diff options
Diffstat (limited to 'generic/tclCompCmds.c')
| -rw-r--r-- | generic/tclCompCmds.c | 388 |
1 files changed, 366 insertions, 22 deletions
diff --git a/generic/tclCompCmds.c b/generic/tclCompCmds.c index 7c1a4aa..917fd20 100644 --- a/generic/tclCompCmds.c +++ b/generic/tclCompCmds.c @@ -15,6 +15,7 @@ #include "tclInt.h" #include "tclCompile.h" +#include <assert.h> /* * Prototypes for procedures defined later in this file: @@ -225,6 +226,245 @@ TclCompileAppendCmd( /* *---------------------------------------------------------------------- * + * TclCompileArray*Cmd -- + * + * Functions called to compile "array" sucommands. + * + * Results: + * All return TCL_OK for a successful compile, and TCL_ERROR to defer + * evaluation to runtime. + * + * Side effects: + * Instructions are added to envPtr to execute the "array" subcommand at + * runtime. + * + *---------------------------------------------------------------------- + */ + +int +TclCompileArrayExistsCmd( + Tcl_Interp *interp, /* Used for looking up stuff. */ + 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 */ + Tcl_Token *tokenPtr; + int simpleVarName, isScalar, localIndex; + + if (parsePtr->numWords != 2) { + return TCL_ERROR; + } + + tokenPtr = TokenAfter(parsePtr->tokenPtr); + PushVarNameWord(interp, tokenPtr, envPtr, 0, + &localIndex, &simpleVarName, &isScalar, 1); + if (!isScalar) { + return TCL_ERROR; + } + + if (localIndex >= 0) { + TclEmitInstInt4(INST_ARRAY_EXISTS_IMM, localIndex, envPtr); + } else { + TclEmitOpcode( INST_ARRAY_EXISTS_STK, envPtr); + } + return TCL_OK; +} + +int +TclCompileArraySetCmd( + Tcl_Interp *interp, /* Used for looking up stuff. */ + 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 */ + Tcl_Token *tokenPtr; + int simpleVarName, isScalar, localIndex; + int dataVar, iterVar, keyVar, valVar, infoIndex; + int back, fwd, offsetBack, offsetFwd, savedStackDepth; + ForeachInfo *infoPtr; + + if (parsePtr->numWords != 3) { + return TCL_ERROR; + } + + tokenPtr = TokenAfter(parsePtr->tokenPtr); + PushVarNameWord(interp, tokenPtr, envPtr, 0, + &localIndex, &simpleVarName, &isScalar, 1); + if (!isScalar) { + return TCL_ERROR; + } + tokenPtr = TokenAfter(tokenPtr); + + /* + * Special case: literal empty value argument is just an "ensure array" + * operation. + */ + + if (tokenPtr->type == TCL_TOKEN_SIMPLE_WORD && tokenPtr[1].size == 0) { + if (localIndex >= 0) { + TclEmitInstInt4(INST_ARRAY_EXISTS_IMM, localIndex, envPtr); + TclEmitInstInt1(INST_JUMP_TRUE1, 7, envPtr); + TclEmitInstInt4(INST_ARRAY_MAKE_IMM, localIndex, envPtr); + } else { + TclEmitOpcode( INST_DUP, envPtr); + TclEmitOpcode( INST_ARRAY_EXISTS_STK, envPtr); + TclEmitInstInt1(INST_JUMP_TRUE1, 5, envPtr); + savedStackDepth = envPtr->currStackDepth; + TclEmitOpcode( INST_ARRAY_MAKE_STK, envPtr); + TclEmitInstInt1(INST_JUMP1, 3, envPtr); + envPtr->currStackDepth = savedStackDepth; + TclEmitOpcode( INST_POP, envPtr); + } + PushLiteral(envPtr, "", 0); + return TCL_OK; + } + + /* + * Prepare for the internal foreach. + */ + + if (envPtr->procPtr == NULL) { + return TCL_ERROR; + } + dataVar = TclFindCompiledLocal(NULL, 0, 1, envPtr); + iterVar = TclFindCompiledLocal(NULL, 0, 1, envPtr); + keyVar = TclFindCompiledLocal(NULL, 0, 1, envPtr); + valVar = TclFindCompiledLocal(NULL, 0, 1, envPtr); + + infoPtr = ckalloc(sizeof(ForeachInfo) + sizeof(ForeachVarList *)); + infoPtr->numLists = 1; + infoPtr->firstValueTemp = dataVar; + infoPtr->loopCtTemp = iterVar; + infoPtr->varLists[0] = ckalloc(sizeof(ForeachVarList) * 2*sizeof(int)); + infoPtr->varLists[0]->numVars = 2; + infoPtr->varLists[0]->varIndexes[0] = keyVar; + infoPtr->varLists[0]->varIndexes[1] = valVar; + infoIndex = TclCreateAuxData(infoPtr, &tclForeachInfoType, envPtr); + + /* + * Start issuing instructions to write to the array. + */ + + CompileWord(envPtr, tokenPtr, interp, 2); + TclEmitOpcode( INST_DUP, envPtr); + TclEmitOpcode( INST_LIST_LENGTH, envPtr); + PushLiteral(envPtr, "1", 1); + TclEmitOpcode( INST_BITAND, envPtr); + offsetFwd = CurrentOffset(envPtr); + TclEmitInstInt1( INST_JUMP_FALSE1, 0, envPtr); + savedStackDepth = envPtr->currStackDepth; + PushLiteral(envPtr, "list must have an even number of elements", + strlen("list must have an even number of elements")); + PushLiteral(envPtr, "-errorCode {TCL ARGUMENT FORMAT}", + strlen("-errorCode {TCL ARGUMENT FORMAT}")); + TclEmitInstInt4( INST_RETURN_IMM, 1, envPtr); + TclEmitInt4( 0, envPtr); + envPtr->currStackDepth = savedStackDepth; + fwd = CurrentOffset(envPtr) - offsetFwd; + TclStoreInt1AtPtr(fwd, envPtr->codeStart+offsetFwd+1); + Emit14Inst( INST_STORE_SCALAR, dataVar, envPtr); + TclEmitOpcode( INST_POP, envPtr); + + if (localIndex >= 0) { + TclEmitInstInt4(INST_ARRAY_EXISTS_IMM, localIndex, envPtr); + TclEmitInstInt1(INST_JUMP_TRUE1, 7, envPtr); + TclEmitInstInt4(INST_ARRAY_MAKE_IMM, localIndex, envPtr); + TclEmitInstInt4(INST_FOREACH_START4, infoIndex, envPtr); + offsetBack = CurrentOffset(envPtr); + TclEmitInstInt4(INST_FOREACH_STEP4, infoIndex, envPtr); + offsetFwd = CurrentOffset(envPtr); + TclEmitInstInt1(INST_JUMP_FALSE1, 0, envPtr); + savedStackDepth = envPtr->currStackDepth; + Emit14Inst( INST_LOAD_SCALAR, keyVar, envPtr); + Emit14Inst( INST_LOAD_SCALAR, valVar, envPtr); + Emit14Inst( INST_STORE_ARRAY, localIndex, envPtr); + TclEmitOpcode( INST_POP, envPtr); + back = offsetBack - CurrentOffset(envPtr); + TclEmitInstInt1(INST_JUMP1, back, envPtr); + fwd = CurrentOffset(envPtr) - offsetFwd; + TclStoreInt1AtPtr(fwd, envPtr->codeStart+offsetFwd+1); + envPtr->currStackDepth = savedStackDepth; + } else { + TclEmitOpcode( INST_DUP, envPtr); + TclEmitOpcode( INST_ARRAY_EXISTS_STK, envPtr); + TclEmitInstInt1(INST_JUMP_TRUE1, 4, envPtr); + TclEmitOpcode( INST_DUP, envPtr); + TclEmitOpcode( INST_ARRAY_MAKE_STK, envPtr); + TclEmitInstInt4(INST_FOREACH_START4, infoIndex, envPtr); + offsetBack = CurrentOffset(envPtr); + TclEmitInstInt4(INST_FOREACH_STEP4, infoIndex, envPtr); + offsetFwd = CurrentOffset(envPtr); + TclEmitInstInt1(INST_JUMP_FALSE1, 0, envPtr); + savedStackDepth = envPtr->currStackDepth; + TclEmitOpcode( INST_DUP, envPtr); + Emit14Inst( INST_LOAD_SCALAR, keyVar, envPtr); + Emit14Inst( INST_LOAD_SCALAR, valVar, envPtr); + TclEmitOpcode( INST_STORE_ARRAY_STK, envPtr); + TclEmitOpcode( INST_POP, envPtr); + back = offsetBack - CurrentOffset(envPtr); + TclEmitInstInt1(INST_JUMP1, back, envPtr); + fwd = CurrentOffset(envPtr) - offsetFwd; + TclStoreInt1AtPtr(fwd, envPtr->codeStart+offsetFwd+1); + envPtr->currStackDepth = savedStackDepth; + TclEmitOpcode( INST_POP, envPtr); + } + TclEmitInstInt1( INST_UNSET_SCALAR, 0, envPtr); + TclEmitInt4( dataVar, envPtr); + PushLiteral(envPtr, "", 0); + return TCL_OK; +} + +int +TclCompileArrayUnsetCmd( + Tcl_Interp *interp, /* Used for looking up stuff. */ + 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 */ + Tcl_Token *tokenPtr = TokenAfter(parsePtr->tokenPtr); + int simpleVarName, isScalar, localIndex, savedStackDepth; + + if (parsePtr->numWords != 2) { + return TCL_ERROR; + } + + PushVarNameWord(interp, tokenPtr, envPtr, 0, + &localIndex, &simpleVarName, &isScalar, 1); + if (!isScalar) { + return TCL_ERROR; + } + + if (localIndex >= 0) { + TclEmitInstInt4(INST_ARRAY_EXISTS_IMM, localIndex, envPtr); + TclEmitInstInt1(INST_JUMP_FALSE1, 8, envPtr); + TclEmitInstInt1(INST_UNSET_SCALAR, 1, envPtr); + TclEmitInt4( localIndex, envPtr); + } else { + TclEmitOpcode( INST_DUP, envPtr); + TclEmitOpcode( INST_ARRAY_EXISTS_STK, envPtr); + TclEmitInstInt1(INST_JUMP_FALSE1, 6, envPtr); + savedStackDepth = envPtr->currStackDepth; + TclEmitInstInt1(INST_UNSET_STK, 1, envPtr); + TclEmitInstInt1(INST_JUMP1, 3, envPtr); + envPtr->currStackDepth = savedStackDepth; + TclEmitOpcode( INST_POP, envPtr); + } + PushLiteral(envPtr, "", 0); + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * * TclCompileBreakCmd -- * * Procedure called to compile the "break" command. @@ -258,6 +498,7 @@ TclCompileBreakCmd( */ TclEmitOpcode(INST_BREAK, envPtr); + PushLiteral(envPtr, "", 0); /* Evil hack! */ return TCL_OK; } @@ -564,6 +805,7 @@ TclCompileContinueCmd( */ TclEmitOpcode(INST_CONTINUE, envPtr); + PushLiteral(envPtr, "", 0); /* Evil hack! */ return TCL_OK; } @@ -582,26 +824,6 @@ TclCompileContinueCmd( * Instructions are added to envPtr to execute the "dict" subcommand at * runtime. * - * Notes: - * The following commands are in fairly common use and are possibly worth - * bytecoding: - * dict append - * dict create [*] - * dict exists [*] - * dict for - * dict get [*] - * dict incr - * dict keys [*] - * dict lappend - * dict map - * dict set - * dict unset - * - * In practice, those that are pure-value operators (marked with [*]) can - * probably be left alone (except perhaps [dict get] which is very very - * common) and [dict update] should be considered instead (really big - * win!) - * *---------------------------------------------------------------------- */ @@ -666,6 +888,7 @@ TclCompileDictSetCmd( TclEmitInstInt4( INST_DICT_SET, numWords-2, envPtr); TclEmitInt4( dictVarIndex, envPtr); + TclAdjustStackDepth(-1, envPtr); return TCL_OK; } @@ -783,6 +1006,7 @@ TclCompileDictGetCmd( tokenPtr = TokenAfter(tokenPtr); } TclEmitInstInt4(INST_DICT_GET, numWords-1, envPtr); + TclAdjustStackDepth(-1, envPtr); return TCL_OK; } @@ -819,6 +1043,7 @@ TclCompileDictExistsCmd( tokenPtr = TokenAfter(tokenPtr); } TclEmitInstInt4(INST_DICT_EXISTS, numWords-1, envPtr); + TclAdjustStackDepth(-1, envPtr); return TCL_OK; } @@ -879,7 +1104,7 @@ TclCompileDictUnsetCmd( */ TclEmitInstInt4( INST_DICT_UNSET, parsePtr->numWords-2, envPtr); - TclEmitInt4( dictVarIndex, envPtr); + TclEmitInt4( dictVarIndex, envPtr); return TCL_OK; } @@ -967,6 +1192,7 @@ TclCompileDictCreateCmd( tokenPtr = TokenAfter(tokenPtr); TclEmitInstInt4( INST_DICT_SET, 1, envPtr); TclEmitInt4( worker, envPtr); + TclAdjustStackDepth(-1, envPtr); TclEmitOpcode( INST_POP, envPtr); } Emit14Inst( INST_LOAD_SCALAR, worker, envPtr); @@ -1048,6 +1274,7 @@ TclCompileDictMergeCmd( TclEmitInstInt4( INST_REVERSE, 2, envPtr); TclEmitInstInt4( INST_DICT_SET, 1, envPtr); TclEmitInt4( workerIndex, envPtr); + TclAdjustStackDepth(-1, envPtr); TclEmitOpcode( INST_POP, envPtr); TclEmitInstInt4( INST_DICT_NEXT, infoIndex, envPtr); TclEmitInstInt1( INST_JUMP_FALSE1, -20, envPtr); @@ -1275,6 +1502,7 @@ CompileDictEachCmd( TclEmitInstInt4(INST_OVER, 1, envPtr); TclEmitInstInt4(INST_DICT_SET, 1, envPtr); TclEmitInt4( collectVar, envPtr); + TclAdjustStackDepth(-1, envPtr); TclEmitOpcode( INST_POP, envPtr); } TclEmitOpcode( INST_POP, envPtr); @@ -1337,7 +1565,7 @@ CompileDictEachCmd( * easy!) Note that we skip the END_CATCH. [Bug 1382528] */ - envPtr->currStackDepth = savedStackDepth+2; + envPtr->currStackDepth = savedStackDepth + 2; jumpDisplacement = CurrentOffset(envPtr) - emptyTargetOffset; TclUpdateInstInt4AtPc(INST_JUMP_TRUE4, jumpDisplacement, envPtr->codeStart + emptyTargetOffset); @@ -1533,6 +1761,7 @@ TclCompileDictUpdateCmd( (int) (CurrentOffset(envPtr) - jumpFixup.codeOffset)); } TclStackFree(interp, keyTokenPtrs); + envPtr->currStackDepth = savedStackDepth + 1; return TCL_OK; } @@ -1781,6 +2010,7 @@ TclCompileDictWithCmd( PushLiteral(envPtr, "", 0); } } + envPtr->currStackDepth = savedStackDepth + 1; return TCL_OK; } @@ -1899,6 +2129,7 @@ TclCompileDictWithCmd( * Prepare for the start of the next command. */ + envPtr->currStackDepth = savedStackDepth + 1; if (TclFixupForwardJumpToHere(envPtr, &jumpFixup, 127)) { Tcl_Panic("TclCompileDictCmd(update): bad jump distance %d", (int) (CurrentOffset(envPtr) - jumpFixup.codeOffset)); @@ -1998,6 +2229,7 @@ TclCompileErrorCmd( * However, we only deal with the case where there is just a message. */ Tcl_Token *messageTokenPtr; + int savedStackDepth = envPtr->currStackDepth; DefineLineInformation; /* TIP #280 */ if (parsePtr->numWords != 2) { @@ -2008,6 +2240,7 @@ TclCompileErrorCmd( PushLiteral(envPtr, "-code error -level 0", 20); CompileWord(envPtr, messageTokenPtr, interp, 1); TclEmitOpcode(INST_RETURN_STK, envPtr); + envPtr->currStackDepth = savedStackDepth + 1; return TCL_OK; } @@ -3688,6 +3921,42 @@ TclCompileInfoObjectClassCmd( } int +TclCompileInfoObjectIsACmd( + 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) +{ + DefineLineInformation; /* TIP #280 */ + Tcl_Token *tokenPtr = TokenAfter(parsePtr->tokenPtr); + + /* + * We only handle [info object isa object <somevalue>]. The first three + * words are compressed to a single token by the ensemble compilation + * engine. + */ + + if (parsePtr->numWords != 3) { + return TCL_ERROR; + } + if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD || tokenPtr[1].size < 1 + || strncmp(tokenPtr[1].start, "object", tokenPtr[1].size)) { + return TCL_ERROR; + } + tokenPtr = TokenAfter(tokenPtr); + + /* + * Issue the code. + */ + + CompileWord(envPtr, tokenPtr, interp, 2); + TclEmitOpcode( INST_TCLOO_IS_OBJECT, envPtr); + return TCL_OK; +} + +int TclCompileInfoObjectNamespaceCmd( Tcl_Interp *interp, /* Used for error reporting. */ Tcl_Parse *parsePtr, /* Points to a parse structure for the command @@ -4647,6 +4916,79 @@ TclCompileNamespaceCodeCmd( } int +TclCompileNamespaceQualifiersCmd( + 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 = TokenAfter(parsePtr->tokenPtr); + DefineLineInformation; /* TIP #280 */ + int off; + + if (parsePtr->numWords != 2) { + return TCL_ERROR; + } + + CompileWord(envPtr, tokenPtr, interp, 1); + PushLiteral(envPtr, "0", 1); + PushLiteral(envPtr, "::", 2); + TclEmitInstInt4( INST_OVER, 2, envPtr); + TclEmitOpcode( INST_STR_FIND_LAST, envPtr); + off = CurrentOffset(envPtr); + PushLiteral(envPtr, "1", 1); + TclEmitOpcode( INST_SUB, envPtr); + TclEmitInstInt4( INST_OVER, 2, envPtr); + TclEmitInstInt4( INST_OVER, 1, envPtr); + TclEmitOpcode( INST_STR_INDEX, envPtr); + PushLiteral(envPtr, ":", 1); + TclEmitOpcode( INST_STR_EQ, envPtr); + off = off - CurrentOffset(envPtr); + TclEmitInstInt1( INST_JUMP_TRUE1, off, envPtr); + TclEmitOpcode( INST_STR_RANGE, envPtr); + return TCL_OK; +} + +int +TclCompileNamespaceTailCmd( + 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 = TokenAfter(parsePtr->tokenPtr); + DefineLineInformation; /* TIP #280 */ + JumpFixup jumpFixup; + + if (parsePtr->numWords != 2) { + return TCL_ERROR; + } + + /* + * Take care; only add 2 to found index if the string was actually found. + */ + + CompileWord(envPtr, tokenPtr, interp, 1); + PushLiteral(envPtr, "::", 2); + TclEmitInstInt4( INST_OVER, 1, envPtr); + TclEmitOpcode( INST_STR_FIND_LAST, envPtr); + TclEmitOpcode( INST_DUP, envPtr); + PushLiteral(envPtr, "0", 1); + TclEmitOpcode( INST_GE, envPtr); + TclEmitForwardJump(envPtr, TCL_FALSE_JUMP, &jumpFixup); + PushLiteral(envPtr, "2", 1); + TclEmitOpcode( INST_ADD, envPtr); + TclFixupForwardJumpToHere(envPtr, &jumpFixup, 127); + PushLiteral(envPtr, "end", 3); + TclEmitOpcode( INST_STR_RANGE, envPtr); + return TCL_OK; +} + +int TclCompileNamespaceUpvarCmd( Tcl_Interp *interp, /* Used for error reporting. */ Tcl_Parse *parsePtr, /* Points to a parse structure for the command @@ -5129,6 +5471,7 @@ TclCompileReturnCmd( int numWords = parsePtr->numWords; int explicitResult = (0 == (numWords % 2)); int numOptionWords = numWords - 1 - explicitResult; + int savedStackDepth = envPtr->currStackDepth; Tcl_Obj *returnOpts, **objv; Tcl_Token *wordTokenPtr = TokenAfter(parsePtr->tokenPtr); DefineLineInformation; /* TIP #280 */ @@ -5151,6 +5494,7 @@ TclCompileReturnCmd( CompileWord(envPtr, optsTokenPtr, interp, 2); CompileWord(envPtr, msgTokenPtr, interp, 3); TclEmitOpcode(INST_RETURN_STK, envPtr); + envPtr->currStackDepth = savedStackDepth + 1; return TCL_OK; } |