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-rw-r--r--generic/tclCompCmds.c355
1 files changed, 287 insertions, 68 deletions
diff --git a/generic/tclCompCmds.c b/generic/tclCompCmds.c
index 02cf81c..ba85435 100644
--- a/generic/tclCompCmds.c
+++ b/generic/tclCompCmds.c
@@ -12,7 +12,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclCompCmds.c,v 1.127 2007/11/14 23:05:01 dkf Exp $
+ * RCS: @(#) $Id: tclCompCmds.c,v 1.128 2007/11/16 14:11:52 dkf Exp $
*/
#include "tclInt.h"
@@ -224,6 +224,8 @@ TclCompileAppendCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *varTokenPtr, *valueTokenPtr;
@@ -238,7 +240,7 @@ TclCompileAppendCmd(
* append varName == set varName
*/
- return TclCompileSetCmd(interp, parsePtr, envPtr);
+ return TclCompileSetCmd(interp, parsePtr, cmdPtr, envPtr);
} else if (numWords > 3) {
/*
* APPEND instructions currently only handle one value.
@@ -324,6 +326,8 @@ TclCompileBreakCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
if (parsePtr->numWords != 1) {
@@ -361,6 +365,8 @@ TclCompileCatchCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
JumpFixup jumpFixup;
@@ -559,6 +565,8 @@ TclCompileContinueCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
/*
@@ -600,6 +608,8 @@ TclCompileDictCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *tokenPtr;
@@ -1178,6 +1188,8 @@ TclCompileExprCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *firstWordPtr;
@@ -1221,6 +1233,8 @@ TclCompileForCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *startTokenPtr, *testTokenPtr, *nextTokenPtr, *bodyTokenPtr;
@@ -1385,6 +1399,8 @@ TclCompileForeachCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Proc *procPtr = envPtr->procPtr;
@@ -1847,6 +1863,8 @@ TclCompileIfCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
JumpFixupArray jumpFalseFixupArray;
@@ -2162,6 +2180,8 @@ TclCompileIncrCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *varTokenPtr, *incrTokenPtr;
@@ -2279,6 +2299,8 @@ TclCompileLappendCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *varTokenPtr;
@@ -2386,6 +2408,8 @@ TclCompileLassignCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *tokenPtr;
@@ -2499,6 +2523,8 @@ TclCompileLindexCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *idxTokenPtr, *valTokenPtr;
@@ -2594,6 +2620,8 @@ TclCompileListCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
DefineLineInformation; /* TIP #280 */
@@ -2656,6 +2684,8 @@ TclCompileLlengthCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *varTokenPtr;
@@ -2716,6 +2746,8 @@ TclCompileLsetCmd(
Tcl_Interp *interp, /* Tcl interpreter for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the
* command. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds the resulting instructions. */
{
int tempDepth; /* Depth used for emitting one part of the
@@ -2872,6 +2904,8 @@ TclCompileRegexpCmd(
Tcl_Interp *interp, /* Tcl interpreter for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the
* command. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds the resulting instructions. */
{
Tcl_Token *varTokenPtr; /* Pointer to the Tcl_Token representing the
@@ -3025,6 +3059,8 @@ TclCompileReturnCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
/*
@@ -3216,6 +3252,8 @@ TclCompileSetCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *varTokenPtr, *valueTokenPtr;
@@ -3315,6 +3353,8 @@ TclCompileStringCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
DefineLineInformation; /* TIP #280 */
@@ -3534,6 +3574,8 @@ TclCompileSwitchCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *tokenPtr; /* Pointer to tokens in command. */
@@ -4367,6 +4409,8 @@ TclCompileWhileCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *testTokenPtr, *bodyTokenPtr;
@@ -5001,6 +5045,8 @@ int
TclCompileInvertOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileUnaryOpCmd(interp, parsePtr, INST_BITNOT, envPtr);
@@ -5010,6 +5056,8 @@ int
TclCompileNotOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileUnaryOpCmd(interp, parsePtr, INST_LNOT, envPtr);
@@ -5019,6 +5067,8 @@ int
TclCompileAddOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileAssociativeBinaryOpCmd(interp, parsePtr, "0", INST_ADD,
@@ -5029,6 +5079,8 @@ int
TclCompileMulOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileAssociativeBinaryOpCmd(interp, parsePtr, "1", INST_MULT,
@@ -5039,6 +5091,8 @@ int
TclCompileAndOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileAssociativeBinaryOpCmd(interp, parsePtr, "-1", INST_BITAND,
@@ -5049,6 +5103,8 @@ int
TclCompileOrOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileAssociativeBinaryOpCmd(interp, parsePtr, "0", INST_BITOR,
@@ -5059,6 +5115,8 @@ int
TclCompileXorOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileAssociativeBinaryOpCmd(interp, parsePtr, "0", INST_BITXOR,
@@ -5069,6 +5127,8 @@ int
TclCompilePowOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
/*
@@ -5097,6 +5157,8 @@ int
TclCompileLshiftOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_LSHIFT, envPtr);
@@ -5106,6 +5168,8 @@ int
TclCompileRshiftOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_RSHIFT, envPtr);
@@ -5115,6 +5179,8 @@ int
TclCompileModOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_MOD, envPtr);
@@ -5124,6 +5190,8 @@ int
TclCompileNeqOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_NEQ, envPtr);
@@ -5133,6 +5201,8 @@ int
TclCompileStrneqOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_STR_NEQ, envPtr);
@@ -5142,6 +5212,8 @@ int
TclCompileInOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_LIST_IN, envPtr);
@@ -5151,6 +5223,8 @@ int
TclCompileNiOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_LIST_NOT_IN,
@@ -5161,6 +5235,8 @@ int
TclCompileLessOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileComparisonOpCmd(interp, parsePtr, INST_LT, envPtr);
@@ -5170,6 +5246,8 @@ int
TclCompileLeqOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileComparisonOpCmd(interp, parsePtr, INST_LE, envPtr);
@@ -5179,6 +5257,8 @@ int
TclCompileGreaterOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileComparisonOpCmd(interp, parsePtr, INST_GT, envPtr);
@@ -5188,6 +5268,8 @@ int
TclCompileGeqOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileComparisonOpCmd(interp, parsePtr, INST_GE, envPtr);
@@ -5197,6 +5279,8 @@ int
TclCompileEqOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileComparisonOpCmd(interp, parsePtr, INST_EQ, envPtr);
@@ -5206,6 +5290,8 @@ int
TclCompileStreqOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
return CompileComparisonOpCmd(interp, parsePtr, INST_STR_EQ, envPtr);
@@ -5215,6 +5301,8 @@ int
TclCompileMinusOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
Tcl_Token *tokenPtr = parsePtr->tokenPtr;
@@ -5253,6 +5341,8 @@ int
TclCompileDivOpCmd(
Tcl_Interp *interp,
Tcl_Parse *parsePtr,
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr)
{
Tcl_Token *tokenPtr = parsePtr->tokenPtr;
@@ -5308,7 +5398,7 @@ TclCompileDivOpCmd(
static int
IndexTailVarIfKnown(
Tcl_Interp *interp,
- Tcl_Token *varTokenPtr, /* Token representing the variable name */
+ Tcl_Token *varTokenPtr, /* Token representing the variable name */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Obj *tailPtr;
@@ -5406,6 +5496,8 @@ TclCompileUpvarCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *tokenPtr, *otherTokenPtr, *localTokenPtr;
@@ -5515,6 +5607,8 @@ TclCompileNamespaceCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *tokenPtr, *otherTokenPtr, *localTokenPtr;
@@ -5605,6 +5699,8 @@ TclCompileGlobalCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *varTokenPtr;
@@ -5678,6 +5774,8 @@ TclCompileVariableCmd(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
Tcl_Token *varTokenPtr, *valueTokenPtr;
@@ -5737,109 +5835,230 @@ TclCompileVariableCmd(
/*
*----------------------------------------------------------------------
*
- * TclCompileInfoCmd --
+ * TclCompileEnsemble --
*
- * Procedure called to compile the "info" command. Only handles the
- * "exists" subcommand.
+ * Procedure called to compile an ensemble command.
*
* Results:
* Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
* evaluation to runtime.
*
* Side effects:
- * Instructions are added to envPtr to execute the "info exists"
- * subcommand at runtime.
+ * Instructions are added to envPtr to execute the subcommands of the
+ * ensemble at runtime if a compile-time mapping is possible.
*
*----------------------------------------------------------------------
*/
int
-TclCompileInfoCmd(
+TclCompileEnsemble(
Tcl_Interp *interp, /* Used for error reporting. */
Tcl_Parse *parsePtr, /* Points to a parse structure for the command
* created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
- Tcl_Token *tokenPtr;
- int isScalar, simpleVarName, localIndex, numWords;
- DefineLineInformation; /* TIP #280 */
+ Tcl_Token *tokenPtr, *argTokensPtr;
+ Tcl_Obj *mapObj, *subcmdObj, *targetCmdObj, *listObj, **elems;
+ Tcl_Command ensemble = (Tcl_Command) cmdPtr;
+ Tcl_Parse synthetic;
+ int len, numBytes, result;
+ const char *word;
+
+ if (parsePtr->numWords < 2) {
+ return TCL_ERROR;
+ }
+
+ tokenPtr = TokenAfter(parsePtr->tokenPtr);
+ if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+ /*
+ * Too hard.
+ */
- numWords = parsePtr->numWords;
- if (numWords != 3) {
return TCL_ERROR;
}
+ word = tokenPtr[1].start;
+ numBytes = tokenPtr[1].size;
+
/*
- * Ensure that the next word is "exists"; that's the only case we will
- * deal with.
+ * There's a sporting chance we'll be able to compile this. But now we
+ * must check properly. To do that, check that we're compiling an
+ * ensemble that has [info exists] as its appropriate subcommand.
*/
- tokenPtr = TokenAfter(parsePtr->tokenPtr);
- if (parsePtr->tokenPtr->type == TCL_TOKEN_SIMPLE_WORD &&
- tokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
- const char *word = tokenPtr[1].start;
- int numBytes = tokenPtr[1].size;
- Command *cmdPtr;
- Tcl_Obj *mapObj, *existsObj, *targetCmdObj;
- Tcl_DString ds;
-
+ if (Tcl_GetEnsembleMappingDict(NULL, ensemble, &mapObj) != TCL_OK
+ || mapObj == NULL) {
/*
- * There's a sporting chance we'll be able to compile this. But now we
- * must check properly. To do that, look up what we expect to be
- * called (inefficient, should be in context?) and check that that's
- * an ensemble that has [info exists] as its appropriate subcommand.
+ * Either not an ensemble or a mapping isn't installed. Crud. Too hard
+ * to proceed.
*/
- Tcl_DStringInit(&ds);
- Tcl_DStringAppend(&ds, parsePtr->tokenPtr[1].start,
- parsePtr->tokenPtr[1].size);
- cmdPtr = (Command *) Tcl_FindCommand(interp, Tcl_DStringValue(&ds),
- (Tcl_Namespace *) envPtr->iPtr->globalNsPtr, 0);
- Tcl_DStringFree(&ds);
- if (cmdPtr == NULL || cmdPtr->compileProc != &TclCompileInfoCmd) {
- /*
- * Not [info], and can't be bothered to follow rabbit hole of
- * renaming. This is an optimization, darnit!
- */
+ return TCL_ERROR;
+ }
- return TCL_ERROR;
- }
+ TclNewStringObj(subcmdObj, word, numBytes);
+ if (Tcl_DictObjGet(NULL, mapObj, subcmdObj, &targetCmdObj) != TCL_OK
+ || targetCmdObj == NULL) {
+ /*
+ * We've not got a valid subcommand.
+ */
- if (Tcl_GetEnsembleMappingDict(interp, (Tcl_Command) cmdPtr,
- &mapObj) != TCL_OK || mapObj == NULL) {
- /*
- * Either not an ensemble or a mapping isn't installed. Crud. Too
- * hard to proceed.
- */
+ TclDecrRefCount(subcmdObj);
+ return TCL_ERROR;
+ }
+ TclDecrRefCount(subcmdObj);
- return TCL_ERROR;
- }
+ /*
+ * The command we map to is the first word out of the map element. Note
+ * that we reject dealing with lists that are multiple elements long here;
+ * our rewriting-fu is not yet strong enough.
+ */
- TclNewStringObj(existsObj, word, numBytes);
- if (Tcl_DictObjGet(NULL, mapObj, existsObj, &targetCmdObj) != TCL_OK
- || targetCmdObj == NULL) {
- /*
- * We've not got a valid subcommand.
- */
+ if (Tcl_ListObjGetElements(NULL, targetCmdObj, &len, &elems) != TCL_OK
+ || len != 1) {
+ return TCL_ERROR;
+ }
+ targetCmdObj = elems[0];
+ Tcl_IncrRefCount(targetCmdObj);
- TclDecrRefCount(existsObj);
- return TCL_ERROR;
- }
- TclDecrRefCount(existsObj);
+ /*
+ * Check to see if there's also a subcommand list; must check to see if
+ * the subcommand we are calling is in that list if it exists, since that
+ * list filters the entries in the map.
+ */
- cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, targetCmdObj);
- if (cmdPtr == NULL || cmdPtr->objProc != &TclInfoExistsCmd) {
- /*
- * Maps to something unexpected. Help!
- */
+ (void) Tcl_GetEnsembleSubcommandList(NULL, ensemble, &listObj);
+ if (listObj != NULL) {
+ int i, sclen;
+ char *str;
+ if (Tcl_ListObjGetElements(NULL, listObj, &len,&elems) != TCL_OK){
+ TclDecrRefCount(targetCmdObj);
return TCL_ERROR;
}
+ for (i=0 ; i<len ; i++) {
+ str = Tcl_GetStringFromObj(elems[i], &sclen);
+ if (sclen == numBytes &&
+ memcmp(word, str, (unsigned) numBytes) == 0) {
+ goto doneSubcmdListSearch;
+ }
+ }
+ TclDecrRefCount(targetCmdObj);
+ return TCL_ERROR;
+ }
+
+ /*
+ * OK, we definitely map to something. But what?
+ */
+ doneSubcmdListSearch:
+ cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, targetCmdObj);
+ TclDecrRefCount(targetCmdObj);
+ if (cmdPtr == NULL || cmdPtr->compileProc == NULL) {
/*
- * OK, it really is [info exists]!
+ * Maps to an undefined command or a command without a compiler.
+ * Cannot compile.
*/
+
+ return TCL_ERROR;
+ }
+
+ /*
+ * Should check if we mapped to another ensemble here, and go round the
+ * peek-inside scheme above if so. [TO-DO]
+ */
+
+ /*
+ * 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.
+ */
+
+ argTokensPtr = TokenAfter(tokenPtr);
+ memcpy(&synthetic, parsePtr, sizeof(Tcl_Parse));
+ synthetic.numWords--;
+ synthetic.numTokens -= (argTokensPtr - parsePtr->tokenPtr) - 2;
+ if (synthetic.numTokens <= NUM_STATIC_TOKENS) {
+ synthetic.tokenPtr = synthetic.staticTokens;
+ synthetic.tokensAvailable = NUM_STATIC_TOKENS;
} else {
+ synthetic.tokenPtr = (Tcl_Token *)
+ ckalloc(sizeof(Tcl_Token) * synthetic.numTokens);
+ synthetic.tokensAvailable = synthetic.numTokens;
+ }
+
+ /*
+ * Now we have the space to work in, install something rewritten.
+ */
+
+ synthetic.tokenPtr[0].type = TCL_TOKEN_SIMPLE_WORD;
+ synthetic.tokenPtr[0].start = parsePtr->tokenPtr[0].start;
+ synthetic.tokenPtr[0].size = (tokenPtr->start + tokenPtr->size)
+ - parsePtr->tokenPtr[0].start;
+ synthetic.tokenPtr[0].numComponents = 1;
+
+ synthetic.tokenPtr[1].type = TCL_TOKEN_TEXT;
+ synthetic.tokenPtr[1].start = synthetic.tokenPtr[0].start;
+ synthetic.tokenPtr[1].size = synthetic.tokenPtr[0].size;
+ synthetic.tokenPtr[1].numComponents = 0;
+
+ /*
+ * Copy over the real argument tokens.
+ */
+
+ memcpy(synthetic.tokenPtr + 2, argTokensPtr,
+ sizeof(Tcl_Token) * (synthetic.numTokens - 2));
+
+ /*
+ * Hand off compilation to the subcommand compiler. At last!
+ */
+
+ result = cmdPtr->compileProc(interp, &synthetic, cmdPtr, envPtr);
+
+ /*
+ * Clean up if necessary.
+ */
+
+ if (synthetic.tokenPtr != synthetic.staticTokens) {
+ ckfree((char *) synthetic.tokenPtr);
+ }
+ return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileInfoExistsCmd --
+ *
+ * Procedure called to compile the "info exists" subcommand.
+ *
+ * Results:
+ * Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * evaluation to runtime.
+ *
+ * Side effects:
+ * Instructions are added to envPtr to execute the "info exists"
+ * subcommand at runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileInfoExistsCmd(
+ Tcl_Interp *interp, /* Used for error reporting. */
+ Tcl_Parse *parsePtr, /* Points to a parse structure for the command
+ * created by Tcl_ParseCommand. */
+ Command *cmdPtr, /* Points to defintion of command being
+ * compiled. */
+ CompileEnv *envPtr) /* Holds resulting instructions. */
+{
+ Tcl_Token *tokenPtr;
+ int isScalar, simpleVarName, localIndex;
+ DefineLineInformation; /* TIP #280 */
+
+ if (parsePtr->numWords != 2) {
return TCL_ERROR;
}
@@ -5851,9 +6070,9 @@ TclCompileInfoCmd(
* qualifiers.
*/
- tokenPtr = TokenAfter(tokenPtr);
+ tokenPtr = TokenAfter(parsePtr->tokenPtr);
PushVarName(interp, tokenPtr, envPtr, TCL_CREATE_VAR, &localIndex,
- &simpleVarName, &isScalar, mapPtr->loc[eclIndex].line[2]);
+ &simpleVarName, &isScalar, mapPtr->loc[eclIndex].line[1]);
/*
* Emit instruction to check the variable for existence.