bool IsCommandAllowedWhilePaused(uint32 cmd);
@@ -59,7 +59,7 @@ bool IsCommandAllowedWhilePaused(uint32 cmd);
  * @param cmd_flags Flags from GetCommandFlags
  * @return flags for DoCommand
  */
-static inline DoCommandFlag CommandFlagsToDCFlags(uint cmd_flags)
+static inline DoCommandFlag CommandFlagsToDCFlags(CommandFlags cmd_flags)
 {
 	DoCommandFlag flags = DC_NONE;
 	if (cmd_flags & CMD_NO_WATER) flags |= DC_NO_WATER;
diff --git a/src/command_type.h b/src/command_type.h
index 606bfc287..f085edf07 100644
--- a/src/command_type.h
+++ b/src/command_type.h
@@ -355,6 +355,7 @@ enum CommandFlags {
 	CMD_NO_WATER  = 0x40, ///< set the DC_NO_WATER flag on this command
 	CMD_CLIENT_ID = 0x80, ///< set p2 with the ClientID of the sending client.
 };
+DECLARE_ENUM_AS_BIT_SET(CommandFlags)
 
 /** Types of commands we have. */
 enum CommandType {
@@ -406,10 +407,10 @@ typedef CommandCost CommandProc(TileIndex tile, DoCommandFlag flags, uint32 p1,
  * the #CMD_AUTO, #CMD_OFFLINE and #CMD_SERVER values.
  */
 struct Command {
-	CommandProc *proc; ///< The procedure to actually executing
-	const char *name;  ///< A human readable name for the procedure
-	byte flags;        ///< The (command) flags to that apply to this command
-	CommandType type;  ///< The type of command.
+	CommandProc *proc;  ///< The procedure to actually executing
+	const char *name;   ///< A human readable name for the procedure
+	CommandFlags flags; ///< The (command) flags to that apply to this command
+	CommandType type;   ///< The type of command.
 };
 
 /**
-- 
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