This file is indexed.

/usr/include/swiginac/ex.i is in python-swiginac 1.5.1.1-1+b2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
/*
 (c) Copyright 2003, 2004, 2005
     Author: Ola Skavhaug and Ondrej Certik
     
     This file is part of swiginac.

     swiginac 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 2 of the License, or
     (at your option) any later version.

     swiginac 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 swiginac; if not, write to the Free Software
     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

%{ 
lst* list2lst(PyObject *input);
PyObject* lst2list(const lst *input); 

//GETDESC1 and GETDESC2 are equivalent - GETDESC1 is the official way how to do
//it, but it is slower than the undocumented way GETDESC2.

#define GETDESC1(NAME) \
static swig_type_info *NAME##descr=0;\
if (!NAME##descr){\
    NAME##descr=SWIG_TypeQuery("GiNaC::"#NAME" *");\
    if (!NAME##descr) {\
        PyErr_SetString(PyExc_ValueError,"Cannot get a "#NAME" descriptor. Fix in ex.i");\
        return NULL;\
    }\
}

#define GETDESC2(NAME) \
static swig_type_info *NAME##descr=SWIGTYPE_p_GiNaC__##NAME

#define GETDESC(NAME) GETDESC2(NAME)

//converts any type from python to ex
ex * type2ex(PyObject * input) {
    basic *btmp;
    GETDESC(basic);
    if (not((SWIG_ConvertPtr(input, (void **) &btmp, basicdescr,0)) == -1))
        return new ex((*btmp));
    if (PyInt_Check(input)) 
        return new ex(numeric(PyInt_AsLong(input)));
    if (PyFloat_Check(input)) 
        return new ex(numeric(PyFloat_AsDouble(input)));
    if (PyList_Check(input)) {
        lst *l=list2lst(input);
        if (l==NULL) return NULL;
        return new ex(l->eval());
    }
    return NULL;
} 

numeric * type2numeric(PyObject * input) {
    numeric *btmp;
    GETDESC(numeric);
    if (not((SWIG_ConvertPtr(input, (void **) &btmp, numericdescr,0)) == -1))
        return new numeric((*btmp));
    if (PyInt_Check(input)) 
        return new numeric(PyInt_AsLong(input));
    if (PyFloat_Check(input)) 
        return new numeric(PyFloat_AsDouble(input));
    return NULL;
} 


bool checktype2ex(PyObject * input) {
    //we assume, that everything can be converted to ex. 
    //if you find some counterexample, write test for it first (which fail)
    //and then implement it here.
    return true;
}

#define EX2(NAME) \
if (is_a<NAME>(*convert)) {\
    NAME *p = new NAME(ex_to<NAME>(*convert));\
    GETDESC(NAME);\
    return SWIG_NewPointerObj((void *)p, NAME##descr, 1);\
}

//unwraps ex and return python object
PyObject * ex2type(const ex* input) {

    ex tmp;
    try {
        tmp = input->evalm();
    } catch(std::exception & e)
    {
        tmp = *input;
    }

    const ex* convert = &tmp;


    EX2(symbol)
    EX2(constant)
    EX2(numeric)

    if (is_a<lst>(*convert)) {
        const lst *l = &ex_to<lst>(*convert);
        return lst2list(l);
    }

    EX2(pseries)
    EX2(su3one)
    EX2(su3t)
    EX2(su3f)
    EX2(su3d)
    EX2(diracone)
    EX2(diracgamma)
    EX2(diracgamma5)
    EX2(diracgammaL)
    EX2(diracgammaR)
    EX2(cliffordunit)
    EX2(tensor)
    EX2(tensdelta)
    EX2(tensmetric)
    EX2(minkmetric)
    EX2(spinmetric)
    EX2(tensepsilon)
    EX2(wildcard)
    EX2(color)
    EX2(clifford)
    EX2(indexed)
    EX2(varidx)
    EX2(spinidx)
    EX2(idx)
    EX2(symmetry)
    EX2(integral)
    EX2(relational)
    EX2(function)
    EX2(add)
    EX2(mul)
    EX2(ncmul)
    EX2(matrix)
    EX2(power)
    // Nothing converted, throw exception
    throw (std::logic_error("Cannot unwrap ex. Fix in ex.i"));
}

//converts ginac lst to python list (unwrapping all exs)
PyObject *lst2list(const lst *input) {
    lst::const_iterator i = input->begin();
    lst::const_iterator i_end = input->end();
    PyObject *pylist = PyList_New(0);
    while (i!=i_end) {
        PyObject *item = ex2type(&(*i));
        PyList_Append(pylist, item);
        //is this necessary?
        Py_INCREF(item);
        i++;
    }
    return (pylist);
}

/*
PyObject *lst2list(lst *input) {
    lst *l = input;
    int n = l->nops(); 
    PyObject *pylist = PyList_New(n);
    PyObject *item;
    for (int i=0;i<n;i++) {
        item = ex2type(&(l->let_op(i)));
        PyList_SetItem(pylist, i, item);
        Py_INCREF(item);
    }
    return (pylist);
}*/

//convert any python list to ginac lst
lst* list2lst(PyObject * input)
{
    lst *out=new lst();
    if PyList_Check(input) {
        int n = PyList_Size(input);
        PyObject *item;
        ex *tmp;
        for (int i = 0; i<n;i++) {
            item = PyList_GetItem(input, i);
            tmp = type2ex(item);
            if (tmp) {
                out->append(*tmp);
            } else {
                PyErr_SetString(PyExc_ValueError,"Cannot convert type to ex.");
                return NULL;
            }
        }
        return out;
    }
    else {
        PyErr_SetString(PyExc_ValueError,"List expected.");
        delete out;
        return NULL;
    }
}

//converts ginac exvector to python list (unwrapping all exs)
PyObject *exvector2list(exvector *input) {
    exvector::const_iterator i = input->begin();
    exvector::const_iterator i_end = input->end();
    PyObject *pylist = PyList_New(0);
    while (i!=i_end) {
        PyObject *item = ex2type(&(*i));
        PyList_Append(pylist, item);
        //is this necessary?
        Py_INCREF(item);
        i++;
    }
    return (pylist);
}

%}

// vim:ft=cpp: