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| author | Guido van Rossum <guido@python.org> | 1993-11-10 12:53:24 (GMT) |
|---|---|---|
| committer | Guido van Rossum <guido@python.org> | 1993-11-10 12:53:24 (GMT) |
| commit | 52f2c05401ab13eab45a91d39089866f55ef3c9b (patch) | |
| tree | ae73dc8f72a56cc6c15ae30e9b2e78ef654ae20c | |
| parent | a3d78fb268da5cf7cd4d990cf118bfc01650a8d9 (diff) | |
| download | cpython-52f2c05401ab13eab45a91d39089866f55ef3c9b.zip cpython-52f2c05401ab13eab45a91d39089866f55ef3c9b.tar.gz cpython-52f2c05401ab13eab45a91d39089866f55ef3c9b.tar.bz2 | |
* parsermodule.c, Makefile, config.c: rudimentary interface to the Python
parser.
* mappingobject.c (lookmapping): 'freeslot' was never used due to a bug in
the code.
| -rw-r--r-- | Modules/config.c.in | 7 | ||||
| -rw-r--r-- | Modules/parsermodule.c | 108 | ||||
| -rw-r--r-- | Objects/dictobject.c | 2 | ||||
| -rw-r--r-- | Objects/mappingobject.c | 2 |
4 files changed, 117 insertions, 2 deletions
diff --git a/Modules/config.c.in b/Modules/config.c.in index c9f56ac..b8fc15f 100644 --- a/Modules/config.c.in +++ b/Modules/config.c.in @@ -296,6 +296,9 @@ extern void initHTML(); #ifdef USE_XLIB extern void initXlib(); #endif +#ifdef USE_PARSER +extern void initparser(); +#endif /* -- ADDMODULE MARKER 1 -- */ struct { @@ -475,6 +478,10 @@ struct { {"Xlib", initXlib}, #endif +#ifdef USE_PARSER + {"parser", initparser}, +#endif + /* -- ADDMODULE MARKER 2 -- */ {0, 0} /* Sentinel */ diff --git a/Modules/parsermodule.c b/Modules/parsermodule.c new file mode 100644 index 0000000..3274c1a --- /dev/null +++ b/Modules/parsermodule.c @@ -0,0 +1,108 @@ +/*********************************************************** +Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum, +Amsterdam, The Netherlands. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the names of Stichting Mathematisch +Centrum or CWI not be used in advertising or publicity pertaining to +distribution of the software without specific, written prior permission. + +STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO +THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE +FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT +OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +******************************************************************/ + +#include "allobjects.h" +#include "node.h" +#include "token.h" +#include "pythonrun.h" +#include "graminit.h" +#include "errcode.h" + +object * +node2tuple(n) + node *n; +{ + if (n == NULL) { + INCREF(None); + return None; + } + if (ISNONTERMINAL(TYPE(n))) { + int i; + object *v, *w; + v = newtupleobject(1 + NCH(n)); + if (v == NULL) + return v; + w = newintobject(TYPE(n)); + if (w == NULL) { + DECREF(v); + return NULL; + } + settupleitem(v, 0, w); + for (i = 0; i < NCH(n); i++) { + w = node2tuple(CHILD(n, i)); + if (w == NULL) { + DECREF(v); + return NULL; + } + settupleitem(v, i+1, w); + } + return v; + } + else if (ISTERMINAL(TYPE(n))) { + return mkvalue("(is)", TYPE(n), STR(n)); + } + else { + err_setstr(SystemError, "unrecognized parse tree node type"); + return NULL; + } +} + +static object * +parser_parsefile(self, args) + object *self; + object *args; +{ + char *filename; + FILE *fp; + node *n = NULL; + int err; + object *res; + if (!getargs(args, "s", &filename)) + return NULL; + fp = fopen(filename, "r"); + if (fp == NULL) { + err_errno(IOError); + return NULL; + } + err = parse_file(fp, filename, file_input, &n); + fclose(fp); + if (err != E_DONE) { + err_input(err); + return NULL; + } + res = node2tuple(n); + freetree(n); + return res; +} + +static struct methodlist parser_methods[] = { + {"parsefile", parser_parsefile}, + {0, 0} /* Sentinel */ +}; + +void +initparser() +{ + initmodule("parser", parser_methods); +} diff --git a/Objects/dictobject.c b/Objects/dictobject.c index c1c1c19..65512be 100644 --- a/Objects/dictobject.c +++ b/Objects/dictobject.c @@ -147,7 +147,7 @@ lookmapping(mp, key, hash) return ep; } if (ep->me_key == dummy) { - if (freeslot != NULL) + if (freeslot == NULL) freeslot = ep; } else if (ep->me_hash == hash && diff --git a/Objects/mappingobject.c b/Objects/mappingobject.c index c1c1c19..65512be 100644 --- a/Objects/mappingobject.c +++ b/Objects/mappingobject.c @@ -147,7 +147,7 @@ lookmapping(mp, key, hash) return ep; } if (ep->me_key == dummy) { - if (freeslot != NULL) + if (freeslot == NULL) freeslot = ep; } else if (ep->me_hash == hash && |