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author | dkf <dkf@noemail.net> | 2012-12-31 02:39:40 (GMT) |
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committer | dkf <dkf@noemail.net> | 2012-12-31 02:39:40 (GMT) |
commit | b9a1d6098ede33adf621c5dd3cdd84cf965668d0 (patch) | |
tree | d6877b1ccb35b9e6c72036640ff67ae649d83c1f /generic/tclEnsemble.c | |
parent | 7660509ae711838b225df4990987ae12bbad6c8c (diff) | |
download | tcl-b9a1d6098ede33adf621c5dd3cdd84cf965668d0.zip tcl-b9a1d6098ede33adf621c5dd3cdd84cf965668d0.tar.gz tcl-b9a1d6098ede33adf621c5dd3cdd84cf965668d0.tar.bz2 |
Working towards more efficient treatment of non-bytecoded ensemble subcommands.
FossilOrigin-Name: 8e445bdbe1575fbdf496375b25a8c5aaa3a1e36e
Diffstat (limited to 'generic/tclEnsemble.c')
-rw-r--r-- | generic/tclEnsemble.c | 81 |
1 files changed, 76 insertions, 5 deletions
diff --git a/generic/tclEnsemble.c b/generic/tclEnsemble.c index b76c603..8f0d4fe 100644 --- a/generic/tclEnsemble.c +++ b/generic/tclEnsemble.c @@ -35,6 +35,14 @@ static void MakeCachedEnsembleCommand(Tcl_Obj *objPtr, static void FreeEnsembleCmdRep(Tcl_Obj *objPtr); static void DupEnsembleCmdRep(Tcl_Obj *objPtr, Tcl_Obj *copyPtr); static void StringOfEnsembleCmdRep(Tcl_Obj *objPtr); +static int CompileToCompiledCommand(Tcl_Interp *interp, + Tcl_Parse *parsePtr, Tcl_Token *tokenPtr, + int len, Tcl_Obj **elems, Command *cmdPtr, + CompileEnv *envPtr); +static int CompileToInvokedCommand(Tcl_Interp *interp, + Tcl_Parse *parsePtr, Tcl_Token *tokenPtr, + int len, Tcl_Obj **elems, Command *cmdPtr, + CompileEnv *envPtr); /* * The lists of subcommands and options for the [namespace ensemble] command. @@ -2734,7 +2742,6 @@ TclCompileEnsemble( Tcl_Token *tokenPtr; Tcl_Obj *mapObj, *subcmdObj, *targetCmdObj, *listObj, **elems; Tcl_Command ensemble = (Tcl_Command) cmdPtr; - Tcl_Parse synthetic; int len, result, flags = 0, i; unsigned numBytes; const char *word; @@ -2920,7 +2927,7 @@ TclCompileEnsemble( if (Tcl_ListObjGetElements(NULL, targetCmdObj, &len, &elems) != TCL_OK) { return TCL_ERROR; } - if (len > 1 && Tcl_IsSafe(interp)) { + if (len > 1 || Tcl_IsSafe(interp)) { return TCL_ERROR; } targetCmdObj = elems[0]; @@ -2928,7 +2935,7 @@ TclCompileEnsemble( Tcl_IncrRefCount(targetCmdObj); cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, targetCmdObj); TclDecrRefCount(targetCmdObj); - if (cmdPtr == NULL || cmdPtr->compileProc == NULL + if (cmdPtr == NULL || cmdPtr->nsPtr->flags & NS_SUPPRESS_COMPILATION || cmdPtr->flags * CMD_HAS_EXEC_TRACES || ((Interp *)interp)->flags & DONT_COMPILE_CMDS_INLINE) { @@ -2942,10 +2949,39 @@ TclCompileEnsemble( /* * Now we've done the mapping process, can now actually try to compile. - * We do this by handing off to the subcommand's actual compiler. But to - * do that, we have to perform some trickery to rewrite the arguments. + * If there is a subcommand compiler and that successfully produces code, + * we'll use that. Otherwise, we fall back to generating opcodes to do the + * invoke at runtime. */ + if (cmdPtr->compileProc != NULL && + CompileToCompiledCommand(interp, parsePtr, tokenPtr, + len, elems, cmdPtr, envPtr) == TCL_OK) { + return TCL_OK; + } + return CompileToInvokedCommand(interp, parsePtr, tokenPtr, + len, elems, cmdPtr, envPtr); +} + +/* + * How to compile a subcommand using its own command compiler. To do that, we + * have to perform some trickery to rewrite the arguments, as compilers *must* + * have parse tokens that refer to addresses in the original script. + */ + +static int +CompileToCompiledCommand( + Tcl_Interp *interp, + Tcl_Parse *parsePtr, + Tcl_Token *tokenPtr, + int len, + Tcl_Obj **elems, + Command *cmdPtr, + CompileEnv *envPtr) /* Holds resulting instructions. */ +{ + Tcl_Parse synthetic; + int result, i; + TclParseInit(interp, NULL, 0, &synthetic); synthetic.numWords = parsePtr->numWords - 2 + len; TclGrowParseTokenArray(&synthetic, 2*len); @@ -3001,6 +3037,41 @@ TclCompileEnsemble( Tcl_FreeParse(&synthetic); return result; } + +static int +CompileToInvokedCommand( + Tcl_Interp *interp, + Tcl_Parse *parsePtr, + Tcl_Token *tokenPtr, + int len, + Tcl_Obj **elems, + Command *cmdPtr, + CompileEnv *envPtr) /* Holds resulting instructions. */ +{ + Tcl_Obj *objPtr = Tcl_NewObj(); + char *bytes; + int length, i, literal; + + if (len != 1) { + return TCL_ERROR; + } + + // TODO: Generate magic (with new instruction) for setting up the ensemble + // rewriting... + + for (i=0,tokenPtr=parsePtr->tokenPtr ; i<parsePtr->numWords ; i++) { + TclCompileTokens(interp, tokenPtr+1, tokenPtr->numComponents, envPtr); + tokenPtr = TokenAfter(tokenPtr); + } + Tcl_GetCommandFullName(interp, (Tcl_Command) cmdPtr, objPtr); + bytes = Tcl_GetStringFromObj(objPtr, &length); + literal = TclRegisterNewCmdLiteral(envPtr, bytes, length); + TclDecrRefCount(objPtr); + TclEmitPush(literal, envPtr); + TclEmitInstInt4(INST_INVOKE_REPLACE, parsePtr->numWords, envPtr); + TclAdjustStackDepth(-1, envPtr); + return TCL_OK; +} /* * Local Variables: |