diff options
Diffstat (limited to 'generic/tclObj.c')
| -rw-r--r-- | generic/tclObj.c | 64 |
1 files changed, 56 insertions, 8 deletions
diff --git a/generic/tclObj.c b/generic/tclObj.c index 6e17141..421c1da 100644 --- a/generic/tclObj.c +++ b/generic/tclObj.c @@ -4,11 +4,11 @@ * This file contains Tcl object-related functions that are used by many * Tcl commands. * - * Copyright (c) 1995-1997 Sun Microsystems, Inc. - * Copyright (c) 1999 by Scriptics Corporation. - * Copyright (c) 2001 by ActiveState Corporation. - * Copyright (c) 2005 by Kevin B. Kenny. All rights reserved. - * Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net> + * Copyright © 1995-1997 Sun Microsystems, Inc. + * Copyright © 1999 Scriptics Corporation. + * Copyright © 2001 ActiveState Corporation. + * Copyright © 2005 Kevin B. Kenny. All rights reserved. + * Copyright © 2007 Daniel A. Steffen <das@users.sourceforge.net> * * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. @@ -1617,6 +1617,7 @@ TclSetDuplicateObj( *---------------------------------------------------------------------- */ +#undef Tcl_GetString char * Tcl_GetString( Tcl_Obj *objPtr) /* Object whose string rep byte pointer should @@ -1653,7 +1654,7 @@ Tcl_GetString( /* *---------------------------------------------------------------------- * - * Tcl_GetStringFromObj -- + * Tcl_GetStringFromObj/TclGetStringFromObj -- * * Returns the string representation's byte array pointer and length for * an object. @@ -1673,6 +1674,7 @@ Tcl_GetString( *---------------------------------------------------------------------- */ +#undef Tcl_GetStringFromObj char * Tcl_GetStringFromObj( Tcl_Obj *objPtr, /* Object whose string rep byte pointer should @@ -1711,6 +1713,51 @@ Tcl_GetStringFromObj( } return objPtr->bytes; } + +#undef TclGetStringFromObj +char * +TclGetStringFromObj( + Tcl_Obj *objPtr, /* Object whose string rep byte pointer should + * be returned. */ + size_t *lengthPtr) /* If non-NULL, the location where the string + * rep's byte array length should * be stored. + * If NULL, no length is stored. */ +{ + if (objPtr->bytes == NULL) { + /* + * Note we do not check for objPtr->typePtr == NULL. An invariant + * of a properly maintained Tcl_Obj is that at least one of + * objPtr->bytes and objPtr->typePtr must not be NULL. If broken + * extensions fail to maintain that invariant, we can crash here. + */ + + if (objPtr->typePtr->updateStringProc == NULL) { + /* + * Those Tcl_ObjTypes which choose not to define an + * updateStringProc must be written in such a way that + * (objPtr->bytes) never becomes NULL. + */ + Tcl_Panic("UpdateStringProc should not be invoked for type %s", + objPtr->typePtr->name); + } + objPtr->typePtr->updateStringProc(objPtr); + if (objPtr->bytes == NULL || objPtr->length < 0 + || objPtr->bytes[objPtr->length] != '\0') { + Tcl_Panic("UpdateStringProc for type '%s' " + "failed to create a valid string rep", + objPtr->typePtr->name); + } + } + if (lengthPtr != NULL) { +#if TCL_MAJOR_VERSION > 8 + *lengthPtr = objPtr->length; +#else + *lengthPtr = ((size_t)(unsigned)(objPtr->length + 1)) - 1; +#endif + } + return objPtr->bytes; +} + /* *---------------------------------------------------------------------- @@ -2193,7 +2240,7 @@ TclSetBooleanFromAny( badBoolean: if (interp != NULL) { int length; - const char *str = TclGetStringFromObj(objPtr, &length); + const char *str = Tcl_GetStringFromObj(objPtr, &length); Tcl_Obj *msg; TclNewLiteralStringObj(msg, "expected boolean value but got \""); @@ -2713,6 +2760,7 @@ Tcl_GetIntFromObj( return TCL_OK; #endif } + /* *---------------------------------------------------------------------- @@ -4313,7 +4361,7 @@ TclHashObjKey( { Tcl_Obj *objPtr = (Tcl_Obj *)keyPtr; int length; - const char *string = TclGetStringFromObj(objPtr, &length); + const char *string = Tcl_GetStringFromObj(objPtr, &length); TCL_HASH_TYPE result = 0; /* |