Greatly renamed. Not a very thorough job -- I'm going to restructure

it anyway.
This commit is contained in:
Guido van Rossum 1997-03-05 00:20:32 +00:00
parent 159b77fd5e
commit 82598051e6
1 changed files with 210 additions and 209 deletions

View File

@ -31,7 +31,7 @@ PERFORMANCE OF THIS SOFTWARE.
/* Python interpreter top-level routines, including init/exit */
#include "allobjects.h"
#include "Python.h"
#include "grammar.h"
#include "node.h"
@ -39,12 +39,8 @@ PERFORMANCE OF THIS SOFTWARE.
#include "graminit.h"
#undef argument /* Avoid conflict on Mac */
#include "errcode.h"
#include "sysmodule.h"
#include "bltinmodule.h"
#include "compile.h"
#include "eval.h"
#include "ceval.h"
#include "import.h"
#include "marshal.h"
#ifdef HAVE_UNISTD_H
@ -61,30 +57,30 @@ PERFORMANCE OF THIS SOFTWARE.
#include "windows.h"
#endif
extern char *getpythonpath();
extern char *Py_GetPath();
extern grammar gram; /* From graminit.c */
extern grammar _PyParser_Grammar; /* From graminit.c */
/* Forward */
static void initmain PROTO((void));
static object *run_err_node PROTO((node *n, char *filename,
object *globals, object *locals));
static object *run_node PROTO((node *n, char *filename,
object *globals, object *locals));
static object *run_pyc_file PROTO((FILE *fp, char *filename,
object *globals, object *locals));
static void err_input PROTO((perrdetail *));
static void initsigs PROTO((void));
static void initmain Py_PROTO((void));
static PyObject *run_err_node Py_PROTO((node *n, char *filename,
PyObject *globals, PyObject *locals));
static PyObject *run_node Py_PROTO((node *n, char *filename,
PyObject *globals, PyObject *locals));
static PyObject *run_pyc_file Py_PROTO((FILE *fp, char *filename,
PyObject *globals, PyObject *locals));
static void err_input Py_PROTO((perrdetail *));
static void initsigs Py_PROTO((void));
int debugging; /* Needed by parser.c */
int verbose; /* Needed by import.c */
int suppress_print; /* Needed by ceval.c */
int Py_DebugFlag; /* Needed by parser.c */
int Py_VerboseFlag; /* Needed by import.c */
int Py_SuppressPrintingFlag; /* Needed by ceval.c */
int Py_InteractiveFlag; /* Needed by Py_FdIsInteractive() below */
/* Initialize all */
void
initall()
Py_Initialize()
{
static int inited;
@ -92,17 +88,17 @@ initall()
return;
inited = 1;
initimport();
PyImport_Init();
/* Modules '__builtin__' and 'sys' are initialized here,
they are needed by random bits of the interpreter.
All other modules are optional and are initialized
when they are first imported. */
initbuiltin(); /* Also initializes builtin exceptions */
initsys();
PyBuiltin_Init(); /* Also initializes builtin exceptions */
PySys_Init();
setpythonpath(getpythonpath());
PySys_SetPath(Py_GetPath());
initsigs(); /* Signal handling stuff, including initintr() */
@ -114,51 +110,52 @@ initall()
static void
initmain()
{
object *m, *d;
m = add_module("__main__");
PyObject *m, *d;
m = PyImport_AddModule("__main__");
if (m == NULL)
fatal("can't create __main__ module");
d = getmoduledict(m);
if (dictlookup(d, "__builtins__") == NULL) {
if (dictinsert(d, "__builtins__", getbuiltins()))
fatal("can't add __builtins__ to __main__");
Py_FatalError("can't create __main__ module");
d = PyModule_GetDict(m);
if (PyDict_GetItemString(d, "__builtins__") == NULL) {
if (PyDict_SetItemString(d, "__builtins__",
PyEval_GetBuiltins()))
Py_FatalError("can't add __builtins__ to __main__");
}
}
/* Parse input from a file and execute it */
int
run(fp, filename)
PyRun_AnyFile(fp, filename)
FILE *fp;
char *filename;
{
if (filename == NULL)
filename = "???";
if (Py_FdIsInteractive(fp, filename))
return run_tty_loop(fp, filename);
return PyRun_InteractiveLoop(fp, filename);
else
return run_script(fp, filename);
return PyRun_SimpleFile(fp, filename);
}
int
run_tty_loop(fp, filename)
PyRun_InteractiveLoop(fp, filename)
FILE *fp;
char *filename;
{
object *v;
PyObject *v;
int ret;
v = sysget("ps1");
v = PySys_GetObject("ps1");
if (v == NULL) {
sysset("ps1", v = newstringobject(">>> "));
XDECREF(v);
PySys_SetObject("ps1", v = PyString_FromString(">>> "));
Py_XDECREF(v);
}
v = sysget("ps2");
v = PySys_GetObject("ps2");
if (v == NULL) {
sysset("ps2", v = newstringobject("... "));
XDECREF(v);
PySys_SetObject("ps2", v = PyString_FromString("... "));
Py_XDECREF(v);
}
for (;;) {
ret = run_tty_1(fp, filename);
ret = PyRun_InteractiveOne(fp, filename);
#ifdef Py_REF_DEBUG
fprintf(stderr, "[%ld refs]\n", _Py_RefTotal);
#endif
@ -172,37 +169,38 @@ run_tty_loop(fp, filename)
}
int
run_tty_1(fp, filename)
PyRun_InteractiveOne(fp, filename)
FILE *fp;
char *filename;
{
object *m, *d, *v, *w;
PyObject *m, *d, *v, *w;
node *n;
perrdetail err;
char *ps1, *ps2;
v = sysget("ps1");
w = sysget("ps2");
if (v != NULL && is_stringobject(v)) {
INCREF(v);
ps1 = getstringvalue(v);
v = PySys_GetObject("ps1");
w = PySys_GetObject("ps2");
if (v != NULL && PyString_Check(v)) {
Py_INCREF(v);
ps1 = PyString_AsString(v);
}
else {
v = NULL;
ps1 = "";
}
if (w != NULL && is_stringobject(w)) {
INCREF(w);
ps2 = getstringvalue(w);
if (w != NULL && PyString_Check(w)) {
Py_INCREF(w);
ps2 = PyString_AsString(w);
}
else {
w = NULL;
ps2 = "";
}
BGN_SAVE
n = parsefile(fp, filename, &gram, single_input, ps1, ps2, &err);
END_SAVE
XDECREF(v);
XDECREF(w);
Py_BEGIN_ALLOW_THREADS
n = PyParser_ParseFile(fp, filename, &_PyParser_Grammar,
single_input, ps1, ps2, &err);
Py_END_ALLOW_THREADS
Py_XDECREF(v);
Py_XDECREF(w);
if (n == NULL) {
if (err.error == E_EOF) {
if (err.text)
@ -210,35 +208,35 @@ run_tty_1(fp, filename)
return E_EOF;
}
err_input(&err);
print_error();
PyErr_Print();
return err.error;
}
m = add_module("__main__");
m = PyImport_AddModule("__main__");
if (m == NULL)
return -1;
d = getmoduledict(m);
d = PyModule_GetDict(m);
v = run_node(n, filename, d, d);
if (v == NULL) {
print_error();
PyErr_Print();
return -1;
}
DECREF(v);
flushline();
Py_DECREF(v);
Py_FlushLine();
return 0;
}
int
run_script(fp, filename)
PyRun_SimpleFile(fp, filename)
FILE *fp;
char *filename;
{
object *m, *d, *v;
PyObject *m, *d, *v;
char *ext;
m = add_module("__main__");
m = PyImport_AddModule("__main__");
if (m == NULL)
return -1;
d = getmoduledict(m);
d = PyModule_GetDict(m);
ext = filename + strlen(filename) - 4;
#ifdef macintosh
/* On a mac, we also assume a pyc file for types 'PYC ' and 'APPL' */
@ -255,83 +253,83 @@ run_script(fp, filename)
}
v = run_pyc_file(fp, filename, d, d);
} else {
v = run_file(fp, filename, file_input, d, d);
v = PyRun_File(fp, filename, file_input, d, d);
}
if (v == NULL) {
print_error();
PyErr_Print();
return -1;
}
DECREF(v);
flushline();
Py_DECREF(v);
Py_FlushLine();
return 0;
}
int
run_command(command)
PyRun_SimpleString(command)
char *command;
{
object *m, *d, *v;
m = add_module("__main__");
PyObject *m, *d, *v;
m = PyImport_AddModule("__main__");
if (m == NULL)
return -1;
d = getmoduledict(m);
v = run_string(command, file_input, d, d);
d = PyModule_GetDict(m);
v = PyRun_String(command, file_input, d, d);
if (v == NULL) {
print_error();
PyErr_Print();
return -1;
}
DECREF(v);
flushline();
Py_DECREF(v);
Py_FlushLine();
return 0;
}
void
print_error()
PyErr_Print()
{
object *exception, *v, *tb, *f;
err_fetch(&exception, &v, &tb);
flushline();
PyObject *exception, *v, *tb, *f;
PyErr_Fetch(&exception, &v, &tb);
Py_FlushLine();
fflush(stdout);
if (exception == NULL)
fatal("print_error called but no exception");
if (exception == SystemExit) {
if (v == NULL || v == None)
goaway(0);
if (is_intobject(v))
goaway((int)getintvalue(v));
Py_FatalError("print_error called but no exception");
if (exception == PyExc_SystemExit) {
if (v == NULL || v == Py_None)
Py_Exit(0);
if (PyInt_Check(v))
Py_Exit((int)PyInt_AsLong(v));
else {
/* OK to use real stderr here */
printobject(v, stderr, PRINT_RAW);
PyObject_Print(v, stderr, Py_PRINT_RAW);
fprintf(stderr, "\n");
goaway(1);
Py_Exit(1);
}
}
sysset("last_type", exception);
sysset("last_value", v);
sysset("last_traceback", tb);
f = sysget("stderr");
PySys_SetObject("last_type", exception);
PySys_SetObject("last_value", v);
PySys_SetObject("last_traceback", tb);
f = PySys_GetObject("stderr");
if (f == NULL)
fprintf(stderr, "lost sys.stderr\n");
else {
tb_print(tb, f);
if (exception == SyntaxError) {
object *message;
PyTraceBack_Print(tb, f);
if (exception == PyExc_SyntaxError) {
PyObject *message;
char *filename, *text;
int lineno, offset;
if (!getargs(v, "(O(ziiz))", &message,
if (!PyArg_Parse(v, "(O(ziiz))", &message,
&filename, &lineno, &offset, &text))
err_clear();
PyErr_Clear();
else {
char buf[10];
writestring(" File \"", f);
PyFile_WriteString(" File \"", f);
if (filename == NULL)
writestring("<string>", f);
PyFile_WriteString("<string>", f);
else
writestring(filename, f);
writestring("\", line ", f);
PyFile_WriteString(filename, f);
PyFile_WriteString("\", line ", f);
sprintf(buf, "%d", lineno);
writestring(buf, f);
writestring("\n", f);
PyFile_WriteString(buf, f);
PyFile_WriteString("\n", f);
if (text != NULL) {
char *nl;
if (offset > 0 &&
@ -349,159 +347,162 @@ print_error()
text++;
offset--;
}
writestring(" ", f);
writestring(text, f);
PyFile_WriteString(" ", f);
PyFile_WriteString(text, f);
if (*text == '\0' ||
text[strlen(text)-1] != '\n')
writestring("\n", f);
writestring(" ", f);
PyFile_WriteString("\n", f);
PyFile_WriteString(" ", f);
offset--;
while (offset > 0) {
writestring(" ", f);
PyFile_WriteString(" ", f);
offset--;
}
writestring("^\n", f);
PyFile_WriteString("^\n", f);
}
INCREF(message);
DECREF(v);
Py_INCREF(message);
Py_DECREF(v);
v = message;
}
}
if (is_classobject(exception)) {
object* className = ((classobject*)exception)->cl_name;
if (PyClass_Check(exception)) {
PyObject* className =
((PyClassObject*)exception)->cl_name;
if (className == NULL)
writestring("<unknown>", f);
PyFile_WriteString("<unknown>", f);
else {
if (writeobject(className, f, PRINT_RAW) != 0)
err_clear();
if (PyFile_WriteObject(className, f,
Py_PRINT_RAW) != 0)
PyErr_Clear();
}
} else {
if (writeobject(exception, f, PRINT_RAW) != 0)
err_clear();
if (PyFile_WriteObject(exception, f,
Py_PRINT_RAW) != 0)
PyErr_Clear();
}
if (v != NULL && v != None) {
writestring(": ", f);
if (writeobject(v, f, PRINT_RAW) != 0)
err_clear();
if (v != NULL && v != Py_None) {
PyFile_WriteString(": ", f);
if (PyFile_WriteObject(v, f, Py_PRINT_RAW) != 0)
PyErr_Clear();
}
writestring("\n", f);
PyFile_WriteString("\n", f);
}
XDECREF(exception);
XDECREF(v);
XDECREF(tb);
Py_XDECREF(exception);
Py_XDECREF(v);
Py_XDECREF(tb);
}
object *
run_string(str, start, globals, locals)
PyObject *
PyRun_String(str, start, globals, locals)
char *str;
int start;
object *globals, *locals;
PyObject *globals, *locals;
{
return run_err_node(parse_string(str, start),
return run_err_node(PyParser_SimpleParseString(str, start),
"<string>", globals, locals);
}
object *
run_file(fp, filename, start, globals, locals)
PyObject *
PyRun_File(fp, filename, start, globals, locals)
FILE *fp;
char *filename;
int start;
object *globals, *locals;
PyObject *globals, *locals;
{
return run_err_node(parse_file(fp, filename, start),
return run_err_node(PyParser_SimpleParseFile(fp, filename, start),
filename, globals, locals);
}
static object *
static PyObject *
run_err_node(n, filename, globals, locals)
node *n;
char *filename;
object *globals, *locals;
PyObject *globals, *locals;
{
if (n == NULL)
return NULL;
return run_node(n, filename, globals, locals);
}
static object *
static PyObject *
run_node(n, filename, globals, locals)
node *n;
char *filename;
object *globals, *locals;
PyObject *globals, *locals;
{
codeobject *co;
object *v;
co = compile(n, filename);
freetree(n);
PyCodeObject *co;
PyObject *v;
co = PyNode_Compile(n, filename);
PyNode_Free(n);
if (co == NULL)
return NULL;
v = eval_code(co, globals, locals);
DECREF(co);
v = PyEval_EvalCode(co, globals, locals);
Py_DECREF(co);
return v;
}
static object *
static PyObject *
run_pyc_file(fp, filename, globals, locals)
FILE *fp;
char *filename;
object *globals, *locals;
PyObject *globals, *locals;
{
codeobject *co;
object *v;
PyCodeObject *co;
PyObject *v;
long magic;
long get_pyc_magic();
long PyImport_GetMagicNumber();
magic = rd_long(fp);
if (magic != get_pyc_magic()) {
err_setstr(RuntimeError,
magic = PyMarshal_ReadLongFromFile(fp);
if (magic != PyImport_GetMagicNumber()) {
PyErr_SetString(PyExc_RuntimeError,
"Bad magic number in .pyc file");
return NULL;
}
(void) rd_long(fp);
v = rd_object(fp);
(void) PyMarshal_ReadLongFromFile(fp);
v = PyMarshal_ReadObjectFromFile(fp);
fclose(fp);
if (v == NULL || !is_codeobject(v)) {
XDECREF(v);
err_setstr(RuntimeError,
if (v == NULL || !PyCode_Check(v)) {
Py_XDECREF(v);
PyErr_SetString(PyExc_RuntimeError,
"Bad code object in .pyc file");
return NULL;
}
co = (codeobject *)v;
v = eval_code(co, globals, locals);
DECREF(co);
co = (PyCodeObject *)v;
v = PyEval_EvalCode(co, globals, locals);
Py_DECREF(co);
return v;
}
object *
compile_string(str, filename, start)
PyObject *
Py_CompileString(str, filename, start)
char *str;
char *filename;
int start;
{
node *n;
codeobject *co;
n = parse_string(str, start);
PyCodeObject *co;
n = PyParser_SimpleParseString(str, start);
if (n == NULL)
return NULL;
co = compile(n, filename);
freetree(n);
return (object *)co;
co = PyNode_Compile(n, filename);
PyNode_Free(n);
return (PyObject *)co;
}
/* Simplified interface to parsefile -- return node or set exception */
node *
parse_file(fp, filename, start)
PyParser_SimpleParseFile(fp, filename, start)
FILE *fp;
char *filename;
int start;
{
node *n;
perrdetail err;
BGN_SAVE
n = parsefile(fp, filename, &gram, start,
Py_BEGIN_ALLOW_THREADS
n = PyParser_ParseFile(fp, filename, &_PyParser_Grammar, start,
(char *)0, (char *)0, &err);
END_SAVE
Py_END_ALLOW_THREADS
if (n == NULL)
err_input(&err);
return n;
@ -510,13 +511,13 @@ parse_file(fp, filename, start)
/* Simplified interface to parsestring -- return node or set exception */
node *
parse_string(str, start)
PyParser_SimpleParseString(str, start)
char *str;
int start;
{
node *n;
perrdetail err;
n = parsestring(str, &gram, start, &err);
n = PyParser_ParseString(str, &_PyParser_Grammar, start, &err);
if (n == NULL)
err_input(&err);
return n;
@ -528,9 +529,9 @@ static void
err_input(err)
perrdetail *err;
{
object *v, *w;
PyObject *v, *w;
char *msg = NULL;
v = mkvalue("(ziiz)", err->filename,
v = Py_BuildValue("(ziiz)", err->filename,
err->lineno, err->offset, err->text);
if (err->text != NULL) {
free(err->text);
@ -545,10 +546,10 @@ err_input(err)
break;
case E_INTR:
err_set(KeyboardInterrupt);
PyErr_SetNone(PyExc_KeyboardInterrupt);
return;
case E_NOMEM:
err_nomem();
PyErr_NoMemory();
return;
case E_EOF:
msg = "unexpected EOF while parsing";
@ -558,16 +559,16 @@ err_input(err)
msg = "unknown parsing error";
break;
}
w = mkvalue("(sO)", msg, v);
XDECREF(v);
err_setval(SyntaxError, w);
XDECREF(w);
w = Py_BuildValue("(sO)", msg, v);
Py_XDECREF(v);
PyErr_SetObject(PyExc_SyntaxError, w);
Py_XDECREF(w);
}
/* Print fatal error message and abort */
void
fatal(msg)
Py_FatalError(msg)
char *msg;
{
fprintf(stderr, "Fatal Python error: %s\n", msg);
@ -586,7 +587,7 @@ fatal(msg)
#ifdef WITH_THREAD
#include "thread.h"
int threads_started = 0; /* Set by threadmodule.c and maybe others */
int _PyThread_Started = 0; /* Set by threadmodule.c and maybe others */
#endif
#define NEXITFUNCS 32
@ -594,7 +595,7 @@ static void (*exitfuncs[NEXITFUNCS])();
static int nexitfuncs = 0;
int Py_AtExit(func)
void (*func) PROTO((void));
void (*func) Py_PROTO((void));
{
if (nexitfuncs >= NEXITFUNCS)
return -1;
@ -603,37 +604,37 @@ int Py_AtExit(func)
}
void
cleanup()
Py_Cleanup()
{
object *exitfunc = sysget("exitfunc");
PyObject *exitfunc = PySys_GetObject("exitfunc");
if (exitfunc) {
object *res;
INCREF(exitfunc);
sysset("exitfunc", (object *)NULL);
res = call_object(exitfunc, (object *)NULL);
PyObject *res;
Py_INCREF(exitfunc);
PySys_SetObject("exitfunc", (PyObject *)NULL);
res = PyEval_CallObject(exitfunc, (PyObject *)NULL);
if (res == NULL) {
fprintf(stderr, "Error in sys.exitfunc:\n");
print_error();
PyErr_Print();
}
DECREF(exitfunc);
Py_DECREF(exitfunc);
}
flushline();
Py_FlushLine();
while (nexitfuncs > 0)
(*exitfuncs[--nexitfuncs])();
}
#ifdef COUNT_ALLOCS
extern void dump_counts PROTO((void));
extern void dump_counts Py_PROTO((void));
#endif
void
goaway(sts)
Py_Exit(sts)
int sts;
{
cleanup();
Py_Cleanup();
#ifdef COUNT_ALLOCS
dump_counts();
@ -645,14 +646,14 @@ goaway(sts)
cleanup actions usually done (these are mostly for
debugging anyway). */
(void) save_thread();
(void) PyEval_SaveThread();
#ifndef NO_EXIT_PROG
if (threads_started)
if (_PyThread_Started)
_exit_prog(sts);
else
exit_prog(sts);
#else /* !NO_EXIT_PROG */
if (threads_started)
if (_PyThread_Started)
_exit(sts);
else
exit(sts);
@ -660,16 +661,16 @@ goaway(sts)
#else /* WITH_THREAD */
doneimport();
PyImport_Cleanup();
err_clear();
PyErr_Clear();
#ifdef Py_REF_DEBUG
fprintf(stderr, "[%ld refs]\n", _Py_RefTotal);
#endif
#ifdef Py_TRACE_REFS
if (askyesno("Print left references?")) {
if (_Py_AskYesNo("Print left references?")) {
_Py_PrintReferences(stderr);
}
#endif /* Py_TRACE_REFS */
@ -689,7 +690,7 @@ sighandler(sig)
int sig;
{
signal(sig, SIG_DFL); /* Don't catch recursive signals */
cleanup(); /* Do essential clean-up */
Py_Cleanup(); /* Do essential clean-up */
#ifdef HAVE_GETPID
kill(getpid(), sig); /* Pretend the signal killed us */
#else
@ -722,14 +723,14 @@ initsigs()
signal(SIGTERM, t);
#endif
#endif /* HAVE_SIGNAL_H */
initintr(); /* May imply initsignal() */
PyOS_InitInterrupts(); /* May imply initsignal() */
}
#ifdef Py_TRACE_REFS
/* Ask a yes/no question */
int
askyesno(prompt)
_Py_AskYesNo(prompt)
char *prompt;
{
char buf[256];