mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 00:48:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

Remove the simple slicing API. All slicing is now done with slice objects.

Browse source
This commit is contained in:
Thomas Wouters 2007-08-30 22:57:53 +00:00
parent 582b586617
commit d2cf20eea2
32 changed files with 78 additions and 810 deletions
Download patch file Download diff file Expand all files Collapse all files

80
Python/compile.c
View file

@ -707,33 +707,6 @@ opcode_stack_effect(int opcode, int oparg)
case INPLACE_TRUE_DIVIDE:
return -1;
case SLICE+0:
return 1;
case SLICE+1:
return 0;
case SLICE+2:
return 0;
case SLICE+3:
return -1;
case STORE_SLICE+0:
return -2;
case STORE_SLICE+1:
return -3;
case STORE_SLICE+2:
return -3;
case STORE_SLICE+3:
return -4;
case DELETE_SLICE+0:
return -1;
case DELETE_SLICE+1:
return -2;
case DELETE_SLICE+2:
return -2;
case DELETE_SLICE+3:
return -3;
case INPLACE_ADD:
case INPLACE_SUBTRACT:
case INPLACE_MULTIPLY:
@ -3507,57 +3480,6 @@ compiler_slice(struct compiler *c, slice_ty s, expr_context_ty ctx)
return 1;
}
static int
compiler_simple_slice(struct compiler *c, slice_ty s, expr_context_ty ctx)
{
int op = 0, slice_offset = 0, stack_count = 0;
assert(s->v.Slice.step == NULL);
if (s->v.Slice.lower) {
slice_offset++;
stack_count++;
if (ctx != AugStore)
VISIT(c, expr, s->v.Slice.lower);
}
if (s->v.Slice.upper) {
slice_offset += 2;
stack_count++;
if (ctx != AugStore)
VISIT(c, expr, s->v.Slice.upper);
}
if (ctx == AugLoad) {
switch (stack_count) {
case 0: ADDOP(c, DUP_TOP); break;
case 1: ADDOP_I(c, DUP_TOPX, 2); break;
case 2: ADDOP_I(c, DUP_TOPX, 3); break;
}
}
else if (ctx == AugStore) {
switch (stack_count) {
case 0: ADDOP(c, ROT_TWO); break;
case 1: ADDOP(c, ROT_THREE); break;
case 2: ADDOP(c, ROT_FOUR); break;
}
}
switch (ctx) {
case AugLoad: /* fall through to Load */
case Load: op = SLICE; break;
case AugStore:/* fall through to Store */
case Store: op = STORE_SLICE; break;
case Del: op = DELETE_SLICE; break;
case Param:
default:
PyErr_SetString(PyExc_SystemError,
"param invalid in simple slice");
return 0;
}
ADDOP(c, op + slice_offset);
return 1;
}
static int
compiler_visit_nested_slice(struct compiler *c, slice_ty s,
expr_context_ty ctx)
@ -3590,8 +3512,6 @@ compiler_visit_slice(struct compiler *c, slice_ty s, expr_context_ty ctx)
break;
case Slice_kind:
kindname = "slice";
if (!s->v.Slice.step)
return compiler_simple_slice(c, s, ctx);
if (ctx != AugStore) {
if (!compiler_slice(c, s, ctx))
return 0;