1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
/* This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "ansidecl.h"
#include "coretypes.h"
#include "tm.h"
#include "opts.h"
#include "tree.h"
#include "tree-iterator.h"
#include "tree-pass.h"
#include "gimple.h"
#include "toplev.h"
#include "debug.h"
#include "options.h"
#include "flags.h"
#include "convert.h"
#include "diagnostic-core.h"
#include "langhooks.h"
#include "langhooks-def.h"
#include "target.h"
#include "cgraph.h"
#include <gmp.h>
#include <mpfr.h>
#include "vec.h"
#include "hashtab.h"
#include "gpython.h"
#include "py-dot.h"
#include "py-vec.h"
#include "py-tree.h"
static tree gpy_stmt_pass_process_toplevel_decls (VEC(gpydot,gc) *);
/*
Takes the toplevel decls and generates the type example:
x = 1
y = 2
class foobar:
def __init__ (self):
self.attrib = x
we dont need to generate types for normal things like local blocks
as these will go out of scope anyways because of the python standard
so we can leave these address's on the stack, this also goes for functions
for functions it will just be a case of knowing which objects it has
access to and passing the correct instances so proper scoping is preserved
or we can pass them all as a naive way as normal static analysis should
preserve the scoping standard.
Will only care about the x and y expressions on the toplevel,
leaving the class
*/
static
tree gpy_stmt_pass_process_toplevel_decls (VEC(gpydot,gc) * decls)
{
tree retval = make_node (RECORD_TYPE);
int idx = 0;
gpy_dot_tree_t * itx = NULL_DOT;
gpy_hash_tab_t context;
gpy_dd_hash_init_table (&context);
debug ("SIT SON!\n");
for (; VEC_iterate (gpydot, decls, idx, itx); ++idx)
{
/*
Lets not worry about un-defined objects within expressions
example:
x = 1
y = x + z # where z is un-defined
We will let that be handled by the 2nd pass.
*/
if (DOT_T_FIELD (itx) == D_D_EXPR)
{
debug ("expr expr!!\n");
itx = gpy_stmt_process_AST_Align (&itx);
if (DOT_TYPE(itx) == D_MODIFY_EXPR)
{
gcc_assert ((DOT_lhs_T(itx) == D_TD_DOT)
&& (DOT_rhs_T(itx) == D_TD_DOT)
);
debug ("modify expr!!!!!!!!!!!\n");
gpy_dot_tree_t * target = DOT_lhs_TT (itx);
// remember to handle target lists here with DOT_CHAIN
do {
gpy_hashval_t h = gpy_dd_hash_string (DOT_IDENTIFIER_POINTER (target));
gpy_dd_hash_insert (h, target, &context);
} while ((target = DOT_CHAIN (target)));
}
}
}
debug ("context length = <%i>!\n", context.length);
if (context.length > 0)
{
const char * ident = "main.main";
tree field = NULL_TREE, last_field = NULL_TREE;
int idy = 0;
gpy_hash_entry_t *array = context.array;
for (idx = 0; idx<context.size; ++idx)
{
gpy_dot_tree_t * d = (gpy_dot_tree_t *) array[idx].data;
if (d)
{
field = build_decl (BUILTINS_LOCATION, FIELD_DECL,
get_identifier (DOT_IDENTIFIER_POINTER (d)),
gpy_object_type_ptr);
DECL_CONTEXT(field) = retval;
if (idy>0)
DECL_CHAIN (last_field) = field;
else
TYPE_FIELDS (retval) = field;
last_field = field;
idy++;
}
}
// free (context.array);
finish_builtin_struct (retval, ident, field, NULL_TREE);
TYPE_NAME (retval) = get_identifier (ident);
/*
DECL_ARTIFICIAL (retval) = 1;
gpy_preserve_from_gc (retval);
rest_of_decl_compilation (retval, 1, 0);
*/
}
else
retval = error_mark_node;
return retval;
}
/*
The first initial pass over the IR to generate the types for each
declared object within this module:
example:
x = 1
y = 2
class foobar:
def __init__ (self):
self.attrib = x
This is all actually 2 different objects which need to be setup,
and we need to generate the types for GCC before as, in the class
you dont have to pre-declare these attributes to a class to have them
in that different scope of the entire class
struct main.main {
gpy_object_t * x, * y;
}
struct main.foobar {
gpy_object_t * attrib;
}
These structs for each class may eventaully be fleshed out with more
information like member functions and eventually the base attributes
like polymorphism stuff but we ignore this for now.
*/
VEC(tree,gc) * gpy_stmt_pass_generate_types (VEC(gpydot,gc) * decls)
{
VEC(tree,gc) * retval = VEC_alloc (tree,gc,0);
VEC_safe_push (tree, gc, retval,
gpy_stmt_pass_process_toplevel_decls (decls));
/*
now to iterate over the class declarations and generate their types...
*/
return retval;
}
|
