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Command

概要

名前空間にあるそれぞれのコマンドの構造体。 

 /*
  * Flag bits for commands.
  *
  * CMD_IS_DELETED -		Means that the command is in the process of
  *				being deleted (its deleteProc is currently
  *				executing). Other attempts to delete the
  *				command should be ignored.
  * CMD_TRACE_ACTIVE -		1 means that trace processing is currently
  *				underway for a rename/delete change. See the
  *				two flags below for which is currently being
  *				processed.
  * CMD_HAS_EXEC_TRACES -	1 means that this command has at least one
  *				execution trace (as opposed to simple
  *				delete/rename traces) in its tracePtr list.
  * TCL_TRACE_RENAME -		A rename trace is in progress. Further
  *				recursive renames will not be traced.
  * TCL_TRACE_DELETE -		A delete trace is in progress. Further
  *				recursive deletes will not be traced.
  * (these last two flags are defined in tcl.h)
  */
 
 #define CMD_IS_DELETED		    0x1
 #define CMD_TRACE_ACTIVE	    0x2
 #define CMD_HAS_EXEC_TRACES	    0x4


typedef Tcl_CmdProc *TclCmdProcType;
typedef Tcl_ObjCmdProc *TclObjCmdProcType;

　typedef void (Tcl_CmdDeleteProc) _ANSI_ARGS_*1;


メンバー

  • Tcl_HashEntry *hPtr; このコマンドを参照しているハッシュテーブルへのポインタ。名前空間のコマンドテーブルか、hidden command のコマンドテーブルのどちらか。NULLは、ハッシュテーブルのエントリーが削除済みであることを示す。
  • Namespace *nsPtr; コマンドを含む名前空間へのポインタ
  • int refCount; リファレンスカウント
  • int cmdEpoch; リファレンスが無効になるとインクリメントする
  • CompileProc *compileProc; コンパイルコマンドを呼び出す手続き。コンパイル手続きが無い場合NULL。
  • Tcl_ObjCmdProc *objProc; オブジェクト形式の手続き
  • ClientData objClientData; Arbitrary value passed to object proc.
  • Tcl_CmdProc *proc; 文字列ベースの手続き
  • ClientData clientData; /* Arbitrary value passed to string proc. */
  • Tcl_CmdDeleteProc *deleteProc; コマンドが削除されるときに呼び出す関数。
  • ClientData deleteData; /* Arbitrary value passed to deleteProc. */
  • int flags; コマンドのフラグ
  • ImportRef *importRefPtr; このコマンドがimportされたとき、別の名前空間で作られたコマンドのList
  • CommandTrace *tracePtr; トレース用リストの先頭を指すポインタ

ソース

 typedef struct Command {
     [[Tcl_HashEntry]] *hPtr;	/* Pointer to the hash table entry that refers
 				 * to this command. The hash table is either a
 				 * namespace's command table or an
 				 * interpreter's hidden command table. This
 				 * pointer is used to get a command's name
 				 * from its Tcl_Command handle. NULL means
 				 * that the hash table entry has been removed
 				 * already (this can happen if deleteProc
 				 * causes the command to be deleted or
 				 * recreated). */
     [[Namespace]] *nsPtr;		/* Points to the namespace containing this
 				 * command. */
     int refCount;		/* 1 if in command hashtable plus 1 for each
 				 * reference from a CmdName Tcl object
 				 * representing a command's name in a ByteCode
 				 * instruction sequence. This structure can be
 				 * freed when refCount becomes zero. */
     int cmdEpoch;		/* Incremented to invalidate any references
 				 * that point to this command when it is
 				 * renamed, deleted, hidden, or exposed. */
     CompileProc *compileProc;	/* Procedure called to compile command. NULL
 				 * if no compile proc exists for command. */
     Tcl_ObjCmdProc *objProc;	/* Object-based command procedure. */
     ClientData objClientData;	/* Arbitrary value passed to object proc. */
     Tcl_CmdProc *proc;		/* String-based command procedure. */
     ClientData clientData;	/* Arbitrary value passed to string proc. */
     Tcl_CmdDeleteProc *deleteProc;
 				/* Procedure invoked when deleting command to,
 				 * e.g., free all client data. */
     ClientData deleteData;	/* Arbitrary value passed to deleteProc. */
     int flags;			/* Miscellaneous bits of information about
 				 * command. See below for definitions. */
     [[ImportRef]] *importRefPtr;	/* List of each imported Command created in
 				 * another namespace when this command is
 				 * imported. These imported commands redirect
 				 * invocations back to this command. The list
 				 * is used to remove all those imported
 				 * commands when deleting this "real"
 				 * command. */
     [[CommandTrace]] *tracePtr;	/* First in list of all traces set for this
 				 * command. */
 } Command;
 
 /*
  * Flag bits for commands.
  *
  * CMD_IS_DELETED -		Means that the command is in the process of
  *				being deleted (its deleteProc is currently
  *				executing). Other attempts to delete the
  *				command should be ignored.
  * CMD_TRACE_ACTIVE -		1 means that trace processing is currently
  *				underway for a rename/delete change. See the
  *				two flags below for which is currently being
  *				processed.
  * CMD_HAS_EXEC_TRACES -	1 means that this command has at least one
  *				execution trace (as opposed to simple
  *				delete/rename traces) in its tracePtr list.
  * TCL_TRACE_RENAME -		A rename trace is in progress. Further
  *				recursive renames will not be traced.
  * TCL_TRACE_DELETE -		A delete trace is in progress. Further
  *				recursive deletes will not be traced.
  * (these last two flags are defined in tcl.h)
  */
 
 #define CMD_IS_DELETED		    0x1
 #define CMD_TRACE_ACTIVE	    0x2
 #define CMD_HAS_EXEC_TRACES	    0x4
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最終更新：2011年11月03日 13:17