diff options
Diffstat (limited to 'generic/tclTomMathStubLib.c')
-rw-r--r-- | generic/tclTomMathStubLib.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/generic/tclTomMathStubLib.c b/generic/tclTomMathStubLib.c new file mode 100644 index 0000000..e7e4aea --- /dev/null +++ b/generic/tclTomMathStubLib.c @@ -0,0 +1,89 @@ +/* + * tclTomMathStubLib.c -- + * + * Stub object that will be statically linked into extensions that want + * to access Tcl. + * + * Copyright (c) 1998-1999 by Scriptics Corporation. + * Copyright (c) 1998 Paul Duffin. + * + * See the file "license.terms" for information on usage and redistribution of + * this file, and for a DISCLAIMER OF ALL WARRANTIES. + */ + +/* + * We need to ensure that we use the stub macros so that this file contains no + * references to any of the stub functions. This will make it possible to + * build an extension that references Tcl_InitStubs but doesn't end up + * including the rest of the stub functions. + */ + +#define USE_TCL_STUBS + +#include "tclInt.h" + +MODULE_SCOPE const TclTomMathStubs *tclTomMathStubsPtr; + +const TclTomMathStubs *tclTomMathStubsPtr = NULL; + + +/* + *---------------------------------------------------------------------- + * + * TclTomMathInitStubs -- + * + * Initializes the Stubs table for Tcl's subset of libtommath + * + * Results: + * Returns a standard Tcl result. + * + * This procedure should not be called directly, but rather through + * the TclTomMath_InitStubs macro, to insure that the Stubs table + * matches the header files used in compilation. + * + *---------------------------------------------------------------------- + */ + +MODULE_SCOPE const char * +TclTomMathInitializeStubs( + Tcl_Interp *interp, /* Tcl interpreter */ + const char *version, /* Tcl version needed */ + int epoch, /* Stubs table epoch from the header files */ + int revision) /* Stubs table revision number from the + * header files */ +{ + int exact = 0; + const char *packageName = "tcl::tommath"; + const char *errMsg = NULL; + ClientData pkgClientData = NULL; + const char *actualVersion = + Tcl_PkgRequireEx(interp, packageName, version, exact, &pkgClientData); + const TclTomMathStubs *stubsPtr = pkgClientData; + + if (actualVersion == NULL) { + return NULL; + } + if (pkgClientData == NULL) { + errMsg = "missing stub table pointer"; + } else if ((stubsPtr->tclBN_epoch)() != epoch) { + errMsg = "epoch number mismatch"; + } else if ((stubsPtr->tclBN_revision)() != revision) { + errMsg = "requires a later revision"; + } else { + tclTomMathStubsPtr = stubsPtr; + return actualVersion; + } + Tcl_ResetResult(interp); + Tcl_AppendResult(interp, "error loading ", packageName, + " (requested version ", version, ", actual version ", + actualVersion, "): ", errMsg, NULL); + return NULL; +} + +/* + * Local Variables: + * mode: c + * c-basic-offset: 4 + * fill-column: 78 + * End: + */ |