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This change implements a new bytecode compiler, based on a
transformation of the parse tree to an abstract syntax defined in
Parser/Python.asdl.

The compiler implementation is not complete, but it is in stable
enough shape to run the entire test suite excepting two disabled
tests.
This commit is contained in:
Jeremy Hylton 2005-10-20 19:59:25 +00:00
parent 2cb94aba12
commit 3e0055f8c6
54 changed files with 13675 additions and 6810 deletions
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45
Python/ceval.c
View file

@ -8,7 +8,7 @@
#include "Python.h"
#include "compile.h"
#include "code.h"
#include "frameobject.h"
#include "eval.h"
#include "opcode.h"
@ -543,7 +543,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throw)
#ifdef LLTRACE
int lltrace;
#endif
#if defined(Py_DEBUG) || defined(LLTRACE)
#if defined(Py_DEBUG)
/* Make it easier to find out where we are with a debugger */
char *filename;
#endif
@ -743,9 +743,9 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throw)
f->f_stacktop = NULL; /* remains NULL unless yield suspends frame */
#ifdef LLTRACE
lltrace = PyDict_GetItemString(f->f_globals,"__lltrace__") != NULL;
lltrace = PyDict_GetItemString(f->f_globals, "__lltrace__") != NULL;
#endif
#if defined(Py_DEBUG) || defined(LLTRACE)
#if defined(Py_DEBUG)
filename = PyString_AsString(co->co_filename);
#endif
@ -2257,23 +2257,11 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throw)
case MAKE_CLOSURE:
{
int nfree;
v = POP(); /* code object */
x = PyFunction_New(v, f->f_globals);
nfree = PyCode_GetNumFree((PyCodeObject *)v);
Py_DECREF(v);
/* XXX Maybe this should be a separate opcode? */
if (x != NULL && nfree > 0) {
v = PyTuple_New(nfree);
if (v == NULL) {
Py_DECREF(x);
x = NULL;
break;
}
while (--nfree >= 0) {
w = POP();
PyTuple_SET_ITEM(v, nfree, w);
}
if (x != NULL) {
v = POP();
err = PyFunction_SetClosure(x, v);
Py_DECREF(v);
}
@ -2695,12 +2683,18 @@ PyEval_EvalCodeEx(PyCodeObject *co, PyObject *globals, PyObject *locals,
if (co->co_flags & CO_VARKEYWORDS)
nargs++;
/* Check for cells that shadow args */
for (i = 0; i < f->f_ncells && j < nargs; ++i) {
/* Initialize each cell var, taking into account
cell vars that are initialized from arguments.
Should arrange for the compiler to put cellvars
that are arguments at the beginning of the cellvars
list so that we can march over it more efficiently?
*/
for (i = 0; i < f->f_ncells; ++i) {
cellname = PyString_AS_STRING(
PyTuple_GET_ITEM(co->co_cellvars, i));
found = 0;
while (j < nargs) {
for (j = 0; j < nargs; j++) {
argname = PyString_AS_STRING(
PyTuple_GET_ITEM(co->co_varnames, j));
if (strcmp(cellname, argname) == 0) {
@ -2711,7 +2705,6 @@ PyEval_EvalCodeEx(PyCodeObject *co, PyObject *globals, PyObject *locals,
found = 1;
break;
}
j++;
}
if (found == 0) {
c = PyCell_New(NULL);
@ -2720,14 +2713,6 @@ PyEval_EvalCodeEx(PyCodeObject *co, PyObject *globals, PyObject *locals,
SETLOCAL(f->f_nlocals + i, c);
}
}
/* Initialize any that are left */
while (i < f->f_ncells) {
c = PyCell_New(NULL);
if (c == NULL)
goto fail;
SETLOCAL(f->f_nlocals + i, c);
i++;
}
}
if (f->f_nfreevars) {
int i;