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
|
#include <Python.h>
#include "pgf.h"
#define NEWOBJECT(OBJ, GFTYPE) typedef struct {\
PyObject_HEAD \
GFTYPE obj; \
} OBJ;
#define NEWTYPE(TYPE,NAME,OBJECT,DOC) static PyTypeObject TYPE = {\
PyObject_HEAD_INIT(NULL)\
0, /*ob_size*/\
NAME, /*tp_name*/\
sizeof(OBJECT), /*tp_basicsize*/\
0, /*tp_itemsize*/\
0, /*tp_dealloc*/\
0, /*tp_print*/\
0, /*tp_getattr*/\
0, /*tp_setattr*/\
0, /*tp_compare*/\
0, /*tp_repr*/\
0, /*tp_as_number*/\
0, /*tp_as_sequence*/\
0, /*tp_as_mapping*/\
0, /*tp_hash */\
0, /*tp_call*/\
0, /*tp_str*/\
0, /*tp_getattro*/\
0, /*tp_setattro*/\
0, /*tp_as_buffer*/\
Py_TPFLAGS_DEFAULT, /*tp_flags*/\
DOC, /* tp_doc */\
};
#define NEWGF(OBJ,GFTYPE,TYPE,NAME,DOC) NEWOBJECT(OBJ,GFTYPE) \
NEWTYPE(TYPE,NAME,OBJ,DOC)
NEWGF(PGFModule,GF_PGF,PGFType,"gf.pgf","PGF module")
NEWGF(Lang,GF_Language,LangType,"gf.lang","language")
NEWGF(gfType,GF_Type,gfTypeType,"gf.type","gf type")
NEWGF(Expr,GF_Expr,ExprType,"gf.expr","gf expression")
static PyObject*
PGF_repr(PGFModule* obj)
{
return PyString_FromFormat("this is a PGF module");
}
static PGFModule*
readPGF(PyObject *self, PyObject *args)
{
char *path;
PGFModule *pgf;
if (!PyArg_ParseTuple(args, "s", &path))
return NULL;
pgf = (PGFModule*)PGFType.tp_new(&PGFType,NULL,NULL);
if (!pgf) return NULL;
pgf->obj = gf_readPGF(path);
return pgf;
}
static Lang*
readLang(PyObject *self, PyObject *args)
{
char *langName;
Lang *l;
if (!PyArg_ParseTuple(args,"s",&langName))
return NULL;
l = (Lang*)LangType.tp_new(&LangType,NULL,NULL);
if(!l) return NULL;
l->obj = gf_readLanguage(langName);
return l;
}
int
checkType(PyObject* obj, PyTypeObject* tp)
{
int isRight = PyObject_TypeCheck(obj, tp);
if (!isRight)
PyErr_Format(PyExc_TypeError, "Expected a %s", tp->tp_doc);
return isRight;
}
static gfType*
startCategory(PyObject *self, PyObject *args)
{
gfType *cat;
PyObject *pgf_obj;
if (!PyArg_ParseTuple(args,"O",&pgf_obj))
return NULL;
if (!checkType(pgf_obj, &PGFType)) return NULL;
cat = (gfType*)gfTypeType.tp_new(&gfTypeType,NULL,NULL);
GF_PGF pgf = ((PGFModule*)pgf_obj)->obj;
cat->obj = gf_startCat(pgf);
return cat;
}
static PyObject*
parse(PyObject *self, PyObject *args)
{
PyObject *pgf_pyob, *lang_pyob, *cat_pyob;
GF_PGF pgf;
GF_Language lang;
GF_Type cat;
char *lexed;
if (!PyArg_ParseTuple(args, "OOOs", &pgf_pyob, &lang_pyob, &cat_pyob, &lexed))
return NULL;
if (!checkType(pgf_pyob, &PGFType)) return NULL;
if (!checkType(lang_pyob, &LangType)) return NULL;
if (!checkType(cat_pyob, &gfTypeType)) return NULL;
pgf = ((PGFModule*)pgf_pyob)->obj;
lang = ((Lang*)lang_pyob)->obj;
cat = ((gfType*)cat_pyob)->obj;
GF_Tree *result = gf_parse(pgf, lang, cat, lexed);
GF_Tree *p = result;
PyObject *parsed = PyList_New(0);
if (*p) {
do {
Expr* expr;
expr = (Expr*)ExprType.tp_new(&ExprType,NULL,NULL);
expr->obj = *(p++);
PyList_Append(parsed, (PyObject*)expr);
/* char *str = gf_showExpr(exp);
puts(str);
free(str); */
} while (*p);
}
return parsed;
}
static PyObject*
expr_repr(Expr *self)
{
const char *str = gf_showExpr(self->obj);
return PyString_FromString(str);
}
static PyMethodDef gf_methods[] = {
{"read_pgf", (PyCFunction)readPGF, METH_VARARGS,"Read pgf file."},
{"read_language", (PyCFunction)readLang, METH_VARARGS,"Get the language."},
{"startcat", (PyCFunction)startCategory, METH_VARARGS,"Get the start category of a pgf module."},
{"parse", (PyCFunction)parse, METH_VARARGS,"parse a string."},
{NULL, NULL, 0, NULL} /* Sentinel */
};
#ifndef PyMODINIT_FUNC/* declarations for DLL import/export */
#define PyMODINIT_FUNC void
#endif
PyMODINIT_FUNC
initgf(void)
{
PyObject* m;
#define READYTYPE(t) t.tp_new = PyType_GenericNew;\
if (PyType_Ready(&t) < 0) return;
PGFType.tp_repr = (reprfunc)PGF_repr;
READYTYPE(PGFType)
READYTYPE(LangType)
READYTYPE(gfTypeType)
ExprType.tp_repr = (reprfunc)expr_repr;
READYTYPE(ExprType)
m = Py_InitModule3("gf", gf_methods,
"Grammatical Framework.");
static char *argv[] = {"gf.so", 0}, **argv_ = argv;
static int argc = 1;
gf_init (&argc, &argv_);
hs_add_root (__stginit_PGFFFI);
#define ADDTYPE(t) Py_INCREF(&t);\
PyModule_AddObject(m, "gf", (PyObject *)&t);
ADDTYPE(PGFType)
ADDTYPE(LangType)
ADDTYPE(gfTypeType)
ADDTYPE(ExprType)
}
|
